Heat pump water heater

CHeath Posted By CHeath, Feb 7, 2017 at 9:15 AM

  1. STIHLY DAN

    STIHLY DAN
    Minister of Fire 2.
    NULL
    

    Jan 15, 2013
    1,367
    498
    Loc:
    So NH
    That is a short term fix unless you have the ability to clean the evap coil yourself. I cleaned mine this spring and it was very easy to do.
     
  2. woodgeek

    woodgeek
    Minister of Fire 2.
    NULL
    

    Jan 27, 2008
    3,942
    762
    Loc:
    SE PA
    I have access to the coil...and it and the screen/filter both look like new (clean) after 5 years.
     
  3. velvetfoot

    velvetfoot
    Minister of Fire 2.
    NULL
    

    Dec 5, 2005
    9,705
    770
    Loc:
    Sand Lake, NY
    If you've got a coal boiler, why not use that for hot water in winter? I turn my hpwh off in the winter.
    edit: coal not oil
     
  4. Ashful

    Ashful
    Minister of Fire 2.
    NULL
    

    Mar 7, 2012
    10,745
    4,580
    Loc:
    Philadelphia
    Woodgeek and I had a little debate over this, sometime back. It likely depends on your climate and building properties, but he argued that your sub-grade walls (around here they hold 53F below 4 feet) are still supplying enough heat to a typical uninsulated block (for our region) basement utility room, that the HPWH will be more efficient. My thinking was that I have this hot boiler, anyway, and I might as well just switch to that for DHW. In my case, I also have a basement rec. room adjacent to the boiler room, so the excess heat off the boiler isn't exactly wasted (it just cuts down on how much the baseboard runs down there).

    I'm sad to report I still haven't installed an indirect HPWH (mostly because I haven't found one that fits my needs, yet) on my BoilerMate, to test and settle this debate. If anyone has a link to an indirect HPWH with 3/4" ports, which does not rely on a restrictive coaxial dip tube to connect into the boilermate tank, it would put me a step closer.
     
  5. velvetfoot

    velvetfoot
    Minister of Fire 2.
    NULL
    

    Dec 5, 2005
    9,705
    770
    Loc:
    Sand Lake, NY
    I have a previous offering from tominmaine, a Nyletherm, for several years now, and it's tied into an electric water heater. Outlet from NT goes to WH drain, inlet from NT comes from tee connection on WH cold water pipe. I don't know about 3/4" though. This manner of connection does not interfere with flow through the water heater, far as I know. It's a parallel operation thing.

    It makes a fair amount of noise when running, but I don't live in the basement.

    Tom is offering some other units for $300:
    https://www.heatingstuffllc.com/store/?model_number=WH-6BX-1

    I don't think the boilermate is insulated as well as a typical electric water heater though.
     
  6. Seasoned Oak

    Seasoned Oak
    Minister of Fire 2.
    NULL
    

    Oct 17, 2008
    4,955
    919
    Loc:
    Eastern Central PA
    I tried that but my HPWH started to leak. I find this a common occurrence as my regular electric WH in the past did not last more than 2 yrs if i left it go cold for months at a time. So now i never turn my WH off. Even if i use the boiler for endless HW. Very small leaks will evaporate quickly on a hot WH but on a cold one it will just rust to pieces. The HPWH may even be more cost effecient than the coal boiler anyway.
     
  7. Seasoned Oak

    Seasoned Oak
    Minister of Fire 2.
    NULL
    

    Oct 17, 2008
    4,955
    919
    Loc:
    Eastern Central PA
    Any kind of Electric WH seem to last so much longer if you never turn em off .
     
  8. Ashful

    Ashful
    Minister of Fire 2.
    NULL
    

    Mar 7, 2012
    10,745
    4,580
    Loc:
    Philadelphia
    Many of these units are designed as add-ons to electric water heaters, only, as they rely on the voltage supplied from the thermostat on the lower coil of the electric water heater.
     
  9. velvetfoot

    velvetfoot
    Minister of Fire 2.
    NULL
    

    Dec 5, 2005
    9,705
    770
    Loc:
    Sand Lake, NY
    I didn't know that.
     
  10. cableman

    cableman
    Minister of Fire 2.
    NULL
    

    Sep 26, 2013
    687
    87
    Loc:
    long island
    Had an f11 or f13 code on my geospring the other day, scared me till i got closer and saw clean filter.
    Had my floors sanded in aug, thats gotta be the culprit. Never had much dust anytime ive looked.
     
  11. Marshy

    Marshy
    Feeling the Heat 2.
    NULL
    

    Dec 29, 2016
    431
    105
    Loc:
    NY
    I'm going into my 4th year with my GeoSpring. I heard this past summer GE terminated the GeoSpring heater due to low sales. That is unfortunate and hope mine continues to operate 15 more years trouble free.
    Regarding the dehumidifying, I have mine drain into a 5 gal pail. I generally dump 4 gal every week in the summer. In the past Ive heated my house with a woodstove in the basement so I ran the HP mode year round. Even though it only drops the basement temp 1-2 degrees on average it feels like a lot more because of the humidity. I like mine a lot and have had no issues. I see Lowes only offers the AO Smith HPWH now...
     
    Seasoned Oak likes this.
  12. 3fordasho

    3fordasho
    Minister of Fire 2.
    NULL
    

    Jul 20, 2007
    647
    99
    Loc:
    South Central Minnesota
    Bought mine 3/15 from Lowes, Whirlpool version, I'd have to look at the manual to see who manufactured it. I use the heat pump only mode as that provides adequate hot water for the two of us. I removed a propane fired unit as just the standing pilot was costing as much as the electricity we now use to run the HPWH. Extended warranty was the same price as a regular water heater, cheap coverage out to 9 years or so. I installed in the same room as the wood furnace so plenty of excess heat in the winter for the heat pump to do its thing. I will definitely buy another unless something better comes along.
     
    Seasoned Oak and Marshy like this.
  13. Seasoned Oak

    Seasoned Oak
    Minister of Fire 2.
    NULL
    

    Oct 17, 2008
    4,955
    919
    Loc:
    Eastern Central PA
    Another reason is the HPWH only cost about $10 a month to operate. My coal boiler cost $30 a month minimum just in idle mode to stay lit, before any load is put on it. The coal boiler shines on cold days when gas or oil heat never seems to turn off . But late spring ,summer and early fall. it just idles too much to be practical to run. Especially just for hot water. Yes id buy this HPWH all over again ,cant go wrong with an appliance that pays for itself with electric savings.
     
  14. Brian26

    Brian26
    Feeling the Heat 2.
    NULL
    

    Sep 20, 2013
    290
    87
    Loc:
    Branford, CT
    I'm a little over 4 years on mine. It has been running pretty much nonstop in heat pump only mode. The only issues I had were the 2 electric elements disintegrated I believe from never actually using them. When it did a self check when I restarted it once it threw a code for bad elements. I pulled them out and they were shot. GE sent 2 new ones for free. The replacement ones were like twice the thickness.

    The only other issue was I kept getting a filter warning though it was running fine and the filter was clean. The tech said they had a upgraded fan kit that greatly increased the airflow across the condenser. The fan was way more powerful then the original one. Mine has a build date of 03/2013.

    My original cost was around $200 with local utility incentive and I caught it on sale.

    CT residents can still get them for like half the cost as there is a $600 rebate. If you put in a CT zip code at lowes the AO Smith comes up as $799 with the instant $400 utility rebate offered on local purchase. Then there is an additional $200 one for CT residents. Anyone in surrounding states could drive here and get it $400 cheaper instantly. I tipped a member off from Long Island last year I believe and he took the ferry over and saved like $600 vs buying it on Long Island.
     
  15. cableman

    cableman
    Minister of Fire 2.
    NULL
    

    Sep 26, 2013
    687
    87
    Loc:
    long island
    That was me! Thanks again!
    Running good so far, still would like to do the yearly crack the bottom valve to let sediment out.
    My nephew has an older geospring, threw a code and stop working. The company that took over sent him a bunch of stuff, ended up being the control board.
    Good to see we still have good service to support any issues that may arise.
     
  16. tom in maine

    tom in maine
    Minister of Fire 2.
    NULL
    

    Apr 4, 2008
    897
    129
    Loc:
    Searsport, Maine
    Stand alone HPWH can be rewired to work with non-electric tanks. www.heatingstuffllc.com
    has the Etek, which is what the Nyletherm was a copy of.
    We sold out of the Nyletherms although we have some controls left.
    The Etek is $365 delivered in the Continental US. If you need to rewire, I will send you the wiring diagram and the relay needed to do this.
    You will have to add an aqustat to operate the heat pump by temperature.
     
  17. sutphenj

    sutphenj
    Member 2.
    NULL
    

    Nov 19, 2010
    30
    4
    Loc:
    West MI
    Will the Etek work with marathon unit?
     
  18. tom in maine

    tom in maine
    Minister of Fire 2.
    NULL
    

    Apr 4, 2008
    897
    129
    Loc:
    Searsport, Maine
    Once rewired, yes.
     

Share This Page