Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateFast, Reliable Furnace Repair Across Roswell
Most furnace repairs in Roswell run between $150 and $700, and the majority of jobs are completed in a single visit. If your furnace has quit on a cold night in Crabapple or Martins Landing, you want a technician who answers the phone, gives you a written price before touching a tool, and actually shows up. That’s how we work. Cold Harbour Heating and Air Marietta serves Roswell with upfront pricing, a 365-day written guarantee on every repair, and a live person answering the phone 24 hours a day. Call (762) 240-5599 and you’ll speak to a human, not a machine.
Why Cold Harbour Heating and Air Marietta Is Roswell’s Preferred Furnace Repair Company
Roswell homeowners tell us the same story over and over: they called a company, got a vague estimate over the phone, and watched the price climb once the tech opened the cabinet. That doesn’t happen with us. Every job starts with a written price before any work begins, and that number doesn’t move at the door. It’s called The Kingswell Way, and it’s how we’ve operated since 2003 as part of the Kingswell network of independently owned HVAC businesses.
We know Roswell’s housing stock. Our Furnace Repair team has been inside hundreds of homes from the historic district off Canton Street to the 1990s subdivisions along Highway 92. We understand crawlspace furnaces in pier-and-beam foundations, attic units squeezing through narrow pull-down stairs, and the pine needle buildup that chokes condensers under Roswell’s dense tree canopy. Victor Mancini, who leads our team, insists on one standard: a repair isn’t done until the customer has a written guarantee in hand and the job site is cleaner than we found it.
Styles & brands we work with
Furnace Maintenance in Roswell
Furnace Maintenance in Roswell is a preventive job that costs $80 to $200 and typically takes 60 to 90 minutes. A maintenance visit includes checking the heat exchanger for cracks, testing the ignitor and flame sensor, cleaning the burners, inspecting the gas valve, and measuring static pressure across the blower. In Roswell’s older homes, we pay special attention to duct leakage and filter restriction, because a 1990s furnace running against a clogged filter will trip the high-limit switch long before it actually fails.
Annual Inspections Before Cold Weather
Schedule maintenance in October or early November, before the first hard freeze. Roswell’s mild winters mean furnaces sit idle from April through October, and dust, pollen, and the occasional rodent nest can settle into the burner compartment during those months. A quick pre-season check catches small problems before they become $700 repairs on the first 20-degree morning.
Filter and Airflow Checks on Older Ductwork
Many Roswell homes built before 2000 still have original ductwork that was sized for a smaller system or has developed leaks at the joints. During maintenance we measure airflow at the return and supply plenums and flag any static pressure readings that suggest a restriction. If the furnace is short-cycling, it’s usually airflow, not the burner.
Heat Pump Repair in Roswell
Heat Pump Repair in Roswell costs $150 to $650 and covers everything from reversing valve failures to refrigerant leaks to defrost control board replacements. Many Roswell homes use heat pumps as their primary heating source, especially in subdivisions without natural gas lines. A heat pump that won’t switch into heating mode on a 30-degree night is a real problem, and it’s usually the reversing valve or a failed defrost sensor, not the compressor itself.
Cold-Weather Defrost Problems
Roswell’s occasional freeze events can ice over the outdoor coil and trigger the defrost cycle repeatedly. If the defrost thermostat or control board has failed, the coil freezes solid and the system can’t produce heat. We diagnose this by checking the defrost board, the sensor, and the auxiliary heat strips. The fix is often a $150 to $400 part replacement, not a new system.
Heat Pump vs Furnace on the Coldest Nights
Heat pumps lose efficiency as outdoor temperatures drop below 40 degrees, and Roswell does get nights in the low 20s. If your home has a dual-fuel setup with a gas furnace as backup, both systems need to communicate properly. We check the thermostat wiring and staging controls during any heat pump repair to make sure the backup heat kicks in when it should.
Trusted Brands We Service in Roswell
Our technicians are factory-trained on major residential brands including Trane, Lennox, Goodman, and Rheem, plus Carrier, York, Daikin, Bryant, and American Standard. We keep common parts for these brands stocked on our service vehicles, which means less waiting around for a shipment when your furnace is down. If you’ve got an original Rheem from a 1998 build in the Brookfield subdivision or a Trane in a newer home near East Cobb, we can diagnose and repair it without hand-wringing about parts availability.
Common Furnace Repair Problems We See in Roswell Homes
- Seized blower motors on 1990s furnaces. In Martins Landing and other established neighborhoods, original blower motors are reaching the end of their service life. A motor drawing high amperage will trip the limit switch and shut the furnace down, even when the heat exchanger is fine.
- Pine needle and pollen-clogged condensers. Roswell’s tree canopy is beautiful, but it sheds constantly. Clogged outdoor coils force the system to work harder, overheat the heat exchanger, and cause repeated furnace lockouts in winter.
- Single-zone ductwork that never heated the back bedrooms. Older Roswell homes often have one thermostat and unbalanced duct runs. The furnace works, but the room over the garage stays 8 degrees colder. A like-for-like swap doesn’t fix this.
- Obsolete R-22 refrigerant systems. Many Roswell homes built in the 1990s still run on R-22, which is phased out under EPA rules. When a repair touches the refrigerant side, homeowners face a conversation about conversion or replacement, not just a quick fix.
See the difference
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After
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AfterPricing for Furnace Repair in Roswell, GA
Here’s what honest pricing looks like in Roswell. A typical furnace repair runs $150 to $700, depending on what’s actually broken. Furnace maintenance is $80 to $200. Heat pump repair falls between $150 and $650. These ranges include parts and labor. What moves the price is the part itself: an ignitor replacement is on the low end, while a blower motor or gas valve replacement heads toward the top. Before any work begins, you get a written price. It does not change at the door. Call (762) 240-5599 for a free estimate.
| Service | Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| Furnace Maintenance | $80 – $200 |
| Heat Pump Repair | $150 – $650 |
What Makes Roswell’s Older Homes Different
Roswell’s historic district features well-preserved antebellum and early 20th-century homes that need creative HVAC solutions to keep architectural integrity intact while meeting modern comfort standards. Meanwhile, the large subdivisions built from the 1980s through the early 2000s are full of original systems approaching end-of-life. In the historic homes near the Chattahoochee River, we often see pier-and-beam foundations with tight crawlspaces where furnaces sit in damp, low-clearance areas. In the 1990s subdivisions, the issue is different: original R-22 systems now obsolete under the EPA phase-out. A simple furnace repair in Roswell’s 1990s housing stock often turns into a larger conversation about refrigerant conversion or full system replacement. Unlike neighboring Alpharetta, where mid-2000s builds are mostly R-410A already, Roswell’s older inventory still carries a lot of R-22 equipment.
This is why a like-for-like swap disappoints in an older Roswell house. A technician pulls out a 1998 Goodman furnace and drops in a new high-efficiency unit without checking whether the original ductwork can handle the new airflow requirements. The old ductwork was sized for a less powerful system. The new furnace starves for air, trips the high-limit on the first cold snap, and the homeowner blames the equipment. We don’t do that. We test static pressure, we look at the existing coil, and we tell you the truth about what your ductwork and refrigerant lines can support. Sometimes that means a repair. Sometimes it means a properly engineered replacement.
We Also Serve Cities Near Roswell
Our Roswell crews regularly handle furnace repair calls in nearby Woodstock, Marietta, Holly Springs, and Kennesaw. If you’re in a neighboring city and your furnace is acting up, we can usually get a technician to you the same day. See our Furnace Repair in Roswell page for more on our local coverage and response times. Call (762) 240-5599 and a live person will pick up.
Serving Roswell, GA - Our Local Coverage Area
We’re based in the Roswell area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Furnace Repair in Roswell
The refrigerant lines only matter if your system includes air conditioning or a heat pump, which most Roswell homes do. R-22 lines can often be flushed and reused with a new R-410A system, but only if the line sizes are compatible with the new equipment’s requirements. We inspect the lines during any furnace replacement estimate and tell you exactly what’s needed before you commit to anything. Call (762) 240-5599 and we’ll walk through it.
The high-limit switch trips when the furnace gets too hot, and in older Roswell homes that’s almost always an airflow problem, not a flame problem. Tight ductwork, a dirty filter, or a blower that’s running slow can all cause it. We’ve also seen under-sized return air in historic homes where original plaster walls made adding duct runs difficult. This is a diagnostic job, not a guess, and we’ll show you the readings before recommending a fix.
Yes, and it’s one of the most common issues we see in heavily treed Roswell neighborhoods. Pine needles clog the outdoor condenser coil, which raises the system’s internal temperature and pressure. In winter, that extra strain can overheat the heat exchanger and cause repeated lockouts. If your furnace keeps shutting off and you’ve got pine trees near the outdoor unit, start by clearing the coil and checking the airflow. We do this as part of every maintenance visit.
Tight access can affect repair costs, not because we charge more for inconvenience, but because some repairs take longer and some parts are harder to maneuver in confined spaces. A blower motor swap in a 30-inch crawlspace takes more time than the same job in a full basement. When we quote a repair, the written price you get before work begins already accounts for the actual conditions in your home. There’s no surprise surcharge when the tech crawls under the house.
Roswell’s winters are mild enough that a modern heat pump can handle most of the heating load, and many homeowners are making that switch as their old R-22 equipment reaches end-of-life. A heat pump also gives you efficient cooling in Roswell’s long, muggy summers, which account for most of your HVAC energy use. It’s not the right answer for every home, especially if you prefer the hotter air of a gas furnace. We’ll run the numbers with you, explain the rebates, and give you a written price for either path. Call (762) 240-5599 for an exact quote.
Call Cold Harbour Heating and Air Marietta for Furnace Repair in Roswell
If your furnace is down in Roswell, don’t wait. Call (762) 240-5599 and a live person will answer, day or night. You’ll get a straight answer, a firm arrival window, and a written price before any work begins. Every repair comes with the 365-Day Done Right Promise: if it fails within a full year, we come back and make it right at no charge. No arguing, no fine print. That’s the guarantee, in writing, every time. Serving Roswell from our metro Atlanta dispatch office, with technicians who know this city’s homes and the specific problems they develop.
Written by Victor Mancini, Owner at Cold Harbour Heating and Air Marietta, serving Roswell since 2003.