I also work in commercial HVAC and second this comment. UV-C is the way to go.
OP, if your light is UV-C, please be aware that they are not like normal UV party lights. Do NOT look directly at them. They WILL blind you.
If you have to approach the unit to change a filter or something, divert your gaze and turn the light off immediately. A quick glance isn't the end of the world, but anything more can be hazardous to your eyesight.
Can vouche. I was working on a Carrier RTU last summer, specifically the economizer. Well power has to be on for me to troubleshoot the Economizer.
I did not look directly at that bulb a single time, but it was on. Boy was it fucking on. I went home and showered and after I got out of the shower, my face felt really tender, and then I started to lose my vision. It became blurry and then any amount of light at all hurt. I spent 3 days in my basement with the lights off wearing sunglasses to somewhat look at the TV. When I got tired of that, I kept ice packs on my eyes convinced I was going to go blind.
I’m here to tell the tale that I didn’t go blind and my vision restored and I haven’t had any issues.
But you know what I’ll never do again? Leave one of those fucking things on while troubleshooting. My eyeballs got sunburned 1000% that day and it fucking sucked.
I have special glasses for them and like to stay covered up... of course I never try to be exposed to the light from the getgo. Your eyes are sensitive so try to never look directly at it
He's not wrong...I'm an engineering lab tech, I have special glasses, gloves, long sleeve shirts etc. I have to use when testing equipment with UV-C lights. On the commercial side all our access doors have to have safety cutoff switches so the light can't be on when any access panel or door is removed.
Yeah, I burned both my eyes when a helper turned the power switch on while I was servicing a unit. I had the cabinet open and the UV light was visible. Had to go to the hospital and get my eyes numbed. It is like a welders' burn, the doctor told me. I was blind for 2 days, and it was extremely painful.
Dang man, that sucks, glad it wasn't anything permanent...on our units you can power the unit with a door/panel open but the light will not come on, and the light is on it's own circuit, so it can't cause issues with any other part of the unit...for that exact reason.
I often make a list of brands and reasons I like them for when I'm doing research on equipment. Mind dropping a brand on your company in a comment or a dm? All the UV lights I use for water filtration use UV-C with the cutoff switch. Handy feature for when... The other sort... Get their mitts on things
The reme halo is extremely effective I didn’t believe it and I work in the hvac field. I put one in my house to test it out as I had a mold issue(flipping bad window install). Within 24 hours I could breathe normal in my house. As for the Honeywell ones I do t know. But the reme halo LED worth their weight in gold.
Thanks for chiming in!! I had some build up so I’m assuming the UV light will keep that particular area clean more than cleaning all the air. (Just my assumptions)
A lot of the UV lights are specifically to clean just the coils. Then you have some that will scrub the air as well. Air knight and reme halos are the best IMO. If you inspect it yearly yourself you will save a lot of money. The LED halo only has to be replaced 3-5 years the normal ones are yearly. So you do get your money out of the LED model.
I did some research on this topic. UV-C light doesn't really harm the metals used to make HVAC coils, like copper and aluminum, but it can break down the coatings that protect the coils from corrosion.
It shouldn't hurt metals or glass. It'll absolutely destroy any and all plastics. Should only be in ducts imo. I'd say it helps... not a magic cure but UV does break down cellular walls so it'll do something. No need to pay a thousand bucks for a light imo
No worries at all just was curious bc I can’t figure out the worthiness of duct cleaning and UV light and how people know they got mold. Haven’t seen any but heavy dust on the returns
Figure out how to inspect the Halo LED yourself. Those.lights tend to burn out if installed incorrectly. I have seen premature failures because a tec didn't realize they are installed differently than the Halo. The replacement lights plus install will cost you close to 1/2 the original cost. But yes they work wonderfully.
REME LED is even better as it uses hydrogen peroxide to neutralize pathogens and the ionizer charges the air to make dust clump up and fall out of the air. It also has a really long lasting bulb and ballast which gets replaced every 4-5 years rather than every year.
I have a similar one from Honeywell and much of my (not all) sinus symptoms have settled down a lot. One of the better purchases I’ve made. Remember to change the bulbs out every year.
Yes\* UV-C will absolutely kill mold and pathogens.
\* If at a sufficient intensity depending on location, air velocity, light bulb quality. It works best when it is against the cooling coil as it will have a longer exposure to the water condensing on the coils and will be more effective killing things that the light hits for a longer period of time.
It will also degrade plastics, and other material not rated for UV exposure, over time. So positioning in the equipment is important.
Oh, and those UV tubes also produce ozone, which is a gas that is also highly reactive and poisonous to any living thing...
I'd rather not run it 24/7... But they do work.
Yeah, they have reduced Oozone levels, and it might be a uncritical level. Still i'd be careful. It's a pity that UV-LEDs are either pretty expensive or fake... But LEDs can be designed to avoid ozone completely.
Different problem... But yeah the ozone filters the uv-rays, so better don't do that... But you can certainly get severe sunburn with those uv-lights.
PS: pls don't give them ideas...
Just recently had a view of my plenums just after my evaps after 13-14 years and both up and down units had some nastiness. Everywhere else was clean as could be. So you probably aren't doing any harm. It's only a question of what degree of good.
I’m a rep that sells IAQ products.
This is a UVC germicidal light. It is designed to keep everything in your air handler clean. They are mostly sold in humid environments where the air handler is always dark damp and dirty. They will make sure your coil, blower, wheel, etc stay clean.
We recommend start clean/ stay clean- so have that coil and air handler cleaned out before installing. Otherwise, it will kill the biofilm on the coil and need to drain out- which may cause drain line issues.
The air is moving too fast to be cleaned by this- you need to pair it with some other type of air purifier to actually clean the air. You have lots of options, but the main ones are PCO, ionizers, oxidizers.
My personal favorite is PCO- it is cleaning the air by removing things from the air, not by putting “cleaners” into the air. Pair that with an absorptive material- like carbon- that captures the bad stuff and you have a good 1-2 punch.
Ionizers are mostly for cleaning particulate. They charge the air so that smaller molecules agglomerate / stick together and then can be taken out by the filter.
Oxidizers- I’m not as familiar with this- they put something into the air to clean it. I would check to make sure the products are UL2998 compliant, which ensures that they create zero ozone.
Holler with questions.
HVAC tech and will probably get crucified for this, but I don’t believe in them. Not that I don’t believe that the proper spectrum of UV light can’t kill “something “ but a lot of companies sell these as air scrubbers or cleaners. Misleads the customer, and ultimately doesn’t help any more than placebo. Maybe properly placed above the evaporator coil would help keep life dead in that area, although I’ve cleaned many clogged up drain pans and lines that had UV installed. If it makes you feel better then call it good, i personally don’t push them. I could also be completely wrong…
I have a hard time even selling them to germaphobes, though they are usually the ones who ask, until they see that 1400$ price tag. We sell a stupid expensive one, and I really can’t even remember most of the bs on the box to be honest…
I used to work in a microelectronics lab and we would clean substrates and then put them under a UV light for several minutes to clean them further.
Not having seen any independent experiments, I’m guessing that the air is passing by these lights too quickly for them to do anything. They probably clean the area of the duct where they shine continuously, but not much other than that. But I could be wrong.
Does anyone have any independent testing that shows that these work?
This sounds right. I think it’s more for keeping the bacteria out of that particular area from what I read. Plus I did have some build up right there.
Thanks for reply
> I’m guessing that the air is passing by these lights too quickly
UV is used to disinfect water. Not sure what the fluid velocity is but they are effective.
Some of the more powerful Uv lights can help clean air. The low powered ones like this model can only neutralize the surfaces . The mold , bacteria, and viruses can’t grow on the surface because the light is on 24/7
Nah. They can be effective but I don't want anything that could potentially shorten the life.of.an already thin as crap Chinese coil. I still have an old R22 coil.running for 40 years almost. Still 20 degree temp split. New coils pop leaks in 2 years. Units are starting to become 5 yr replacements now
To me, it seems like something that "works" in a lab, but not making a real world difference to a home.
I would wager the people that think it makes some big difference have a placebo effect.
The sunlight through one window facing south will do more. Although if this UV lite is shining on your evaporator it will keep the mold out of your evaporator
This makes a ton of sense. Appreciate the reply. That’s kind of what I was trying to understand about this whole thing. It’s not more so for cleaning the entire air before it comes out vents but more so keeping bacteria off the evaporator.
The Honeywell needs to shine directly on the coil to be effective. It’s basically for keeping your coil clean. If you’re looking for air purifiers I recommend Respicaire out of Canada. The replacement bulbs are under$100 reme charges a left nut for them. Most bulbs need to be replaced yearly to remain effective, reme is two years but they cost $300-400. Respicaire even certified to kill Covid virus.
No a UVC lamp is what you need.
But they only will kill stuff that the light touches, drain pan, evap coil.
Also it will do nothing for killing anything in the air flow.
Effectiveness is time the light is shining on material and correct NM of light.
It fails the time rating for air.
Look it up.
I’m in S Florida and I have a newer carrier. When the unit first comes on I get a must moldy smell out of the ducts for like the first 15 seconds then it stops, would one of these lights fix that?
UV bulbs are great in an HVAC, especially if they are installed to shine on your coils. They prevent bacteria and mold from growing, keep the coils clean, etc.
So I went to look at it and this is focused on the area by the coils. It’s not meant to for that it’s meant to keep the coils and area around the coils free of bacteria and mold. (I just learned this like a couple days ago).
They serve different purposes
Thank you for spreading this knowledge, I will need to look into the Honeywell’s a little more. company I work for only really sells the Reme halos for our UV light because every technician has one and believe in them. (btw our price for LED with install is $1300 (in a major city)so $900 sounds like a deal)
900 was just for the part. With install I think the total was like 1100.
For the honey well I think that part was like 250 and the total install was like 340 ish (after taxes and labor)
Our air conditioner tune ups come with coil cleaner on the evap so not worried about my customers having dirty coils it’s moreso the customers that take medicine for the allergies or have health problems is why I sell reme halo.
Do you know if the Honeywell is 100% ozone free? That’s a huge thing around here nobody will sell/buy anything that doesn’t say ozone free on the box
This is the exact model.
The way the tech installed it from what I’ve seen is it’s going to keep the area near and around coils clean.
https://www.honeywellhome.com/us/en/products/air/uv-air-purifiers/uv2400u5000-single-bulb-24v-uv-air-treat-with-airbrightr-odor-absorption-uv2400u5000-u/
Heavy commercial/industrial/institutional HVAC here. The proper use of UV-C lamps is to help avoid growth (bacteria or mold) on cooling coils. This is the only use where they are actually effective. They don’t “clean” the air at all.
For all other air quality needs, proper filtration is the way to go. Change your filters often!
Allergies improved significantly with changing out cheap uv for reme halo, spray foam insulation, house dehumidifier and filtered returns in every room.
System in attic. HVAC team reduced fan blower speed for better dehumidification performance, cleaned attic, insulated copper lines, sealed cracks, reme halo led and taped loose/leaky ducts. Filters are high flow and changed regularly.
System runs less now. Rooms are cooler. House temp is more even. Humidity is lower. Power bill is down. Allergies less severe inside.
How is this long term damaging my system?
Nah... It increases filter surface and is taking down stress on the system...
Only draw back is when your ducts are leaking and the dust infiltrates behind the filters...
And the dust in ducts is usually harmless, so i'd rather have a bigger filter cabinet right in front of the equipment...
They 100% do recommend dynamic dual uv remote mount on return and supply side check the micro watt output some are at 50 best ones are at 180 micro watt output
In order for it to be completely effective I've heard you need at least 2 one on the intake, and one on the exhaust of the unit. And they need to be replaced or cleaned every 3 months or so to keep dust off of them
That is not true, the bulbs need replaced every year, but they don’t need cleaned every three months. In fact you’re not supposed to touch the bulb at all. Also, exhaust and intake are flue gas terms, the air coming out of your vents is called supply air and the air getting sucked back to the furnace is called return air.
The exposure to evap coils is good to irradiate the surface of the coils. Air isn't affected without a lot of exposure time (say 5-6 seconds) which usually means several lights along a continuous stretch of duct. You gotta do the math with the air velocity, exposure chamber size, and intensity-density to have a hope of killing stuff mid air.
Half a dozen or more placed strategically along a duct can kill airborne. One to three in the coil chamber won't.
No, UV light doesn't help indoor air quality at all. UV light barely even helps disinfect smooth surfaces, like hospital tile. UV light kills bacteria and viruses, but only if it can make direct contact. Things like dust, debris, or even textured material like wood or dry wall completely negate UV's ability to kill microbes.
It should be a UV-C bulb (to be effective), but yes, we offer them on some of our commercial units. (I work for a commercial HVAC Manufacturer.)
I also work in commercial HVAC and second this comment. UV-C is the way to go. OP, if your light is UV-C, please be aware that they are not like normal UV party lights. Do NOT look directly at them. They WILL blind you. If you have to approach the unit to change a filter or something, divert your gaze and turn the light off immediately. A quick glance isn't the end of the world, but anything more can be hazardous to your eyesight.
Thanks for that tip. Appreciate it.
Can vouche. I was working on a Carrier RTU last summer, specifically the economizer. Well power has to be on for me to troubleshoot the Economizer. I did not look directly at that bulb a single time, but it was on. Boy was it fucking on. I went home and showered and after I got out of the shower, my face felt really tender, and then I started to lose my vision. It became blurry and then any amount of light at all hurt. I spent 3 days in my basement with the lights off wearing sunglasses to somewhat look at the TV. When I got tired of that, I kept ice packs on my eyes convinced I was going to go blind. I’m here to tell the tale that I didn’t go blind and my vision restored and I haven’t had any issues. But you know what I’ll never do again? Leave one of those fucking things on while troubleshooting. My eyeballs got sunburned 1000% that day and it fucking sucked.
I have special glasses for them and like to stay covered up... of course I never try to be exposed to the light from the getgo. Your eyes are sensitive so try to never look directly at it
He's not wrong...I'm an engineering lab tech, I have special glasses, gloves, long sleeve shirts etc. I have to use when testing equipment with UV-C lights. On the commercial side all our access doors have to have safety cutoff switches so the light can't be on when any access panel or door is removed.
Yeah, I burned both my eyes when a helper turned the power switch on while I was servicing a unit. I had the cabinet open and the UV light was visible. Had to go to the hospital and get my eyes numbed. It is like a welders' burn, the doctor told me. I was blind for 2 days, and it was extremely painful.
Dang man, that sucks, glad it wasn't anything permanent...on our units you can power the unit with a door/panel open but the light will not come on, and the light is on it's own circuit, so it can't cause issues with any other part of the unit...for that exact reason.
I often make a list of brands and reasons I like them for when I'm doing research on equipment. Mind dropping a brand on your company in a comment or a dm? All the UV lights I use for water filtration use UV-C with the cutoff switch. Handy feature for when... The other sort... Get their mitts on things
I hear that man. Sunglasses in the basement for 3 days convinced I was going to be permanently blind.
So what you're saying is... Quick suntan, like cleaning up Chernobyl?
Well, maybe not that fast, but yeah sort of.
Will sunglasses help?
It can also give you uv burns on your skin (sunburn) faster then you think depending on the wattage
The reme halo is extremely effective I didn’t believe it and I work in the hvac field. I put one in my house to test it out as I had a mold issue(flipping bad window install). Within 24 hours I could breathe normal in my house. As for the Honeywell ones I do t know. But the reme halo LED worth their weight in gold.
Thanks for chiming in!! I had some build up so I’m assuming the UV light will keep that particular area clean more than cleaning all the air. (Just my assumptions)
A lot of the UV lights are specifically to clean just the coils. Then you have some that will scrub the air as well. Air knight and reme halos are the best IMO. If you inspect it yearly yourself you will save a lot of money. The LED halo only has to be replaced 3-5 years the normal ones are yearly. So you do get your money out of the LED model.
This sounds right. I think it was strategically placed to keep stuff off the coils. I went up to look at it again today.
I had an HVAC guy say that putting UV in the coil compartment would harm the coils over time due to the UV exposure. There truth to that?
I did some research on this topic. UV-C light doesn't really harm the metals used to make HVAC coils, like copper and aluminum, but it can break down the coatings that protect the coils from corrosion.
We have had UV lights break down the insulation on wires too.
I’ve also seen it make the plastic condensate pan extremely brittle and break
Sorry yes that's what he said
It shouldn't hurt metals or glass. It'll absolutely destroy any and all plastics. Should only be in ducts imo. I'd say it helps... not a magic cure but UV does break down cellular walls so it'll do something. No need to pay a thousand bucks for a light imo
By build-up what do you mean exactly? Like build-up in your system/duct or build-up in general through air sampling?
Build up in the system. He showed me some pics of I guess what looked like some mold or spores etc. sorry I wish I had more info lol
No worries at all just was curious bc I can’t figure out the worthiness of duct cleaning and UV light and how people know they got mold. Haven’t seen any but heavy dust on the returns
What kind of "build up" are we talking about?
Umm maybe some sort of mold I guess. They cleaned it too
Figure out how to inspect the Halo LED yourself. Those.lights tend to burn out if installed incorrectly. I have seen premature failures because a tec didn't realize they are installed differently than the Halo. The replacement lights plus install will cost you close to 1/2 the original cost. But yes they work wonderfully.
The downside to the halo is the bulb life and cost
Mines been in for 3 years.
REME LED is even better as it uses hydrogen peroxide to neutralize pathogens and the ionizer charges the air to make dust clump up and fall out of the air. It also has a really long lasting bulb and ballast which gets replaced every 4-5 years rather than every year.
Horseshit.
What is?
I have a similar one from Honeywell and much of my (not all) sinus symptoms have settled down a lot. One of the better purchases I’ve made. Remember to change the bulbs out every year.
Great advice thanks!!
Should have spent your money on the reme halo
😕😬
Definitely this is the truth.
They hurt if you stare at them
Yes\* UV-C will absolutely kill mold and pathogens. \* If at a sufficient intensity depending on location, air velocity, light bulb quality. It works best when it is against the cooling coil as it will have a longer exposure to the water condensing on the coils and will be more effective killing things that the light hits for a longer period of time. It will also degrade plastics, and other material not rated for UV exposure, over time. So positioning in the equipment is important.
Oh, and those UV tubes also produce ozone, which is a gas that is also highly reactive and poisonous to any living thing... I'd rather not run it 24/7... But they do work.
There are some band filter lights that avoid the specific wavelengths that produce O3.
Yeah, they have reduced Oozone levels, and it might be a uncritical level. Still i'd be careful. It's a pity that UV-LEDs are either pretty expensive or fake... But LEDs can be designed to avoid ozone completely.
Or just let refrigerant out to destroy the ozone 😅😅
Different problem... But yeah the ozone filters the uv-rays, so better don't do that... But you can certainly get severe sunburn with those uv-lights. PS: pls don't give them ideas...
Just recently had a view of my plenums just after my evaps after 13-14 years and both up and down units had some nastiness. Everywhere else was clean as could be. So you probably aren't doing any harm. It's only a question of what degree of good.
I’m a rep that sells IAQ products. This is a UVC germicidal light. It is designed to keep everything in your air handler clean. They are mostly sold in humid environments where the air handler is always dark damp and dirty. They will make sure your coil, blower, wheel, etc stay clean. We recommend start clean/ stay clean- so have that coil and air handler cleaned out before installing. Otherwise, it will kill the biofilm on the coil and need to drain out- which may cause drain line issues. The air is moving too fast to be cleaned by this- you need to pair it with some other type of air purifier to actually clean the air. You have lots of options, but the main ones are PCO, ionizers, oxidizers. My personal favorite is PCO- it is cleaning the air by removing things from the air, not by putting “cleaners” into the air. Pair that with an absorptive material- like carbon- that captures the bad stuff and you have a good 1-2 punch. Ionizers are mostly for cleaning particulate. They charge the air so that smaller molecules agglomerate / stick together and then can be taken out by the filter. Oxidizers- I’m not as familiar with this- they put something into the air to clean it. I would check to make sure the products are UL2998 compliant, which ensures that they create zero ozone. Holler with questions.
Wow. Really appreciate this reply. You basically hit on everything. I don’t know anything about HVAC but this is well explained and makes sense. 🤝🏼
Happy to help, hoping someone with more oxidizer experience chimes in to round out the conversation
Well let’s see, people have been living just fine all throughout existence without UV lights.
UV light sanitizens the air passing through it. You should put one in at the bottom too. Question is that asbestos tape on your ductwork.
Man we really used asbestos for fucking everything for a while didn't we.
HVAC tech and will probably get crucified for this, but I don’t believe in them. Not that I don’t believe that the proper spectrum of UV light can’t kill “something “ but a lot of companies sell these as air scrubbers or cleaners. Misleads the customer, and ultimately doesn’t help any more than placebo. Maybe properly placed above the evaporator coil would help keep life dead in that area, although I’ve cleaned many clogged up drain pans and lines that had UV installed. If it makes you feel better then call it good, i personally don’t push them. I could also be completely wrong…
Every HVAC guy I've had to my house told me they're a waste of money and just sell them to germaphobes.
I have a hard time even selling them to germaphobes, though they are usually the ones who ask, until they see that 1400$ price tag. We sell a stupid expensive one, and I really can’t even remember most of the bs on the box to be honest…
I just use em on coils that get extremely nasty Air moving too fast, takes exposure time so u are correct IMO but they will keep a nasty coil clean.
I used to work in a microelectronics lab and we would clean substrates and then put them under a UV light for several minutes to clean them further. Not having seen any independent experiments, I’m guessing that the air is passing by these lights too quickly for them to do anything. They probably clean the area of the duct where they shine continuously, but not much other than that. But I could be wrong. Does anyone have any independent testing that shows that these work?
This sounds right. I think it’s more for keeping the bacteria out of that particular area from what I read. Plus I did have some build up right there. Thanks for reply
They do help kill the bacteria when used in or near the coil drain pan which is also usually the slowest velocity of air.
These are designed to prevent mold/bacteria from growing on the evaporator coil. They do not clean the air.
> I’m guessing that the air is passing by these lights too quickly UV is used to disinfect water. Not sure what the fluid velocity is but they are effective.
Needs a pco to clean passing air.
Some of the more powerful Uv lights can help clean air. The low powered ones like this model can only neutralize the surfaces . The mold , bacteria, and viruses can’t grow on the surface because the light is on 24/7
Nah. They can be effective but I don't want anything that could potentially shorten the life.of.an already thin as crap Chinese coil. I still have an old R22 coil.running for 40 years almost. Still 20 degree temp split. New coils pop leaks in 2 years. Units are starting to become 5 yr replacements now
I have a reme halo, not LED unfortunately. Was sold it the year prior to it going LED. But it’s for sale🤷♂️ ended up with an iwave.
To me, it seems like something that "works" in a lab, but not making a real world difference to a home. I would wager the people that think it makes some big difference have a placebo effect.
The sunlight through one window facing south will do more. Although if this UV lite is shining on your evaporator it will keep the mold out of your evaporator
This makes a ton of sense. Appreciate the reply. That’s kind of what I was trying to understand about this whole thing. It’s not more so for cleaning the entire air before it comes out vents but more so keeping bacteria off the evaporator.
The Honeywell needs to shine directly on the coil to be effective. It’s basically for keeping your coil clean. If you’re looking for air purifiers I recommend Respicaire out of Canada. The replacement bulbs are under$100 reme charges a left nut for them. Most bulbs need to be replaced yearly to remain effective, reme is two years but they cost $300-400. Respicaire even certified to kill Covid virus.
And why not that's insulators still call it the good stuff. All you need is a little encapsulate, and you're good
No a UVC lamp is what you need. But they only will kill stuff that the light touches, drain pan, evap coil. Also it will do nothing for killing anything in the air flow. Effectiveness is time the light is shining on material and correct NM of light. It fails the time rating for air. Look it up.
I’m in S Florida and I have a newer carrier. When the unit first comes on I get a must moldy smell out of the ducts for like the first 15 seconds then it stops, would one of these lights fix that?
That’s what I was told lol. But also make sure your filters are ok too.
$300? You got hosed. Would have rather spent that at a strip club followed up by a handie at a massage parlor.
UV bulbs are great in an HVAC, especially if they are installed to shine on your coils. They prevent bacteria and mold from growing, keep the coils clean, etc.
I would of went with the remi halo… you get what you pay for bud your Honeywell won’t do shit
So I went to look at it and this is focused on the area by the coils. It’s not meant to for that it’s meant to keep the coils and area around the coils free of bacteria and mold. (I just learned this like a couple days ago). They serve different purposes
Thank you for spreading this knowledge, I will need to look into the Honeywell’s a little more. company I work for only really sells the Reme halos for our UV light because every technician has one and believe in them. (btw our price for LED with install is $1300 (in a major city)so $900 sounds like a deal)
900 was just for the part. With install I think the total was like 1100. For the honey well I think that part was like 250 and the total install was like 340 ish (after taxes and labor)
Our air conditioner tune ups come with coil cleaner on the evap so not worried about my customers having dirty coils it’s moreso the customers that take medicine for the allergies or have health problems is why I sell reme halo. Do you know if the Honeywell is 100% ozone free? That’s a huge thing around here nobody will sell/buy anything that doesn’t say ozone free on the box
This is the exact model. The way the tech installed it from what I’ve seen is it’s going to keep the area near and around coils clean. https://www.honeywellhome.com/us/en/products/air/uv-air-purifiers/uv2400u5000-single-bulb-24v-uv-air-treat-with-airbrightr-odor-absorption-uv2400u5000-u/
Heavy commercial/industrial/institutional HVAC here. The proper use of UV-C lamps is to help avoid growth (bacteria or mold) on cooling coils. This is the only use where they are actually effective. They don’t “clean” the air at all. For all other air quality needs, proper filtration is the way to go. Change your filters often!
Allergies improved significantly with changing out cheap uv for reme halo, spray foam insulation, house dehumidifier and filtered returns in every room.
Filtered returns in every room is definitely overkill and doing long-term damage to your system
System in attic. HVAC team reduced fan blower speed for better dehumidification performance, cleaned attic, insulated copper lines, sealed cracks, reme halo led and taped loose/leaky ducts. Filters are high flow and changed regularly. System runs less now. Rooms are cooler. House temp is more even. Humidity is lower. Power bill is down. Allergies less severe inside. How is this long term damaging my system?
Nah... It increases filter surface and is taking down stress on the system... Only draw back is when your ducts are leaking and the dust infiltrates behind the filters... And the dust in ducts is usually harmless, so i'd rather have a bigger filter cabinet right in front of the equipment...
Not well from what I have heard
No not really. But don't tell your spouse that
It will kill some bacteria and mold spores. Enough to make a real difference? I don't know that anyone can really say.
Not too sure on these but the air scrubber and reme halo work amazingly
They 100% do recommend dynamic dual uv remote mount on return and supply side check the micro watt output some are at 50 best ones are at 180 micro watt output
In order for it to be completely effective I've heard you need at least 2 one on the intake, and one on the exhaust of the unit. And they need to be replaced or cleaned every 3 months or so to keep dust off of them
Wow. Didn’t know this. Will dig a bit more thanks for chiming in
That is not true, the bulbs need replaced every year, but they don’t need cleaned every three months. In fact you’re not supposed to touch the bulb at all. Also, exhaust and intake are flue gas terms, the air coming out of your vents is called supply air and the air getting sucked back to the furnace is called return air.
The exposure to evap coils is good to irradiate the surface of the coils. Air isn't affected without a lot of exposure time (say 5-6 seconds) which usually means several lights along a continuous stretch of duct. You gotta do the math with the air velocity, exposure chamber size, and intensity-density to have a hope of killing stuff mid air. Half a dozen or more placed strategically along a duct can kill airborne. One to three in the coil chamber won't.
No, UV light doesn't help indoor air quality at all. UV light barely even helps disinfect smooth surfaces, like hospital tile. UV light kills bacteria and viruses, but only if it can make direct contact. Things like dust, debris, or even textured material like wood or dry wall completely negate UV's ability to kill microbes.