Improving the efficiency of your gas heating system.

Other author United States. Department of Energy. Office of Building Technologies.
Format Book
Publication InfoWashington, D.C. : U.S. Dept. of Energy, Assistant Secretary of Conservation and Renewable Energy, Office of Building Technologies, [1991]
Description12 pages : illustrations ; 22 cm
Subjects
Heating--Equipment and supplies.
Gas-burners.
Furnaces--Efficiency.

General noteShipping list no.: 91-0600-P.
General note"March 1991."
GPO item number0429-H-4
Govt. docs number E 1.89:0338 P