Electronic Ignition Furnace Blowing Cold Air

The standing pilot light was the regular way to ignite gas powered furnaces for almost as long as these heating systems have existed.

Electronic ignition furnace blowing cold air.

Well if your furnace is blowing cold air it s most likely due to one of these problems. The blower keeps blowing to cool the furnace down to a safe level. When overheating your furnace can trip a high limit switch causing the furnace burners to shut off so that the heat exchanger does not crack. But now an electric ignition system have started to replace pilot lights.

Your thermostat settings need to be adjusted you have leaky air ducts your fan limit switch settings need to be adjusted. Broken or peeling duct tape broken mastic or ductwork. Your furnace blowing cold air could be caused by hot air escaping through holes in the duct work that carries the heat throughout your building. Electronic ignition gas furnace problems troubleshooting gas furnaces are a prevalent form of heat for homes and businesses and occasionally a gas furnace needs to be repaired because of a problem with the gas furnace.

Since there are many different types of gas furnaces it is difficult to cover every single possible gas furnace problem that can occur with a gas furnace in one article. Because an electric ignition does not. Fred paul getty images if your gas furnace is blowing cold air a number of factors could be to blame many of which you can address on your own without the immediate help of a service professional. Why is my furnace blowing cold air.

It s possible your furnace overheated. A dirty air filter blocks airflow over the furnace s heat exchanger causing it to overheat. If so the limit switch a furnace safety device turned the furnace burners off. Check the furnace s air filter your furnace may be blowing cold air because the filter is too dirty.

Although the furnace may be sending heated air into the ductwork by the time it gets to the registers it may only be cool air blowing out. Have an expert inspect your ducts along with the furnace.