Why Is Low Air Flow a Problem in Your Furnace?

Dependable Service Since 1926

Autumn is here and the weather is getting cooler by the day. If you own a forced-air furnace, you should check it regularly for signs of trouble. Doing so now gives you ample opportunity to get it fixed before the weather gets too cold, and while you need a trained technician to properly perform a diagnosis, you can still spot the obvious symptoms that something is wrong.

Among those common symptoms is low air flow: air moving through the ducts in your homes more slowly than you might like.


Low air flow is usually caused by one of two general issues: something preventing the air from moving through your system or a problem with the force pushing the air. In the former case, you’re usually looking at a clog in the filter, a crimp or blockage in the ducts, or possibly a breach pulling the air out. In the latter case, it’s usually a problem with the fan or fan motor. Either way, a technician can usually get to the bottom of it fairly quickly.

Why It’s a Problem

The first and most obvious problem with low air flow is that it increases the time it takes for your furnace to warm your home. The system will therefore have to burn more fuel – raising your rates accordingly – and the added strain will be felt in individual components in the system as well. But it goes beyond that. Without anywhere to go, the hot air will remain in your system, elevating the temperature and further adding strain to the components. Most furnaces have an automatic shutdown feature to keep this from damaging your system, but that still leaves you without heat until the system can cool down.

For quality heating repairs in Centennial, CO, call on Bell Home Systems today!

google reviews
4.6 Stars | 2,300+ Google Reviews