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Re: heatpump vs furnace

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On Wed, 12 Oct 2016 22:57:37 +1000, Winfield Hill  
<hill@rowland.harvard.edu> wrote:

> Jon Elson wrote...
>> Winfield Hill wrote:
>>> Martin Riddle wrote...
>>>>
>>>> Do your power credits roll over to the next year? (anniversery date)
>>>> I think your allowed to change it once. And most recomend to place it
>>>> in April/May, so the winter bills can be offset.
>>>> You may find that your Jan/Feb bill are 'high'
>>>
>>> I don't know for sure, but my understanding is the
>>> credits do not expire.  However, if we make more
>>> than we consume, we don't get paid for any excess.
>>> But we can give it to someone else in our district.
>>> Like maybe our town's Senior Citizens Center.
>>>
>> WOW!  They ALLOW you to give the utility energy for
>> free!  What an incredibly generous deal!
>
>  We just replaced our entire HVAC-oil-furnace stack,
>  and elected the heat-pump option instead of a simple
>  AC compressor.  I've been taking some performance
>  measurements, e.g. with Tout = 45 deg, it takes the
>  heatpump about 1 hour to raise the house temp by 2
>  degrees.  It consumes 5kW, so that's 2.5kWh/deg.
>  Whoa, we'll be using far more electricity than our
>  roof makes!  The default outside-temp breakpoint
>  for switching to the oil burner is 40 degrees.
>  I'm studying the thermostat manual's installation
>  instructions to change to 50 degrees.  They claim
>  heatpump heating is cheaper than oil, but I doubt
>  it!  Anybody have experience with a hybrid system?
>
>

don't worry too much - the waste energy turn into heat too

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10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-07 11:16 -0700
  Re: 10 mega-watt hours Jon Elson <jmelson@wustl.edu> - 2016-10-07 14:13 -0500
    Re: 10 mega-watt hours Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-10-07 12:41 -0700
      Re: 10 mega-watt hours makolber@yahoo.com - 2016-10-07 13:08 -0700
        Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-07 14:27 -0700
      Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-07 14:09 -0700
        Re: 10 mega-watt hours Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-10-07 14:18 -0700
          Re: 10 mega-watt hours Ralph Barone <ralph@invalid.com> - 2016-10-07 22:40 +0000
            Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-07 16:42 -0700
              Re: 10 mega-watt hours Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-10-07 17:35 -0700
                Re: 10 mega-watt hours Jeff Liebermann <jeffl@cruzio.com> - 2016-10-08 09:09 -0700
                Re: 10 mega-watt hours John Larkin <jjlarkin@highlandtechnology.com> - 2016-10-08 09:53 -0700
                Re: 10 mega-watt hours Jeff Liebermann <jeffl@cruzio.com> - 2016-10-08 11:10 -0700
                Re: 10 mega-watt hours Bob Engelhardt <BobEngelhardt@comcast.net> - 2016-10-09 12:30 -0400
                Re: 10 mega-watt hours Jeff Liebermann <jeffl@cruzio.com> - 2016-10-09 10:26 -0700
                Re: 10 mega-watt hours Ralph Barone <ralph@invalid.com> - 2016-10-08 23:38 +0000
                Re: 10 mega-watt hours Jeff Liebermann <jeffl@cruzio.com> - 2016-10-08 18:13 -0700
                Re: 10 mega-watt hours Ralph Barone <ralph@invalid.com> - 2016-10-09 05:02 +0000
                Re: 10 mega-watt hours Jeff Liebermann <jeffl@cruzio.com> - 2016-10-08 23:29 -0700
          Re: 10 mega-watt hours Chris Jones <lugnut808@spam.yahoo.com> - 2016-10-09 11:42 +1100
  Re: 10 mega-watt hours Martin Riddle <martin_ridd@verizon.net> - 2016-10-07 17:30 -0400
    Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-07 17:14 -0700
      Re: 10 mega-watt hours Jon Elson <elson@pico-systems.com> - 2016-10-11 10:28 -0500
        heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-12 05:57 -0700
          Re: heatpump vs furnace bill.sloman@ieee.org - 2016-10-12 07:33 -0700
            Re: heatpump vs furnace "dcaster@krl.org" <dcaster@krl.org> - 2016-10-12 17:41 -0700
              Re: heatpump vs furnace bill.sloman@ieee.org - 2016-10-12 18:26 -0700
                Re: heatpump vs furnace "dcaster@krl.org" <dcaster@krl.org> - 2016-10-13 06:45 -0700
              Re: heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-12 18:57 -0700
                Re: heatpump vs furnace bill.sloman@ieee.org - 2016-10-12 22:36 -0700
                Re: heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-13 03:57 -0700
          Re: heatpump vs furnace Ecnerwal <MyNameForward@ReplaceWithMyVices.Com.invalid> - 2016-10-12 10:33 -0400
            Re: heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-12 09:46 -0700
              Re: heatpump vs furnace Ecnerwal <MyNameForward@ReplaceWithMyVices.Com.invalid> - 2016-10-12 14:39 -0400
          Re: heatpump vs furnace Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> - 2016-10-12 08:10 -0700
            Re: heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-12 09:39 -0700
          Re: heatpump vs furnace makolber@yahoo.com - 2016-10-12 13:02 -0700
            Re: heatpump vs furnace Winfield Hill <hill@rowland.harvard.edu> - 2016-10-13 06:10 -0700
          Re: heatpump vs furnace "David Eather" <eather@tpg.com.au> - 2016-10-15 14:47 +1000
            Re: heatpump vs furnace krw <krw@nowhere.com> - 2016-10-15 10:56 -0400
              Re: heatpump vs furnace "David Eather" <eather@tpg.com.au> - 2016-10-17 12:47 +1000
                Re: heatpump vs furnace krw <krw@nowhere.com> - 2016-10-17 19:50 -0400
  Re: 10 mega-watt hours sean.c4s.vn@gmail.com - 2016-10-12 06:13 -0700
  Re: 10 mega-watt hours Yzordderrex <powersupplyguy@netzero.net> - 2016-10-13 07:52 -0700
    Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-13 08:09 -0700
      Re: 10 mega-watt hours Yzordderrex <powersupplyguy@netzero.net> - 2016-10-14 03:05 -0700
        Re: 10 mega-watt hours Winfield Hill <hill@rowland.harvard.edu> - 2016-10-14 05:52 -0700

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