120-volt heater Do not wire a 120-volt heater to a 240-volt circuit. The heater will try to deliver four times its rated wattage, causing it to overheat. This will permanently damage the heating element and also void the product warranty. 240-volt heater We do not recommend wiring a 240-volt heater to a 120-volt circuit. The heater will be underpowered and will only receive 25% of the wattage it was designed to deliver.
Product Selection
How to size the heater circuit?
Information and Tips on how to size the heater circuit can be found by clicking HERE
Are King heaters actually made in Seattle, Washington?
Yes. Since 1958 we have made quality residential, commercial and industrial heating products in the same location.
Will my electric bill be lower if I use 120 volt heaters?
No. Same size 120 volt and 240 volt heaters will use the same amount of power, measured in watts or kilowatts. Your electric company charges by kilowatt hours.
How do I calculate BTU
BTUs measure energy and watts measure power. A single watt converts to approximately 3.412 BTUs per hour. Simply multiple the total watts x 3.412 to calculate BTUs per hour. For example: 1000 Watt Heater x 3.412 = 3,412 BTUs per hour.