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  1. #14
    Join Date
    Jan 2014
    Location
    New England
    Posts
    4,129
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    Why are you limiting yourself to choosing Lennox, not that there is anything wrong with Lennox. I'm sure other brands have different furnace BTU ratings than Lennox.

  2. #15
    Join Date
    Feb 2011
    Location
    New Jersey
    Posts
    217
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    Thread Starter
    Its a finished basement all 4 walls and ceiling. There are already ducts going into basement.

    I just now completed the area calculations:
    Basement: 600 sq ft
    1st floor: 615 sq ft.
    Total: 1215 sq ft.

    Question: i can run 1 or 2 portable heaters in basement as needed. Why I should not use basement for calculations?

    The (this site based) HVAC consultant just came. He said unless I sign contract he cant share his load calculation values but his recommendation is to have a small heat pump for basement ONLY. The entire 3 1st floor rooms use Mitsubishi / other mini split units. But overall cost is much higher that Costco.

  3. #16
    Join Date
    Feb 2011
    Location
    New Jersey
    Posts
    217
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    Thread Starter
    Thank you. I will get estimates again on Monday and they use other manufacturers. These 2 hvac guys use Lennox and wanted to get based off that and keep things simple.

  4. #17
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    17,051
    Post Likes
    Basements are surrounded by earth. Great insulation. Floor level your fighting 55*F soil not 89 or 90* air. Due to the cooler temperatures you’ll have moisture issues and will use heat more then cooling.

    With the small Sq Ft #’s look into a small Mini split for the 1st fl and another for the basement.

  5. #18
    Join Date
    Feb 2011
    Location
    New Jersey
    Posts
    217
    Post Likes
    Thread Starter
    Ha. Upon questioning them: Both the Lennox installers came back with same unit SLV280V, Signature series. They said being variable this version will be 43,000 at low and 70,000 max and that will be more than adequate. It will run most of the time at low and thus at 43,000 BTU.

    I am seriously thinking just taking the furnace. AC will only be required for just upstairs 3 rooms one of which is a bedroom. Maybe later (2019 summer) put a window AC for the bedroom.

    Splits are actually coming out to be very costly. 3 aplit systems: 1 for basement and 2 servicing the upstairs 3 rooms.

  6. #19
    Join Date
    Nov 2006
    Location
    Athens, Ohio
    Posts
    5,619
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    Quote Originally Posted by wisepole View Post
    Kdean: there are 2 sides to this. Independent contractors: in my townhome i used one, found thru there the AOP locator map. But guess what? When went belly up. Now, i have a 12,000 worth of instrument which i fear when fails I will have a nightmare.

    What matters is not big box store but the installation company they are using.
    Are you saying that no other contractor will work on your system? I don't know why that would be so. Most of us work on lots of different brands and models.
    AOP Rules: Rules For Equipment Owners.

    Free online load calculator: http://www.loadcalc.net/


    There = not here. Their = possessive pronoun. They're = they are
    It's = contraction of it is. Its = the possessive form of it
    Too = also. To = expressing motion. Two = 2
    Then = after that, next. Than = indicates a comparison.
    Questions should end with a question mark "?" Statements end with a period "."

  7. #20
    Join Date
    Jan 2014
    Location
    New England
    Posts
    4,129
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    Portable A/C unit on wheels may be another option to window units, not terribly expense either. Easier to install/remove vent kit than window unit IMO

  8. #21
    Join Date
    Feb 2011
    Location
    New Jersey
    Posts
    217
    Post Likes
    Thread Starter
    KDean: no no no. The others are coming on Monday. They work with other brands. These 3 work exclusively with Lennox and Carrier only. I categorically said no to Carrier due to personal reasons.

  9. #22
    Join Date
    Aug 2002
    Location
    Southold, NY
    Posts
    17,051
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    Quote Originally Posted by wisepole View Post
    KDean: no no no. The others are coming on Monday. They work with other brands. These 3 work exclusively with Lennox and Carrier only. I categorically said no to Carrier due to personal reasons.
    I’ll agree with the Carrier comment to a point!

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