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furnace not heating entire houseAs the weather cools and winter comes in full force in Longmont and throughout Northern Colorado, the furnace becomes one of the most important and frequently used parts of the home. Having a reliable furnace makes all the difference in knowing you’ll be warm and comfortable throughout the day and night. However, on occasion, a furnace can stop working properly, causing the homeowner to look for furnace repair in Longmont. You may be asking, “My furnace won’t heat my whole house: what’s wrong?”

Here are five common reasons why your furnace may have stopped working properly.

Dirty Furnace

One of the most common causes for a furnace not heating the entire home is if any part of the device is dirty. Over time, furnaces and their many parts accumulate dust and debris, which makes it harder for the furnace to push hard air through. If part of the furnace or the ductwork throughout the house is blocked with dust, the hot air likely won’t reach that room. For best results, change your furnace air filter around every 30 to 90 days, especially during times when the furnace is used more frequently, like the winter. You should also have your ducts cleaned every two to three years to remove the dust and debris that builds up over time. Staying on top of furnace cleaning and maintenance can prevent many major issues.

Broken Thermostat

The thermostat sets the temperature for the furnace. If it isn’t working, it’s more difficult for the furnace to work properly. Start by checking that the thermostat is turned on to the heat setting and to the preferred temperature. If you think the thermostat isn’t working or communicating with the furnace, turn the heat setting up five degrees to see if the furnace kicks on. You can also try removing the cover to replace the batteries and clean out any dust or debris. If simple DIY solutions don’t work, the thermostat likely needs to be replaced so it can operate the furnace properly.

Blocked Vents

A simple solution, if the furnace isn’t heating the entire house, is to check that the vents in each room are open and clear. A furnace can be working properly and blowing warm air, but if the vents are blocked by furniture or other heavy items, the room won’t get much warmer. Vents should have a clear airflow so that the warm air can move throughout the room.

Damaged Ductwork or Insulation

If the furnace is working but the house isn’t getting any warmer, it could be because the warm air is escaping. Warm air travels through a maze of ductwork throughout the house. If there is a leak in the ductwork, the air could escape before it reaches the room. The same is true with insulation. If the home’s insulation is old or damaged, especially in the attic area and upper levels, the warm air could be escaping through the ceiling and roof instead of reaching its intended location. Have your ductwork checked for leaks and update insulation with a more efficient version.

Broken Blower

One of the most important parts of the furnace is the blower capacitor, which starts the furnace on the signal from the thermostat. A broken or damaged blower might not have the power to push warm air throughout the entire house, or it could simply not have enough power to start the furnace or keep it running. Blower capacitors often don’t have as long of life spans as the rest of the furnace and may need to be replaced.

These five common furnace solutions can help when the furnace isn’t heating the entire house. If these simple solutions don’t work, call in an HVAC professional for furnace repair in Longmont. The furnace is a vital part of the home and should be treated well to keep you and your family warm and comfortable all winter long.