Seasonal 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.
Before
After
Before
After
Before
AfterFast, Reliable Furnace Repair Across Johns Creek
Furnace repair in Johns Creek typically runs $150 – $700, and most calls are handled same day when we have a tech in the area. The real question on a cold Johns Creek morning isn’t just what’s wrong, it’s whether the fix will hold. We tell you the price in writing before any work starts, and that price doesn’t move. Call (361) 306-9515 and you’ll get a live person, 24 hours a day, not a voicemail queue.
Most of the furnaces we see in Johns Creek sit in two-story homes built from the late 1980s through the 2000s. That matters because a lot of those systems were never sized to the actual house. We’ll get into what that means below, because it drives repair decisions more than most homeowners realize.
Why Dalton Heating & Air Is Johns Creek’s Preferred Furnace Repair Company
We arrive inside the window we give you, in a marked truck, with a background-checked, uniformed tech. That’s not a selling point, it’s The Garrison Code, the operating standard we’ve worked under since 2003 as a Garrison Partners company. Every repair gets a written guarantee for a full year. If the repair fails inside that year, we come back at no charge. No fine print, no prorated nonsense.
Dispatch for our Johns Creek calls is coordinated from our Atlanta office, but crews are local to the area and know the housing stock. We service all nine major residential HVAC brands, including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. If your furnace is 20 years old and limping along, we’ll tell you straight whether a $350 repair makes sense or whether you’re borrowing against a replacement you’ll need inside 18 months anyway.
Boiler Repair in Johns Creek
Boiler repair in Johns Creek runs the same core range as our other furnace work: $150 – $700 depending on the part. A circulator pump, an expansion tank, a pressure relief valve, a zone valve that won’t open: those are the usual suspects. Boilers are less common in this area than forced-air furnaces, but they do show up in the older custom homes off McGinnis Ferry Road and in some newer builds that wanted hydronic heat. When a boiler goes down in a Johns Creek winter, you lose all heat to the whole house at once, so we treat these as priority calls.
Circulator and Zone Valve Work
A circulator pump on a boiler usually fails after 10 – 15 years of service. Symptoms are uneven heat, banging in the pipes, or a boiler that short-cycles because the water isn’t moving. Zone valves fail more quietly, and you’ll notice one room or one floor that won’t warm up even while the rest of the house is fine.
Diagnostics on Older Boiler Systems
If the boiler is over 20 years old and leaks around the heat exchanger or the expansion tank, replacement is usually the right call. We’ll show you the condition of the unit and give you a written repair price and a replacement price, side by side, so you’re deciding on facts, not a sales pitch.
Gas Furnace Repair in Johns Creek
Gas furnace repair in Johns Creek is the bulk of what our Furnace Repair team handles from November through February. The most common failures are ignitors, flame sensors, gas valves, and blower motors. A direct-ignition gas furnace that won’t light on a 28-degree night is a genuine emergency, and we don’t make you wait until morning for someone to pick up the phone. Typical gas furnace repair costs land between $150 and $700, with the lower end covering things like ignitor or flame sensor replacement, and the upper end covering blower motors, control boards, or gas valve work.
Ignitor and Flame Sensor Replacement
If your furnace tries to start but never lights, or lights for a few seconds and then shuts off, you’re usually looking at a failed ignitor or a dirty flame sensor. This is a straightforward repair: the part is replaced or cleaned, we check the system’s cycle, and you have heat within the hour in most cases. We stock common ignitor and sensor parts in our Johns Creek trucks specifically because these fail so often in cold snaps.
Gas Valve and Control Board Diagnostics
Gas valve failures are less common but more expensive. The valve is the component that opens and closes the gas supply to the burners. When it fails, the furnace won’t fire at all, or it fires intermittently and trips the system’s safety lockout. We never recommend attempting to test or replace a gas valve yourself. A leaking gas valve or an improperly seated gas connection can put your household at risk of carbon monoxide exposure or fire. This is a repair for a trained professional with a combustion analyzer, full stop. We test every gas furnace for carbon monoxide during a repair call, because a heat exchanger that’s starting to crack will show up in the readings.
Trusted Brands We Service in Johns Creek
We’re factory-trained on all nine major residential HVAC brands, but the most common furnaces we service in Johns Creek are Carrier, Trane, Goodman, and Rheem. That’s not a ranking, it’s just what’s in the walls here. We keep replacement ignitors, flame sensors, capacitors, and blower motor modules stocked on our local trucks for these brands, which means a faster turnaround on a Johns Creek cold morning. If you have a York or Daikin furnace, we service those too, and we can usually have any non-stocked part in hand within a day or two from our supplier network.
Common Furnace Repair Problems We See in Johns Creek Homes
- Short-cycling in oversized two-story homes. If the furnace fires up, runs for three or four minutes, shuts off, and repeats, the furnace was likely sized for square footage instead of a real load calculation. This shortens the life of the blower motor and costs you more in gas than it should.
- Failed capacitors and blower motors on older Carrier and Trane units. Johns Creek’s humid shoulder seasons mean furnaces run longer during the swing months, which stresses blower motors and electrical components. We see capacitors die most often in October and March.
- Cracked heat exchangers in crawlspace installations. A furnace in a ventilated crawlspace pulls in damp, cold air. Over 15 – 20 years, the heat exchanger takes the abuse and can crack. This is a safety issue, not just a performance issue, and we’ll show you the crack on camera before any replacement is discussed.
- High static pressure from undersized ductwork. When an oversized furnace pushes against ducts that were never redesigned, the static pressure climbs and the blower works itself to death. We measure static pressure as part of every no-heat diagnostic, because it’s usually the root cause behind repeated blower failures.
Pricing for Furnace Repair in Johns Creek, GA
Here’s what furnace repair actually costs in Johns Creek right now. These are the prices you’ll see in writing before any work begins, and they don’t change once the work is done.
| Service | Price Range |
|---|---|
| Gas Furnace Repair | $150 – $700 |
| Boiler Repair | $150 – $700 |
| Furnace Tune-Up | $80 – $200 |
What moves a repair within that range is the part. An ignitor or flame sensor is on the low end. A blower motor or control board is on the high end. A gas valve falls somewhere in the middle. The $150 starting point is a real diagnostic and a small repair, not a fee you pay before we even look at the unit. Estimates are free, and every repair price is in writing before we touch a single screw.
We Also Serve Cities Near Johns Creek
Our Johns Creek service area extends to the surrounding metro. We handle furnace repair calls in Atlanta, South Fulton, Sandy Springs, and Roswell, with the same written pricing and the same one-year guarantee on every repair.
Serving Johns Creek, GA - Our Local Coverage Area
We’re based in the Johns Creek 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 Johns Creek
An oversized furnace short-cycles: it runs for a few minutes, shuts off, and repeats before the house feels even. You’ll also see higher gas bills, uneven heat between floors, and a blower motor that fails years before it should. The only way to know for sure is a static pressure test and a load calculation, which we perform as part of our diagnostics. Call (361) 306-9515 and we’ll tell you in plain English whether your furnace is sized right for your actual house, not just your square footage.
Yes. A cracked heat exchanger can leak carbon monoxide into your living space, and a crawlspace furnace is often out of sight and out of mind until a CO detector goes off. If you have a furnace that’s 15 years or older and you’ve never had the heat exchanger inspected, schedule a tune-up before the next cold snap. We test CO levels on every furnace call, not just the ones where the customer asks.
SEER2 is the updated efficiency rating standard that went into effect for cooling equipment in 2023, but it matters here because it affects the combined efficiency of your furnace and AC system. When you’re deciding whether to repair a 15-year-old furnace in Johns Creek, the calculation isn’t just the repair cost. It’s how much more you’ll spend in gas and electricity over the next five years running an old system versus a new one. We’ll walk you through the actual utility-bill math for your house, not a generic sales chart.
Repair if the furnace is under 12 years old and the quoted fix is under $700. Replace if the heat exchanger is cracked, the unit is over 15 years old, or the repair is over half the cost of a new system. The honest answer depends on the age, the condition of the heat exchanger, and what a right-sized replacement would cost you in real dollars. We give you both numbers in writing so the decision is yours, not ours. Call (361) 306-9515 for an exact quote.
Once a year, ideally in the fall before the first hard freeze. Johns Creek’s humid shoulder seasons mean your furnace works harder during the swing months, and a tune-up runs $80 – $200. That’s less than half of what a failed blower motor costs to replace, and it catches heat exchanger cracks, gas valve leaks, and static pressure problems before they leave you without heat. Our techs aren’t paid on what they sell, so the tune-up report tells you what’s actually wrong, not what’s easy to upsell.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Johns Creek since 2003.