We show how to pull out the evaporator from the coil box and how to clean it.
HVAC Evaporator Cleaning
May 11th, 2010 
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HVAC, Residential and Commercial Plumbing
May 11th, 2010 admin 
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It’s always great to show the crap that you can dig out of an evaporator.
I was given a quote of 350.00 to “acid” clean my coils. He said it needs to be done every five years. I can’t find any information on acid dipping a/c coils. Can you give me your opinion on this?
It is a good idea to have your coils cleaned with a good coil cleaner. I prefer to use alkaline based rather than acid based coil cleaners.
Hi, I need to do this job myself, but can I do it without removing as long as I keep up with the water runoff?
Yes. It’s a messy job no matter how careful you are. I don’t recommend cleaning the coil in place if the air handler is in a closet.
Thank you for showing what is involved. We’re DYIers, but no for this job. We’re glad to know what’s involved and will pay for someone to do it. I’m sure we have a ton of gunk from the drywall dust.
Great video, but you skipped some important steps, like removing the whole disconnecting / reconnecting the copper pipes, as well as the coolant. How is that done and is it realistic for an amateur? Hosing and cleaning the coils seems easy enough, but not the piping.
Thanks. This is a task for a qualified technician. Amateurs could do more damage than good.
Thanks for watching. This is a job for a qualified technician.
thank you for all your advice. Thank You
DRZ great video. My Unit is in my garage. Do you have to remove the evaporator coil to clean it? Is there a way to just clean it without removing it. I saw a article where someone used some type of foam coil cleaner to clean it. It seems that most of the dirt is on the inside of the coil and not the outer half which I can reach easily
That’s is so true. That’s why it’s important to be sure to get the coil cleaner on the inside of the coil as well as the outside.
How often should I clean the evaporator and condenser coil?
Once per year works great.
I always try to clean evap. coils while still piped in. Any time you open a system you take a chance of contaminating the system. (Green slimmers sux)If I must take the coil out to clean it. I braze the lines closed and add nit. to coil. After I reinstall the coil I would pull into vac. 3 times and break vac. with nit. Then pull vac once more to 400 microns. Moisture is very hard to remove from the system and can lead to all kind of problems. This is not a do it yourselfers job.
whats are the symptoms of a dirty evaporator coil? besides low superheat
If the coil is extremely dirty, it could ice up.
I do commercial HVAC+R. When I bought my home about A year and a half ago, I was really keen on checking out my existing ac system. it works ok. I did the basic maintenance and cleaning at the outdoor coil, but when it came to the indoor coil, It was completely sealed in the ducting and now way to clean it. I was like WTF!? who is the ass who installed this? i cut and access door and washed the reachable supply side only. After seeing this, I guess its typical to remove the whole coil. How lame
You’re right. There’s got to be a way to make residential air handlers and coil boxes so they can be cleaned in place.
Cut the copper don’t braze it out
This is so important because doing this can help lower your electrical bill and keep your cooling system in tip top condition for the upcoming summer months.
I have a vertical furnace and my evaporator coil is above the squirrel cage bower so I cannot really pump coil cleaner or shoot a hose in here. So how am I to clean the evap coil?
I also don’t want to pull the evap coil out because it would have to be pumped down and I don’t like opening the lines up . Then pull a vacuum when all done …
Is there a non wet way to clean evap coil?
I love your videos
Thanks
@freewoodencrosses You’d have to clean the evaporator exactly the way it was done in this video. You’ll need to hire a tech that has the proper equipment to do the job right.
I just replaced my heat exchanger in my furnace and I cleaned the evaporator coil which is right above the heat exchanger and I think it was easier to do it my way than pulling out the entire evap coil… I did not have to unsweat anything.
What do you think…
I could not use a hose though
@freewoodencrosses I can see how that would work. If you didn’t use a hose did you just use a no-rinse coil cleaner?
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