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- Check air ducts
- Check for excessive snow on roof
- Clean furnace filter and heat recovery ventilator (HRV)
- Clean humidifier
- Check and reset ground fault circuit interrupter (GFCI)
- Test smoke alarms and carbon monoxide detectors
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- Clean furnace filter and HRV
- Check furnace fan belt
- Check water heater
- Check exhaust fans
- Clean humidifier
- Remove snow and ice from roof overhang/vents
- Check and reset GFCI
- Test smoke alarms and carbon monoxide detectors
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- Clean furnace filter and HRV
- Check inside surfaces
- Remove snow and ice from roof overhang/vents
- Check and reset GFCI
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