Have you ever wondered what goes into a heating or air conditioning system for a large office building or another large building like a mall or a school? My name is Evelyn, and I am an HVAC architect. I design heating and air conditioning systems for large, corporate buildings. Making sure that a large building with many rooms or offices is efficiently heated and cooled is a very large job and is much more complicated than simply heating or cooling a home. This blog will educate the reader on how heating and cooling jobs this large are designed and completed.
A furnace that doesn't blow out warm air is useless on a cold day. If your furnace is getting power but no air comes out of the registers, you should call for help from a furnace repair company right away. If the temperature outside is below freezing, you may even need emergency service so your pipes don't freeze and so it's safe to stay in your home. Here are some reasons a furnace doesn't blow any air and how a furnace repair professional might handle the repairs.
1. The Blower Fan Motor Is Burned Out
The blower in your furnace is the fan that turns and makes the air that circulates through the ducts and out the registers. If the fan isn't working, your home won't be able to stay warm. A common reason for the fan to stop working is a bad motor. However, other things could be to blame, such as a bad capacitor.
The furnace repair technician will examine the parts in the blower system, and if the motor is bad, the technician will replace it unless the problem is minor and can be repaired instead.
2. The Limit Switch Is Broken
The limit switch controls when the blower turns on and off based on temperature. This switch is also a safety mechanism because it will shut the furnace down if it overheats to prevent damage to the equipment. When the switch is broken, it might shut down the blower even though it's not overheating.
The repair technician has to determine why the switch shut the blower down. If it was because the furnace overheated, the cause of overheating has to be found so the appropriate repairs can be made. If the issue is a bad limit switch, a new switch can be put in so the furnace blower turns on and off like it should.
3. The Thermostat Is Bad
If your thermostat isn't set correctly, the furnace may not turn on at all. Check the thermostat settings before you call the furnace repair company since adjusting the settings might fix the problem. It's also possible for the thermostat to malfunction. In that case, the repair technician can put a new thermostat in for you. The problem might also be due to wiring and loose connections, so the technician will make sure they pinpoint the problem so your furnace can be returned to normal operation as soon as possible.
Furnace problems can be serious during bitterly cold weather, so if possible, call a repair professional when your furnace starts acting up and before it fails completely.