Furnace & heating
AC repair
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateHVAC Company in Smyrna, GA
Smyrna homeowners call us when the AC quits during a 95-degree July afternoon or when a furnace won’t kick on during a January cold snap. Most HVAC work here comes down to two realities: housing stock that spans seven decades, and humidity that never really lets up. We’re Coldharbour Heating & Air, part of the Kingswell network of independently owned HVAC businesses, and we work by a simple set of written promises: a price before work starts, a firm arrival window, a clean job site, and a repair guarantee that lasts 365 days. Call (762) 240-5599 any hour, any day – a live person answers.
Why Smyrna Homes Are Different
Smyrna’s housing is a patchwork. The post-war ranch and split-level homes built from the 1950s through the 1970s dominate neighborhoods like Forest Hills and Belmont. These houses sit on crawlspaces or slabs, and many still run the original supply ductwork through the foundation. Newer infill townhomes and Craftsman-style builds have popped up along Atlanta Road and near the Braves stadium, but they bring their own challenge: high-efficiency equipment squeezed into tight attic spaces or narrow mechanical closets. When a retrofit goes wrong, it’s usually because the cabinet doesn’t fit or the return path was never sized for a modern blower.
The bigger issue is load sizing. Many older Smyrna systems were installed when summers were shorter and cooling equipment was oversized as a safety net. Today, that oversized equipment short-cycles and leaves humidity in the air – which is why a Smyrna home can feel clammy at 72 degrees. Homes without dedicated returns in bedrooms see the worst of it: cold air pools in the hallway while back bedrooms stay warm. We look for this on every service call because it changes how we diagnose and what we recommend. A repair that works fine on paper can still leave a bedroom ten degrees warmer than the rest of the house if the return path is missing.
Styles & brands we work with







Our Main Smyrna Services
The two services Smyrna homeowners call about most are AC repair and furnace repair, but full system replacements run a close third in the older housing stock. Here’s what each one looks like on the ground in Smyrna.
AC Repair in Smyrna
When an AC system fails in Smyrna humidity, the problem is rarely just the compressor. We spend a lot of time tracing low airflow back to duct runs in slab foundations, where moisture collects and old flex duct has collapsed. A clogged evaporator coil in a crawlspace unit, a failing capacitor in a 1990s Goodman, or a refrigerant leak in a newer Lennox heat pump – each diagnosis starts with the same question: is the system moving enough air? If you’ve noticed a bedroom that never cools or a utility bill that spikes every summer, the problem may not be the AC unit itself. Read more about what we check on our AC Repair in Smyrna page. We quote a written price before any work begins, and the repair carries our 365-Day Done Right Promise in writing.

Furnace Repair in Smyrna
Smyrna winters are mild by northern standards, but a house with a dead gas furnace gets cold fast when temperatures drop below freezing at night. Common calls include cracked igniters on older furnaces, failed inducer motors, and gas valves that won’t open. In homes with electric heat pumps, winter problems often trace back to a defrost board that isn’t cycling properly – a symptom of Georgia’s freeze-thaw pattern that Midwest and Northeast techs rarely see. We walk through the sequence of operation on every furnace call so you know what failed, why it failed, and what the repair price includes. Details are on our Furnace Repair in Smyrna page. Every repair is written up with a 365-day guarantee.

AC Installation in Smyrna
A new AC system in Smyrna is rarely a simple swap. Homes built in the 1960s and 1970s often have undersized supply ductwork and no return air in the bedrooms, which means a proper install involves more than setting a new condenser outside. We calculate the load room by room, which is how we catch undersized returns and duct restrictions before they undermine a brand-new unit. Tight attic scuttles and narrow closet doors in Smyrna’s newer townhomes make equipment selection a real decision, not an afterthought. See our AC Installation in Smyrna page for full details on sizing, options, and what a written fixed-price quote includes.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Smyrna
Our technicians are trained to work on all nine major residential HVAC brands, and most Smyrna service trucks carry common parts for Trane, Lennox, and Goodman systems. If you have a Rheem heat pump from the early 2000s or a newer Carrier furnace, we diagnose it the same way we do every system: by testing components, not guessing. See our brands for the full list.
See the difference
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AfterPricing for HVAC Company in Smyrna, GA
What you’ll pay in Smyrna for most common HVAC jobs, parts and labor included:
| Service | Typical range in Smyrna |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3,500 – $7,500 |
| Tune-Up | $80 – $200 |
What moves the price in Smyrna is access and age. A condenser that’s easy to reach at ground level costs less to service than one stuffed into a fenced side yard with the panel facing a brick wall. Older systems with obsolete parts cost more to repair simply because the part has to be sourced, not carried on the truck. Regardless of the number, the price is written down and handed to you before any work starts. It doesn’t change at the door.
Neighborhoods We Serve in Smyrna
We run calls across Smyrna all day, every day. Dispatch and scheduling are coordinated from our Atlanta office, but crews live and work locally, so response is fast.
- Forest Hills
- Belmont
- Cumberland
- Vinings-area neighborhoods
- Rose Garden Hills
If you’re in one of these areas and the AC is down on a 90-degree afternoon, expect a technician on site the same day in most cases.
Service Area – Cities Near Smyrna
Coldharbour Heating & Air serves Smyrna and the surrounding Cobb County area. If you’re in Marietta, GA, Mableton, GA, Powder Springs, GA, or Kennesaw, GA, we cover those homes too. The same written guarantees and upfront pricing apply everywhere we work.
Serving Smyrna, GA - Our Local Coverage Area
We’re based in the Smyrna 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 HVAC Company in Smyrna
Most non-emergency calls are scheduled within one to two days. For a dead AC during a summer heat wave or a furnace that won’t start during a cold snap, we make same-day service a priority. Call (762) 240-5599 and a live person will tell you exactly when the technician will arrive.
Some Smyrna HOAs, particularly in newer townhome communities, require written approval before condenser replacement or ductwork changes. We can help with the paperwork, and where a city permit is required for the work, we handle that process as part of the job. You won’t have to chase forms.
Every repair and installation gets a written price before any work begins. That price includes parts and labor, and it does not change at the door. If we quote $380 to replace a blower motor, that’s what you pay. The price is in your hand before a single tool comes out.
What happens when you call
- 1A real person answersNo phone trees - talk to a local hvac pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Smyrna Customers Say
"AC quit on the hottest day of the year of course. Coldharbour had a tech out that evening, found a bad capacitor, and had us cool again within the hour. Charged the quote, not a penny more."
- Doug Feeney"Furnace was short cycling all winter. They diagnosed a bad sensor instead of condemning the whole unit like I feared. Cheap fix, honest call."
- Russ Tiedemann"Signed up for a tune up before summer. He found a part starting to fail and showed me the reading, didn't just tell me to trust him. Fixed it then so we wouldn't get stuck in July."
- Sophia Tran