Different Types of Fuel
1. Natural Gas
A natural gas furnace ignites gas from the line to your home in the furnace’s burner. These flames within the burner then heat the metal exchanger and convert cold air into warm air. A natural gas furnace is not the cheapest to purchase; however, it has a low cost to operate.
2. Electricity
An electric furnace uses electric heating elements to convert cold air to hot air (similar to a toaster oven). An electric furnace is the cheapest type of furnace to purchase; however, it often has the highest cost to operate.
3. Oil & Propane
Oil and propane furnaces function similarly to their natural gas counterparts. The difference being that each fuel type has its unique benefits. Oil burns at a higher temperature (heating your home faster) and propane is more efficient than natural gas. The caveat is your home needs to have the proper accommodations to support these fuel types.
Change Your Furnace’s Filter
What Is an AFUE?
Different Types of Stages
1. Single-Stage
A single-stage furnace only has one flame size. This means the flame can either be on or off and your furnace will fluctuate a couple degrees above and below your desired temperature.
2. Two-Stage
A two-stage furnace has two flame sizes (one small and one large). The two flame options give the furnace more accuracy to maintain your desired temperature.
3. Modulating
A modulating furnace has complete control over the size of the flame. The modulating flame creates the most accurate temperature control from any furnace on the market!
We hope this helps you in your furnace research journey! Of course, if you have any further questions about a specific furnace model, your home’s comfort, or general HVAC needs, reach out and a home comfort specialist will be in touch!