Lennox HVAC in San Antonio, TX

Lennox HVAC in San Antonio, TX | Brandt HVAC Co San Antonio

We service Lennox heating and cooling systems all over San Antonio, and we do it as an independent HVAC contractor, not a factory affiliate. That matters because we are not locked into one brand’s sales playbook. We fix what is actually wrong. The one thing that makes our Lennox work here different is simple: we have pulled apart enough Lennox condensers and furnaces across San Antonio slab homes and attic retrofits to know exactly how this city’s heat, humidity, hail, and oak pollen punish specific Lennox parts. Call (361) 470-8872 for a straight diagnosis and a written price before any work starts.

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Why San Antonio Residents Choose Us for Lennox Service

Devin Marlowe, our owner, learned HVAC at Los Angeles Trade-Technical College and spent nearly two decades on roofs and in attics across the Southwest before running service calls throughout San Antonio. He has spent enough long summers keeping homes near the Pearl District livable to know what a Texas August does to a system that skipped its spring tune-up. Our techs work on Lennox Merit, Elite, and Signature equipment every week. We stock the parts that fail most often here: capacitors, ignitors, pressure switches, and thermostats. That means fewer return trips and faster fixes. We also send every technician to your door with a name and photo before arrival, badge in hand. If someone shows up you were not told to expect, that visit is on us.

Our relationship with Lennox is honest. We are an independent Lennox sales & service provider covering the San Antonio service area. We are not authorized by Lennox, and we will not pretend otherwise. What we are is deeply familiar with how Lennox systems behave in this climate, and that familiarity saves you money. A tech who has seen 50 pitted Lennox condensers in Helotes knows to check the fins before quoting a compressor. That is the kind of certainty we sell.

Common Lennox HVAC Problems We Solve in San Antonio

Lennox builds good equipment. San Antonio is just a hard place to run it. Here are the failures we see most often, tied to the exact conditions that cause them.

• Formicary pinhole leaks in Quantum coils: Older Merit and Elite aluminum evaporator coils develop tiny corrosion tunnels after 10 to 14 San Antonio summers. You will notice slow refrigerant loss and a house that feels sticky even when the thermostat says 72. We leak-test with nitrogen and replace the coil when it is beyond repair.
• Hail-pitted condenser fins: Frequent spring hailstorms, especially in northwest San Antonio, dent and pit the fins on 10-SEER Merit condensers. Pitted fins trap oak pollen and limestone dust, head pressure climbs, and the high-pressure switch trips. We can comb fins when the damage is light and replace coils when it is not.
• Intermittent ECM blower motor failure: Variable-speed Lennox furnaces like the EL296V and SLP98V have ECM motors that do not like attic temperatures above 140°F. July and August heat can cause them to shut down intermittently. You will get a no-heat call in a cool snap or a no-cool call in shoulder season. We test the motor and module before recommending replacement.
• iComfort thermostat Wi-Fi loss after storms: Bexar County thunderstorms bring lightning, and lightning knocks Lennox iComfort thermostats offline. The factory fix is a full reset and firmware update. We handle that, and we also carry replacement thermostats when the board is fried.
• Capacitor failures from constant cycling: San Antonio AC runtimes from May through September are brutal. Capacitors age fast under that load. A bad capacitor usually shows up as a condenser that hums but does not start. We replace Lennox dual capacitors on the spot from truck stock.

Lennox Service in San Antonio: What Local Conditions Mean for Your Equipment

Up in the Braun Station neighborhood off Tezel Road, our tech found a 2012 Lennox ML14XC1 condenser with pitted fins from a March hailstorm and a clogged drain pan. The compressor was short-cycling on high head pressure every afternoon. We replaced the dual capacitor, flushed the drain line, and installed a hail guard. The system held a 22°F delta T on the follow-up visit. That is not a one-off. That is a Tuesday.

In San Antonio’s Hill Country-influenced northwest suburbs, think Helotes, Leon Valley, and the Bandera Road corridor, Lennox condenser hail guards are not optional. Insurance claims after spring hailstorms often require replacement of pitted Lennox coils and damaged fan blades. Our techs photograph the pitting for adjusters before removing a single panel. That documentation is the difference between a covered claim and a denied one. The hail here does not just dent metal. It changes how a Lennox condenser breathes, and that changes everything downstream: head pressure, compressor temperature, cooling capacity. If you live in those neighborhoods, a hail guard costs a fraction of a coil replacement and prevents the exact failure our techs document every spring.

Lennox Models & Products We Service in San Antonio

We service the full range of residential Lennox equipment. On the cooling side, that includes the Merit Series condensers like the ML14XC1 and ML17XC1, the Elite Series EL18XCV, and the Signature Series XC20 and XC25. On the heat side, we work on EL296V and SLP98V furnaces, plus the Dave Lennox Signature Collection heat pumps like the XP20 and XP25. Our part-sourcing approach is specific: we use Lennox OEM capacitors, ignitors, pressure switches, and thermostats because aftermarket boards are a common source of repeat failures on communicating systems. For compressors, blower motors, and coils, we present OEM and quality aftermarket options side by side, with honest pricing on both. The right answer depends on the age of the unit and what San Antonio conditions have already done to it.

Lennox Service Pricing in San Antonio

FAQs – Lennox HVAC in San Antonio

Service Areas Near San Antonio

Our techs run Lennox calls throughout San Antonio, Lennox service in Schertz, Lennox service in Cibolo, Boerne, Kirby, and Floresville. If your Lennox system sits in an attic, a closet, or a slab home in any of these communities, we are already familiar with the layout before we knock on the door.

Book Your Lennox Service in San Antonio Today

When your Lennox system is down, waiting is the expensive part. Call (361) 470-8872 and a live person answers, 24/7. Tell us what is wrong, we will tell you what it costs, and we will get your house back to livable. Same-day service is available in most parts of San Antonio.

Written by Devin Marlowe, Owner at Brandt HVAC Co San Antonio, serving San Antonio since 2003.