House
Type |
1,600
square foot, 2 story house with an unfinished basement. |
Ceiling |
R-38
Insulation (minimum). |
Walls |
R-13
Insulation (minimum). |
Foundation
Walls |
R-11
Insulation to at least 2 feet below grade. |
Windows |
Greater
than R-2 overall, such as dbl pane vinyl windows. |
Air
Leakage |
Less
than .5 average natural air changes per hour as verified
by a blower door test; fully weatherstripped; completely
caulked joints and cracks; sealed attic bypasses (i.e.
wiring and plumbing penetrations, attic hatch and area
around chimney all airtight); dampers on all vents; outside
combustion air ducted in for space and water heating appliances,
fireplace, and wood burning stoves. |
House
Ventilation |
Exhaust
only system with low wattage bath fan on a 24 hour timer
or a heat recovery ventilator (HRV). |
Solar
Gain |
At
least 50 square feet of south facing windows that are
unshaded in winter. |
Water
Heater |
"Sealed
combustion or "power vented" gas or oil fire
tank with an energy factor of at least .59 or indirect
fired hot water storage tank heated as a zone off of a
boiler; low flow (2.5 gpm or less) shower heads and faucets;
and first 10 feet of hot and cold water pipes off of tank
insulated with closed-cell foam pipe insulation. |
Space
Heating |
"Sealed
combustion" or "power vented" low mass
(less than 6 gal. water content) boiler; all ducts sealed
with mastic and R-5 insulated; or +80% AFUE forced-air-gas
furnace. |
Devices |
Standard
dial thermostat with zoned controls if more than two heating
units. |
Refrigerator |
Energy
efficient refrigerator. |
