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  1. I am pretty familiar with that scenario. I had to...

    I am pretty familiar with that scenario. I had to replace the prior furnace's thermal heat switch. I do not believe that is occurring on this unit.



    As I mentioned in a prior response, I am...
  2. Unfortunately I had just purchased a Honeywell...

    Unfortunately I had just purchased a Honeywell thermostat. It is NOT a 2 stager and yes installer "crippled" the board so the 2 stage is set by a timer. Amazon for the next 45min has a sale on a...
  3. Thank you Heaterman and Firecontrol for the...

    Thank you Heaterman and Firecontrol for the replies

    re: Manual J - A simple heat load calc was 80K BTU output. (NJ, 2 sty, 2500sq ft w/nominal insulation. Also many windows are still single-pane)....
  4. Square peg in a round hole - Return grill CFM electronic filter sizing question

    Background:
    Recently replaced a 40yo 120k BTU gas furnace w/Coleman TM9V100C20MP11 (Specs: 95% w/2 stage vari speed ECM 2000 CFM).
    The prior blower (which had been upgraded) is not as powerful as...
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