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⚡ Clean smarter, not harder — the pro’s choice for coil care!
ComStar 90-299 Coil Safe is a professional-grade, neutral pH coil cleaner designed to powerfully remove grease, carbon, and grime from evaporator and condenser coils. Its water-soluble, phosphate-free formula ensures easy rinsing and surface safety, while its fresh lemon scent leaves no residue. Ideal for industrial, commercial, and household use, this eco-friendly cleaner delivers fast, effective maintenance with versatile applications.






| Asin | B01D66YSDE |
| Best Sellers Rank | #85,581 in Industrial & Scientific (See Top 100 in Industrial & Scientific) #76 in Cleaning Supply Dispensers #2,608 in All-Purpose Household Cleaners |
| Brand Name | ComStar |
| Capacity | 32 Fluid Ounces |
| Contains Liquid Contents | Yes |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,591) 4.6 out of 5 stars |
| Global Trade Identification Number | 00024924902998 |
| Item Form | Foam |
| Item Type Name | Coil Safe Cleaner |
| Item Volume | 1 Quarts |
| Manufacturer | ComStar International Inc. |
| Material Features | Eco-Friendly |
| Material Type Free | Acid Free |
| Model Number | 90-299 |
| Number Of Items | 1 |
| Part Number | 90-299 |
| Scent | Unscented |
| Size | 32 Fl Oz (Pack of 1) |
| Special Features | PH Neutral |
| Special Ingredients | Sodium Gluconate |
| Specific Uses For Product | Engine |
| Surface Recommendation | Metal |
| Unit Count | 32.0 Fluid Ounces |
| Upc | 024924902998 |
User
this has sold me! it works and no odor or fumes! doesn't take much either!
Used this to clean my electronic air cleaner element's for my furnace and the filter for my orik air purifier I bought used years ago. I have never been able to get either clean, I have used dawn and hot water as well as even gave steam cleaning a shot but always had dirt stuck on my filters for my furnace ( these are aluminum so plz do not try to clean paper or any other filter media with this, it is not designed to work on anything else other then metal type filters ), my air purifier filter is also aluminum and when I got it the filter was stained with what I have to assume is tar from cigarettes. I have tried multiple cleaners and none have worked on it either. I put ( in a clean spray bottle ) 1/4 bottle of cleaner with 1/2 bottle of hot water in old windex bottle and sprayed the purifier filter, the junk stuck on there that didn't want to come off, just started running off like using a garden hose to spray mudd off your truck before washing. Side of bottle says to let sit for 5 min after spraying, I let it sit for maybe 2 to see how well it cleaned stuff and then used my shower head to spray the filters down with hot water. I have not seen the dirt run off these filters like this before. I even rinsed the dirt off to start with using the pressure spray on my shower head before spraying the cleaner and I still got double the amount of dirt to come off. When I rinsed the filters the 2nd time, the water rinsed off as much dirt as it did when I first rinsed the filters before spraying them! The air purifier filter, I had chunks coming off of this junk/ tar when I rinsed it. The odor, there is none! I'm serious, there is no odor! This stuff is about as much as the spray calgon I believe is the brand cleaner that claimed to be odorless, but wasn't. This is cheaper and is alot better since there is no fumes or odors!
User
Highly recommend! Cleans very well, and faint smell is gone once it dries
Since I am super sensitive to smells, I was worried about using this product on the inside air handler coils, as it does have a faint fragrance. I used 1 part cleaner to 2 parts water, rinsed it well with a garden hose, only turned on 1/3 (also had a wet vac standing by, in case the drain was overwhelmed, which it didn't), and after it fully dried, there was no smell. Update: After a couple of 100F days, I can report that the system is notably more efficient (the air is colder) after the cleaning, it had been 10 yrs since last cleaning. And there is no smell in house when it runs, if anything, it smells cleaner. I also replaced the start capacitor for the air handler fan.
User
Good product!
Works well!
User
Great value and seems to work well
I got this to help clean the evaporator coil on my de-humidifier that lives in the basement. The thing runs almost non-stop and has been running for 3 years.Per the instructions you can dilute this up to 4 to 1 with water depending on your level of dirt. As my coil was not filthy I went 4 to 1 and sprayed it on with a re-fillable squirt bottle. It seemed to work very well, though I did help it along with a scrub from a very soft nylon brush. It did have a mild smell to it that seemed to be to be a caustic. It was not overwhelming at all, though it might be at full strength.After a good rinse with pure water my coil came out like new. This will be my go to for refrigerators, vehicle condensers, etc. Diluted down a gallon will go a long way making this a great value.
User
Excellent cleaning product
Used this product along with a handheld manual pump foaming sprayer, cleaned both a years old tower fan and a portable a/c. Was amazed at the cleaning power of Coil Safe! This melted away and cleaned gunk that another product I used to use, premixed in a spray foaming can, didn’t even touch! Not only did it make my tower fan/air purifier at least a decade old again sparkling clean and usable again, it completely cleaned my portable a/c+ dehumidifier and cleaned out gunk from the internal drip trays and coils. Mixed this product with water in the handheld foaming sprayer I bought, let it sit and do its job, and continued the above steps with reapplying until the runoff was finally clear. Not only does this clean amazingly well, it is much more cost effective than using the premixed foaming spray cans of another popular brand. Still have half a gallon left!!! Will definitely be sticking with this product from now on!
User
DIY HVAC Condenser Cleaning
Recommended by ChatGPT and does the job of cleaning our condenser coils (along with a gentle rinse using our garden hose) on our heat pump. I’ll be using this about once a month now. Way better than paying overpriced condenser coil cleaning fees.Don’t forget to dilute 5:1.
User
Good coil cleaner.
This is a good coil cleaner.
User
Works but not safe to use inside.
This certainly cleans but as others have said I will never clean an ac inside again. It took 3 days to air out the room and I’m still a little worried about the fumes.
User
Comstar
Good!
User
Works great, a little strong scent
This worked great with cleaning our heat pumps but it is a bit strong. It does dissipate after an hour or so. Would buy again.
User
Liquid of Foam?........you decide but I made the right decision for my case....
Works Great. I am glad I ordered the liquid, not the foam because my mini split was so dirty after almost 7 years. I am to do few shots of this product waiting 15 min between and rinse with garden hose. The result is amazing. looks new now. I spend little less than the half because my mini split was need it. Next time, I will do it more often and will need less product. Thanks again
User
Good for use on your indoor unit or outdoor.
Good price here. Used to buy via ezybuy. Kinda troublesome.Now it's sold here.I usually do rinse with fresh water though after using this product.Dilute accordingly.Check the instructions.
User
L'efficacité du produit.
Utilisation pour nettoyer air climatisé. Savon très efficace, ne fait pas de mousses, se rince bien. J'ai utilisé avec un mélange de 1a 2 .
Trustpilot
5 days ago
2 months ago