Duct Fresh Gel - HVAC Air Freshener, Cleaner, Deodorizer Non Toxic for Odor Block, Small

We reside in central Florida. It's hot! Our air handler is in the attic. After replacing our old system with a new 2-stage 5-ton central air conditioning system last July, the air handler experienced a sweating issue. We guessed that mold occured in our plenums or ducts. This winter we experienced musty or moldy or an ozone like odor coming from our central AC, especially one zone in particular. We truly believe it was affecting our health. We installed a RGF REME HALO Whole Home In-Duct Air Purifier. I'm sure it's a good thing but It did not help. We had our air quality tested, all normal results. The HVAC professionals cleaned the original coil on two occasions and conducted a fogging service. The smell remained. 7 or 8 months after installation the coil was replaced. The sweating problem was solved, but the odor continued. We purchased "Duct Fresh Gel - HVAC Air Freshener, Cleaner, Deodorizer Non Toxic for Odor Block, Small" from Amazon. We placed an open container in one of the return ducts close to the air handler. Amazing. Really. For all intent and purposes, the problem is solved. While there is a rare occasional ever so slight whiff of the odor, but for 99.99% of the time, the odor is gone. We are beyond pleased.

This product works well in our HVAC duct system to keep the musty odors eliminated during cooling season. The first time we used it we had to pop the gel out of the container it came in and put it in a larger container so the gel had more surface area exposed to the air flow in our return air duct. After 3 weeks of initial use the gel was almost all gone along with the musty odor and we dropped the remaining gel back into the original container to continue to maintain the system. The gel scent is not strong enough to be noticeable in our home but it has made the air odor more pleasant. We are purchasing additional product to keep maintaining the odor. We are very pleased with the product.

It does not work, item states gel, but it was hard as a rock.

This stuff worked well to elimanate some mildew odor i had from AC to heat in the fall. But only lasted a month, not 3 months as advertised. Its good, but expensive.

Very good service and a reasonable price. The scent is OK too.

I put one of these, opened, into the furnace housing right after the filter and it really cleared the air without leaving a strong aroma of any kind. Very slight pleasant aroma present. My house is approx. 2500', 2 stories, and this fit the bill perfectly. Got rid of those slight odors that I can never track down. Oh the curse of having a very sensitive sense of smell. Especially around the holiday season when there may be cardboard boxes around. They tend to give off a somewhat offensive odor with the windows closed for Winter. Same goes for cardboard boxes in the Summer when it gets warm inside or the windows are closed for air conditioner usage.

This stuff WORKS! FOLLOW THE DIRECTIONS!!!! Worked wonders in the neglected mildewy smelling hvac system in our new home in Florida! Start with new filters. Use the spray from the same maker GENEROUSLY FIRST in the intake with the fan running to distribute into ducts, then use these on top of the filter in the intake. follow the directions and empty the gel block in a larger plastic container so all sides are exposed or it will not work right! A bit pricey but nothing else worked, duct cleaning is a bait and switch racket especially here in Florida! Try this!!!

Not worth it. It does work well... for a couple of days. Then, it dries out and is useless. Definitely not worth the price.