House Type |
1,600 square-foot,
2 story house with an unfinished basement. |
Ceiling |
R-38 Insulation |
Walls |
R-19 Insulation |
Foundation
Walls |
R-13 Insulation
full 8" height on foundation wall. |
Windows |
Greater than
R-2.7 overall, such as dbl pane vinyl with "low E"
coating. |
Air Leakage |
.5 (or lower)
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 and all vents and outside combustion
air ducted in for space and water heating appliances,
fireplaces, and wood stoves. |
House Ventilation |
Exhaust only
system with low wattage bath fan on a 24 hour timer or
a heat recovery ventilator (HVR). |
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
fired tank with an energy factor of at least .62 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;
first 10 feet of hot and cold water pipes off of tank
insulated with closed-cell foam pipe insulation. |
Space Heating |
87% AFUE "sealed
combustion" or "power vented" low mass
(less than 4 gal. boiler, or a "sealed combustion"
or "power vented" gas furnace with AFUE of 90%
or higher, or an effective electrical ground source heat
pump. |
Distribution |
Furnace ducts
in unheated basement sealed with mastic and insulated
to R-5. |
Lighting |
50% hard-wired
fluorescent lighting fixtures in high use areas. |
Devices |
Automatic set-back
thermostat on each heating zone; zoning in house with
boiler. |
Refrigerator |
Energy efficient
refrigerator. |
