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Bartels Heating & Cooling Blog

Why Isn’t My Furnace Providing Enough Heat?

cold-manThe weather is cooling down at the end of October—we’re finally in the full fall weather. That means furnaces are going to start coming on for the first time since early spring.

Unfortunately, sometimes furnaces might have a surprise in store for a home—not delivering enough heat to keep people warm. If this is happening in your house, you can at least be thankful you caught the problem early in the season. With professional furnace repair in Lebanon, OH from our experts, you can have the system back in great shape before the worst cold of winter arrives.

Reasons for Low Heat or No Heat

Is the furnace running, but the air coming from the vents isn’t warm enough? There are a number of possibilities:

  • You have a clogged air filter that needs to be changed. We also recommend checking on the air filter first when you encounter furnace trouble. Putting in a fresh one may often be all that needs to be done.
  • The burners in the furnace either aren’t lighting or not all of them are lighting. A failure to light might be due to a broken ignition system or, in an older furnace, a pilot light that’s gone out. Burners that aren’t all lighting can mean corrosion or dirt along the surfaces. As with any repair for a gas furnace, you must leave the job of finding out what’s wrong and how to fix it to a licensed professional.
  • The thermostat in the house is misreading temperatures. Even a small miscalibration with the thermostat can cause it to fail to heat the house properly.
  • Leaking air ducts are allowing most of the hot air moving through the ventilation system to escape into the attic or between walls. If you notice that the air from the vents is not only cool, but also sluggish, the problem may be from duct leaks. Our professionals can seal the ducts to solve this.
  • The furnace is undersized. This can happen when non-professionals install a new furnace. If this is the first winter you’ve had the furnace, this may be the problem—and the only way to fix it is to have genuine professionals replace it with a properly sized unit.

What if the furnace isn’t coming on at all? No heat, no air from the vents?

  • Check the circuit breaker panel to see if a circuit has tripped. Gas furnaces need to have electrical power to run the blower fan as well as ignite the burners, so a loss of electricity means the furnace won’t come on at all. If you reset the breaker and it trips again, the furnace probably has an electrical problem that needs professionals to investigate.
  • The thermostat has lost its connection to the furnace. A thermostat has multiple wires to control different parts of the furnace, and if the connection to either the blower fan or the ignition system fails, the furnace won’t provide any heat.

Call Bartels Heating & Cooling “For a Comfortable Way of Life.” Providing services in Hamilton, OH and the Surrounding Area.

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