How to Determine What Size of Furnace You Need

Furnace Size in Savannah, GA

When the colder weather hits the Savannah region, it can be so nice to get warm and cozy at home. If you’re in need of a new furnace, either because of a new build or because it’s time to replace your old unit, you may be wondering what size of furnace would be ideal. This is a common question that our customers ask us at Savannah Air Factory, and we’re always happy to provide our neighbors with more information.

Size Matters

The “size” of a furnace is measured in terms of its capacity. Specifically, the industry uses something called “BTUs.” BTU stands for “British Thermal Units.” One BTU is the amount of energy needed to raise the temperature of 1 pound of water by 1 degree Fahrenheit.

It makes sense that a larger home would need a larger furnace. A rule of thumb is that 30 to 60 BTUs are required per square foot. Therefore, a 2,000-square-foot house would need a furnace with a size of between 60,000 and 120,000 BTUs.

We realize that this is a pretty wide range. A few factors can help you narrow this range down even further. A newer home with plenty of insulation can use a smaller furnace than an older home with poor insulation. Windows can let hot air escape, so how many windows your home has is also important to consider.

Efficiency Is Important, Too

Furnaces are usually labeled with efficiency ratings. This indicates how effectively hot air can be pumped out. If a furnace has 100,000 BTUs and an 85% efficiency rating, its actual output would be 85,000 BTUs.

Ready to Answer Questions

At Savannah Air Factory, we frequently assist people in Savannah with furnace installation and repair. We’re committed to providing a high level of service, and we can match any competitor’s price. We’re proud to have earned a 2019 Coastal Empire Best of the Best Award. We help customers with the installation, repair, and maintenance of heating and cooling units. Give us a call to ask any questions or to set up a time in which we can discuss your heating needs.