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Old 07-08-2013, 04:35 PM   #1
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No access to HVAC Evaporator Coil


Hi,

I was trying to plan to clean the evaporator coil on my 10 year old furnace, but noticed that there is no access. There is sealed metal ducting. What is the best way to open this up? Does it require cutting the duct and putting an access sheet metal? What tool would be required to cut this thick duct?

Thanks
Jay

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Old 07-08-2013, 04:55 PM   #2
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Old 07-08-2013, 05:02 PM   #3
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go to HDepot and buy a pair of sheet metal snips. one cuts left the other right. under $30. and a piece of sheet metal/ joist liner tin which you can buy there and some sheet metal screws and silver foil duct tape. yellow snips cut straight.
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Old 07-08-2013, 05:16 PM   #4
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Which side would be best place to cut? Front where the copper lines are going in or on the back (other side of copper pipes?
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Old 07-08-2013, 05:28 PM   #5
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whatever is easier. the coil is a ^ shape with the Freon going in the front and the ^ in that direction too. get 2 pieces of 12x12 tin as you may want to cut both sides. not easy or fun to get under that coil especially if it has cat/dog hair in it. if it is real dirty you should spray it with Simple Green cleaner and then flush it with clean water. Have fun.
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Old 07-08-2013, 05:35 PM   #6
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Look on the oter sides. There should be a seam where they pushed the one panel on. Otherwise they would not have been able to place the A-coil on top, without doing a lot of magic tricks, to do so if it was placed inside that plenum to begin with.

Now of course there are some where the coil is inside a box, but even those have an access point on them.
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Old 07-08-2013, 05:37 PM   #7
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Some seemingly DIY jobs are best left for the professions and in my opinion this is one of those.
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Old 07-08-2013, 06:05 PM   #8
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Some seemingly DIY jobs are best left for the professions and in my opinion this is one of those.

Naw...he should go for it!
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Old 07-08-2013, 06:16 PM   #9
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I just did mine today and I haven't got a lick of sense. We have been here 20 years and have a whole mess of cats so I figured it was time. And it was too.
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Old 07-08-2013, 08:13 PM   #10
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Yeah, I don't mind cutting the sucker up and making a small access door. The next cleaning will be a lot easier.
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Old 07-08-2013, 08:16 PM   #11
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Quote:
Originally Posted by Fairview View Post
Some seemingly DIY jobs are best left for the professions and in my opinion this is one of those.
Why, I did mine when I had to open it up to put the A-Coil in my plenum. Of course it meant taking apart the whole upflow to remove the panel from the seam, but was able to do it, then put it all back together after done.

Yes there are some things that a homeowner may want to farm out, that either is beyond their abilities, or too costly to go out and rent or buy all of the tools needed, or have a time constraint that will cause them to call someone that can do it in 1/4 or 1/2 the time.

For example, I could have replaced the next door neighbor's Cast Iron Closet Flange, but that would have meant ordering the Fernco doughnut needed to replace the cast with PVC, since I cannot get it locally at any of the big box stores here in town, but could get it through a friend's mom who runs a supply house.

Then add in the time it would have taken me compared to just farming it out to a professional, who had the job done in two hours today for her, including putting the toilet in place and a new shut-off for her, while I was at the dr's office.
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Old 07-08-2013, 08:50 PM   #12
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cleaning a coil is not Rocket Science. we are not talking about playing with gas lines or anything dangerous. buy a pair of those Mechanix cutproof work gloves (HDepot should have some) as sheet metal cuts like a knife.
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Old 07-12-2013, 09:59 AM   #13
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Originally Posted by jay235 View Post
You may also want to consider a safety shut off switch in the secondary condensation drain.
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Old 07-12-2013, 10:04 AM   #14
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You are correct. Right now it just has a red cap over the second opening.
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Old 07-12-2013, 01:48 PM   #15
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Quote:
Originally Posted by yuri
cleaning a coil is not Rocket Science. we are not talking about playing with gas lines or anything dangerous. buy a pair of those Mechanix cutproof work gloves (HDepot should have some) as sheet metal cuts like a knife.
Lol

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