Serving Boise & Surrounding Areas

5 Common Furnace Problems

It’s that time of year when the furnace starts to kick on to battle those cold fall mornings. However, since it hasn’t been used in quite some time, the furnace might experience some issues. Here are some of the most common furnace problems, and how they can be avoided or repaired:

1. Frequent Cycling

If the furnace is turning on and off quite frequently, it could indicate a problem with air flow. Check the air filter to make sure it is not clogged. If the filter is clean, it could be a bad setting on the thermostat.

2. Wear and Tear

Over the years, wear and tear is normal, but it can lead to some issues like improper airflow, heat-control issues, or overheating. Continue to get the heating system serviced regularly to combat wear and tear, and be prepared to purchase a new furnace when the cost of repairs outweighs replacement.

3. Not Enough Heat

If the heater isn’t bringing the house up to the desired temperature, the filter could be clogged, or the furnace may simply be the wrong size for the home. Check the filter first, and if that is not the problem, have Diamond Heating and Cooling help determine if you have the right size furnace.

4. Noisy Furnace

Noises coming from the HVAC system can be normal, but if they have suddenly developed and were not present before, it could be cause for concern. Rumbling, squeaking, and rattling sounds are good reasons to call Diamond Heating and Cooling to come take a look.

5. Lack of Maintenance

Without proper annual furnace maintenance, the furnace will deteriorate at a faster rate and develop problems. Schedule maintenance to keep the furnace running smoothly for as long as possible.

Many furnace problems occur unexpectedly, but generally, annual maintenance can catch these issues before they become a larger and more expensive problem. If any of the above issues pop up this furnace season, Diamond Heating and Cooling is here to help.

What Size Furnace Do I Need?

Furnace size matters and bigger is not always better. Finding the right size furnace will depend on the size of the area it needs to heat. Diamond Heating and Cooling can help determine the proper size for your home. Take a look at what happens when people get the wrong size furnace:

Undersized Furnace

A furnace that is too small for the space it is heating will have a hard time reaching the desired temperature programmed on the thermostat. This means it will run more often if not constantly, trying to keep up, which will waste energy and increase energy bills.

Oversized Furnace

While an oversized furnace will be able to keep the house at the desired temperature, it might do its job a little too well. Some areas of the house may get overly warm before the overall temperature reaches the thermostat setting.

It will also be less efficient, constantly cycling and using extra energy. This will not only increase energy bills, but will reduce the life of the furnace as well.

Perfectly Sized Furnace

The furnace that is the right size for the home will be able to efficiently reach the desired temperature, even on those cold days. It won’t short cycle or spend too much time in the “warming up” stage.

For those who suspect their furnace might be the wrong size, talk to the experts at Diamond Heating and Cooling. They can determine the right furnace size, install it, and guarantee that it will reach desired temperatures, or they will replace the system at no charge.


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