HVAC and Insulation

Heating System, Insulation, and Weatherization​

  • Purchase energy efficient furnace. Get rebates. www.energystar.com.
  • Tune-up furnace and AC unit annually
  • Replace filters regularly. Note types of filters
  • ECM motor – variable speed
  • Install 24/7 thermostat
  • Set the thermostat for maximum savings and comfort.
Air flow
  • Clean ducts
  • Seal any leaks in the HVAC ducts.
  • Adjusting air flow flappers in ducts for maximum distribution of heat
  • Adjust room vents
DehumidifiersWater Heater
  • Put blanket around standard water heater.
  • Set temperature at moderate 104 degrees.
  • Install on-demand water heater


Secure the Building envelope
  • Attic At least 7 inches of insulation in the attic.
  • Walls Use infra-Red Thermometer or heat detector.
  • Windows.
  • High efficiency, double pane windows.
  • Outdoor storm windows or indoor storm windows
  • Honeycomb shades and/or thermal curtains.
  • Seal the windows.
  • Insulate the hot water pipes with thermal wraps.
  • Hot water tank blanket
  • Insulation along the rim joists
  • Fans. Overhead fans keep hot air down in the winter and cool where circulating.
  • Solar: for hot water, for electricity, and as an attic fan.
Testing and Assessment
  • Blower Test. Focus on Energy trade allies may do a blower test to expose leaks and drafts.
  • Insulation Assessments. Insulation companies give free assessments.  


Windows: Temporary solutions

  • Seal any cracks around windows.
  • Plastic shrink sheet over entire window area
  • Removable caulk
  • Tape or putty

Windows permanent solutions

  • Replace windows with double or triple panes
  • Use foam around windows

Doors Temporary

  • Use insulation strips around door
  • Rugs/ blankets. “snakes” at the bottom

Doors permanent

  • Sides with foam
  • Bottoms with door sweeps

Other openings to the outside

  • Fill in Electrical Outlets with pre-cut foam
  • Flap on dryer vents.
  • Fireplace: Flue dampers closed. Install temporary closures
  • Fill in gaps on outside faucets and other plumbing
  • Insulate attic door and traps
  • Other entryways (e.g. basement, cable source)