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Q & A: Would a 3 ton HVAC unit work efficiently in a 1400 square foot home? I need to replace the heat/ac.?

Question by Ronnie: Would a 3 ton HVAC unit work efficiently in a 1400 square foot home? I need to replace the heat/ac.?
Contractor thinks I should go with 3 1/2 or 4 ton. It is a frame home about 55 years old. The old ac condenser is a 3 ton but does not match the heating unit.

Best answer:

Answer by handyclown
not good enough i have a 5 ton a loy better works less

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5 Responses to Q & A: Would a 3 ton HVAC unit work efficiently in a 1400 square foot home? I need to replace the heat/ac.?

  1. HKCS

    I have read one website about HVAC.They have described very well.If you read this site you will get a solution.
    Click here http://hvacbestbuy.com

  2. mobildik

    More information is necessary. A HVAC contractor should perform a ‘heat/cooling’ analysis to determine the proper size of furnace and a/c.
    Generaly speaking a 1400 sq ft house does not require a 3 or 3 1/2 ton a/c. Count the heat supplies in the house. If you have 6″ ducts figure 4 heat supplies per ton oc a/c. Example: 10 supplies could mean either a 2 or 2 1/2 ton unit. If you OVERSIZE the a/c it will not dehumidify the house and not provide adequate cooling. If you undersize it, the unit will run and run and run and only cost you $ $ $ in electrical fees.
    Are you using a certified HVAC comany ofr contractor or just a general congtractor. Stick with an established HVAC company. What size furnace (in BTU’s?)

  3. Wanderer

    Have you solicited a second survey; did the contractor give you reasoning why the upgrade? Get both. A house that size could well go to 4, but my question will the furnace be up to the upgrade? If either are over about 15 years old – replace the both at the same time, I know it is expensive – but it is one of those pay me now or pay me later deals. Get your ducts examined, if they are the originals…wow, you will definitely want to upgrade. You mention the age of the house as about 55, have you got good insulation and caulking to keep out unwanted drafts which will defeat your system? I am in favor of going for the second or third opinion and think compatability and age of the system. Good luck.

  4. gizmoe

    Too little information to be sure.
    A heat loss/gain would need to be done by a qualified person.
    Depends where you live and factors about the home.

  5. tzweeb

    you need an a/c unit that matches the air flow of your furnace. a larger unit will still cool but wont work properly unless it has enough air flow to circulate the heat from your home into the coils. get a second opinion and more estimates to make sure you are not paying for something you dont need.
    you might have to replace the furnace at the same time to get a matching system that will work properly.

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