 1. Know Your Voltage - 120 volt or 240 volt. • Check Circuit Breaker Single Pole is 120 volt; Double Pole is 240 volt • If replacing an old heater check the old heater label. 2. Know Your Wattage Step l: Select the column with age of your home. • Newer home - mostly 1980's to present R19 walls, R30 floors and ceilings, standard windows thermal pane, 8 ft ceilings • Older home-Prior to 1980 R11 watts, R19 ceilings, single pane windows, 9 ft ceilings Step 2: Select row with closest square footage for room you want to heat Step 3: GENERAL RULE OF THUMB This Selection Guide recommends approximately 6 watts per square foot for newer homes and 10 watts per square foot for older homes. If you live in a higher altitude/colder climate, we recommend adding 2 watts per square foot BTU's = Watts x 3.412 |
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