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AfterHow Much Does Furnace Replacement Cost in Alpharetta?
A full furnace replacement in Alpharetta, GA typically costs between $3,800 and $7,600 in 2026, with most single-family homes landing in the $4,200 to $5,800 range for a mid-efficiency gas furnace with standard installation. High-efficiency models (90%+ AFUE) in larger homes push toward the upper end of that range. The final number depends on furnace size, brand, efficiency rating, and the condition of your existing ductwork and venting.
You’ll see plenty of national averages floating around, but Alpharetta has its own market conditions: a mix of 1980s – 2000s homes in neighborhoods like Windward, Crabapple, and Kimball Bridge, plus newer construction near Halcyon and Avalon. That housing stock means we’re often replacing furnaces that were installed when natural gas was cheaper and efficiency standards were looser. Here’s what we see on the ground, week to week.
Furnace Replacement Cost Breakdown (2026)
Here’s what you can expect to pay in Alpharetta for a complete furnace replacement, including equipment, labor, and standard installation. These numbers reflect the local market through 2026 and are what our team at Meadowsweet Heating and Air uses as the basis for written estimates.
| Item | Cost Range | Notes |
|---|---|---|
| Mid-efficiency furnace (80% AFUE) | $2,100 – $3,200 | Equipment only; common in milder Georgia winters |
| High-efficiency furnace (90 – 96% AFUE) | $2,800 – $4,500 | Equipment only; qualifying models may be eligible for utility rebates |
| Variable-speed / modulating furnace | $3,800 – $5,600 | Equipment only; quietest operation, best humidity control |
| Standard installation labor | $1,200 – $2,000 | Direct replacement, existing gas line and electrical in place |
| Complex installation labor | $2,000 – $3,500 | New venting, gas line relocation, or ductwork modifications |
| Permits and inspection | $150 – $400 | Required by the City of Alpharetta for furnace replacement |
| Ductwork modifications | $300 – $1,800 | If existing ducts are undersized or mismatched |
| Old furnace removal and disposal | $75 – $200 | Most Alpharetta HVAC companies include this; confirm in your estimate |
A straightforward swap – same footprint, same fuel type, no duct changes – lands on the lower end. But we frequently encounter situations in older Alpharetta homes where the existing flue or gas line doesn’t meet current code. That’s not a scare tactic; it’s what the city inspection will flag if it isn’t addressed before the furnace goes in. We’d rather tell you before the job starts than have the inspector tell you after.
What Affects Furnace Replacement Pricing in Alpharetta
Six things move the needle on furnace replacement cost in this market. Here’s what we look at when we walk into a home in Alpharetta.
- Home size and furnace capacity. A 2,000-square-foot ranch in the Mid-Broadwell area needs a 60,000 – 80,000 BTU furnace. A 4,500-square-foot home in the Country Club of the South might need 100,000 – 120,000 BTUs. Bigger equipment costs more, full stop.
- Efficiency rating (AFUE). An 80% AFUE furnace costs less upfront but runs higher winter gas bills. A 96% AFUE two-stage unit costs more now and can cut gas use by 15 – 20% during Alpharetta’s colder months, which run from late November through February.
- Brand. Meadowsweet services nine brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Equipment pricing varies meaningfully among them – a Goodman 80% furnace runs roughly $800 – $1,200 less than a comparable Carrier for the same BTU output. We’ll show you the numbers for each option.
- Venting and gas line work. Alpharetta homes built before the mid-1990s often have metal flue pipes sized for older, less efficient furnaces. A high-efficiency unit with PVC sidewall venting may require new venting runs, which adds $400 – $1,200 depending on distance to an exterior wall.
- Ductwork condition. Crawlspace homes in older Alpharetta neighborhoods sometimes have leaky or crushed flex ducts. If your ducts are losing 25% of heated air before it reaches the bedroom, replacing the furnace alone won’t fix the comfort problem. We’ll tell you honestly if ducts need work, and line-item it separately.
- Time of year. Furnace replacements spike in November and December in Alpharetta. If your system is aging and you can plan the replacement for spring or early fall, you’ll have more scheduling flexibility and more time to compare written estimates without a cold house pressing the decision.
Is It Cheaper to Repair or Replace a Furnace in Alpharetta?
Furnace repair in Alpharetta runs $150 to $700 for most issues – a failed ignitor, a worn blower motor, a dirty flame sensor, a bad thermostat. The repair-versus-replace math gets clearer when you look at three things: the age of the furnace, the cost of the repair as a percentage of replacement cost, and the efficiency of the current unit.
If your furnace is under 12 years old and the repair is under $400, repair usually makes sense. If it’s over 15 years old and the repair is $600+, you’re likely better putting that money toward a new system. A cracked heat exchanger is the one exception: it’s a safety issue, not a repair decision, and a new furnace is almost always the right call. We’ll show you the failed part and explain the math before you commit to anything.
Gas Furnace vs. Electric Furnace vs. Heat Pump in Alpharetta
Most Alpharetta homes have natural gas service, and a gas furnace is still the most common replacement choice because it heats faster and costs less to run than electric resistance heat. But we’re seeing more homeowners in new-construction areas around Halcyon and Exit 11 ask about heat pumps and dual-fuel systems.
- Natural gas furnace: $3,800 – $7,600 installed. Lowest operating cost if your home already has a gas line. The obvious choice for most existing Alpharetta homes.
- Electric furnace: $3,200 – $5,800 installed. Cheaper equipment, higher monthly electric bills. Makes sense for homes without gas service, which is rare in Alpharetta.
- Heat pump (all-electric heating and cooling): $7,000 – $14,000 installed for a full system replacement. Efficient in Georgia’s moderate winters, but the upfront cost is higher than a gas furnace swap.
- Dual-fuel (heat pump + gas furnace backup): $9,000 – $16,000 installed. Best of both worlds, but the premium is steep. We typically recommend this only for larger homes with zoned systems.
How Long Does Furnace Replacement Take in Alpharetta?
Most furnace replacements take 4 to 8 hours, start to finish. A simple swap in a house with easy attic or crawlspace access and an existing gas line runs closer to half a day. Add venting modifications or ductwork work and you’re looking at a full day, sometimes a day and a half.
Here’s what a standard replacement day looks like with our crew, step by step.
- Arrival and home protection. Shoe covers go on at the door. Drop cloths cover the path from the entry to the mechanical room or attic access. We ask before moving anything in the work area.
- System shutdown and gas line lockout. The gas supply is shut at the furnace, electrical is disconnected at the breaker, and the old unit is prepared for removal.
- Old furnace removal. The furnace is disconnected from the flue, gas line, and ductwork, then removed. On a standard swap, this takes about an hour. We’ll haul it away – that’s included in the written price.
- New furnace placement and connection. The new unit is set, leveled, connected to gas and electrical, and sealed to the existing ductwork. Venting is connected and sealed per manufacturer spec and local code.
- Startup and combustion test. We fire the furnace, verify gas pressure, test for carbon monoxide, and confirm the temperature rise across the heat exchanger matches the equipment spec.
- Thermostat pairing and walkthrough. If you have a new thermostat, we pair it and walk you through the settings. We show you the filter location, explain the maintenance basics, and answer any questions.
- Cleanup and photo confirmation. Drop cloths come up, the work area is swept, and we send you a photo of the cleanup before we leave. That’s standard on every Meadowsweet job, not an upsell.
Homeowners in Alpharetta ask us all the time if they need to be home for the whole day. You don’t – most families go about their routine. But we’ll need access to the thermostat and the furnace area, and we’ll need to run the system at the end. If you have kids napping or a dog that gets anxious around strangers, let the office know when you book and we’ll work around the household schedule quietly.
Alpharetta Furnace Permit Requirements and Code Notes
The City of Alpharetta requires a mechanical permit for furnace replacement, and the final inspection is done by the city’s building department. Cost is typically $150 to $400 depending on the scope. A licensed contractor pulls the permit, and the inspection is scheduled after the install is complete. We handle the permit paperwork as part of the job – the line item is on your written estimate, so there’s no surprise fee at the end.
Two code notes specific to our area: high-efficiency furnaces (90%+ AFUE) can’t vent through the old metal flue pipe – they need PVC venting to an exterior wall or roof. And Alpharetta homes with furnaces in the attic or crawlspace need to meet clearance and access requirements that have tightened since many of these houses were built. If your current setup doesn’t meet code, we’ll flag it and include the correction in the estimate up front.
How to Save on Furnace Replacement in Alpharetta
Replacing a furnace is a big-ticket expense, but there are ways to keep the number manageable without cutting corners on safety or quality.
- Get a written estimate before any work starts. That’s non-negotiable at Meadowsweet. You should never hear a final price after the job is done. Our crew explains the price before the work, and the number on the written estimate is the number you pay.
- Replace in the off-season. March through October gives you more scheduling flexibility. Alpharetta HVAC companies run busy from November through January, and that demand can affect lead times.
- Check for utility rebates. Gas South and Georgia Natural Gas have offered rebates on high-efficiency furnace installations in recent years. We’ll tell you what’s current when we quote the job.
- Right-size, don’t oversize. A furnace that’s too big for your home costs more to buy and runs in short, inefficient cycles. We size equipment by load calculation, not by “this is what you had before.”
- Ask about the full scope, not just the unit. A low equipment price with $1,800 hidden in “installation extras” isn’t a deal. Our estimates line-item everything: equipment, labor, permit, venting, ductwork, removal, and disposal.
A free estimate is always available from Meadowsweet Heating and Air in Alpharetta. Call (478) 606-5046 and we’ll send a technician to measure, assess the existing system, and give you a written price – on paper, before anything is signed.
How to Choose the Right Furnace for Your Alpharetta Home
There’s no single “best” furnace. There’s the right furnace for your house, your budget, and the way your family uses the space. Here’s how we walk Alpharetta homeowners through the decision, in plain language.
Step 1: Figure out what you’re actually solving.
Are you replacing a furnace that failed, or one that’s running but getting old? If it failed in January, speed matters and we’ll prioritize same- or next-day installation. If it’s still running, we have time to compare efficiency levels, brands, and rebates. Either way, the conversation starts with your actual problem – cold rooms, high gas bills, loud operation, uneven heat – not with a sales script.
Step 2: Focus on size and efficiency before brand.
The two decisions that matter most are BTU capacity (how much heat your home needs) and AFUE efficiency (how much of the gas becomes heat). We size the furnace by running a load calculation that accounts for your home’s square footage, window orientation, insulation level, and ceiling height. An oversized furnace is a comfort problem; an undersized one is a cold-house problem on the coldest Alpharetta nights.
Step 3: Compare brands honestly.
We install and service Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. That’s nine families of equipment, and we don’t have a commission structure that pushes one brand over another. Goodman and Rheem are solid mid-range choices. Carrier, Trane, and Lennox are premium brands with strong warranty registrations. Bryant and American Standard are closely related to Carrier and Trane respectively, often with slightly different feature sets at slightly different price points. We’ll show you what the same-size furnace costs in two or three brands and let you choose.
Step 4: Read the warranty carefully.
Most furnace brands offer a 10-year parts warranty when you register the equipment online within 60 days of installation. If you skip registration, that warranty often drops to 5 years on parts. We register your equipment for you as part of the install, and we’ll walk you through what the warranty covers and what it doesn’t. Beyond the manufacturer’s warranty, every Meadowsweet installation is backed by the 365-Day Done Right Promise: if it’s not done right, we make it right – no runaround, no fine print.
Step 5: Ask about the crew, not just the equipment.
A furnace is only as good as the installation. The most efficient equipment in the world will underperform if it’s slapped in carelessly. Our technicians are background-checked and uniformed, and they follow the C.A.R.E. values on every visit: clean up like it’s their own home, ask before moving anything, respect the family’s time and quiet hours, and explain the price before the work. You’ll know what’s happening at every step, and your floors and furniture will be protected with shoe covers and drop cloths from the moment we walk in.
Furnace Replacement FAQs – Alpharetta, GA
How much does a furnace replacement cost in Alpharetta?
In Alpharetta, a full furnace replacement typically costs $3,800 to $7,600 installed in 2026. Most mid-efficiency replacements land between $4,200 and $5,800. High-efficiency models in larger homes can reach the upper end or slightly beyond. Call (478) 606-5046 for a free written estimate tailored to your house.
Can I replace a furnace for under $4,000 in Alpharetta?
Yes, in some cases. A smaller 80% AFUE furnace in an 1,800-square-foot home with a simple direct-replacement installation can run $3,800 to $4,200 all-in, including permit and disposal. If venting or gas line work is needed, that number climbs quickly. We’ll tell you honestly where your job falls and what’s driving the cost.
What is the cheapest way to replace a furnace in Alpharetta?
The lowest honest price comes from a direct swap of a mid-efficiency furnace, no ductwork changes, no venting modifications, done in the off-season. That’s usually $3,800 to $4,500. The cheapest way to own a furnace over 15 years, however, is often a high-efficiency unit that cuts gas bills – even though it costs more on day one. We’ll show you both numbers side by side.
How long does a furnace replacement take in Alpharetta?
Most replacements are done in 4 to 8 hours. A simple attic or closet swap is usually half a day; a job with new venting or ductwork can run a full day. We clean up before we leave and send you a photo of the finished workspace. Call (478) 606-5046 and we’ll give you a realistic time window based on your specific home.
Do I need a permit to replace a furnace in Alpharetta?
Yes. The City of Alpharetta requires a mechanical permit for furnace replacement, typically $150 to $400 depending on scope. Your contractor pulls it, and the job isn’t done until the city inspection passes. We handle the permit and include the cost as a line item on your written estimate.
Is it worth paying more for a high-efficiency furnace in Georgia?
For many Alpharetta homes, yes. A 96% AFUE furnace costs $800 to $1,500 more upfront than an 80% model, but it can cut winter gas usage by 15 – 20%. Over a 12 – 15 year equipment life, that often more than pays the difference. If your furnace is in an unconditioned attic or crawlspace, the efficiency benefit matters even more. We’ll run the payback math for your house before you decide.
Can you replace a furnace the same day in Alpharetta?
In most cases, yes – especially during the spring and fall. During cold snaps in late fall and winter, same-day availability tightens and we may be scheduling a day or two out. If your furnace has failed and you have a family in the house, call (478) 606-5046 – a live person answers 24/7, and we’ll tell you exactly when we can be there.
Why Alpharetta Homeowners Choose Meadowsweet Heating and Air for Furnace Replacement
We’re part of the Cedarwell family of HVAC companies, a network that has been doing this work since 2004. That means we have the buying power to get competitive pricing on nine major equipment brands – Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard – plus the independence to treat your home like a home, not a job number.
Every Meadowsweet furnace replacement starts with a written price before any work begins. Our background-checked, uniformed technicians follow the C.A.R.E. values on every visit: they clean up like it’s their own home, ask before moving anything, respect your family’s time and quiet hours, and explain the price before the work. Shoe covers and drop cloths go down before the first tool comes out. A photo of the cleanup goes to your phone before the truck leaves the driveway.
And every installation is backed by the 365-Day Done Right Promise. If it’s not done right, we make it right. No runarounds, no fine print, no phone tag. That’s the standard, and it applies to every furnace we install in Alpharetta.
If you’re weighing furnace replacement options, start with a free estimate. Call (478) 606-5046 and a live person will answer – day or night, weekends included. We’ll schedule a visit, measure your home, and hand you a written price you can actually plan around. If you’re still exploring, you can learn more about our furnace replacement services in Alpharetta or head back to the home page for a full look at what we do.
Written by Luis Serrano, Owner at Meadowsweet Heating and Air Alpharetta, serving Alpharetta and surrounding communities.
Pricing reflects the Alpharetta market as of 2026. Meadowsweet Heating and Air Alpharetta offers free estimates – call (478) 606-5046.
What Our Customers Say
"Solid work on our furnace. It took two visits because the part wasn't on the truck, which was a little inconvenient. Both times the tech was careful, clean, and kind. Can't fault the manners."
- Grace Abernathy"Good repair. It needed a second visit because the part wasn't on the truck, which was a little inconvenient. Both times the tech was careful and clean and kind though."
- Chad Boone"New system install. They protected the hallway floor all the way to the attic and vacuumed after. Worked quietly around my work calls. Not a trace left behind."
- Rosalind Okeke