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Ameristar Construction in Selma, TX | Mason Remodeling Co San Antonio
We provide independent Ameristar service across Selma, and the honest answer is this: most of the Ameristar equipment we work on here fails because of Selma’s clay soil, hail, and humidity more than anything the manufacturer did wrong. Our crews know the M4 furnaces and M1 condensers inside the suburban homes that fill this city. If you need an Ameristar unit repaired, inspected, or replaced, call (254) 269-5071 for a free estimate.
Why Selma Residents Choose Us for Ameristar Service

We’ve worked on Ameristar equipment in Selma long enough to know what each neighborhood throws at it. Isaac Pruett, who leads our crews, spent two decades swinging hammers across the Southwest before bringing that experience to San Antonio and the Northeast corridor including Selma. The crews he sends out have torn into Ameristar M4 furnaces in 2000s tract builds north of Lookout Road and replaced contactors on M1 condensers in the master-planned communities that have grown up around Retama. The thing that separates us isn’t a logo on a shirt. It’s knowing that a furnace tripping its high-limit switch in a Selma attic in July is rarely a furnace problem. It’s usually airflow or a clogged condensate line made worse by the humidity and dust this part of Texas deals with every summer.
We are an independent Ameristar service provider, not a manufacturer affiliate or authorized dealer. That independence means we recommend repairs based on what the unit actually needs, not what pushes a warranty or a sales quota. Our Ameristar sales & service work focuses on getting Selma homeowners the right fix the first time, with OEM parts where it matters and honest advice when replacement is the smarter spend.
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Common Ameristar Construction Problems We Solve in Selma
Here are the Ameristar-specific failures we see repeatedly in Selma, each one tied to something that actually happens in this city:
- Failed ignition boards and flame sensors on M4 furnaces after spring storms. The thunderstorms that roll up the I-35 corridor in April and May bring power surges that fry ignition boards. We replace the board with an OEM Ameristar part, then test the flame sensor and gas valve so the furnace doesn’t short-cycle two weeks later.
- Condensate drain line clogs on attic-installed air handlers. Selma’s humid summers plus dust from new construction means drain lines clog faster here than in drier parts of Texas. We clear the line, flush it, and re-pitch it if the original install left it pooling.
- Compressor contactor pitting on M1 condensers after hail events. Hail doesn’t just wreck roofs. It shakes condenser units, and the contactor points pit, which is why a unit runs the fan but won’t cool. We replace the contactor with a high-quality part and check the compressor before it takes more damage.
- Heat exchanger cracks on older M4 furnaces in pre-2010 homes. These get discovered during fall startups in Selma’s older subdivisions. A cracked heat exchanger can put carbon monoxide into the home, so we flag it immediately and quote replacement honestly rather than patching it and hoping.
- Condenser pad tilting from expansive clay soil. This is the most Selma-specific problem on this list. Homes near the Cibolo Creek floodplain sit on clay that swells and shrinks with rain and drought, tilting outdoor units and kinking refrigerant lines. We level the pad, re-insulate the lines, and recharge the system.
Ameristar Service in Selma: What Local Conditions Mean for Your Equipment

Selma sits on the Cibolo Creek floodplain, and homes near the creek, especially older ones off Evans Road, have documented slab movement from expansive clay. The same soil that cracks driveways and shifts foundations does something specific to Ameristar outdoor units. As the clay swells after a wet spring and contracts during a dry August, condenser pads tilt. A unit off-level by even a few degrees can starve the compressor of oil, kink the refrigerant lineset, and shorten the lifespan of a system that should run another decade.
We often need to re-level Ameristar outdoor condenser pads and re-pitch drain lines after seasonal soil shifts. Our tech leveled a settling Ameristar M1 condenser on a home off Evans Road where the clay had shifted the pad enough to kink the lineset. We dug out and repoured the pad, re-insulated the lineset, and recharged the system, taking care to meet the HOA’s exterior work rules. The unit was back to full cooling before the week’s first 100-degree day.
This is not a failure mode you will find in an Ameristar brochure or a generic San Antonio contractor page. It is a Selma problem, and it requires knowing both the equipment and the ground it sits on.
Ameristar Models & Products We Service in Selma
We work on the Ameristar equipment most common in Selma’s housing stock:
- Ameristar M4 series single-stage gas furnaces – the workhorse of 2000s tract homes across Selma.
- Ameristar M1 series air conditioners and heat pumps – standard in newer master-planned communities.
- Ameristar A4 series air handlers – attic-installed units we flush and re-pitch regularly each summer.
- Ameristar packaged rooftop units (M4 and M1 series) – common on the light commercial builds along the I-35 corridor.
For critical safety components like heat exchangers, gas valves, and control boards, we default to OEM Ameristar parts. For commodity items like capacitors and contactors, we use high-quality aftermarket equivalents when OEM lead times stretch. On units over 12 years old with a failed heat exchanger or compressor, we give an honest repair-versus-replacement quote based on remaining lifespan and efficiency, not a scare pitch.
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AfterAmeristar Service Pricing in Selma

What you’ll pay depends on what failed and whether the Selma climate had a hand in it. Here are the line-item price ranges we quote most often in this area:
| Service | Typical Selma Price Range |
|---|---|
| Emergency HVAC repair (after-hours) | $250 – $900 |
| Condenser pad replacement and leveling | $400 – $1200 |
| Condensate drain line flush and re-pitch | $150 – $350 |
| Roof inspection after hail storm (joint HVAC/roof work) | $200 – $500 |
| Furnace heat exchanger replacement | $1200 – $2500 |
What drives the cost here in Selma: access to the unit, HOA scheduling restrictions on exterior work, and whether the soil has shifted a pad enough to require re-pouring. Your free estimate includes a written line-item price before any work starts. Call (254) 269-5071 to schedule yours.
Serving Selma, TX - Our Local Coverage Area
We’re based in the Selma 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 – Ameristar Construction in Selma
Yes, and it’s usually not the furnace itself. The high-limit switch trips when the furnace gets too hot, which in Selma attics often means a clogged condensate line backing up, a dirty filter restricting airflow, or undersized ductwork in a tract home from the early 2000s. We check the airflow first, clear the drain line, and only then look at the switch. Call (254) 269-5071 and we’ll diagnose it.
You’re describing a pitted or stuck contactor, the electrical switch that sends power to the compressor. Hail shaking the unit plus the power flickers that come with Selma storms are the usual cause. Don’t try to force the contactor yourself since you’re working near live capacitor electrical components. We replace the contactor and test the compressor before we leave. Call (254) 269-5071 for same-week service.
The condensate drain line is clogged or the pan is cracked, and Selma’s humid summers plus construction dust make clogs a regular occurrence. In a typical August, the unit is pulling gallons of moisture out of the air, and if the line can’t drain, water backs up and stains your ceiling. We flush the line, check the pan, and re-pitch if needed. Call (254) 269-5071 and we’ll get it dry.
Yes. A tilted pad stresses the compressor, kinks the refrigerant lines, and shortens the equipment’s life. The expansive clay near Cibolo Creek is notorious for this in Selma. We dig out the old pad, repour a level one, re-insulate the lineset if it’s been stressed, and recharge the system. Call (254) 269-5071 for an inspection before it fails mid-summer.
Yes. We install OEM Ameristar parts covered by your manufacturer warranty and handle the paperwork so you get the covered components at the right cost. The labor is billed separately. We are independent, not manufacturer-authorized, which means we choose parts based on what the unit needs. Call (254) 269-5071 and we’ll check your warranty status before any repair.
Service Areas Near Selma
We serve Selma and the surrounding communities in the Northeast San Antonio development belt. Our Selma service area includes work along the I-35 corridor and nearby neighborhoods. For homeowners a bit further out, see our Ameristar service in San Antonio and Ameristar service in Boerne. We also handle Terrell Hills, Cibolo, and Leon Valley.
Book Your Ameristar Service in Selma Today
If your Ameristar furnace, AC, or heat pump is acting up, call (254) 269-5071. We’ll send a background-checked, uniformed technician whose name and photo you receive before the visit. You’ll get a written price before any work starts, and the 365-Day Done Right Promise covers you for a full year. Know who’s coming, know what it costs, know it’s covered, that’s the whole job before the job starts.
Written by Isaac Pruett, Owner at Mason Remodeling Co San Antonio, serving Selma since 2004. Learn more about our General Contractor in Selma.











