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
Dan Simms  •  Apr 16, 2026
8 Furnace Safety Tips Every Homeowner Should Know
Furnace safety is something every homeowner should prioritize. Use these furnace safety tips to help keep you, your family, and your home safe.
Allie Ogletree  •  Apr 10, 2026
4 Vital Furnace Closet Requirements to Know Before Construction
You and your contractor must adhere to local and federal building codes for furnace rooms to avoid being fined or having to redo your project. To help you get started, here’s what you need to know about building codes for furnace rooms.
Veronica Sparks  •  Apr 10, 2026
Pros and Cons of an Attic Furnace: Should You Install One?
Discover the pros and cons of an attic furnace and get insights and tips for optimal furnace installation and maintenance.
Sara Coleman  •  Apr 10, 2026
Who to Call for Furnace Repair: A Hiring Guide
Furnace repair and maintenance is something best left to HVAC professionals rather than doing it yourself. Find out who to hire to get the job done right.
Barbara Bellesi Zito  •  Apr 10, 2026
Can I Run My Furnace Without a Filter?
Are you running your furnace without a filter? It could damage your furnace and affect your health. Click here to learn why.
Veronica Sparks  •  Apr 10, 2026
Countdown to Cozy: How Long Does It Take to Install a Furnace?
Find out how long it takes to install a furnace, factors that affect installation time, and tips to speed up the process.
Paige Bennett  •  Apr 10, 2026
How Often to Service a Furnace to Stay Warm and Toasty Every Winter
Regular furnace services can extend the life of a furnace and minimize repair costs. Find out how often to service a furnace with this guide.
Jamie Cattanach  •  Apr 10, 2026
How to Bleed a Furnace in 8 Steps for More Efficient Heating
Is it time for furnace maintenance? Here’s how to bleed a furnace and guidance on when to do it so your home’s heating system is in tip-top shape.
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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.