An economical, general purpose freeze spray with a wide spray for cooling to test the functionality of the heater just spray on the test area of your heater to turn it on. To test the functionality of the heater just spray on the test area of your heater to turn it on. The ...An economical, general purpose freeze spray with a wide spray for cooling to test the functionality of the heater just spray on the test area of your heater to turn it on.
To test the functionality of the heater just spray on the test area of your heater to turn it on. The economical, general purpose freeze spray with a wide spray for cooling. Xtreme Heaters recommend testing upon installation and then 4 times a year.