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  1. #1
    Join Date
    Sep 2007
    Posts
    4

    Two story Two furnaces What temp?

    I just bought a two story house and have two heaters one up, one down. No one sleeps upstairs, So it really isn't that important to keep it as warm at the down stairs.

    Typical day Upstairs set at 66 deg and reads 71
    Down stairs st at 69 deg and reads 69

    How do you equalize the temp in the house or atleast keep the right balence so one heater isn't working all the time?

  2. #2
    Join Date
    Nov 2005
    Location
    Haymarket VA
    Posts
    642
    where heat goes ? up

  3. #3
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    34,299
    guess they better start sleeping upstairs! Or put a big door at the top of the steps!

  4. #4
    Join Date
    Nov 2000
    Location
    Memphis TN USA
    Posts
    6,945
    What is the problem with one furnace doing all the work, if it can keep the house warm?
    If the superheat ain't right it ain't charged right.

  5. #5
    Join Date
    Jul 2004
    Location
    Massachusetts
    Posts
    6,837
    You have a two zone system, using equipment as the zone controls. The purpose of a two zone system is to give even temperatures, upstairs and down, summer and winter (if there's AC attached). What you're trying to do is to create two DIFFERENT thermal zones within the treated envelope. Unless you have insulation between the first and second floors and unless you have weather tight doors between the first and second floors, your ability to have a cooler temperature upstairs is not very likely. Heat rises and so by turning down the upstairs t-stat, the heat from downstairs just floods to the second floor and the first floor furnace does the job. That is, until the outdoor ambient gets down and dirty. When the OAT drops down into the teens or colder, it's likely the first floor furnace will be unable to heat the place and the second floor unit will run too. But having the second floor cooler than the first will likely upset your comfort on the first floor as that furnace tries but fails to heat the entire home. Again, two zones are there to give EVEN temperatures throughout the home, both first and second floors, not different temperatures. The house simply isn't designed for that.

    The obvious question is, why do you have so much house if you don't use it?
    If YOU want change, YOU have to first change.

    If you are waiting for the 'other guy' to change first, just remember, you're the 'other guy's' other guy. To continue to expect real change when you keep acting the same way as always, is folly. Won't happen. Real change will only happen when a majority of the people change the way they vote!

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