Furnace Repair in Marietta - On-Site Today, Diagnosis First

Fast, Reliable Furnace Repair Across Marietta

Furnace repair in Marietta typically costs $150 – $700 depending on the part that failed, and most calls can be handled same-day when you reach our dispatch desk before noon. At Dalton Heating & Air, a real person answers the phone 24/7, and every repair gets a written price before we touch a screwdriver. If you’re sitting in a cold house off Whitlock Avenue or near Kennesaw Mountain, call (361) 306-9515 and we’ll get a tech rolling to your neighborhood fast.

Call (361) 306-9515

We know Marietta’s heating systems the way a good mechanic knows the quirks of a specific make and model. The houses here run the gamut from 1960s brick ranches in East Cobb to 2010s townhomes on the West Side, and the furnace in each one behaves differently under load. That’s why we send background-checked, uniformed technicians who service all nine major residential brands and diagnose the actual fault before quoting a dollar amount. No vague estimates. No door-price changes.

Our Furnace Repair team covers every Marietta ZIP code, from 30008 to 30090, and we stock common parts on the truck so we’re not running back and forth to a supply house while your house sits cold. When the temperature dips into the 20s overnight, as it does most winters here, a furnace that won’t fire isn’t an inconvenience. It’s a health risk for kids and older adults. We treat it that way.

Why Dalton Heating & Air Is Marietta’s Preferred Furnace Repair Company

Dalton Heating & Air is a Garrison Partners company, held to The Garrison Standard since 2003, and that standard applies on every single call in Marietta. Written price before any work starts. Written guarantee on every repair. Free return visit if the repair fails within the guarantee window. Those aren’t add-ons or upsells. They’re non-negotiable terms of The Garrison Code.

Marco Benitez leads our team, and he runs every job by the same book: arrive inside the stated window, diagnose before quoting, do the work by the book, leave the site clean, and stand behind it for a full year under the 365-Day Done Right Promise. That promise means if the repair doesn’t hold, we’re back at no charge. Not a pro-rated credit. Not a callback fee. A free fix.

Marietta homeowners call us because they’re done with no-shows and crews that leave a mess. We answer the phone with a live person 24 hours a day, and we tell you who’s coming before they arrive. Our techs are factory-trained on Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. When we service a furnace in Marietta, we know the unit, the local housing stock, and the failure patterns that show up here specifically.

Heating Repair in Marietta

Heating Repair in Marietta usually means one of three things: the furnace won’t ignite, it lights but the blower won’t push warm air, or it runs constantly without hitting the set temperature. The fix depends on the root cause, and in Marietta homes that root cause often traces back to the building itself as much as the equipment. An oversized furnace in a 1970s ranch, for example, will short-cycle and wear out ignitors and limit switches prematurely. A correctly diagnosed repair addresses the part that failed, but a good tech also tells you if the system itself is sized wrong for the house. Most heating repairs in Marietta run $150 – $700, with the low end covering ignitor replacements and the high end covering gas valve or blower motor work.

Ignitor and Flame Sensor Work

Older furnaces in East Cobb and Chimney Springs often use hot-surface ignitors that get brittle after a decade of cycling. When one cracks, the furnace won’t light at all. It’s a quick diagnosis and a straightforward swap, typically in the lower third of the repair range.

Gas Valve and Control Board Issues

When a gas valve sticks or a control board fails, the symptoms can look like an ignition problem at first. These are pricier repairs, but we test the component before replacing it, and we show you the reading. The written price covers the part, labor, and the full-year guarantee.

Boiler Repair in Marietta

Boiler Repair in Marietta applies to the smaller but real number of homes around the city, mostly older properties near the historic downtown area and a few larger East Cobb estates, that still run hydronic heat. A boiler that loses pressure, makes knocking sounds, or refuses to hold temperature needs a different skill set than a forced-air furnace, and our techs carry the right gauges and parts to diagnose it properly. Boiler repairs in the Marietta market follow the same $150 – $700 range as furnace work, though low-water cutoff or circulator pump replacements tend toward the middle of that band. If your radiators are cold and the boiler is running, don’t wait. Low boiler pressure left unaddressed can damage the heat exchanger, and that’s a much bigger bill.

Circulator Pump and Zone Valve Repairs

Boilers in older Marietta homes often use multiple zones, one for each floor or wing. When a zone valve seizes or a circulator pump fails, part of the house goes cold while the rest stays warm. We test each zone’s wiring and flow before quoting anything.

Pressure and Expansion Tank Checks

Georgia’s seasonal temperature swings put extra stress on boiler expansion tanks, which absorb the pressure changes as water heats and cools. A waterlogged tank shows up as pressure spikes on the gauge. It’s a common fix, and one that prevents leaks at the relief valve.

Trusted Brands We Service in Marietta

Dalton Heating & Air is factory-trained on all nine major residential HVAC brands, and around Marietta that means a lot of Trane, Lennox, Goodman, and Rheem units built between the late 1980s and today. We stock common capacitors, ignitors, flame sensors, and pressure switches for these brands on our trucks, so a typical repair doesn’t require a second trip. If you’ve got a Lennox in a Powder Springs Road ranch or a Rheem in a Kennesaw Avenue bungalow, we already know how it’s built and how it fails. That brand-specific knowledge shortens diagnosis time and gets heat back on faster.

Common Furnace Repair Problems We See in Marietta Homes

• Short-cycling in older ranches. Many 1960s and 1970s homes in neighborhoods like Sherwood Forest and Princeton Corners got oversized furnaces at original build. After remodels added square footage, nobody recalculated the load, and the furnace still short-cycles years later. That wears out ignitors, blower motors, and limit switches ahead of schedule.
• Weak blower motor capacitors. Marietta winters are usually mild enough that a weak capacitor goes unnoticed until a hard freeze hits. The furnace tries to start, the blower can’t spin up, and the system locks out. It’s a $150 – $250 repair if caught early, and a full motor replacement if ignored.
• Heat exchanger cracks in 1990s-era units. East Cobb subdivisions built in the 1990s are full of Goodman and York furnaces now hitting 25 – 30 years old. A cracked heat exchanger is a carbon monoxide risk and often gets masked by AC refrigerant issues on the paired system. We test combustion readings on every furnace call, not just when the customer reports a smell.
• Clogged condensate lines on high-efficiency units. Newer 90%+ AFUE furnaces in West Side townhomes produce condensate that drains through a PVC line. Georgia’s humidity and dust load can plug those lines, triggering a pressure switch fault that shuts the furnace down. It’s a quick fix, but it looks like a much bigger problem when the furnace won’t run.

Pricing for Furnace Repair in Marietta, GA

We Also Serve Cities Near Marietta

Dalton Heating & Air runs furnace repair calls throughout Marietta and the surrounding metro. Our techs regularly work in Smyrna, Kennesaw, Powder Springs, and Atlanta, so if you’re just outside the city limits, the same written-pricing guarantee and same-day response apply. Dispatch is coordinated from the brand’s Atlanta office, with crews serving Marietta locally.

FAQs About Furnace Repair in Marietta