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Old 07-24-2013, 05:50 PM   #16
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4t sounds big for that size dwelling but you should definitely do some sort of heat gain calc. One thing about getting a possibly oversize unit like that would be the ducts... if they are sized for a smaller unit (what size furnace do you have?) the blower that would be needed for a 4t a/c (~1600cfm) could be very noisy and create high static pressure.


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Old 07-24-2013, 07:14 PM   #17
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I put in a Ducane heat pump,1.5 ton /10 k.w. electric heat. 410 -a seer13. Freezes us.out all summer.
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Old 07-24-2013, 07:24 PM   #18
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we have installed,,amana,tempstar, heil,goodman, concord,armstrong air, bryant, trane, lennox,york,luxair,to name a few....over the yrs thay all have performed well for their cost and intended purpose...some maybe alittle better than the other.... but install has everything to do with operation ..... make sure your contractor does a load cal and not just rule of thumb estimate ..ben sr
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Old 07-29-2013, 12:49 PM   #19
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I have an update.. had another guy come through, with a totally different approach.

Perhaps I should have mentioned this earlier, but the house is a bi-level.

That being said, this chap prefers to leave the old HVnoAC alone and add an AC system to the attic. He would then add ducting to the kitchen/dining/bedrooms/bathrooms if I want to. The downside to this is, the two bedrooms would have no AC unless I run a duct through an upstairs wall, and the main area would rely on the cold air falling down the stairway.

Now. This makes sense. I fight the "basement"/downstairs for heat in the winter as it is, it's always cold. Even now in the heat, It's almost 10 deg cooler down there.

He has not come back with a price, but he hinted at 8, then 9, then 10K for a decent setup. We talked about a furnace swap as well, since he might be able to get a package deal on the 3 parts. He did say that I would only need a 3.5 ton unit with a attic mount and the newish windows that are there.

Suddenly I wonder if the over the phone quote I got was for a similar setup.
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Old 07-29-2013, 04:16 PM   #20
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Shouldn't even need a 3.5 ton.
When posting in certain forums, knowing your location will help others give better feedback/advice/solutions to your questions.
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Old 07-29-2013, 05:03 PM   #21
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Anybody that gives me a quote for a furnace and AC over the phone, or gives me a written quote that does not state what brand and model, well he won't be doing any work for me. I will not do business with people like that.
The outfit that I bought my last furnace from, they handled Lennox. They gave me 3 quotes (good, better, best) and all the literature and specifications on each so I could make an intelligent decision.
I think you need a couple more quotes.


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