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
Taylor Freitas  •  Aug 4, 2026
7 Common Furnace Problems: Signs, Causes, and Solutions
Furnace problems have all kinds of causes, ranging from clogged filters to damaged components. Here are some of the most common culprits behind these issues.
Paige Bennett  •  Aug 3, 2026
How Much Are Outdoor Wood Furnace Prices? [2026 Data]
When you’re looking for a way to keep warm this winter, check out outdoor wood furnace prices based on size, installation, and other cost factors.
Mitchell Grant  •  Aug 3, 2026
How Much Does It Cost to Replace a Gravity Furnace? [2026 Data]
Gravity furnace replacement cost can be high if there is asbestos present. Use this cost guide to help you decide if you should repair or replace it.
Paige Bennett  •  Aug 3, 2026
How Much Does the Average Furnace Repair Cost? [2026 Data]
What you’ll pay for furnace repairs depends on many factors, including what parts are malfunctioning, where you live, and even the time of day. Here’s a breakdown of what can go wrong with your furnace and the cost to fix those issues.
Dan Simms  •  Aug 1, 2026
5 Signs That Your Furnace Ignitor Is Bad and How to Check It
If you’re having trouble with your furnace firing up or your house just won’t get warm, use this simple DIY guide to check if your furnace ignitor is bad.
Catherine Hiles  •  Jul 31, 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.
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.
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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.