Nu-Calgon 4291-08 Nu-Brite, 1- Gallon, Auto Oil

Works perfectly , cleans coils bit read the instructions you don’t want to over use .

Delivery was on time. Great product. I've been using it for years. Thank you!

Great product, pretty potent stuff. I manned-up and used it with shorts and without gloves. Every now and then a drop would fly on my skin and quickly started to burn. No marks or long lasting affects. I did the heavy use 1:4 ratio and mixed 3.2 cups of this with 12.8 cups of water into my 1 gallon sprayer. I went nuts and used the whole gallon for one application. After I sprayed it into the crevices it started to foam up. I sprayed the inside too for the heck of it. After a few minutes the foam started to look brown as it carried the dirt out of the cracks. About 15 minutes later I rinsed it all off with water. After putting everything back together and turning on my A/C, man I tell ya that thing is many times quieter than it was before. I've had to open the door to check that it's even on. It was getting louder and louder as each month passed. You kind of get used to it since it's a slow progression of noise. The motor can work less and cool more efficiently. I'm sure it'll show in my electricity bill. What led me to getting this product is that the compressor kept itself off after overheating while the fan was still turning. I came home and the furnace was still circulating inside air but it was warm at 82 deg. I ordered the product then luckily the day it came the compressor/fan was so loud we had to turn it all off so the neighbors wouldn't complain. Last season I used a $5 can of cleaner from the local hardware store. Did it's job for one season. But from now on I'm using this product every Spring.

The product works pretty well. I’ve had some in the past that didn’t foam up well. This yields a pretty exothermic reaction. There was a tree frog in the bottom that I couldn’t reach to get out. He was dead in about 30 seconds after spraying. If you take the top off the unit, don’t put your face over the unit. The fumes are pretty tough. Also, don’t let it sit on your base too long, or it will bleach out the plastic. Otherwise, it works as expected. The pictures below are two units. They were both the same black color. I learned from the first one what can happen if it sits too long.

Bought this along with the hvac guys coil cleaner gun. Saw it in the back of the ac guys truck. Worked great. The units look like new and I have enough left for two more cleanings. Super cost effective. Very happy!

This stuff is GREAT I cleaned my 2015 ram 2500 radiator a d all coils in front. This stuff foams and pulls crud out like crazy. As you should know wear eye protection and chemical gloves it don't burn skin but it will burn cuts and scratches on your hand. And cleaned my hvac unit coils works great. It do take alot I just used a spray bottle no scrubbing I use pressure washer. Highly recommend!!

Excellent AC fan cleaner. You won't be disappointed

This is good for the machine.