BioShieldUV® 72W HVAC UV Light Air Purifier Light Bulb - Air Filter UV Lamp for Air Conditioner, Whole House Dual UV UVC Light in Duct Filter, UVC Light for HVAC AC Air Conditioner

did the job in my A/C killed the bacteria growth that was on the cables and easy to install

Very impressed with construction quality of this UV light. The entire structure is made from sturdy metal. The flange that sits on the ductwork has a gasket material applied to it already. There are indicator lights for each bulb that show proper operation. Before installing, I tested this unit by running in a small room to make sure that it didn't produce ozone. After operating for several hours, I shut it off and stuck my nose inside and did not smell the classic metallic scent of ozone. It was a slight smell that reminded me of suntan lotion, but after doing some googling it appears that's the UV light interacting with materials inside the room I placed it. Installation was fairly easy for me since I already had a UV light that had failed. Just had to open up a couple of the holes since these bulbs were spaced further apart. Only negative I can point out is that the cord on this unit is way too short. I needed an extension cord to reach outlet to plug it in. Other than that it seems like a top notch unit with high quality construction and quality bulbs that don't produce ozone. Expect to replace the bulbs every 12 to 18 months if you're running it continuously. Even though the bulbs may continue to shine, the UV output does start to drop over time and while they may look like they're working the UV output might not be enough to control mold and mildew inside the ductwork.

This looks like a product well made and packaged with great care. It has been running for a few days but it's hard to tell how effective it is. In my situation I had only one small area it would work, and it was going to be a tight fit. I was glad to see the slotted screw holes, they can make installation mush easier except the screw head are too big to take advantage of this feature. That being said I think I'm going to order a set for the return air plenum

Very pleased. Very easy to install, includes hole saw in the exact size. Plugs into 110 volt outlet. An LED indicator for each light socket lets you know that each bulb is working. Other reviews stated these bulbs last a few thousand hours, I just plan on buying new bulbs in a few years, when needed. Might even buy now & store nearby. These are the correct wavelength, do the research UV-c is the way to go. Could be luck of the draw, but I installed these while I was very sick, no other family member got sick.

Bought 2 years ago and the original bulbs lasted almost 2 years. Ordering new bulbs now. The air seemed cleaner when I installed the unit, but that is purely subjective. I have a small humidity issue in the summer so I wanted the protection this offers. (I am getting my 32 year old A/C//Gas forced air unit replaced tomorrow). Installer suggested keeping this UV unit, so that's kind of a professional endorsement to me. (Old HVAC works but efficiency has been so greatly improved since 1993 and I wanted a variable speed fan that can auto adjust for maximum humidity control with indoor/ outdoor temp / humidity sensors and smart speed to maximize comfort. Just letting you know it's not due to the UV lamp.)

I was initially impressed with this unit. I read all of the reviews and was prepared for the installation issues regarding the wrong template etc. I used the shipping foam from the box as a template and it worked fine.Now the problem.I installed the unit in the plenum of my AC/Furnace above the evaporator coil. I started noticing a strong burning smell after turning the unit on and letting it run. The unit itself does not feel warm nor does the cord. I opened the access panel to the plenum and the smell immediately knocked me back. This means that the smell is being generated by the bulbs themselves inside the plenum. This is not a smell you can get used to or overlook. It chokes you after a few whiffs of it (at the source).I am disappointed because I had high hopes. The power (72 watts) and the price are both fantastic compared to lowered power more expensive units. I bought this to get rid of smells in my home. However, as much as I want to keep it, the smell it generates is worse than the smell I'm trying to get rid of. If the manufacture can't offer a solution I will have no choice but to return it.UPDATE: 09/19/2022I contacted the manufacture via telephone and informed them of the bad smell. They immediately apologized and offered to send me an entirely new unit. Estimated delivery date 3-5 days. I will update after receipt and testing of new unit.UPDATE: 09/23/2022Okay, this company gets 5 stars for customer service and timely responsiveness. I called them on Monday and informed them of the bad smell coming from the unit I originally purchased. They promised to ship me a new one and sure enough I received a new unit four days later.The smell is still present with the new unit but to a much lesser degree. If it does not get any worse, it could become bearable. Based on what I have been reading from other users of UV lights the smell could be ozone, I guess. I am hoping the smell dissipates the longer the unit runs.On another note, I noticed the Amazon price for this unit has gone from $89.00 to $124.97.

Our air vent cleaning guy quoted us $900 to install this. Saved us lots of money to just buy this and install ourselves.

Made a huge difference in Atlanta during allergy season!!Super easy to installWould like a sticky seal around it to hold in place before screwing it in