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.
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AfterFast, Reliable Furnace Repair Across Dunwoody
When your furnace quits on a cold Dunwoody night, you need a straight answer and a fast fix, not a sales pitch. Most furnace repairs in Dunwoody run $150 – $700 depending on the failed part, and our techs carry the common replacement components on the truck so most jobs are done in a single visit. We know the ranch homes off Chamblee Dunwoody Road, the split-levels near Georgetown, and the tight crawlspaces along Mount Vernon Road because we work on them every week. Call (361) 306-9515 and a live person answers, 24/7. No voicemail queue, no callback window.
Why Dalton Heating & Air Is Dunwoody’s Preferred Furnace Repair Company
Dalton Heating & Air operates under The Garrison Standard, a set of rules our techs have followed since 2003. The short version: we arrive inside the stated window, put the price in writing before any work starts, do the job by the book, leave the site clean, and stand behind the repair for a full year. That written guarantee is not an upsell or an add-on. It comes with every furnace repair we do in Dunwoody.
When you book a call, you know who is coming. Our techs are background-checked, uniformed, and factory-trained on nine major brands, including Goodman, Rheem, and York equipment that shows up constantly in Dunwoody’s older homes. Marco Benitez leads our team and holds every tech to The Garrison Code on each call. If a repair fails within the guarantee period, we return at no charge. That is the 365-Day Done Right Promise, and it applies to every job.
Dispatch for Dunwoody runs through our Atlanta office, but the crews serving this area live and work in the north metro. We know the difference between a no-heat call in a 1970s split-level near Dunwoody Village and a newer build over by Perimeter Center, and that local context changes how we diagnose.
Furnace Tune Up in Dunwoody
Furnace Tune Up in Dunwoody runs $80 – $200 and is the cheapest insurance you can buy against a mid-January breakdown. Dunwoody homes built in the 1960s through 1980s are heavy on original single-stage furnaces, many of them 20-plus years old. A tune-up catches failing capacitors, dirty flame sensors, and cracked heat exchangers before they strand you on a 28-degree night.
Every tune-up includes a written report of what we actually found, not a verbal summary. Our techs are not paid on what they sell, so the report tells you what is wearing, what is fine, and what can wait. The price is in writing before the visit. No surprises.
What We Check on Every Tune-Up
We test gas pressure at the manifold, check the heat exchanger for cracks with a combustion analyzer, measure temperature rise across the system, and inspect the blower motor amp draw against the nameplate rating. On Dunwoody’s older furnaces, that amp draw check matters more than most homeowners realize. Undersized returns in 1970s split-levels force the blower to work harder every cycle, which shortens motor life and spikes electric bills.
We also inspect the flue for proper draft, clean the flame sensor, and verify the thermostat is reading accurately. Power flickers from Georgia ice storms can drift a thermostat’s calibration, and homeowners read that as a furnace failure when the equipment is actually fine.
Emergency Furnace Repair in Dunwoody
Emergency Furnace Repair in Dunwoody means the same pricing structure as scheduled work, with faster dispatch. Most emergency repairs fall in the $150 – $700 range, and you will still get a written price before we touch anything. When the temperature drops into the teens and your furnace will not light, this is a health and safety issue, not a scheduling inconvenience. We treat it that way.
Our emergency calls in Dunwoody cluster around the same failure modes every winter: dead capacitors on 20-year-old blowers, ignitors that finally crack, and gas valves that stick after sitting idle through a mild fall. We stock those parts for the brands common in this area, including Rheem, Goodman, and York.
Same-Day Emergency Response
We run emergency calls to Dunwoody neighborhoods seven days a week, including nights and weekends. A live person answers the phone at 2 a.m., takes your address, and gets a tech rolling. Response time to most Dunwoody zip codes runs under two hours for emergency calls, traffic on I-285 permitting.
When a Furnace Needs Immediate Shutdown
If you smell gas, leave the house and call your gas utility first, then call us from outside. A cracked heat exchanger is less obvious but just as serious, because it can put carbon monoxide into your living space. If your carbon monoxide detector is sounding, shut the furnace down at the switch and call us. Do not keep running a furnace that is tripping the rollout switch or producing a smell like hot metal or exhaust. Those are signs the heat exchanger has failed, and the furnace should not run again until a tech has inspected it.
Trusted Brands We Service in Dunwoody
Our techs are factory-trained to service nine major residential HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Dunwoody, we see a lot of Goodman and York equipment from the 1990s and early 2000s, plus a solid number of Rheem units in the subdivision homes built during the 1970s expansion around Dunwoody Village. We keep common replacement parts stocked for those brands locally, which means fewer return trips and faster repairs for homeowners in 30338 and 30346. Whether you need a blower motor for a 1998 York or an ignitor for a Goodman from 2005, we can usually complete the repair in one visit. If you’re facing a longer Furnace Repair decision on an older system, we walk you through the numbers honestly.
Common Furnace Repair Problems We See in Dunwoody Homes
- Failed capacitors and blower motors on original equipment. Dunwoody’s 1960s – 1980s ranch and split-level homes often run 20-plus-year-old furnaces with blowers that have never been replaced. Undersized return ducts on split-levels make those motors pull high amps every cycle, and eventually the capacitor or motor gives out.
- Cracked heat exchangers that still “run.” A furnace with a cracked heat exchanger will often light and heat the house while quietly leaking combustion gases. This is especially common on first-generation high-efficiency units installed in the 1980s, where tight crawlspace ductwork puts extra stress on the exchanger.
- Thermostat calibration drift after ice storms. Georgia ice storms bring power flickers, and power flickers can shift a thermostat’s calibration. Homeowners call us thinking the furnace is dead, when the actual problem is a thermostat reading 74 when the room is 68.
- Ignitor failures on older gas furnaces. Hot surface ignitors crack with age, and on a 25-year-old furnace, that is a common no-heat cause. The good news: ignitor replacement is usually a $200 – $350 repair in Dunwoody, and we stock them for the brands most common here.
Pricing for Furnace Repair in Dunwoody, GA
Here is what furnace work actually costs in Dunwoody right now, based on the calls we run every week:
| Service | Typical Dunwoody Price Range |
|---|---|
| Furnace Repair | $150 – $700 |
| Furnace Tune Up | $80 – $200 |
| Furnace Replacement (load-calculated) | $3,500 – $7,500 |
What moves a repair from the low end to the high end is the part. A flame sensor cleaning or a capacitor swap is quick and inexpensive. A gas valve or a blower motor costs more. A cracked heat exchanger changes the conversation entirely, and that is where honest guidance matters. On a 22-year-old furnace in a Dunwoody ranch with original ductwork, we will show you the repair number, the replacement number, and let you decide. Free estimates. Written prices. Call (361) 306-9515 and we will give you an exact quote before any work begins.
We Also Serve Cities Near Dunwoody
Our technicians handle furnace repair across the north metro, including Atlanta, South Fulton, Sandy Springs, and Roswell. If you live just outside Dunwoody, the same written pricing, the same guarantee, and the same live-answer phone line apply.
Serving Dunwoody, GA - Our Local Coverage Area
We’re based in the Dunwoody 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 Dunwoody
The answer depends on the heat exchanger condition and a load calculation, not the age alone. A 22-year-old furnace with a cracked heat exchanger should be replaced, because the replacement part plus labor often exceeds half the cost of a new system. But if the heat exchanger is intact and the repair is a $200 ignitor or a $350 blower capacitor, repairing buys you more winters. Where Dunwoody’s housing stock makes this decision different is the ductwork. Many 1960s – 1980s homes have returns sized for far less insulation than they now have, so a replacement decision should start with a load calculation, not the old furnace’s tonnage label. Call (361) 306-9515 and we will run the numbers with you, no charge for the estimate.
Short-cycling means the furnace turns on, runs a few minutes, and shuts off before the house reaches temperature. In Dunwoody’s older split-levels, the most common cause is an oversized furnace paired with undersized returns, which trips the high-limit switch. It can also be a dirty flame sensor or a thermostat reading incorrectly after a power flicker. Either way, it is not normal, and it is worth a look before it becomes a full no-heat call. A tune-up in the $80 – $200 range usually catches the cause.
SEER2 is a cooling efficiency rating, so it applies to the AC side of the system, not the furnace itself. Furnace efficiency is measured in AFUE. But the two are connected if you have a combined system, because replacing a furnace without checking the ductwork can leave a high-efficiency unit choking on undersized returns. That is a big deal in Dunwoody’s older homes, where original duct sizing was based on much lower insulation levels. A proper load calculation shows whether the ductwork can support the new equipment before you spend the money. Call (361) 306-9515 for a straight answer on your system.
Yes. We are factory-trained on nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Dunwoody, we service a lot of Goodman, York, and Rheem equipment from the 1990s and 2000s, and we stock common parts for those brands locally. That means faster repairs and fewer return visits for homeowners in the 30338 and 30346 zip codes.
A real tune-up includes a combustion analysis, heat exchanger inspection, gas pressure check, temperature rise measurement, blower motor amp draw test, flame sensor cleaning, flue draft check, and thermostat calibration. That is what our $80 – $200 tune-up covers in Dunwoody, and you get a written report of every finding. If a tech shows up and just changes the filter, that is not a tune-up. Call (361) 306-9515 and we will do it properly.
Call Dalton Heating & Air for Furnace Repair in Dunwoody
When your furnace goes down, you want a price in writing, a tech who shows up on time, and a repair that holds. That is what we deliver, and it is guaranteed for a full year. If the repair fails in that time, we come back at no charge. That is the 365-Day Done Right Promise, and it applies to every call we run in Dunwoody.
Call (361) 306-9515 for a free estimate. A live person answers, 24 hours a day, seven days a week. We will get a tech to your Dunwoody home fast, put the price in writing before any work begins, and leave the site clean.
Written by Marco Benitez, Owner at Dalton Heating & Air, serving Dunwoody, GA.