AC repair
Furnace & heating
Heat pumps
Ductless mini splits
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Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateLennox HVAC in Seagoville, TX
Sunstone AC Repair provides independent Lennox service across Seagoville, TX, from heat pump repair to furnace work and ductless systems. We’re not affiliated with the manufacturer, and that’s on purpose: we diagnose what your equipment actually needs instead of steering every call toward a new install. What makes our Lennox work different here is the ground underneath it. Seagoville homes sit on shifting black clay and pier-and-beam foundations, and Lennox condensers and line sets feel that movement in ways a slab-built Dallas subdivision never shows you. We know both the equipment and the dirt it sits on.
Call (866) 970-7959. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday.
Why Seagoville Residents Choose Us for Lennox Service
We’ve worked on Lennox equipment for years, across the whole residential lineup from older Merit series furnaces up to current Dave Lennox Signature Collection systems. That matters in Seagoville because the housing stock swings hard. You’ve got original ranch homes near the historic center and manufactured units out on rural acreage, and the two need completely different troubleshooting. Knowing Lennox control boards, refrigerant charge procedures, and how the model families behave in each setting saves you return visits.
Harold Duran runs Sunstone AC Repair, which he started in 2018 after more than two decades in the trade. He learned the work at Eastfield College in Mesquite. His rule is simple and it’s ours: if he wouldn’t put a part in his own house, it doesn’t go in yours. When a capacitor and a contactor will buy your Lennox system a few more good years, we say so, even when a full replacement would pay us better.
We also carry quality parts that fit your specific unit, schedule around your day, and give you a written estimate before anything gets touched.
Styles & brands we work with
- AC repair
- Furnace & heating
- Heat pumps
- Ductless mini splits
- Carrier
- Trane
- Goodman
Common Lennox HVAC Problems We Solve in Seagoville
- Control-board failures on Merit and Elite furnaces. North Texas voltage spikes and a cooling season that runs most of the year take a toll on furnace boards in older Seagoville ranch homes with original wiring. If your Merit or Elite furnace is acting erratic or won’t fire, the board is a common culprit and we test it before recommending a swap.
- Refrigerant leaks at brazed joints and Schrader valves. Lennox R-410A condensers here take a beating from black clay soil that shifts and stresses the line set, especially under pier-and-beam homes. A slow leak that drops your cooling in July usually traces back to one of these connections.
- Clogged condensate drain pans and traps. Upflow Lennox air handlers in attics and downflow packaged units in manufactured homes both deal with marginal drainage slopes in Seagoville. When the pan clogs, water finds the ceiling.
- Heat-pump reversing valve and defrost board failures. Lennox XP series heat pumps on rural Seagoville acreage sit exposed to open wind and fast temperature swings. During a hard freeze, that’s where defrost problems show up first.
- Wiring damage and blower motor wear. Rodents in exposed belly ductwork and long runtimes on aging blower motors are steady repair calls on Seagoville manufactured homes.
Lennox Service in Seagoville: What Local Conditions Mean for Your Equipment
Here’s the thing that separates Seagoville from most of Dallas County. Out on the rural acreage, a lot of manufactured homes sit on pier-and-beam or block foundations, which means the ductwork runs exposed underneath instead of tucked in an attic or buried in a slab. Rodents get into it. Moisture gets into it. Insulation sags and seams open. For a Lennox packaged or downflow unit, that belly ductwork is the weak point, and it’s a failure mode you almost never see in a slab-built subdivision. We recently serviced a Lennox XP14 heat pump in a manufactured home off Lawson Road in Seagoville where the homeowner said the system was blowing cold air in heating mode. Our tech found a failed defrost control board and a chewed low-voltage wire in the exposed belly ductwork, both of them common on pier-and-beam setups. We replaced the board with an OEM Lennox part, repaired the wiring, and ran the defrost cycles to confirm they worked before the next freeze hit. That’s the job here: know the Lennox equipment and know what Seagoville housing does to it.
Lennox Models & Products We Service in Seagoville
We handle the full range of Lennox residential equipment in Seagoville. That includes Merit Series air conditioners and furnaces, Elite Series systems, Dave Lennox Signature Collection variable-capacity ACs and furnaces, and Lennox heat pumps. We also work on ductless systems where a room addition or a manufactured home needs zoned comfort without new ductwork.
Parts selection is where honesty shows up. We stock OEM Lennox control boards, ignitors, and blower motors for common Merit and Elite models, and we use quality aftermarket capacitors and contactors only when they meet or exceed OEM specs. If a part won’t hold up, we don’t install it. It’s that plain.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Seagoville
These are typical estimated ranges for work in the Seagoville area. Your written estimate sets the final price.
| Service | Typical Estimated Range |
|---|---|
| AC Repair | $150 – $650 |
| Furnace Repair | $150 – $700 |
| AC Installation | $3500 – $7500 |
| Tune-Up | $80 – $200 |
What moves the number: whether it’s a single part or a compressor, how accessible the unit is on your lot, and whether ductwork or line sets need attention. A free estimate means we look at the actual equipment, explain what’s failing and why, and put the price in writing before we start. If a repair makes more sense than a replacement, you’ll hear that from us. Call (866) 970-7959 for an exact quote.
Serving Seagoville, TX – Our Local Coverage Area
We serve Seagoville and nearby communities. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – Lennox HVAC in Seagoville
A frozen Lennox heat pump in winter usually points to a defrost board or reversing valve problem, not the outdoor temperature alone. During a hard freeze, a heat pump that can’t cycle into defrost mode will ice over and stop heating. We test the defrost control board and reversing valve, and on rural Seagoville acreage we also check the exposed wiring and line set, since wind exposure and rapid temperature swings make those components work harder. Call (866) 970-7959 for an exact quote.
Not always. A tripping breaker on a Lennox Merit furnace can be the control board, but it can also be a failing blower motor, a shorted wire, or a bad breaker itself. Repeated voltage spikes and long runtimes in older Seagoville ranch homes with original wiring push these components hard. We test the whole circuit rather than guessing at the board. Call (866) 970-7959 for an exact quote.
Often yes. Manufactured homes on pier-and-beam or block foundations typically run packaged or downflow Lennox systems with ductwork underneath, and that exposed layout needs different service than an attic air handler. Where a home is hard to duct or an addition needs its own comfort zone, a Lennox ductless system is worth considering. We’ll walk your layout and tell you what fits.
Once a year, ideally before the long cooling season starts. Seagoville systems run hard through months of 95°F-plus heat, and a tune-up catches weak capacitors, low refrigerant, and clogged drains before they strand you in August. It’s a flat price and you get a written report of what we found. Call (866) 970-7959 for an exact quote.
Sometimes, sometimes not. At 15 years, a compressor or heat exchanger failure on a Lennox system means you’re weighing a major repair against a replacement, and we lay out both with real numbers so you can decide. If a smaller repair keeps the system running a few more seasons, we’ll tell you that too. Call (866) 970-7959 for an exact quote.
Service Areas Near Seagoville
We serve Lennox owners across Seagoville and the surrounding towns. That includes Seagoville itself, plus Garland, Heath, Rockwall, and Fate. We also cover Mesquite and Forney, so if you’re just outside the city line, call and we’ll confirm coverage.
Book Your Lennox Service in Seagoville Today
Whether your Lennox heat pump is icing up, your furnace won’t fire, or you’re weighing repair against replacement, we’ll give you a straight answer and a written estimate. Same-day service is often available. Call (866) 970-7959. We answer 24/7, with fast dispatch from 7am to 7pm, Sunday through Friday. Estimates are free.
Written by Harold Duran, Owner at Sunstone AC Repair, serving Seagoville since 2018.