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Old 02-19-2013, 06:15 PM   #1
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Hot water from AC


I've never heard of this before.

Next to the 16 yr old condenser there's a metal box, 12" x 14" and about 3 or 4" deep. Its on the house.

I just learned its a 'hot water heater'. Personally I don't grasp why an AC would heat my hot water when I have a hot watertank.

Don't know if it's been working or not. It's not compatible with my new unit. He said a new water heater (for the AC) would be another $900 which I can't afford.

I've been around a lot of contractors and am surprised I never heard of this before. Are these hot water heaters very unusual or popular?

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Old 02-19-2013, 06:35 PM   #2
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Hot water from AC


hi any chance u can shoot us some pics to help us out

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Old 02-19-2013, 06:44 PM   #3
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sure.........hang on.
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Old 02-19-2013, 06:46 PM   #4
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ok ,,,
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Old 02-19-2013, 06:54 PM   #5
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Hot water from AC-dscn1542.jpgsure.........hang on.
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Old 02-19-2013, 07:33 PM   #6
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Hot water from AC


pics a bit blurry ,,, can the cover be removed for a pick inside ? and any water lines comming to or from the box ?
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Old 02-19-2013, 07:38 PM   #7
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Hot water from AC


Thanks.

I'm afraid to open things like this.

Just wondered how common it was for AC units to provide hot water.
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Old 02-19-2013, 07:40 PM   #8
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not very at all .. just loosen the screws and move cover if its loose you shud be good to go ,, be intresting to see inside
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Old 02-19-2013, 08:19 PM   #9
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Hot water from AC


Quote:
Originally Posted by Startingover View Post
Attachment 65986sure.........hang on.
This is your Heat Recovery Unit..
I'm a HVAC Install mechanic, we don't usually come across these, but when were installing a new system, we always soldier the water lines and discontinue these.
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Old 02-19-2013, 08:22 PM   #10
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hey rydan are these still mfg ? as the hrv units in canada are complety diff and where is the air handler for the hrv ?
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Old 02-19-2013, 09:05 PM   #11
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my air handler is in the garage (on the other side of wall in the photo). It's on a shelf about 3' feet high.
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Old 02-19-2013, 09:09 PM   #12
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The original owners were from N.Y and did a quality job with everything in the house.

I wondered if this was more common up north.

I better call the new AC guy and verify that he will remove this thing.
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Old 02-19-2013, 10:59 PM   #13
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Hot water from AC


The last time I saw one of those it was being used to add heat to a swimming pool.
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Old 02-20-2013, 10:18 AM   #14
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Heating a swimming pool with electric?????? Are they nuts?????
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Old 02-20-2013, 06:37 PM   #15
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Its a desuperheater. As known as a heat recovery unit. They can save you a lot on your hot water bill in the summer. They are not a popular as they once were.

They are actually cheaper to use to heat or keep a swimming pool warm the natural gas is. Since all the heat is waste heat that you are paying to get rid of anyway.

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