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Type: Posts; User: lzerarc

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    my local utility company who has a very large...

    my local utility company who has a very large focus on energy efficiency and has several great programs sent me this very detailed spread sheet. basically I can input the equiptment SEER numbers,...
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    I believe code requires 5/8" on the attic. If...

    I believe code requires 5/8" on the attic. If not, definately do 5/8" regardless. Even an r-28 could have a sag or possibly screw pops.
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    what were your reasons for switching from a HP? ...

    what were your reasons for switching from a HP? I am guessing your backup was too expensive for the climate? However I would think propane would be pretty pricey as well?
    Propane would be my gas...
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    HVAC design for super tight, efficient house

    I design buildings to be efficient, but I have really no idea on HVAC items to match them. I believe putting the money into your shell first, then hvac to fit the needs.
    Here is some back ground:...
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    I just ran a new and pretty accurate heat gain...

    I just ran a new and pretty accurate heat gain for the house and the windows on each wall, including the basement conditioning. Came out to be 22,600 BTU requirement. This is asusming my air...
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    how does a system like you described compare...

    how does a system like you described compare price ways, installed, to a "typical" system (for example HP/air handler/heating coil)
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    HP from Lennox, trane, etc typically lose...

    HP from Lennox, trane, etc typically lose performance and can not heat much below 35* in our area, which can be several months of the year. So we need either a furnace or other electric heat to make...
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    I was looking at that very unit last night. Our...

    I was looking at that very unit last night. Our design temp is around -7. It states at -5 its still at 90% capacity.
    My only reservation would be how far it can push air. Everywhere I read it...
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    north east iowa

    north east iowa
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    they are really more of a visual thing than...

    they are really more of a visual thing than anything. However I do see they have the ducted versions that can be installed in the basement for example. One thing I am not sure of is how the HP...
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    designing for a super insulated, solar house

    The problem I am running into with my new house design is the hvac design. I am not trusting any of the people I am working with to design it correctly. It is a true direct gain passive solar...
  12. what type of wall construction are they using? ...

    what type of wall construction are they using? 2x4 or 2x6? If it is 2x6, and R15 insulation is still not very good. I would suggest focus on the shell first before playing with HVAC numbers. This...
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    The HP options are 2 ton, by all people....

    The HP options are 2 ton, by all people. Oversizing allows for slightly more efficient heating at lower temps I am told. The AC option from Trane is 1.5T. Our current old AC SEER 6 is a 1.5 ton and...
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    The HP added about $450 I believe. The Trane...

    The HP added about $450 I believe.

    The Trane filter is the Perfect Fit Media filter (not the electronic one)

    Also, both the Trane AC are 1.5 tons. Trane did the heat calcs and the work...the...
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    bc the much higher efficient HP would heat...

    bc the much higher efficient HP would heat between 35-interior temp, say 72, and the furnace is only heating from whatever the exterior temp is, say 0 to 35 instead of 0-72.
    At least this is how it...
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    Sorry, I can edit and remove prices if need be. ...

    Sorry, I can edit and remove prices if need be.

    Problem is, as stated in my posts, we will only be in this house for a few years. Probably 2-5 years at most. I am sure we will see payback within...
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    thanks for the reply. I have been able to...

    thanks for the reply. I have been able to basically eliminate 2 of the people, just because of the vibe I get from them. One guy did not seem to care if I bought from them or not. I showed im a...
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    Cedar Falls/Waterloo area

    Cedar Falls/Waterloo area
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    Well the AC is rated at 16 SEER for the 1.5 tons....

    Well the AC is rated at 16 SEER for the 1.5 tons. The single stange HP, which was $400 additional, is 14 SEER I believe (maybe 15). The energy company gives an additional $75 back in rebates,...
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    tried searching....HP vs AC for Iowa?

    been trying to search, read, search, etc. I am getting a lot of mixed reviews, but then again, nothing is really pertaining to my area.

    We are getting quotes for a new furnace/ac/hp install. I...
  21. does anyone know if the 3 years 0% has to be...

    does anyone know if the 3 years 0% has to be applied for with the dealer? We applied last night at got $12,000 approval, however the terms states 24.99%!!!! This is through Wells Fargo. We applied...
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