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Type: Posts; User: batman71

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  1. Replies
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    With regard to natural gas vs. HP (ASHP or...

    With regard to natural gas vs. HP (ASHP or Geothermal) I offer the following....

    Assuming a 90% efficiency, a gas furnace will deliver a heat at a cost of about $ .97 per therm assuming a cost of...
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    Ted, I agree that intuition oftentimes has to...

    Ted, I agree that intuition oftentimes has to come into play in the decision, but intuition and emotion are two different things.

    You wrote..."Keep in mind, when you take GOOD models and compare...
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    I'll check on the warranty issue.... I've...

    I'll check on the warranty issue....

    I've already made the decision to use a variable frequency pump.
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    Ted accused me of being emotionally committed to...

    Ted accused me of being emotionally committed to geothermal. I am a Mech. Engr. (by training although I am not employed in the field). I also have been in sales for 30+ years. Anyone who has dealt...
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    Energy Star, I would be glad to send you copies...

    Energy Star, I would be glad to send you copies of the quotes on both the air-to-air (Carrier) and geothermal (Waterfurnace) systems. I stand by my earlier post that the two systems are comparable in...
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    I just sold a house with air-to-air HP/Propane...

    I just sold a house with air-to-air HP/Propane backup and although it was a fine system, I am uncomfortable with future costs of LP gas (too expensive and volatile) and electric is not much better....
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    In our neck of the woods, the water quality is...

    In our neck of the woods, the water quality is not an issue. Thre will be some hardness to deal with but the contractors have told me that cleaning the heat exchanger every year or so should be...
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    Motoguy128 wrote..."one might argue that you...

    Motoguy128 wrote..."one might argue that you haven't paid your fair share and simply deferred your obiligations onto later generations."

    There is no argument from me that, as a country, we have...
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    The well depth is 162 ft. and the water level is...

    The well depth is 162 ft. and the water level is at 55 ft. I used 75 ft. when referring to the head for pumping water.

    Admittedly, there are no guarantees with regard to the long term adequacy of...
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    Since I have to drill a well for domestic water...

    Since I have to drill a well for domestic water use anyway, the difference between a "pump-and-dump" and a closed loop system is about $6,000.. I can pump a helluva lot of well water for $6,000!
    ...
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    My original problem and perhaps the first...

    My original problem and perhaps the first priority based on what I am hearing here is that I need to get an accurate load calculation. I have figures from three contractors who have quoted the job...
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    Thanks to everyone for the feedback. I got...

    Thanks to everyone for the feedback.

    I got some additional details from one of the contractors and have an additional question.

    Contractor "B" calculated the heating/cooling loads at...
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    Point well taken. On the other hand, could it be...

    Point well taken. On the other hand, could it be that the installer proposing the 3 ton unit is doing so to get his quoted price down?

    Construction will be 2x6 walls with dense pack cellulose...
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    Equipment Sizing for Geothermal

    I recently solicited proposals for a geothermal system for my new home. I provided the house plans and other needed information so that both installers could run J calcualtions. There is nothing...
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    Thanks, 2nd Opinion....that makes sense to me !

    Thanks, 2nd Opinion....that makes sense to me !
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    The contractor who suggested the low returns...

    The contractor who suggested the low returns WOULD be runing them in the basement which is a conditioned space. The supply registers would be in the floor. His argument for placing the returns low is...
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    Location of Returns ?

    New home with 5 ton direct exchange geothermal, one story with walkout basement, approximately 2,200 sq ft 1st floor plus about 800 sq ft finished in lower level. HDD for our area 5,700 and CDD...
  18. Thanks, wyounger....

    I really appreciate the time you took to provide deatailed answers to all my questions. It's clear you know your stuff!
    One other thing...you mentioned the use of a "dedicated electric heater for...
  19. I have a new dual fuel system with a Carrier...

    I have a new dual fuel system with a Carrier 38YXA heat pump, 58CVA LP gas furnace and Infinity controls. I chose not to go with a more efficient furnace because I felt that the bulk of the heating...
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    I recently had installed a new dual fuel system...

    I recently had installed a new dual fuel system with a Carrier Infinity 80 gas furnace (58CVA) and a Performance 13 heat pump (38YXA) with Infinity control.
    On the Infinity control, the run time is...
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    I am replacing a dual fuel system that is 18...

    I am replacing a dual fuel system that is 18 years old...heat pump with LP gas backup. The home is also 18 years old with about 2650 sq. ft. of living space. I am in central Ohio.
    I have narrowed it...
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