sf340dvr
Joined: 05 Jul 2005
Posts: 57
Location: Appleton, WI
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 Posted: Wed Jul 12, 2006 3:08 pm Post subject: Replacing an A-Coil |
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If it's the coil around the compressor (outside), than it's not worthwhile to replace just this. If its the evaporator coil (inside), which I believe your talking about, you certainly can replace an A-coil! Though I believe the it has to have a certain size and dimension for the type of compressor you have. Here is a link from eBay; I just searched A-Coil in Home and Garden:Air Conditioning.
eBay A-Coil
At the bottom of the item description it says you can contact their staff if you have any questions. If you were interested in purchasing an A-Coil online, I would think any establishment would do the same, and be able to know if a particular A-Coil was OK for your 2-ton Carrier.
The only thing is you certainly (and legally) need a HVAC certified guy do all the freon work. This might not be a DIY thing, because they would need to come out twice if you installed it yourself. Once to recover all the freon from the A-coil and line set (the lines that go between the coil and compressor), and again after you installed the new coil to vacuum out the line set and new coil, release the freon, and top it off if it needs it. They will probably charge you a minimum of an hour labor each time. On top of that a DIY replacement of the the A-Coil could be tough. To remove an replace it you need to cut a hole in or disassemble the plenum above your furnace, assuming that's where the A-coil is, and then you need a torch hot enough to remove the line set. The line set is usually brazed to the coil with brass or copper, not soldered. Brazing is stronger, but you need at lease MAPP gas to melt the brazing.
With all this said, you're probably better off having the HVAC guy do everything, because they are better at it, and guarantee their work. If you screw something up, such as contaminate the line set while brazing, you could ruin your compressor. However, you can still buy the A-coil separately and just have the HVAC dude do the labor. Just check around to see what an A-coil goes for, add $150-200 for the labor, you'll have the total cost. Then just get quotes from HVAC contractors for the whole thing, and compare to see if it's worth getting the A-coil on your own.
I installed a whole central air system in myself that I bought off eBay, without any prior experience. I just had an HVAC guy come out, braze the lines, vacuum out the line set, and release the freon. All together it cost me $800 for a 2.5 ton/10-sheer Tempstar unit, so I saved several hundred dollars. These systems, and how they work, are simpler than perceived. However, it may not be a worthwhile DIY project in your case. |
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Kelly Houston
Joined: 14 Jun 2010
Posts: 1
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| Posted: Mon Jun 14, 2010 8:08 am Post subject: |
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The main purposes of a Heating, Ventilation, and Air-Conditioning (HVAC) system are to help maintain good indoor air quality through adequate ventilation with filtration and provide thermal comfort.Furnace Replacement
HVAC systems are among the largest energy consumers in schools. The choice and design of the HVAC system can also affect many other high performance goals, including water consumption (water cooled air conditioning equipment) and acoustics..
Last edited by Kelly Houston on Fri Sep 17, 2010 5:05 am; edited 1 time in total |
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