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Posted by Bubba on August 20, 2006, 5:08 pm
wrote:
>Thanks.
>I'm checking this out now.
>
>And thanks for all the other comments. I figured I was on the hook for
>one board but not both. I'm extra confident in that idea now.
>
You're on the hook for ONE board only AFTER they install one that
doesnt burn up. Id be checking elsewhere.
Bubba
>
>tech wrote:
>> HVAC-Talk . com
>>
>> They love to answer questions like this!
>>
>>
>> > Hello,
>> >
>> > I have a 11 year old Goodman gas furnace (model gmp125-5) with a 3 ton
>> > central air unit (southern Pennsylvania).
>> > The a/c quit working a few weeks ago. I had a serviceman come out and
>> > he said the control board had burn spots on it. He put in a new
>> > control board, turned on the system, it ran for about 1 minute and then
>> > burnt up the replacement board.
>> > I was told that the thermostat (basic round dial one) could be causing
>> > a short so I put in a digital programmable thermostat. They put in a
>> > second control board. The tech was going to turn on the a/c again and
>> > I said let's just turn the blower fan from auto to on first and see how
>> > that works. We did that and the control board burnt out again after
>> > 1/2 minute or so. He tested the wires from the thermostat to the
>> > control board and there was no short in them.
>> >
>> > The control boards are $170 each and my repair bill so far is close to
>> > $500. I've called several hvac shops in the area and the general
>> > concensus is that troubleshooting a short in the system could be quite
>> > costly and considering the system is 11 years old, it would be better
>> > to replace it.
>> > Thoughts/Comments?
>> >
>> > My second question is this: How much should it cost (ballpark) for a
>> > new natural gas furnace and central air system? My house is ~2600 sq
>> > ft, 2 floors. I had an Amana supplier come out and do a engineering
>> > analysis. She said the 3 ton a/c unit is too small for my house and
>> > that I should have a 4 ton unit.
>> > She gave me quotes on new systems and I'm in shock at the price quotes,
>> > which range from $6500 for a system with the cheapest parts (13 seer
>> > a/c with 5 yr compressor warranty, 80% gas furnace) all the way to
>> > $11,000 for a 16 seer a/c with lifetime compressor/10 yr parts and a
>> > 96% gas furnace with variable speed blower and lifetime heat exchanger.
>> >
>> > I was hoping I could get a efficient system for $5000-$6000 installed.
>> > Are the high-efficiency furnace and a/c units really that much more
>> > expensive and/or more involved to install - or is this place charging a
>> > premium to install the high-end components?
>> >
>> > Thanks ahead of time for any guidance you can offer!!!
>> >
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