Category Archives: Furnace repair

Here is how to repair furnaces for the at home diy do-it-yourself type person or a beginning HVAC heating and cooling student. Furnaces heat are homes during the winter and any problem with the furnace can cost money and problems. We are here to help with any furnace problems you may face.

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 so as not to get shocked. Furnaces can fall into three categories when it comes to capacitors. Not have a capacitor at all. Some… Read More »

Our Picks for Best Furnace Filters for Allergies

Allergies are a nuisance that can affect some more than others, but there is a way to help reduce allergies in a home. Some years are worse than others for allergies, with this being a bad year for allergies, at least for me. Locally where I live, the dust and pollen in the air seem… Read More »

Gas Furnace Components and Parts Explained

A gas furnace can be broken down into its individual parts. Below are the main basic components for almost any gas furnace. Gas Furnace Components and Parts Explained Heat Exchanger When gas burns, it gives off toxic fumes, including carbon monoxide, which is dangerous when breathed in. A heat exchanger is used to keep the… Read More »

Cost to Replace a Furnace Motherboard Control Board

If your furnace needs a new control board, the average cost for an HVAC technician to install it is $400-$700. If you are a DIY type of person, furnace control boards can be bought online for $50-$250, depending on the furnace. Doing it yourself is very tempting so let’s look at a few things needed… Read More »

How To Bypass the Furnace Limit Switch for Testing

Testing the furnace limit switch by bypassing it is common to see if it has gone bad. A furnace should only be run for a short while to test the switch. The furnace limit switch helps protect the heat exchanger from becoming too hot and cracking. If the heat exchanger cracks, it can let noxious… Read More »

Furnace Thermostat Wiring and Troubleshooting

Furnace thermostat wiring falls in the DIY category that a handy type person can hook up or fix. Of course, if in doubt, be sure to call a professional. When working with a thermostat, the cover can be snapped off to expose the wiring. Before doing any work on the thermostat and wiring, take a… Read More »

Test and Replace the Fan Limit Switch on a Furnace

What is a Fan Limit Switch? A furnace has two switches 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 high.… Read More »