Furnace costsFurnace installation & replacement in Atlanta, GA Serving Atlanta, Decatur & nearby areas in Georgia
Replace the furnace, not the problem.
- Free in-home quote
- High-efficiency gas furnaces
- Right-sized, not oversized
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We answer Mon–Fri 8am–6pm, Sat 10am–4pm. Written price before any work starts.
Google rating4.8★★★★★100+ Google reviews
LicenseGA CN211042Conditioned air contractor
OwnershipLocally ownedIn Atlanta since 2014
EstimatesFreeOn a new system
ResponseOften same-dayMon–Fri 8am–6pm
Furnace Installation & Replacement in Atlanta, GA
When should a furnace be replaced?
A gas furnace in Atlanta runs a short but demanding season, and after 15 to 20 years it loses ground. Repairs stack up, the gas bill climbs, and an older furnace turns less of its fuel into actual heat. Worse, an aging heat exchanger can crack and leak carbon monoxide. Indoor Experts Heating & Air Conditioning, an Atlanta Trane Comfort Specialist, sizes and installs high-efficiency Trane and RunTru furnaces built to heat your home for years, so you buy once instead of paying to keep an old furnace limping.
$0in-home estimateprovided for qualifying furnace replacement appointments
15to 20 yearsis a common service-life range for properly maintained gas furnaces
80%+AFUE optionsavailable based on the Trane or RunTru system selected
10-yearparts coveragemay apply after eligible Trane equipment is registered
FreeIn-home estimateOn a new system
01/Warning signs
Signs it's time for a new furnace
Not every aging furnace is worth another repair. When the numbers and the safety stop adding up, a new furnace is the move that saves money over the next decade. Here is what tells our local heating technicians a furnace is near the end.
01Past service life
It's past 15 to 20 years old
A furnace this old has lost efficiency and is one major part away from a bill that rivals a new one.
02Safety, do not wait
The heat exchanger is cracked
This is a carbon monoxide risk, and it is the one furnace failure we will not repair around.
03Repeat failures
Repairs are stacking up
Two or three fixes in a couple of winters means you are funding a furnace that will keep failing.
04Low efficiency
Your gas bills keep climbing
An old, low-efficiency furnace burns more fuel for the same warmth, and you feel it every month.
05Undersized or worn
Some rooms never get warm
A furnace that can't heat the house evenly is often undersized, worn out, or both.
Not sure whether to repair or replace? Tell us what your furnace is doing and you get a straight answer, not a sales pitch. If a fix still makes sense, we will point you to Furnace Repair. To protect the furnace you have, ask about Furnace Maintenance. And if you want heat that also cools all summer, we will walk you through a Heat Pump.
02/Trane
Why get a Trane furnace installation
A furnace lives or dies by its heat exchanger, the sealed chamber that keeps combustion gas away from the air moving through your ducts. Trane builds its own, and a Trane high-efficiency furnace runs 90%+ AFUE against the roughly 80% a standard-efficiency model turns into heat, so less gas gets burned and vented outside for the same warm house.
We install Trane furnaces as a Trane Comfort Specialist, a title Trane reviews yearly against our training record and customer ratings rather than something we buy once and keep. That matters most at startup: a furnace vented and set to Trane's own spec is the difference between the 90%+ AFUE printed on the unit and a furnace that runs hotter, louder, or shorter-lived than it should. Budget-minded? RunTru is the same Trane engineering at a lower price, and we will tell you honestly which one your house needs.
Standard or High-Efficiency, Honestly Weighed
Which furnace efficiency fits you?
Two efficiency levels cover most Atlanta homes, and the right one depends on how long you plan to stay and how much you want to save each winter versus how much you want to spend now. We help you weigh it honestly and never push the top model when a simpler one fits.
| Standard-efficiency furnace (around 80% AFUE) | High-efficiency furnace (90%+ AFUE) | |
|---|---|---|
| Best for | A tighter budget or a home you may not keep long | Homeowners staying put who want the lowest gas bills |
| The trade | Lower price now, more gas used each winter | Costs more up front, turns more fuel into heat |
| Comfort | Reliable, steady warmth for Atlanta's short season | Steadier heat and quieter running over a long stay |
| The bottom line | A sound, lower-cost furnace done right | Pays you back on the bill over the years you own it |
Done Right Means It Heats and Vents Safely
What makes a furnace install last
We size the furnace to your home
A furnace only runs efficiently and lasts if it is sized right. We run a heating load calculation on your square footage, insulation, and layout instead of matching the old unit, so you avoid a furnace that short-cycles or leaves rooms cold.
A Trane Comfort Specialist install, done to spec
This title is earned, not bought. Trane reviews our training and customer ratings every year and holds us to a set score to keep it. So your furnace is installed and vented the way Trane engineered it to run.
The right furnace, priced in writing
We recommend the furnace your home needs, not the one that pads the invoice, and you approve a written price before we order a thing. The in-home estimate is free, the number holds, and no pressure comes with it.
03/The visit
From estimate to first warm night
Here is the path from the first visit to a warm house.
01
Free in-home estimate
A technician measures the home, checks your ductwork and gas line, and runs the heating load calculation, so you know what your home needs before any price is discussed.
02
Your options, in writing
We lay out the furnace choices, efficiency and size included, plus financing if you want it. You approve a written price, and nothing is ordered until you do.
03
A safe, clean install
Our in-house crew removes the old furnace, sets the new one, and connects the gas, venting, and electrical to code. Most furnace swaps finish in a single day.
04
Startup and safety check
We fire the furnace, confirm the flame and airflow, and test for safe combustion. Then we show you how it runs and walk through the warranty.
Warm house sooner, not later
Know the timeline up front
When your furnace is failing heading into winter, you don't want a quote next week and an install the week after. Reach out and you get a real timeline, fast, and an honest word on how soon we can have new heat running in your home.
How soon can you install?
Most furnace replacements go in within days of your approval, often a single working day on site. If the ductwork or venting needs work, we tell you up front so the schedule holds no surprises.
Start with a free quote.
Call (404) 913-5802 for the fastest answer, or book online in about a minute. Tell us it is a replacement so we bring the right estimate to your door.
Where we work
Which Atlanta areas we cover
Indoor Experts is based in Atlanta and installs across the city and the metro area pressed against it, so the crew that quotes your furnace is the crew that sets it. You get the same free estimate and the same written price, whichever neighborhood you are in. Decatur is our regular stop just outside the line, a short hop beyond East Atlanta.
Not certain you are in range? Call, and we will confirm before we schedule.
(404) 913-5802
Based in Atlanta · the city and its close-in metro
Indoor ExpertsLicensed · GA CN211042
Get directions
Indoor Experts Heating & Air Conditioning
390 Stovall St SE, Suite 1402, Atlanta, GA 30316
Areas we serve- Midtown
- Poncey-Highland
- Candler Park
- Druid Hills
- Inman Park
- Grant Park
- East Atlanta Village
- Ormewood Park
- Old Fourth Ward
- Kirkwood
- Decatur
From our Google profile
Reviews
⭐ 4.8 · 100+ Google reviews from Atlanta homeowners talking about furnace installs and replacements we did, not paid testimonials.
-
5 out of 5 stars
furnace installation and replacementWe’ve had unfortunate luck as our downstairs AC unit has had issues on multiple occasions where it stopped working and it’s only 4 years old. However, [the owner] and his staff have always promptly evaluated every issue and fixed so quickly. They are very professional and thorough while still getting the job done quickly. This company is fair with their pricing and trustworthy…
Lydia KanoyGoogle reviewRead it on Google -
5 out of 5 stars
furnace installation and replacementI had a really great experience with Indoor Experts. My A/C unit was not cooling the house very well. I called Indoor Experts because of their great online reviews. I met with [the owner] who quickly diagnosed the issue and proposed the solution. The repair cost was very reasonable. My A/C is working great now, and I would use this company again in a heart beat…
Zachary KozuchGoogle reviewRead it on Google -
5 out of 5 stars
furnace installation and replacementGreat customer service. Our unit is fairly new, so I was surprised when it died last night. I was able to call and get an appointment this evening, which was wonderful. [the owner] took one quick look at the unit, knew exactly how to fix it, and did so right away. The pricing was also very reasonable, and he didn't try to up sell anything (I can't stand pushy sales people)…
Tabitha CareyGoogle reviewRead it on Google -
5 out of 5 stars
furnace installation and replacementI would absolutely recommend Indoor Experts and [the owner] to any and everyone. I called them after the first HVAC company did not fix my problem. [the owner] and Savon were here until 11:30pm working on my unit to be sure that we had AC over night…
Jessica BradyGoogle reviewRead it on Google -
5 out of 5 stars
furnace installation and replacementThe Indoor Experts team is top-notch. Everyone involved from the call agent to the technician was extremely professional and helped me get my AC fixed as soon as they could. A special thank you and appreciation to their technician, [the owner]. He diagnosed the problem quickly and fixed my AC issue within a couple of hours. He was clear in communicating the issue and how he was going to fix it…
Tyler WoeiGoogle reviewRead it on Google -
5 out of 5 stars
furnace installation and replacementHonest, fair, efficient & effective. Identified and fixed my problem with an old AC unit in less than an hour and at a much lower cost than I anticipated. Highly recommended! My experience was 100% positive.
Chase AndersonGoogle reviewRead it on Google
04/Questions
Furnace installation FAQs
Still deciding between a repair and a new furnace? We'd rather answer than have you guess.
01How long does a furnace install take?
Most replacements finish in a single working day. If your ductwork or venting needs rework, we tell you up front and plan the time for it.
02Do you charge for a replacement estimate?
No. In-home estimates on replacements are free. A repair diagnostic gets a written price of its own, but quoting a new furnace never costs you anything.
03Should I get standard or high-efficiency?
Depends how long you will stay and your budget. High-efficiency costs more up front and turns more gas into heat, saving you each winter.
04What size furnace does my home need?
We run a heating load calculation on your home, not a guess off the old unit, so the furnace is sized to heat evenly without short-cycling.
05Can financing cover a new furnace?
Yes, through Service Finance with no fees to you, so a full replacement fits your budget without a heavy upfront hit.
