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We Answer Your Frequently Asked Questions
Q: How many amps does my heater draw?
A: Watts / volts = Amps. Check page 87 of our application guide for more information.
Q: How do I know this heater will be hot enough for my engine?
A: Each block heater is designed for a specific engine application. The wattage is recommended by the engine manufacturer. As a rule, circulation heaters need 2-3 watts per cubic inch displacement.
Q: How hot does the heater get?
A: On average, a block heater creates a 30 degree rise in coolant temperature over ambient temperature. The engine may not feel warm to touch.
Q: If I give you the size of my freeze plug, can you tell me which heater to use?
A: No, there are other factors involved to ensure a reliable installation. Internal clearance, wall thickness, inner wall shape etc. are some of the reasons. Please see our application guide for the correct heater for your specific engine year and model.
Q: Will a Lower Radiator Hose Heater work in my vehicle?
A: Please see application guide for use.
Q: How do I get a copy of installation instructions?
A: Please contact Customer Service using the numbers provided in the phone list link on this site.
Q: Can I plug the interior heater into my cigarette lighter in my car?
A: Phillips & Temro Industries does not manufacture a 12 volt interior heater. Twelve volt limits the heat that could be produced to about 360 watts assuming a 30 amp fuse in the cigarette lighter circuit. It is very inefficient to run an interior heater on 12 volts.
Q: My car and/or engine is not listed in your catalog, what do I do for a heater?
A: Phillips & Temro Industries has a heater sized and fitted for at least 90% of all engines in the market place. If we don’t have one for your size of engine, we would recommend a lower radiator hose heater or circulation heater.
Q: Do you have other products available that are not in your catalog?
A: Phillips & Temro Industries has other products available that are OEM (Original Equipment Manufacturer) specific. These products cannot be sold to the aftermarket because of proprietary agreements with those customers.
