Trusted Columbus HVAC Service
When you need a reliable heating and cooling company in Columbus, Dunwoody HVAC is the team to call. We've been keeping local homes and businesses comfortable through every season, earning repeat business one job at a time. Our technicians are local, not dispatched from across the state, which means faster response times and a real understanding of the climate patterns, housing stock, and ductwork quirks that shape how HVAC systems here perform and fail.
From a single no-cool emergency to complete system replacements, ductless mini-split installations, and seasonal maintenance programs, our team handles every kind of residential and commercial heating and cooling need. We offer prompt service and give you a clear, written quote before any work begins, no hidden fees, ever. Our trucks are stocked with the parts that fail most, capacitors, contactors, igniters, flame sensors, blower motors, and thermostats, so most repairs are finished in a single visit.
Whether your air conditioner is blowing warm air, your furnace is short-cycling or refusing to light, or you're simply planning ahead for a system past its prime, one call to (470) 200-3365 gets an experienced local technician headed your way with everything needed to restore your comfort quickly.

Complete Heating & Cooling Services for Columbus Properties
We service every type of heating and cooling equipment you'll find in local homes and businesses, from central air conditioners and gas furnaces to heat pumps and ductless mini-splits. It makes no difference whether the building is a starter home, a condo, or a busy office. Our technicians know the local climate, the age and construction of local homes, and the code requirements inspectors enforce, which pays off in every diagnosis.
On the residential side, we take care of everything from quick fixes, like a weak capacitor, a burned contactor, a dirty flame sensor, or a seized blower motor, to tracking down refrigerant leaks, full system change-outs, and ductless additions. We size every new system with a proper load calculation rather than guesswork, so you get even temperatures and reasonable utility bills instead of a unit that short-cycles itself to an early death. Seasonal maintenance visits clean coils, verify refrigerant charge, test safety controls, and check static pressure, still the most reliable way to extend equipment life.
Commercial work makes up a large share of our work as well. We service rooftop units, split systems, and ventilation equipment for restaurants, retail stores, offices, and multi-unit properties, and we know that every hour of downtime costs your bottom line. To keep that downtime short, we carry common parts on every truck, diagnose quickly, and schedule repairs around your operating hours whenever possible.
Quick Heating and Cooling Help in Columbus
When your heat or air quits, how fast help arrives matters more than anything else. That's why we keep scheduling flexible across the area and answer every call with a live person. Urgent calls usually get a technician within a day, and we prioritize no-heat and no-cool calls ahead of routine work.
The urgent calls we answer usually follow a pattern. On the cooling side, it's an AC blowing warm air, an outdoor unit that hums without starting, or an evaporator coil iced over. On the heating side, it's a furnace that lights and then shuts down. Year-round, it's breakers that trip whenever the system starts, clogged condensate drains backing water into the furnace cabinet, and thermostats that have quit. Because our trucks are stocked with capacitors, contactors, igniters, flame sensors, universal control boards, and fittings, most of these get fixed in one visit, at a price you approve before we start.
Two situations call for a quick step from you before our technician gets there. The first is an iced-over air conditioner: turn the system off at the thermostat and set the fan to "on" so the moving air thaws the coil, because continuing to run it can overflow the drain pan and hurt the compressor. The second is a furnace that keeps cycling on and off or gives off a burning smell. Turn it off at the service switch and give us a call. Those few minutes can prevent a far bigger repair.
Getting More Years From Your HVAC System in Columbus
Routine maintenance is the difference between a system that lasts and one that breaks down in the middle of the season. Our advice for homeowners is a short list: a new filter every one to three months, two feet of clearance around the outdoor condenser, a spring rinse of the condenser coil, and two professional tune-ups a year, so problems are found while they're still inexpensive.
Take a look at the age of your system. That number says a lot about what comes next. Most well-maintained air conditioners reach 12 to 15 years, gas furnaces 15 to 20, and heat pumps 10 to 15. If your system is past that range and also shows higher bills, uneven temperatures, or repeated repairs, it's a strong candidate for a planned replacement, and that's almost always cheaper and less stressful than an emergency replacement in peak season.
The sooner you call about a comfort problem, the smaller the repair tends to be. A weak capacitor is an easy, low-cost part to replace, yet the same part, neglected for a season, can ruin the compressor and turn a simple fix into a full system replacement. Save our number in your contacts now so you can reach us fast as soon as something sounds or feels wrong in your home. A quick call saves time, money, and sleepless nights.
Typical Heating & Cooling Issues in Columbus
HVAC systems in this area face a familiar set of enemies. Hard-running summers push compressors and capacitors to their limits, and salt air and moisture chew at outdoor condenser coils and fins, cutting efficiency years before the equipment should show its age. Clogged filters quietly starve systems of airflow, freezing evaporator coils in summer and overheating furnace heat exchangers in winter, a slow kind of damage most homeowners never see coming.
Our technicians also run into the full range of component failures in local homes: weak capacitors that leave the condenser humming without starting, contactors with pitted points, cracked igniters and dirty flame sensors that lock furnaces out on cold mornings, refrigerant leaks that turn into long lukewarm afternoons, and blower motors worn down by years of restricted airflow. The area's older housing stock adds its own layer, undersized returns, leaky or crushed ductwork, and additions that no duct run ever reached.
Every one of these problems is fixable, and most are much less expensive when caught early. If your system is doing anything unusual, strange noises, weak airflow, rooms that won't hold temperature, bills creeping upward, a quick diagnostic visit from our team catches the small problem before it becomes a costly breakdown. Call (470) 200-3365 and we'll take a look.
Your Go-To Heating & Air Team
As a locally-operated HVAC company, we understand the unique challenges homeowners here face. From capacitors that quit in a heat wave to igniters that fail on the first cold night, our technicians know what to look for and how to fix it.
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Get Help: (470) 200-3365The Reason Columbus Keeps Calling Us
What homeowners here get with Dunwoody HVAC comes down to a few things: fast scheduling, honest diagnosis, and workmanship that holds up. We answer quickly, arrive prepared, and fix the cause, not just the symptom, checking the airflow, charge, and electrical conditions that killed the failed part in the first place. The price is set before work starts, and it stays put. Whether it's a same-day AC repair or a planned system upgrade, the job gets done right the first time.
Common Heating & Cooling Questions
More Areas We Cover
Our technicians work throughout the surrounding region. See the other areas we serve.