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  1. #1
    Join Date
    Oct 2005
    Location
    Omaha, NE
    Posts
    309

    Advice needed: Most reliable 80% eff Furnace

    I know this topic has been discussed a million times here, but the more I read the more confused I am!

    My needs are simple: 80% eff and reliability.

    1. 80% efficiency
    (Too complex to explain but I want 80% eff furnaces)

    2. Reliability
    (Yes, I want a reliable furnace; not 5-6 service calls per winter!)

    - The Lennox G40 or G50 seems OK but reading this forum, it seems like people have problems with it?
    http://www.lennox.com/products/overview.asp?model=G50

    - Carrier 80% seems OK too? But which model?
    http://www.residential.carrier.com/p...as/index.shtml

    - Goodman GMS8 Series 80% seems to be the most used in this forum:
    http://www.goodmanmfg.com/Portals/0/pdf/CB-GMS8.pdf

    So, please help! I need feedback (good or bad) from homeowners and pros, what 80% eff units they have and the pros and cons.

    Yes, the furnaces will be installed by HVAC contractors but I need feedback from people.

    TIA
    ------
    Two-Story Home + Basement
    Furnace A: 1991 Tempstar 80% eff 120K BTU (1st floor and basement)
    Furnace B: 1991 Tempstar 80% eff 80 BTU (2nd floor)

  2. #2
    Join Date
    Mar 2009
    Location
    los banos CA
    Posts
    17
    i would go with goodman it will last and it also has a more plesent price tag. plus they have a few differ sizes in 80% so garage attic or closet you have a choice. also i ve found that if you do have an issue they are realy good about tech support and returning phone calls.

  3. #3
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,829
    The one that's installed correctly, will be the most reliable.

  4. #4
    Join Date
    Mar 2009
    Location
    los banos CA
    Posts
    17
    as homeowner and mom money matters alot for me this would be my choice as a senior tech this would also be my choice if price is not an issue go with a trane.

  5. #5
    Join Date
    Mar 2009
    Location
    los banos CA
    Posts
    17
    install is a huge part of good operation so true

  6. #6
    Join Date
    Oct 2005
    Location
    Omaha, NE
    Posts
    309
    Quote Originally Posted by the dangling wrangler View Post
    The one that's installed correctly, will be the most reliable.
    Could you help me with the checklist for good install so I can go over this with my HVAC people to be sure they do a good job?

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    66,750
    You might want to use This to help choose a contractor.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,829
    Quote Originally Posted by cn View Post
    Could you help me with the checklist for good install so I can go over this with my HVAC people to be sure they do a good job?
    I'd say, use what beenthere said. My checklist will differ from someone elses. And the beat goes on.

  9. #9
    Join Date
    Oct 2005
    Location
    Omaha, NE
    Posts
    309
    Thanks,

    My Tempstar furnace during the last 18 years of operation, other than annual service by HVAC company, the only thing that was ever changed was the Ignition Module (? spelling) according previous owner's maintenance records!

    Part of me wanting to use Tempstar again because this unit runs well for 18 years straight!

    So, I do need recommendation re brand (Lennox vs Carrier vs Goodman vs Tempstar) and model number please!

  10. #10
    Join Date
    Mar 2005
    Location
    Houston, Texas
    Posts
    11,829
    Quote Originally Posted by cn View Post
    Thanks,

    My Tempstar furnace during the last 18 years of operation, other than annual service by HVAC company, the only thing that was ever changed was the Ignition Module (? spelling) according previous owner's maintenance records!

    Part of me wanting to use Tempstar again because this unit runs well for 18 years straight!

    So, I do need recommendation re brand (Lennox vs Carrier vs Goodman vs Tempstar) and model number please!

    Once again, it's all in the install.

  11. #11
    Join Date
    Jul 2008
    Posts
    551
    IMO, I wouldn't get an 80% furnace that didn't have a variable speed blower. All the manufacturers you listed make one. It will be a slight price bump but you'll save electricity during both heating and cooling seasons and it will be quieter assuming properly sized ductwork.

  12. #12
    Join Date
    Feb 2004
    Location
    chicago suburbs
    Posts
    4,422
    if you have had good luck with Tempstar why change?

  13. #13
    Join Date
    Aug 2008
    Location
    Booneville, Mississippi, United States
    Posts
    255

    go Tempstar

    T8MPN model, works great!!

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