Furnace Troubleshooting
Air flow problems
If your furnace is turned on but there is no air flow or air flow problems then there is a mechanical problem. One possibility is a worn part in the fan motor, which is impairing the performance of the motor. The cause could also be a bearing that is failing, or a worn out belt. All of these are serious issues and likely require the services of a licensed heating and air conditioning expert
Heat exceeds set temperature
So you’ve set your thermostat to a certain temperature and the heat level exceeds the set temperature. One possible cause is that the thermostat is mounted crookedly. If this looks to be the case, remove the cover to the thermostat, loosen the screws that hold the thermostat unit to the wall and then level the thermostat. Retighten the screws and replace the cover. Another possible cause is that the thermostat heat anticipator needs adjusting. This device is mounted in the center of many mechanical thermostats and it calibrates at which point the thermostat turns off the furnace burners. Adjusting this … Continue reading
Gas furnace blower does not turn off
Does your gas furnace blower continue blowing and blowing and does not turn off? There are a few reasons this could be happening. Many theromostats have a “fan continuous” setting which, if enabled, would explain why the blower would not turn off. So change the setting off of fan continuous if this is the case and turn it to the “automatic” setting. If the setting is not the cause of the blower staying on the problem is likely a faulty fan limit control switch and this will have to be replaced. We strongly suggest you consult your heating expert for … Continue reading
Furnace turns on and off too often
If your gas furnace turns on and off too frequently this could be caused by a few different issues. It could either be a thermostat problem, a blower problem or even a dirty air filter. The dirty filter is the first thing to check because it’s an easy fix. Go ahead and replace the filter and see if this fixes the gas furnace turning on and off too frequently. If so, make sure you have this checked each month. If the issue is a thermostat or blower problem then we recommend a professional to assist you. Both of these issues … Continue reading
Furnace pilot light is out
Did your furnace pilot light go out? A pilot can extinguish or go out due to a strong draft, of unexpected wind,a dirty orifice or possible dirt in the gas tube. The burner in your gas furnace is ignited either by electronic ignition as found in most new, modern furnaces or with a pilot flame common in older style furnaces. The gas furnace standing pilot is sometimes referred to as a pilot light, and should be lit all the time. Its purpose is to serve as a small ignition flame for the gas burner. And when this little flame fails … Continue reading
Pilot Light will Not Stay Lit
If the pilot light will not stay lit, that is when you have stopped pushing down on the pilot light button, and then the pilot light goes out, then the issue is a faulty thermocouple. It will need to be replaced and is a more complicated procedure with special tools involved. We strongly suggest you hire a furnace technician for this work. Now if the pilot light will not start at all, even when the pilot light button is being held down, then there is likely a problem with the gas getting to the furnace. It could be as simple … Continue reading
Gas furnace makes noise
Is your gas furnace making a loud noise, at least louder than it used to be? If it makes a squealing sound or a low pitched rumble sound we may know the source of the problem? The high pitched squealing sound is usually the blower belt slipping. The first thing to check is proper belt tension in the belt. The belt should depress about 1″ at the center of span. If the belt is too loose it should be tightened, but be careful not to tighten the belt to tight. A belt that is too tight can damage your furnace. … Continue reading
Furnace not producing enough heat
The furnace is on and it’s working but it’s not producing enough heat to keep the house warm. If this is your scenario, read on! The first and easiest thing to check is your air filter. If you have a very dirty air filter in your furnace, this could be the culprit. If you haven’t replaced the air filter in the past few months, replace it and see if the heater works more efficiently. The other possible culprit is your gas burners. The gas burners may be dirty or need need a slight adjustment. Unfortunately, this job can be a … Continue reading
Trouble shooting a furnace thermostat
Need some help trouble shooting your furnace thermostat? The furnace thermostat is one of the first things we check when you are having problems with your gas furnace. A thermostat controls how much heat will be produced by the furnace and when the heat is produced. When the furnace fails to meet the temperature set by the thermostat, this could be one of several issues. The first thing to check is if the thermostat is level on the wall, it can affect the automatic turning on and off of the furnace. The thermostat will need to be remounted on the … Continue reading
furnace not producing enough heat
Is your furnace on but not producing enough heat to keep the house warm? There are two possible causes, the most likely cause is that you have a very dirty air filter in your furnace. If you haven’t replaced the air filter in the past 2-3 months, replace it and see if the heater produces more heat efficiently. The other possible cause is your gas burners are dirty or need need a slight adjustment. We recommend you call your local heating repair contractor to trouble shoot and repair this issue.