akg4y Posted January 30, 2009 Posted January 30, 2009 Has anyone tried something like this:http://www.airgenerate.com/Supposedly pays for itself relatively quickly in a household of 3-4 people.
thecodeman Posted January 30, 2009 Posted January 30, 2009 Interesting. Wonder how this compares with the on-demand tankless heaters.
akg4y Posted January 30, 2009 Author Posted January 30, 2009 I think tankless ones are better, but this is a good solution for existing storage water heaters and can be installed by DIYers.Found this site, pretty helpful:http://apps1.eere.energy.gov/consumer/your_home/water_heating/index.cfm/mytopic=12760
CFUG Posted October 20, 2010 Posted October 20, 2010 According to their savings calculator, I'd save $25/yr. It would take me 26 yrs. to payback. Where do I sign?
1speedjim Posted October 21, 2010 Posted October 21, 2010 Yes, heat pump water heaters are a good alternative if you rely on electricity for heating water. We installed an AirTap in a utility company demonstration home that underwent a year of testing by a team of scientists from NREL. They verified the manufacturer's claim that it cuts electricity use by 70%. In our area, the typical ratepayer would save $35 a month, for a decent 3-year payback. But if your existing tank is more than 5 years old, consider a new heat pump water heater. GE or Rheem make them.
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