Category Archives: HVAC how to

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. Can I Replace My Own Furnace Circuit Board? Doing it yourself is very tempting… Read More »

8 Reasons a Furnace Will Not Work

If your furnace is giving you trouble and not starting, you can try several things before calling a technician. While the furnace may have a problem that requires a technician to troubleshoot, there are often simple causes. Below are eight common reasons a furnace will not start to try out before calling a professional. Of… 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 »