Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Get your free estimateLennox AC Maintenance in San Antonio: What to Know First
Lennox AC maintenance in San Antonio typically runs $80 – $200 for a full tune-up, and we can usually get a Brandt HVAC Co San Antonio technician to your home within a day or two, not weeks. We are an independent Lennox service provider, which means we work on your system without being tied to any manufacturer’s sales targets. Call (361) 470-8872 and you’ll get a live person who can schedule the visit and tell you exactly who is showing up, by name and photo, before they arrive.
This page is for San Antonio homeowners who own a Lennox air conditioner and want to know what maintenance actually matters here, what it costs, and what to expect when a technician walks through the door. If you’re trying to decide whether your Lennox needs a tune-up, a repair, or a replacement, keep reading. We’ll name the real failure points, the real prices, and the real process.
How Lennox Products Fail – and How We Fix Them
- XC and XP series condenser coils develop pinhole leaks faster than most owners expect. Lennox coils are efficient, but they’re built thin. After six or seven San Antonio summers, the constant heat cycling and humidity can cause micro-leaks at the coil’s return bends. We find these leaks with a nitrogen pressure test and electronic leak detector, then repair or replace the coil, not just top off the refrigerant. Topping off a leaking system without fixing the leak is a waste of your money.
- Elite and Merit series air handlers are prone to blower motor capacitor failure. A capacitor is a small cylinder that gives the blower motor its starting jolt. In San Antonio’s heat, these fail often. The symptom is usually a humming sound from the air handler or a system that won’t push air. A capacitor replacement is a $150 – $350 job, parts and labor included, and most are done the same day.
- Dirty evaporator coils hit Lennox systems hard in San Antonio’s humidity. San Antonio’s air carries a lot of moisture and pollen. Over a season, that builds up on the evaporator coil, which is the part that absorbs heat from your home’s air. A dirty coil makes the system run longer, freeze up, or just stop cooling well. We clean coils with a foaming cleaner and rinse them properly, never just brushing off the surface.
- Drain line clogs are the most common call we get on Lennox systems in San Antonio. The condensate drain line carries condensation out of your air handler. Texas heat means constant condensation. Algae and mold grow in the line and clog it, which trips the float switch and shuts the system down. We clear the drain, flush the line with a proper cleaning solution, and check the float switch so your system doesn’t water-damage your home.
- Compressor contactor wear on outdoor condensers is a known Lennox weak point. The contactor is the electrical switch that turns the outdoor unit on and off. Over time, the contacts arc and pit. Eventually the compressor won’t start. We check the contactor’s resistance and visual wear on every maintenance visit, and we replace it before it leaves you without cooling on a 102-degree afternoon.
Styles & brands we work with
Our Lennox AC Maintenance Process
- 1
You call and book the visit. A live person answers, takes your address and system details, and schedules the window. Before the technician arrives, you get their name, photo, and background-check confirmation through our Threshold Verified standard. When they ring the bell, they’ll show you the same photo ID.
- 2
We inspect the full system, not just the filter. The technician checks the outdoor condenser, the indoor air handler, the refrigerant pressures, the blower, the electrical connections, the drain line, and the thermostat. On a Lennox, we also pull the service panel and look for bulletin-listed issues specific to your series.
- 3
We show you the findings and give you a written price before any work. If we find something failing, you get the exact cost on paper. No work starts until you say yes. If it’s fine, we tell you it’s fine. We don’t invent problems to sell parts.
- 4
We make the repair or replacement with the right parts. For warranty-covered Lennox components, we order OEM parts so you keep your coverage. For out-of-warranty parts, we offer quality aftermarket options and explain the trade-off in plain language so you decide.
- 5
We test the system under load. We run the AC through a full cycle, measure the temperature drop across the coil, and confirm the pressures are where Lennox specifies. We won’t call the job done until the system is pulling the numbers it should.
- 6
You get a written report and a written guarantee. The report shows what we checked, what we found, and what we did. Any repair includes a 365-day guarantee. If it fails within a year, the return visit is free. That’s the 365-Day Done Right Promise.
See the difference
Before
After
Before
After
Before
AfterWhat Lennox AC Maintenance Costs in San Antonio
A full Lennox AC tune-up in San Antonio runs $80 – $200 at Brandt HVAC Co San Antonio. That includes the inspection, coil cleaning, drain flush, electrical connection tightening, and a written report. If the tune-up turns up a failing part, most common Lennox repairs land between $150 and $650, parts and labor included.
What moves the price is the part and the series. A blower motor capacitor on a Merit series is quick and inexpensive. An expansion valve on an XC series is more involved. Variable-speed systems like the XC25 tend to cost more to repair than single-stage units because the components are more specialized. Every job gets a written price before we start, so there are no surprises at the end.
Call (361) 470-8872 for a free estimate. We’ll tell you what we think it needs, what it costs, and whether a tune-up or a repair is the smarter money.
Why San Antonio Homeowners Call Brandt HVAC Co San Antonio for Lennox Work
Most San Antonio HVAC companies will work on a Lennox. Fewer can tell you the difference between an XC20 and an XC25 and why that matters for your repair bill. Devin Marlowe and our crew have been running Lennox-specific service calls throughout San Antonio for years, from Alamo Heights to Helotes to the growing subdivisions across the far north side. When we see a Lennox condenser that’s short-cycling on a July afternoon, we know what to check first.
We also service Carrier and Trane, which means we’re not brand-loyal to the point of blindness. If a Lennox part is backordered and a quality aftermarket option is available, we’ll tell you. If your Lennox is fifteen years old and the repair is $900, we’ll be honest about what replacement looks like instead.
Every visit starts with a written price. Every repair includes a written guarantee. The person at your door is the same person from the photo we sent, badge shown, name on the ID. It’s how we’ve been doing it since 2003, and it’s why homeowners who call once tend to call again.
FAQs
Yes. We’re an independent Lennox service provider, not a dealer, so we don’t process manufacturer warranty claims directly. But we do perform warranty-compliant maintenance and repairs, which means your Lennox factory warranty stays intact when we work on the system. If a covered part fails, we document it properly and use OEM parts so you can file the claim with your documentation in order.
For maintenance and tune-ups, we schedule within a day or two in most San Antonio neighborhoods. For a failed system during a heat wave, we treat it as an emergency and bend the schedule to get a technician out as quickly as possible. Call (361) 470-8872 and the live person who answers can give you the next available window while you’re on the phone.
The rule we use is simple: if the repair is less than a third of the cost of a new system and the system is under ten years old, repair usually makes sense. If it’s past twelve years and the compressor or coil is failing, replacement often saves money over the next two years. In San Antonio, where ACs run hard for eight months a year, that math tends to favor replacement sooner than in cooler climates. Call us for an honest read on which way to go.
OEM parts are made to Lennox’s exact spec and are usually required to keep a factory warranty valid. Aftermarket parts are built by third-party manufacturers and often cost 20 – 40% less. For failure-prone parts like contactors and capacitors, a quality aftermarket part can be just as reliable as OEM. For compressors, coils, and control boards, we almost always recommend OEM. We’ll price both and explain the trade-off before you decide.
You can, and plenty of San Antonio homeowners do. But skipping maintenance on a Lennox costs more over time. A clogged drain line that takes $100 to clear in May becomes a $600 water damage repair in August if it backs up into the house. A worn contactor that would’ve been caught in a tune-up becomes a no-cooling call at 2 a.m. The $80 – $200 tune-up is the cheapest insurance on your home’s cooling system. We’ll tell you what we find and what it costs, and you decide. Tell me what’s wrong, I’ll tell you what it costs, and we’ll get your house back to livable.
Written by Devin Marlowe, Owner, Brandt HVAC Co San Antonio at Brandt HVAC Co San Antonio, serving San Antonio and nearby areas.