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Get your free estimateLennox HVAC in Johns Creek, GA | Meadowsweet Heating and Air Alpharetta
We provide independent Lennox HVAC service across Johns Creek, from quick capacitor replacements to full system retrofits in the large custom homes that define this city. What sets our Lennox work apart here is simple: we know how Johns Creek’s humidity, attic installations, and multi-zone systems interact with specific Lennox failure modes, and we fix the root cause instead of band-aiding the symptom. Call (478) 606-5046 for a straight answer about your Lennox equipment, backed by our 365-Day Done Right Promise and a written price before any work starts.
We’re an independent Lennox service provider, not manufacturer-affiliated or authorized, which means we answer to you, not a corporate warranty department. That independence lets us recommend what’s actually right for your Johns Creek home.
Why Johns Creek Residents Choose Us for Lennox Service
Our technicians have handled our Furnace Repair in Johns Creek and AC service across hundreds of homes, from early 2000s G61 furnaces to modern SL28XCV air conditioners. That range matters. It means we know the quirks of older Lennox control boards as well as the communication protocols on new iComfort systems. When a Lennox G61 furnace in Johns Creek locks out on a damp December morning, we’re not guessing, we’re recalling the last dozen identical failures and going straight to the ignition control board.
Luis Serrano, our owner, trained at Los Angeles Trade-Technical College before spending nearly two decades learning what Georgia humidity does to coils and ductwork from the inside out. He’s the kind of tech who will walk you through exactly what he found, what he fixed, and what to watch for next, no rushed explanations and no surprise line items. That’s the standard we hold for every Lennox call in Johns Creek.
We stock genuine Lennox OEM parts for critical components like control boards, variable-speed motors, and communicating sensors, and we keep common wear items like capacitors and contactors on the truck. That means faster turnaround when your Lennox system goes down in Johns Creek, because we’re not waiting on a parts shipment from a distributor before we can even diagnose.
Styles & brands we work with
Common Lennox HVAC Problems We Solve in Johns Creek
- Intermittent no-heat on G61 and early EL296 furnaces. Johns Creek’s damp winter mornings push older ignition control boards past their limit. The board fails to confirm flame, the furnace locks out, and you get a cold house at 6 a.m. We replace the board with a genuine Lennox OEM part and verify the flame sensor signal before we leave.
- Variable-speed ECM motor failures on XC and XP communicating systems. High-humidity summer cycling in Johns Creek means these motors run constantly, often in attic installations where heat builds past design limits. When the motor module fails, you lose airflow and the system throws communication errors. We test the motor independent of the control board so we don’t replace the wrong component.
- Refrigerant leaks at evaporator coil tube bends on 13ACX and XC13 units. In attic installations common to Country Club of the South, coil corrosion from humid attic air combined with vibration at the tube bends creates slow leaks. We pressure-test with nitrogen, locate the leak precisely, and repair or replace the coil rather than just topping off refrigerant and hoping.
- iComfort thermostat communication faults after summer thunderstorms. Johns Creek gets real lightning, and power surges can scramble the data signal between the thermostat and the outdoor unit. The system still runs, but the thermostat reads “communicating system error.” We re-establish communication, check the surge protection, and recommend a surge suppressor if the home doesn’t have one.
- Clogged condensate lines and tripped secondary drain pan switches. This is the big one in Johns Creek. High summer humidity means condensate lines clog with algae faster than in drier cities. When the primary drain backs up, the secondary drain pan float switch trips and the system shuts down on the hottest day. We clear the line, treat it, and often recalibrate zoning dampers that were overworking the affected zone.
That last item shows up over and over in Johns Creek. It’s not a Lennox defect. It’s what the local climate and attic installations do to any system, and Lennox systems with their tight safety switches respond by shutting down rather than dumping water through your ceiling. We’d rather clear a drain than replace a collapsed drywall panel.
Lennox Service in Johns Creek: What Local Conditions Mean for Your Equipment
Johns Creek’s high-end subdivisions like St Ives and Country Club of the South have extensive attic duct runs with multiple zones. In these homes, we frequently correct Lennox iHarmony zoning damper calibration and bypass sizing to eliminate hot and cold spots that other contractors simply band-aid with thermostat adjustments. Here’s the part that’s specific to this city: the combination of 3,000 to 6,000-plus square foot floor plans, high ceilings, and attic-installed air handlers means the static pressure and zone balance get out of spec faster than in smaller, single-zone homes. A damper that’s overdriving the upstairs zone in a St Ives home isn’t a thermostat problem, it’s an airflow design and calibration problem. Our tech was dispatched to a St Ives home after the owner reported no cooling upstairs. In the attic, we found the Lennox XC20’s secondary drain pan float switch tripped due to a clogged primary condensate line from the summer humidity. After clearing the line with a nitrogen blowout and applying biocide tablets, we also recalibrated the iHarmony zoning dampers that had been overdriving the upstairs zone, restoring even cooling and preventing a repeat emergency call. That’s the difference between fixing the symptom and fixing the system.
No generic Lennox service page will tell you that your Johns Creek zoning dampers need calibration, not just a new thermostat. No generic Johns Creek HVAC page will tell you which Lennox failure modes show up most often in St Ives attics. That’s the information this page exists to deliver.
Lennox Models & Products We Service in Johns Creek
We work on the full Lennox product range you’ll find in Johns Creek homes. That includes the Dave Lennox Signature Collection like the SL28XCV air conditioner and SLP99V furnace, the Elite Series including EL296V furnaces and XC20 air conditioners, and the Merit Series like the ML180 furnace and 13ACX air conditioner. We also service Lennox heat pumps, including the XP25, and Lennox iHarmony zoning systems, iComfort thermostats, and Lennox dehumidifiers.
For critical components like control boards, variable-speed motors, and communicating sensors, we use genuine Lennox OEM parts to preserve system integrity. For wear items like capacitors and contactors, we offer quality aftermarket options that control your repair cost without compromising reliability. We stock common parts locally for fast Johns Creek turnaround, and we’ll tell you upfront which parts will come from our truck and which we need to order. You can also review our broader Lennox sales & service page for more detail on the equipment we support.
See the difference
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AfterLennox Service Pricing in Johns Creek
Here are the price ranges you can expect for Lennox HVAC work in Johns Creek. These are honest market numbers, not lowball teasers.
| Service | 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 on our AC Repair in Johns Creek and other Lennox work is usually the part and the access. A capacitor on a ground-level condenser is quick. A variable-speed motor in a St Ives attic on a summer afternoon takes more time and a more expensive part. When a Lennox compressor fails on a 12-plus-year-old R-410A system, we present an honest repair-versus-replace analysis factoring in SEER2 efficiency gains and Johns Creek’s long cooling runtimes. Sometimes repair makes sense. Sometimes a new SL28XCV pays for itself in a home that runs AC nine months a year. We’ll show you the numbers either way. Call (478) 606-5046 for an exact quote, the estimate is free and the written price comes before any work starts.
Our service area covers Johns Creek service area and the surrounding communities. Every visit includes shoe covers, drop cloths, and a photo of the clean-up before our crew leaves, so you know exactly how your home was treated.
Serving Johns Creek, GA - Our Local Coverage Area
We’re based in the Johns Creek 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 Johns Creek
The secondary drain pan switch trips when the primary condensate line is clogged and water backs up into the pan. In Johns Creek’s humid summers, algae grows fast in condensate lines, especially in attic installations where the line runs warm. The fix is clearing the line completely, treating it to slow regrowth, and confirming the switch resets properly. We also check whether a partially open damper is making the system run longer and produce more condensate than it should. Call (478) 606-5046 and we’ll get it cleared, not just reset.
Yes. That error means the thermostat lost its data connection to the indoor or outdoor unit, usually after a power surge or a brief outage. Sometimes it’s as simple as power-cycling the system in the right sequence. Other times a control board or the thermostat itself needs replacement. Since we service Lennox equipment specifically, we know which component to test first instead of replacing parts on a guess. Call (478) 606-5046 and we’ll diagnose it properly.
Usually yes, if the G61 needs a major repair like a heat exchanger or variable-speed blower. The SLP99V runs at up to 99% AFUE, modulates heat output continuously, and pairs with a communicating thermostat for better comfort in a Johns Creek winter. The payback depends on your exact home, but for a 3,000-plus-square-foot house in Johns Creek with a 15-year-old furnace, replacement typically beats a major repair. We’ll give you a written repair quote and a written replacement quote and let you decide without pressure.
Light frost on a heat pump coil is normal, but full ice means something’s off. In Johns Creek’s damp winter air, a low refrigerant charge or a failing defrost control on a Lennox XP25 or similar heat pump will cause ice to build and block airflow. The system then can’t heat your house and may damage the compressor if it keeps running. We check the defrost cycle, the reversing valve, and the refrigerant charge to find the actual cause. If it’s icing over, call (478) 606-5046 before it gets worse.
For variable-speed ECM motors, we recommend and install genuine Lennox OEM motors. The aftermarket universal motors work but they lose the precise airflow control your Lennox system was designed for, which affects efficiency and comfort in a multi-zone Johns Creek home. For simple wear parts like capacitors and contactors, aftermarket options are fine and save you money. We’ll always tell you which parts we’re using and why, with a written price before any work starts.
Service Areas Near Johns Creek
Our Lennox service work regularly takes us beyond Johns Creek into Lennox service in Lawrenceville, Lennox service in Alpharetta, Suwanee, Norcross, and the surrounding communities. If you’re near the Johns Creek line in any direction, call and we’ll tell you straight if we can get to you quickly.
Book Your Lennox Service in Johns Creek Today
If your Lennox system is acting up in Johns Creek, call (478) 606-5046. We answer live, 24/7, and we’ll get a technician scheduled. Same-day service is available for urgent cooling and heating failures. You’ll get a written price before any work starts, and the job is backed by our 365-Day Done Right Promise. If we wouldn’t leave it that way in our own house, we’re not done yet.
Written by Luis Serrano, Owner at Meadowsweet Heating and Air Alpharetta, serving Johns Creek and surrounding communities.