It is true that heat pump water heaters basically steal heat from the surrounding air to warm the water, so, in northern climates a heated basement (which is underground and kept at Earth ambient temperature) works OK but in a kitchen or bathroom it is not a good solution (except in hot summer weather as Oilpan points out...). Curious why yours died Oilpan and why you did not fix it? the chip should have been warranteed...
We have a HW coil in the wood stove, which does occasionally pop the T/P valve so we added a copper pipe loop int he bedroom with a ball valve to allow small amounts of hot hot water to thermosiphon thru the loop- manual adjustment keeps water hot enough for all uses but not boiling..... plus, a little extra heat in the bedroom.Oilpan4 wrote: ↑Mon Dec 21, 2020 7:06 amYeah when the heat needed to be on I turned off the heat pump and ran resistance heating or use the hot water plumbing I added to the coal furnace.
Need to add a thermostatic valve to the hot water heater cause after running the coal furnace all night that water gets freaking hot. I haven't popped the TP valve yet.
Sorry, I have not kept track of actual savings, in the rentals that is hard to do anyway because of different habits among the tenants, but they DO consume less electricity and have, so far, been OK for maintenance. I install them myself, some states till allow this but not much longer I imagine.....Kieran973 wrote: ↑Mon Dec 21, 2020 2:28 pmThe reasons I think HPWHs are probably less reliable than regular electric and natural gas water heaters are 1.) I believe they’re more complex/elegant — there’s more opportunity for things to break and 2.) they’re relatively new terrain for companies like Rheem, AO Smith, etc who have been making water heaters for decades but have only been making HPWHs for what, less than 10 years?
That being said, the actual reliability stats are important. Can anyone suggest any?
And for those who have already installed: any advice you might offer? What did you pay for labor, what is your annual usage like, how happy are you with the performance of your unit? If I go through with this, I’m planning to size up (65 gallon HPWH for family of 3), to insist on a professional contractor model as opposed to a consumer model, and to try and get a better labor warranty than the one-year warranty that Leftie referred to (which seems standard on the box store consumer models).