January 11th, 2010 at 3:56 am » Comments (0)

This is a basic millivolt style spa/hot tub/swimming pool gas heater schematic. It is not particular to any specific brand of gas heater, and it will give you a basic overview of the control circuitry involved with them.   more »

January 11th, 2010 at 3:35 am » Comments (0)

For those of you that have gas heaters (natural or propane) installed, you really need to do an annual check of your heat exchanger and clean it if necessary. If your exchanger gets clogged, your heater can destroy itself.   more »