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  1. #1
    Join Date
    Oct 2011
    Posts
    9

    New furnace install questions

    Hi,

    I am about to replace my old furnace and it seems that I will go with a G61MPV-36B-071. The offer includes a Honeywell 6000 and 10 yr Parts/5 yr Labor warranty. The contractor told me that the fan will have to run all the time on a lower setting.

    I live in Vancouver Canada, mild climate and my house is ~2200 sq ft, 2 stories, finished basement. Basement is usually cooler.

    My questions:
    1. Is the G61MPV + Honeywell 6000 thermostat the right combination? Is this thermostat compatible wtih 2 stage furnace?
    2. Is the G61MPV-36B-071 (66000 BTU) enough for my house? Another contractor suggested American Standard Freedom 95 Premium Input 90000BTU Output 72000 BTU. This one didn't provide the full model of the furnace and there is a big size difference comparing with the other one. What do you think would be the proper size? None of the contractors did an advanced load calculation.
    3. Is it normal to run the fan continuously, as the contractor recommended?
    4. Does Lennox warranty require an annual tune-up to keep the warranty valid? I searched their website and did not find this requirement.

    Thanks

  2. #2
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,785
    If you also have central A/C, i would want a better thermostat. An IAQ stat, that can slow the blower.
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  3. #3
    Join Date
    Dec 2009
    Location
    Roswell, Georgia
    Posts
    424
    Quote Originally Posted by beenthere View Post
    If you also have central A/C, i would want a better thermostat. An IAQ stat, that can slow the blower.
    In Canada? I wouldn't spring for that. Doubt humidity control is much of an issue.

  4. #4
    Join Date
    Jan 2004
    Location
    PA
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    68,785
    Quote Originally Posted by bhahvac View Post
    In Canada? I wouldn't spring for that. Doubt humidity control is much of an issue.
    I don't know what his humidity is like during the milder parts of the cooling season, if he needs A/C. I think HRVs/ERVs are common in his area.
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  5. #5
    Join Date
    Aug 2011
    Location
    Eastern Shore, MD
    Posts
    799
    annual maintenance is a requirement on all manufacturers to keep your warranty valid....same as a car...dont get the oil changed in a new car and it voids your warranty

  6. #6
    Join Date
    Oct 2011
    Posts
    9
    Quote Originally Posted by beenthere View Post
    If you also have central A/C, i would want a better thermostat. An IAQ stat, that can slow the blower.
    No, I don't have a central A/C

  7. #7
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,765
    any 2 stage thermostat will work fine with that furnace.

    don't know why they would want you to run the fan constantly??

    Lennox requires that the system be properly maintained but in over 30 years as a Lennox dealer they have never required proof of annual service.

  8. #8
    Join Date
    Oct 2011
    Posts
    9
    Quote Originally Posted by t527ed View Post
    any 2 stage thermostat will work fine with that furnace.

    don't know why they would want you to run the fan constantly??

    Lennox requires that the system be properly maintained but in over 30 years as a Lennox dealer they have never required proof of annual service.
    I just spoke with my contractor and he said the same thing about the warranty. He said there is not much to service to this new units ...

    Clarified why I need to run the fan constantly: this is what is recommended for a better air circulation.

    The company is for over 35 years in business (BBB A+), so hopefully they will do a good job.

    Thanks.

  9. #9
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,765
    what type of air filter is he putting in? with fan running all the time i would strongly recommend a merv 10 media filter to protect that nice expensive furnace.

  10. #10
    Join Date
    Oct 2011
    Posts
    9
    doesn't specify what type, just 1" filter & frame, I will have to check

  11. #11
    Join Date
    Feb 2009
    Location
    Portland OR
    Posts
    2,030
    Quote Originally Posted by lcuc View Post
    doesn't specify what type, just 1" filter & frame, I will have to check
    A MERV 10 is typically going to be a 4" filter cabinet like a Honeywell F100 or Lennox HC10
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  12. #12
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,765
    Quote Originally Posted by lcuc View Post
    doesn't specify what type, just 1" filter & frame, I will have to check
    if there is room for it find out about upgrading to the HC-10 filter cabinet, your furnace will thank you.

  13. #13
    Join Date
    Oct 2011
    Posts
    9
    I will try, thank you for the info.

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