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Get your free estimateLennox HVAC in Alpharetta, GA | Dalton Heating & Air Alpharetta
Alpharetta AC Repair from Dalton Heating & Air provides independent Lennox repair, maintenance, and replacement across Alpharetta, GA. We’re not a manufacturer-authorized dealer, which means we answer to you, not a corporate quota. What sets our Lennox work apart here is simple: we know exactly which Lennox failure patterns show up in Alpharetta’s specific housing stock and climate, and we stock parts to fix them the same day. Call (229) 537-2086 for service.
Why Alpharetta Residents Choose Us for Lennox Service
Lennox builds sophisticated equipment. The Signature Series variable-capacity units, the Elite Series two-stage systems, the Merit Series builders-grade line. Each one fails in its own way, and each one needs a technician who actually understands the engineering behind it. That’s what we do. Marco Benitez, owner of Dalton Heating & Air Alpharetta, learned HVAC fundamentals at Los Angeles Trade-Technical College and has spent years in the field across metro Atlanta. His crew has torn apart enough Lennox condensers in Alpharetta garages and attics to know the difference between a compressor that’s tired and a compressor that’s done.
We’re a Garrison Partners company operating under The Garrison Standard since 2003. Every job gets a written price before any work starts. Every repair includes a written guarantee for a full year. If the repair fails in that window, we come back at no charge. That’s not a promotion. It’s the rule. And when you call, a live person answers. 24/7. No voicemail queue, no “we’ll call you back within 24 hours.”
For Alpharetta homeowners specifically, our Lennox sales & service work covers everything from a dead blower motor in a Windward two-zone system to a cracked heat exchanger in a downtown 1970s ranch. We know the equipment, and we know the houses it runs in.
Styles & brands we work with
Common Lennox HVAC Problems We Solve in Alpharetta
- Zoning damper motor failures in large two-zone homes. Alpharetta’s newer subdivisions, especially around Windward and Kimball Bridge, commonly run Lennox systems with zoned ductwork and a bypass damper. When that damper motor seizes, one floor gets cold while the other stays hot. We replace the motor and recalibrate the zone controller, not just reset the thermostat and hope.
- Evaporator coil freeze-ups from humidity and pollen. Alpharetta’s humid subtropical climate pushes moisture through Lennox coils at a rate that clogs them faster than in drier counties. Spring pollen compounds it. The result is a frozen XC or XP coil and a condensate drain that backs up. We clean coils and flush drain lines, then address the airflow issue that caused the freeze in the first place.
- ECM blower motor module failures after thunderstorms. Georgia summer storms bring power surges. Lennox Elite and Signature furnaces with variable-speed ECM motors take those surges hard. The motor itself is often fine; the module on the end of it fries. We replace the module when possible, which saves Alpharetta homeowners hundreds compared to a full motor swap.
- IComfort and S30 communicating thermostat faults. Lennox communicating systems do their own diagnostics, but the error codes can be cryptic. A ‘damper not responding’ code on an S30 might mean a failed zoning motor, a wiring issue, or a communication fault on the data bus. We trace it properly instead of throwing parts at it.
- Cracked heat exchangers in older downtown homes. Houses in Downtown Alpharetta built during the 1960s through 1980s often have original ductwork that’s undersized and leaky. Restricted airflow makes the furnace run hot, and over years that stresses the heat exchanger until it cracks. The system trips the rollout switch, and the homeowner is left cold. We inspect the exchanger, show you what we found, and walk through repair versus replacement honestly.
Lennox Service in Alpharetta: What Local Conditions Mean for Your Equipment
Alpharetta’s growth from a small town to a sprawling suburban city created two distinct equipment environments. In the newer subdivisions like Windward and Kimball Bridge, homes run 3,000+ square feet with separate systems or zoned setups for upstairs and downstairs. These Lennox systems often use a single bypass duct with a barometric damper. When that damper’s motor fails, one zone stays hot while the other freezes. We see it almost weekly in those neighborhoods. It’s rare in nearby Roswell or Milton, where housing stock trends older and single-zone. That pattern matters because it means Alpharetta Lennox owners should pay attention to uneven cooling between floors. That’s not a thermostat setting problem. It’s usually a physical component failure, and it won’t fix itself.
Our tech was called to a home on Windward Parkway where the upstairs zone on a Lennox XC25 wouldn’t cool below 80°F. The iComfort thermostat showed a ‘zone 2 damper fault.’ We found the damper motor in the attic bypass duct had seized. Replaced the Lennox-specific motor, recalibrated the zone controller, and the upstairs dropped to 72°F within an hour. No guesswork, no markup on confusion.
Lennox Models & Products We Service in Alpharetta
We work on the full Lennox lineup. The Dave Lennox Signature Collection (SLP98V, XC21), the Signature Series (XC25, XP25, SL280V), the Elite Series (XC16, EL296V), and the Merit Series (ML14XC1, ML180). That covers variable-capacity condensers, two-stage gas furnaces, our Heat Pump Installation in Alpharetta, and everything in between.
On parts, we’re practical. For critical components like ignitors, control boards, and variable-speed motors, we use OEM Lennox parts to maintain system integrity. For wear items like capacitors and contactors, we use proven aftermarket parts when OEM lead times are long. That keeps Alpharetta homeowners from waiting days on a simple repair. We stock common Lennox-specific parts locally so a failed damper motor or control board doesn’t mean a week without air conditioning in August.
See the difference
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After
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Before
AfterLennox Service Pricing in Alpharetta
Here’s what Lennox work actually costs in Alpharetta. These are the numbers we quote, in writing, before any wrench turns.
| Service | Typical Price Range |
|---|---|
| Lennox AC Repair | $150 – $650 |
| Lennox Furnace Repair | $150 – $700 |
| Lennox AC Installation | $3,500 – $7,500 |
| Lennox Tune-Up | $80 – $200 |
What drives the cost: the part, the access, and whether we’re fixing one component or untangling a system that’s been patched by three previous companies. A bad capacitor is cheap. A failed variable-speed compressor in a 12-year-old XC25 is not. When a repair crosses into replacement territory, we give you an honest comparison. Alpharetta’s long cooling season means a high-efficiency system can pay for itself faster than you’d think. Call (229) 537-2086 for a free estimate with real numbers.
Serving Alpharetta, GA - Our Local Coverage Area
We’re based in the Alpharetta 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 – Lennox HVAC in Alpharetta
Because that’s when your zoned system is actually moving air between zones. The damper motor in the bypass duct cycles constantly during cooling season. In Alpharetta’s humid summers, those motors run more often and fail faster. The fault is the thermostat reporting a real mechanical problem: the damper motor isn’t responding. We replace the motor and recalibrate the zone controller. Call (229) 537-2086 and we’ll diagnose it same day.
Almost always an airflow or refrigerant issue. High humidity and pollen clog the evaporator coil, the coil temperature drops below freezing, and ice forms. It could also be a dirty filter or a refrigerant charge that’s off. We check airflow first, then the charge. Running a frozen system can damage the compressor, so shut it off and call us at (229) 537-2086.
Once a year, minimum. Alpharetta’s pollen loads in spring and heavy cooling demand in summer mean coils clog and drains back up faster than in other climates. A tune-up runs $80 – $200 and includes coil cleaning, drain flushing, and a written report of anything we find. Technicians aren’t paid on what they sell, so the report is the condition of your system, not a sales pitch. Call (229) 537-2086 to schedule.
Yes. We regularly service Lennox furnaces in 1960s-80s homes near Downtown Alpharetta. Those systems often have undersized ductwork and restricted airflow, which stresses the heat exchanger. We inspect the exchanger and show you what we find, then give you repair and replacement options with written pricing. Call (229) 537-2086 and ask for a furnace inspection.
Yes. Lennox communicating systems use a four-wire data bus between the thermostat, indoor unit, and outdoor unit. If a previous installer wired it incorrectly or mixed communicating and non-communicating components, the system throws errors or runs at reduced capacity. We trace the wiring, verify the data bus, and correct it. Call (229) 537-2086 for an exact diagnosis.
Service Areas Near Alpharetta
We serve Alpharetta and the surrounding communities, including our full Alpharetta service area, Lennox service in Milton, Lennox service in Duluth, plus Sugar Hill and Buford. If your Lennox system is struggling and you’re within reach of Alpharetta, call us.
Book Your Lennox Service in Alpharetta Today
Same-day Lennox repair is available across Alpharetta. The price is in writing before we start. The repair is guaranteed for a full year. Call (229) 537-2086 now for a free estimate.
Written by Marco Benitez, Owner at Dalton Heating & Air Alpharetta, serving Alpharetta, GA since 2003.