Lennox HVAC in San Antonio, TX

Lennox HVAC in San Antonio, TX | Halden Heating and Air San Antonio

We provide independent Lennox service across San Antonio, handling everything from a blown capacitor on a Merit Series unit to full variable-capacity system diagnostics. If you need our AC Repair in San Antonio, we know which parts fail in this specific heat and humidity, and we stock for it. The thing that makes our Lennox work here different is simple: we know which parts fail in this specific heat and humidity, and we stock for it. If your Lennox system is down right now, call (903) 623-6784 and you’ll get a live person, not a voicemail tree.

Call (903) 623-6784

Halden Heating and Air San Antonio is part of the Relay Home Co. network, so every visit starts with a written price before anyone picks up a tool. No hour-long window guessing. No door-step surprises. Andre Fuller built this company on one rule he’s never bent: tell the customer the price before the toolbox opens. We handle Lennox sales & service with the same honesty, whether you need a repair, a seasonal checkup, or a straight answer about whether that 15-year-old system is worth saving.

Why San Antonio Residents Choose Us for Lennox Service

We see Lennox units every single week in San Antonio, from newer EL18XCV installs in far north subdivisions to SLP98V furnaces in older Alamo Heights homes. That repetition means our techs know the failure patterns before they even open the panel. A variable-speed blower module that trips after a dusty spring? We’ve replaced dozens. A condensate line clogging up in August because the humidity won’t let up? That’s a Tuesday for us.

Andre started turning wrenches after training at Los Angeles Trade-Technical College, then spent more than 25 years diagnosing systems in all kinds of buildings. He and our crew have worked on plenty of Lennox equipment near the Pearl District, where older structures and brutal Texas summers combine to push every component to its limit. When a homeowner calls us about an intermittent no-cool that two other companies couldn’t figure out, we treat it like the puzzle it is. We’re an independent Lennox service provider, not manufacturer-affiliated, so repair decisions come down to honest economics. If a part should be OEM, we say so and explain why. If replacement makes more sense than another patch job, we give you the numbers and let you decide.

Common Lennox HVAC Problems We Solve in San Antonio

• Blower motor module failures on SLP98V and EL296V furnaces. San Antonio’s dusty spring, especially during cedar fever season, pulls fine grit into the blower compartment. That grit settles on the module and causes short-cycling faults. We replace with Lennox-approved OEM modules so the variable-speed logic still works the way it should.
• Evaporator coil freezing on XC25 and EL18XCV air conditioners. Homes in Alamo Heights and Olmos Park built before 1960 often have undersized returns. A variable-capacity AC trying to move air through a 14-inch return will freeze the coil on a 100-degree afternoon, even with a full refrigerant charge. The fix is airflow correction, not just more refrigerant.
• Condensate drain clogs on Merit Series units. The shallow pans on ML14XC1 and ML180E equipment overflow when San Antonio’s summer humidity sits above 70% for weeks. A slow-draining pan breeds algae, then backs water into the secondary pan. We clear the line, treat the pan, and check the float switch so you’re not dealing with a wet ceiling.
• Pressure switch trips on 90%+ Lennox furnaces. Cedar pollen and construction dust collect in flue pipes over time. When the intake or exhaust gets partially blocked, the pressure switch opens and the furnace locks out. We see this most often in north and west San Antonio tract homes built in the 1970s and 80s, where flue runs are long and routing is tight.
• Compressor contactor failures during heat waves. In a San Antonio July, the outdoor unit runs nearly nonstop from 2 PM to 9 PM. Contactors on Lennox single-stage condensers take a beating from that duty cycle. We stock high-quality replacements matched to OEM spec, so we can usually have you cooling again the same day.

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

Here’s the thing most generic HVAC pages won’t tell you. In San Antonio’s Alamo Heights and Olmos Park neighborhoods, homes built before 1960 often rely on undersized return ducts and unsealed radiant barriers. When a Lennox variable-capacity condenser like the XC25 senses a big temperature gap between setpoint and room temp, it ramps up to high stage, expecting the airflow to keep pace. But if the return can’t pull enough air, the evaporator coil drops below freezing and ices over. The unit keeps trying, the coil keeps freezing, and the homeowner keeps calling for recharge after recharge that doesn’t fix it. Ten miles out in the north-side tract sprawl, where return sizing is more generous and homes are newer, the same Lennox model rarely has this problem. That’s San Antonio specific. A tech in Dallas or Austin with less time in these older neighborhoods might miss it entirely. Andre Fuller has spent years responding to exactly this pattern, and our crew knows to check the return side before blaming the refrigerant.

Here’s a recent example. Our tech pulled apart a Lennox XC25 in Alamo Heights last July. The homeowner had two rooms that never got below 85 degrees, even with the system running all afternoon. The variable-capacity outdoor unit was locked into high stage because the original 14-inch return was strangling airflow. We rebuilt the return drop, sealed the plenum, and rebalanced the zone dampers. Now the system holds 71 degrees at 50% humidity without freezing the coil. Straight answer, written price, no runaround.

Lennox Models & Products We Service in San Antonio

We work on the full Lennox lineup, from the high-end SLP98V and EL296V variable-speed gas furnaces to the XC25 and EL18XCV variable-capacity air conditioners, and we also handle AC Installation in San Antonio when replacement makes sense. The Merit Series, including the ML14XC1 condenser and ML180E furnace, is common in San Antonio’s 1980s tract homes, and we service plenty of them. We also handle Lennox Healthy Climate pure air filtration and whole-home dehumidifiers.

For critical components like variable-speed motors and inverter boards, we install only Lennox-approved OEM parts. Aftermarket substitutes often miss the tight tolerances those systems depend on. For wear items like contactors and capacitors, we offer high-quality alternatives when they clearly match OEM spec. We keep common Lennox repair parts stocked locally, so San Antonio turnaround doesn’t depend on a warehouse across the state.

Lennox Service Pricing in San Antonio

FAQs – Lennox HVAC in San Antonio

Service Areas Near San Antonio

We run Lennox service calls across the San Antonio metro. If you’re in San Antonio service area, Universal City, Timberwood Park, Leon Valley, or Helotes, you’re in our regular coverage zone. We also handle Lennox service in Universal City and Lennox service in Timberwood Park with the same written pricing and live phone support.

Book Your Lennox Service in San Antonio Today

Call (903) 623-6784 and you’ll talk to a real person, any hour of the day. We’ll get you on the schedule with a live arrival time you can track, and we’ll put the price in writing before any work starts. If it’s an emergency, we get it. San Antonio heat doesn’t wait for business hours.

Written by Andre Fuller, Owner at Halden Heating and Air San Antonio, serving San Antonio since 2004.