Boland Maloney specializes in replacement windows, replacement doors, decking, and lumber in Louisville, KY > Windows

Compare Energy Efficiency

Louisville, Kentucky

Look for the ENERGY STAR®	Recommended Window Properties
U-Factor = .40 or less SHGC = .55 or less	U-factor = .40 or less SHGC = .40 or less VT = .50 or more

Energy Cost: Natural Gas: $0.989/therm
Electricity: $0.055/kWh

Design Variations
Glazing Area
Shading
Orientation
Skylights

Kentucky Factsheet

Window Types

Properties

Annual Energy Use

Costs

Window 1
Single-glazed Clear
Aluminum

U = 1.25
SHGC = .76
VT = .74

H=	$1006
C=	$ 124
T=	$1130

Window 16
Double-glazed with Low-Solar-Gain Low-E
Aluminum with Thermal Break

U = .48
SHGC = .34
VT = .53

H=	$ 871
C=	$ 81
T=	$ 952

Window 19
Double-glazed Clear
Wood , Wood Clad , Vinyl or Hybrid/Composite

U = .49
SHGC = .56
VT = .58

H=	$ 811
C=	$ 106
T=	$ 917

Window 22
Double-glazed with High-Solar-Gain Low-E
Wood , Wood Clad , Vinyl or Hybrid/Composite

U = .36
SHGC = .52
VT = .53

H=	$ 769
C=	$ 102
T=	$ 871

Window 24
Double-glazed with Low-Solar-Gain Low-E
Wood , Wood Clad , Vinyl or Hybrid/Composite

U = .32
SHGC = .30
VT = .50

H=	$ 816
C=	$ 78
T=	$ 894

Window 33
Triple-glazed with Moderate-Solar-Gain Low-E
Insulated Vinyl or Fiberglass

U = .18
SHGC = .39
VT = .49

H=	$ 725
C=	$ 89
T=	$ 814

* Spectrally Selective

House Note: The annual energy performance figures shown here were generated using RESFEN for a typical (new or existing) 2000 sq. ft. house with 300 sq ft of window area (15% of floor area). The windows are equally distributed on all four sides of the house and include typical shading (interior shades, overhangs, trees and neighboring buildings). U-factor, SHGC, and VT are for the total window including frame. Energy use and savings between different window options will typically be higher for homes which are not as well insulated as typical new homes. The costs shown here are annual costs for space heating and space cooling only and thus will not correlate to utility bills. Costs for lights, appliances, hot water, cooking, and other uses are not included in these figures. The mechanical system uses a gas furnace for heating and air conditioning for cooling. These figures are based on typical energy costs for this region. Natural gas prices and electric prices are provided by the Energy Information Administration (www.eia.doe.gov).