Nu-Calgon 417175 Evap Foam

The Nu-Calgon 4171-75 Evap Foam No Rinse Evaporator Coil Cleaner is a powerful and convenient solution for maintaining your HVAC system. This 18-ounce spray quickly dissolves dirt, grease, and debris from evaporator coils, improving efficiency and airflow. The no-rinse formula saves time and hassle, as it simply drains away during normal system operation. Plus, the pleasant citrus scent leaves your space smelling fresh after cleaning. It’s a reliable and easy-to-use product for DIY maintenance or professional use.Pros:1. No Rinse Needed: Saves time by eliminating the need for rinsing.2. Effective Cleaning: Dissolves grease, grime, and debris effortlessly.3. Improves Efficiency: Helps enhance airflow and system performance.4. Pleasant Scent: Citrus aroma masks the usual chemical smell.5. Easy to Use: Spray-on formula simplifies application.Cons:1. Aerosol Spray Limitations: Requires proper ventilation during use.2. Not for All Coils: Check compatibility with your specific HVAC system before use.This coil cleaner is an excellent choice for keeping your HVAC system running smoothly. Its effective cleaning power and easy application make it a great tool for both professionals and DIY enthusiasts.

I have two Midea 8000 BTU window air conditioning units I purchased way back in June 2022.The first one I got worked so well I bought and installed a second unit, when my rooftop 3 ton unit did the same old conk out during a heatwave that summer.Needless to say I take very good care of both units, and try to keep them in tip top working condition. I do not want to be with out AC again.Even with that good maintenance, both units seemed to be struggling just a bit and I read about deep cleaning (not just rinsing with a hose and scrubbing with a brush) the evaporator, and condenser coils as part of the routine.I found this item, and after reading the reviews, and watching the videos, and thought I would try Nu-Calgon 417175 Evap Foam. Purchased Jun 28, 2024 Size: 1.13 Pound (Pack of 1).It took me a bit, although not long to figure out, you need to keep shaking the can to keep it foaming.Example: Shake the can, spray a section of the coil, shake the can, spray another section of the coil, and so on like that until the entire coil was coated. I also got a couple of paper towels to keep my hands clean.It says it can be left on, but having never used Nu-Calgon 417175 Evap Foam before, I thought I would rinse it off anyway. After an hour or so, I got the brush and scrubbed the coils. Then I used a two gallon pump up gardening sprayer with plain water for the rinsing part.Even though previously I washed and used a brush on the coils yearly, the amount of dirt that evaded my efforts was... well, almost shameful. Nu-Calgon 417175 Evap Foam removed stuff I didn't even know was there. The rinse catch bucket was proof enough... ack!Call me nuts, but I like the scent. It didn't bother me at all.Currently we are in the midst of a nasty brutal heatwave this year, but you wouldn't know it in the house because both AC units are running as if they were new, out-of-the-box. This product works, you may want to give it a try.Thanks Nu-Calgon 417175 Evap Foam for helping me keep those AC units clean!

Works great. Smells like public restroom.

This stuff works great1) if you can get to your inside AC coils2) buy two because you will want two3) also have spray bottle with water to rinse after first application4) make sure your evap drain is working well because the black gunk has to go somewhere (I use my shop vac from OUTSIDE to pull thru some water/ vinegar before using this citrus smelling spray/foam)

Spray it on, let it sit 10 minutes and hose it off. works great. I saw a video where the person's AC air temperature went from 56 to 53 degrees after treatment.

This stuff works great. Easy to apply and does exactly what it’s supposed to do. No complaints

good stuff and smells good. Cleans coils well

Works but I have to do several applications