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  • paulmars's Avatar
    Today, 06:18 PM
    I just bought a new thermostat for my central oil HVAC unit. Honeywell TH4110D. I can set it for oil heater <90% efficiency or >90% efficiency. I'm...
    0 replies | 5 view(s)
  • paulmars's Avatar
    Today, 04:30 PM
    paulmars replied to a thread manometer accuracy in HVAC
    great tip. that would be more accurate. I asked dwyer and they just suggested their 400$ digital high range unit that was not any more accurate. I...
    2 replies | 72 view(s)
  • paulmars's Avatar
    02-12-2018, 11:24 PM
    paulmars started a thread manometer accuracy in HVAC
    What is a good reasonable priced accurate manometer to measure my barometric damper? My furnace should be 0.025 and my flue should be -0.02....
    2 replies | 72 view(s)
  • paulmars's Avatar
    02-09-2018, 06:02 PM
    paulmars started a thread fifth wire in HVAC
    My HVAC thermostat is 4 wire system W,R,Y,G. I just bought a new thermostat that uses 5 wires, w/extra Common connection. I was considering running a...
    1 replies | 67 view(s)
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