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AfterFurnace Repair in Alpharetta, GA
Furnace repair in Alpharetta typically costs between $150 and $450 for most common fixes, depending on the part that failed and how long it takes to get to it. Dalton Heating & Air Alpharetta gets the job done same-day in most cases, with a written price before any work starts and a full-year written guarantee on the repair. If your furnace is blowing cold air, short-cycling, or making sounds it should not make, call (229) 537-2086 and a live person answers, day or night.
This page covers what furnace repair actually involves here in Alpharetta, what it costs, and how our process works from the first call to the final test. If you’re trying to decide whether to repair or replace your heating system, start with the repair cost conversation first – in most cases a repair is the right call, and we’ll tell you straight if it isn’t.
We also handle full-system Heating & Furnace work, from seasonal tune-ups to complete furnace installations, so the same crew that fixes your furnace today can keep it running for the next decade.
When You Need Furnace Repair
Most homeowners in Alpharetta call us after one of these shows up. None of them are problems you should ignore, because a furnace that’s misbehaving in January is a furnace that fails in February – and February nights here drop below freezing often enough that you don’t want to test it.
- Cold air blowing from the vents. This usually points to a failed ignitor, a dirty flame sensor, or a gas valve that’s not opening. The burner fires, but the heat never reaches the air moving through your ducts.
- Short-cycling – the furnace kicks on, runs a few minutes, shuts off. Common in Alpharetta homes with older thermostats or clogged filters, but it can also signal an overheating heat exchanger, which is serious. We check it every time.
- Rattling, banging, or whistling noises. A banging sound when the burners light often means delayed ignition, which wastes gas and can crack a heat exchanger over time. A rattling blower motor usually means worn bearings.
- Higher-than-normal gas bills with no change in usage. In Milton and Crabapple, where homes are bigger and ducts run long, an underperforming furnace works harder than it should. A tune-up plus a minor repair usually brings the bill back down.
- Furnace won’t stay lit or won’t light at all. This is often a dirty flame sensor – a thin metal rod that tells the gas valve it’s safe to keep burning. We clean or replace it in about an hour on most units.
- Yellow or flickering burner flame. A healthy gas furnace burns blue. Yellow flame means incomplete combustion, which puts carbon monoxide into your home’s air. If you see this, call us immediately.
Our Furnace Repair Process
Here’s exactly what happens when you call Dalton Heating & Air Alpharetta for furnace repair. No surprises, no upsell games – this is the process we’ve used since 2003, and it’s how every Garrison Partners location operates under The Garrison Code.
- You call (229) 537-2086 and talk to a live person. Not a voicemail tree, not a callback window. We take your information, ask what the furnace is doing, and give you a two-hour arrival window that day.
- We arrive on time, in uniform, with a background-checked technician. You’ll know the technician’s name before they show up. They’ll wear shoe covers inside your home and lay down a drop cloth before opening the furnace.
- The technician diagnoses the problem and writes down the price. Before any work happens, you get a written quote for the exact repair – part, labor, and tax. The price doesn’t change at the door. If you decide not to do the repair, that’s your call, and the diagnostic fee is all you pay.
- We do the repair the same visit, in most cases. Our trucks carry common parts for Lennox, Goodman, Rheem, and York furnaces, among others, so we usually don’t have to order anything. If a part is uncommon, we’ll tell you the timeline before any work starts.
- We test the furnace through a full heating cycle. We don’t just fire it up and leave. The technician verifies the burner lights cleanly, the blower moves air properly, and the thermostat is calling for heat correctly.
- You get the written guarantee, on the spot. Every repair comes with a 365-Day Done Right Promise: if the repair fails in the first year, we return and fix it at no charge. No fine print, no exclusions that matter.
Furnace Repair Pricing in Alpharetta
Here’s what furnace repair costs in Alpharetta, based on what we actually see across the area – from Windward and Crabapple to downtown and the neighborhoods along Highway 9.
| Repair Type | Typical Cost Range | Notes |
|---|---|---|
| Diagnostic fee (credited to repair if you proceed) | $89 – $129 | Waived on most repairs when you approve the work. |
| Flame sensor cleaning or replacement | $120 – $190 | Most common repair we do, especially on Goodman and Rheem furnaces. |
| Ignitor replacement | $180 – $300 | Hot surface ignitors fail every 4-7 years on average. Common on Lennox and York models. |
| Gas valve replacement | $250 – $450 | Includes gas pressure testing and leak check before we leave. |
| Blower motor replacement | $350 – $650 | Price varies by unit age and motor type. Includes full system airflow check. |
| Thermostat replacement | $90 – $250 | We carry basic and smart thermostats on the truck. |
| Heat exchanger replacement (if furnace is under warranty) | $400 – $900 | Labor cost varies; if the exchanger is aged out, we’ll tell you if replacement makes more sense. |
These are real ranges, not guesses. The variables are the part itself, how long it takes to access it, and whether your furnace is a common model or something older. Alpharetta has a lot of homes built in the 1990s and 2000s, and many of those furnaces are hitting the age where ignitors and gas valves start going.
Every estimate is written and in your hand before we start. You’ll never get a call from the tech saying “it’s going to be more.” The price is the price. And if we can’t fix it that day, you don’t pay for the part we didn’t install.
For a free estimate on your specific furnace, call (229) 537-2086. We’ll tell you over the phone what to expect before anyone even shows up.
Common Furnace Problems We Fix in Alpharetta
We service all nine major residential HVAC brands – Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard – and our technicians are factory-trained on each one. Here’s what we see most often in this area, by model type.
Lennox and York Furnace Repairs
Lennox and York units are common in Alpharetta’s newer subdivisions, where builders installed mid-efficiency gas furnaces in the 2005-2015 building boom. We regularly replace ignitors and flame sensors on these models, and the occasional draft inducer motor. The good news: parts are widely available, and we usually have them on the truck.
Goodman and Rheem Furnace Repairs
Goodman and Rheem furnaces are workhorses, but they’re not immune to wear. On older Goodman units, we see blower motor failures more often than anything else. On Rheem models, it’s usually a control board or a pressure switch that’s reading wrong. Both are straightforward fixes, and the written guarantee covers them the same as any other repair.
Older Furnaces (15+ Years)
If your furnace was installed before 2010, it’s worth having us check the heat exchanger during any repair visit. A cracked heat exchanger leaks carbon monoxide into your home’s air – it’s the one repair where we’ll sometimes tell you to replace the furnace instead of fixing it. We’ll show you exactly what we found, on camera if you want, and let you decide with real information. No scare tactics.
Safety When Your Furnace Is Acting Up
Natural gas furnaces are safe when they’re maintained, but there are two situations where you should shut the unit off and call us right away: if you smell gas anywhere near the furnace or in the house, or if your carbon monoxide detector goes off. In the first case, don’t flip any light switches or use your phone inside – leave the house and call the gas company first, then call us to handle the furnace repair once the gas is shut off.
If your furnace is blowing cold air or short-cycling, that’s inconvenient but not dangerous. You can check the obvious things: the thermostat is set to “heat,” the filter isn’t caked with dust, and the furnace switch on the wall (it looks like a light switch) is in the on position. If those check out, call us. Don’t open the furnace cabinet and start testing wiring – the gas valve, ignitor, and heat exchanger are all inside and all of them are better handled by a trained technician.
FAQs – Furnace Repair
How much does furnace repair cost in Alpharetta?
Most furnace repairs in Alpharetta run between $150 and $450, though that range widens for larger items like blower motors. A simple flame sensor cleaning typically runs $120 to $190, while a gas valve replacement usually lands between $250 and $450. Get an exact written quote before any work starts by calling (229) 537-2086 – the diagnostic fee is credited toward your repair if you approve it.
Can you fix my furnace the same day I call?
Most furnace repairs in Alpharetta are done the same day, because we stock common parts for Lennox, Goodman, Rheem, and York furnaces on every truck. If your repair needs a part that’s rare or model-specific, we’ll tell you the timeline before any work begins, and we won’t charge you for anything we haven’t installed. Call (229) 537-2086 in the morning and you’ll usually have heat by the afternoon.
Is it cheaper to repair my furnace or replace it?
The rule of thumb we tell Alpharetta homeowners: repair is cheaper if the fix is under $500 and the furnace is under 15 years old. At 15+ years, especially with a failing heat exchanger, replacement starts to make better financial sense. We’ll give you the real numbers for your specific unit – repair cost versus replacement cost, with your existing warranty factored in. One call to (229) 537-2086 gets you both numbers.
Does Dalton Heating & Air really guarantee furnace repairs in writing?
Yes, every repair from Dalton Heating & Air comes with a written 365-Day Done Right Promise. If the same part fails in the first year, we come back and fix it at no charge. It’s not a 30-day window and it’s not a verbal promise – it’s printed on your invoice, and it’s part of The Garrison Standard every Garrison Partners location has followed since 2003.
Written by Marco Benitez, Owner at Dalton Heating & Air Alpharetta, serving Alpharetta.