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Topic Title: Heat pump water heater
Topic Summary: Any thoughts or experience?
Created On: 11/26/2017 07:27 PM
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 11/26/2017 07:27 PM
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N8crow

Posts: 1539
Joined: 07/22/2003

I'm in the market for a residential water heater. The upfront cost for the high efficiency models seem to pay off, but I haven't met anyone that has one. Thoughts appreciated!

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the older we get, the better we were
 11/27/2017 04:59 AM
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Bamboo

Posts: 4939
Joined: 07/24/2003

I'm in the same situation.  Where I live doesn't have gas, so everything is electric.  Doing a remodel and the GC is recommending a heat pump waterheater. He says he has installed quite a few and they have been working out well.  Since my water heater is inside the house an added benifit is that they put out cool air.

So no first hand experience here, but am leaning towards installing one first quarter of next year.

 



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It was a bright cold day in April, and the clocks were striking thirteen.

 11/27/2017 05:49 AM
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Central Floridave

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Joined: 07/22/2003

epicsurf just installed one. I'll ask him to look at this thread.
 11/27/2017 06:26 AM
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tom

Posts: 5900
Joined: 07/25/2003

So this is basically a garage AC,

that makes hot water too?

Win win! 

Weight set out of spare bedroom to make Mrs tom happy?

Win win win!

 11/27/2017 06:44 AM
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epicsurf

Posts: 1351
Joined: 10/25/2003

Get one! I had solar thermal and it got destroyed during Irma so now I replaced it with a Lowes 50gal AO Smith. I have a friend that researches this at the Florida Solar Energy Center and he says these along with Solar electric (PV) is a better setup than Solar thermal. It basically uses 1/3 the power if you leave it in efficiency mode (HP only) and it cools the garage as an added bonus. Probably not a good option in an enclosed closet since it needs to be vented and has a condensate line. The new Rheem supposed to be best 450W, Bradford White (formerly GE) next 500 W, then AO smith 50 gal. First too are avail in 80 gallon . Stay away from AO smith 89 gal. I gambled on the 5 yr extended warranty which may pay off. Also got 10% off the $1200 price. In efficiency mode only it does a fine job of keeping my house (2 ppl) supplied with hot water. The best part is that it blows cold air right on my workbench!!
 11/27/2017 06:46 AM
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DaveFL76

Posts: 2751
Joined: 08/16/2003

Originally posted by: tom So this is basically a garage AC, that makes hot water too? Win win!  Weight set out of spare bedroom to make Mrs tom happy? Win win win!
That's really neat; I'm intrigued! Do they have a tank to keep warm or do they run on demand and only when water's flowing?
 11/27/2017 06:14 PM
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epicsurf

Posts: 1351
Joined: 10/25/2003

There is a tank. It basically is a regular heat element water heater with a heat pump on top. You can set it to efficiency mode where it just uses the heat pump, hybrid (uses both) or electric only.
 11/27/2017 06:14 PM
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epicsurf

Posts: 1351
Joined: 10/25/2003

There is a tank. It basically is a regular heat element water heater with a heat pump on top. You can set it to efficiency mode where it just uses the heat pump, hybrid (uses both) or electric only.
 11/27/2017 06:22 PM
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RustyTruck

Posts: 17193
Joined: 08/02/2004

Don't assume you don't have gas without checking. We had it at the street, and the gas company ran it to the house for free as long as we bought two appliances.

I wouldn't trade our natural gas tankless water heater. Big savings and we're never out of hot water.

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What would Scooby-Do?
 11/27/2017 08:04 PM
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N8crow

Posts: 1539
Joined: 07/22/2003

Ok, thanks for all the feedback. I was initially discouraged because of the need for a drain line, but a friend suggested that I could use the AC drain which in my case will be very convenient. I've been looking at the Rheem that they sell at the Home Depot, and it appears that you get a pretty quick ROI about 2-3 years. So, still leaning hybrid, but also exploring tankless. Thanks for the help!

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the older we get, the better we were
 11/28/2017 03:51 AM
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Bamboo

Posts: 4939
Joined: 07/24/2003

RT - yes, gas would be my number 1 choice but definitely there are no gas lines where I live now.  Previous house had gas and loved it.   

Epicsurf - Can you give us an idea about how much cool air is given off by the water heater's heat pump?  You said yours is in the garage and blows cold air across your workbench, so does it make a noticable temp difference over the entire garage? 

Ours would be in an 150sf utility room with washer, dryer, and A/C air handler and the GC is saying tapping into the A/C drain line is the way to go.  He did say since the water heater is in an air conditioned space that we might want to keep the A/C vent closed and the room's door closed and just let the heat pump cool the utility room.

Anyway, Good to read about other's experiences with the heat pump water heater and appreciate Epicsurf sharing his research, thanks!



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It was a bright cold day in April, and the clocks were striking thirteen.



Edited: 11/28/2017 at 05:44 AM by Bamboo
 12/02/2017 09:26 AM
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ww

Posts: 14184
Joined: 08/17/2007

The AC drain line plugs occasionally if not fed bleach.

My water heater's past its life span, so heat pump sounds like a great replacement.

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