Furnace

A furnace is your home's heating powerhouse, converting fuel or electricity into warm air that circulates through your living spaces. Whether you're dealing with routine maintenance, strange noises, or considering an upgrade to a more efficient model, understanding your system helps you make smarter decisions. From repairs to full replacements, Angi connects you with local pros and resources to keep your home comfortable year-round.

Related to Furnace Service

Furnace Service Articles and Advice
Paige Bennett  •  Jul 20, 2026
How Does a Furnace Work? Breaking Down the Process of Gas, Oil, Electric, and Propane Heating
When the furnace stops working, it helps to know how it’s supposed to work to nail down the issue. So how does a furnace work? Find out with this guide.
Veronica Sparks  •  Jul 20, 2026
Furnace vs. HVAC: What’s the Difference?
What is the difference between a furnace versus HVAC? Here’s what homeowners should know about the differences and similarities between these home heating terms.
Angela Brown  •  Jul 20, 2026
5 Types of Gas Furnaces to Keep You Cozy at Home
Need to purchase a new gas furnace but aren’t sure which type is right for your home and needs? Taking a little bit of time to research furnaces to see which option is right for you can save you money over time. Here’s a look at five furnace types.
Kelly Weimert  •  Jul 15, 2026
7 Signs You Should Replace Your Heating System
Don't get left out in the cold. These warning signs can help you determine whether you need to replace your heating system to keep you cozy all season long.
Tyler Lacoma  •  Jul 15, 2026
How Much Does It Cost to Replace an Oil Furnace With Gas? [2026 Data]
Switching from oil to gas heating could impact your savings. This guide will help you understand the cost to convert from an oil furnace to a gas furnace.
Audrey Bruno  •  Jul 15, 2026
6 Signs of Furnace Problems
Furnace trouble can be frustrating, so learning the telltale signs of a failing furnace is important. Recognize the following red flags for a malfunctioning furnace.
Catherine Hiles  •  Jul 15, 2026
9 Common Furnace Problems and How to Fix Them
Whether you’ve lost heat or your furnace is making strange sounds, stay calm. Use this guide to determine the source of the problem and your next steps.
Jenna Jonaitis  •  Jul 10, 2026
16 Furnace Maintenance Tips to Keep Your Home Cozy All Season Long
Prepping your furnace can extend the life of your unit and stop costly repairs. Follow these furnace maintenance tips for a warm, stress-free winter.
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Common Furnace Service Questions

Yes, two-stage furnaces are quieter than single-stage ones. There are two reasons for this. First, two-stage furnaces routinely operate at a lower setting, which makes less noise than a full-powered single-stage furnace. Second, two-stage furnaces don’t turn on and off like their single-stage counterparts. Single-stage furnaces often make rattling, popping, banging, and scraping sounds.

Costs depend on furnace size, efficiency rating, labor, and whether additional ductwork is needed.

Common furnace problems that require servicing or repair include clogged filters, faulty ignitors or ignition failures, broken thermostats, fuel pump issues, and airflow obstructions or other airflow-related issues.

In most areas, a permit is required to install or replace a propane furnace. Permitting ensures the work meets local building codes and safety standards. Your installer will often handle the permitting process, ensuring everything is documented correctly and inspected for compliance. Ensure that you ask your installer about permitting requirements before the installation begins.

Expect to pay between $3,800 and $10,000 to purchase and install a new gas furnace. The average gas furnace cost is $7,000. A modulating gas furnace costs the most, whereas a single-speed furnace costs the least but is also the least efficient. Gas furnaces with a higher efficiency rating will also cost more.