Category Archives: HVAC how to

HVAC or Heating Ventilation and Air conditioning has been with us for some time now from gas furnaces to cooling the air in our homes. The problem as with anything modern is it cost money when things break. This site is here to help everyone from the at home do-it-yourself person to the beginning HVAC technicians. With articles about troubleshooting HVAC problems.

Our Picks for Best 120 Volt Electric Garage Heaters

Keeping a garage warm, or at least warmer, is ideal when working during the winter. One of the problems with many garages is they lack a 220 volt outlet to run a heavy duty heater. 220 volts is ideal to get the high amps needed to run a commercial style electric heater. With that said… Read More »

Test and Replace the Fan Limit Switch on a Furnace

What is a Fan Limit Switch? A furnace has two switches called a fan limit switch and a high limit switch, these switches can be separate or in one package called a combination switch. High limit switch A high limit control switch will turn off the gas to a furnace if the temperature becomes too… Read More »

Furnace Filters Reviews: Best to Worst

Replacing a furnace filter is often not on the top of the to-do-list. It can be overlooked until the furnace is not working properly or the air becomes less clean. People with allergies are often the first to notice when a furnace filter has become dirty and needs replaced. And just as important a dirty… Read More »

How to Test Water Column Gauges for Gas Furnaces

What is Water Column? Water column is how gas pressure is measured. The first devices to measure gas pressure were tubes in a U-shape half filed with water. Pressure was applied to one side of the tube from a gas line and other side left open. How far the gas pressure pushed the water up… Read More »

How To Buy and Replace a Furnace Capacitor

Purchasing a furnace capacitor and installing it is easy to do and falls into the do-it-yourself category. Basic precautions need to be taken mainly turning the power off to the furnace as not to get shocked. Furnaces can fall into three categories when it comes to capacitors. Not have a capacitor at all. Some units… Read More »