Seasonal 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.
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AfterFast, Reliable Furnace Repair Across Alamo Heights
Most furnace repairs in Alamo Heights run $150-$700 and are completed in a single visit, with our Furnace Repair team dispatching from our San Antonio office to reach Alamo Heights homes the same day you call. When your furnace quits on a January night or your blower starts making that grinding noise at 2 a.m., a live person answers our phone, every hour of every day, and we give you a written arrival window we intend to keep.
We’ve worked on heating systems in Alamo Heights long enough to know the real problem is rarely just a bad part. The limestone homes built along Broadway, Terrell Road, and Alamo Heights Boulevard from the 1920s through the 1950s carry original ductwork that was never designed for modern forced-air equipment. A furnace that “blows cold air” often turns out to be a system starved by undersized returns or collapsed attic ducts. We fix the airflow, not just swap the igniter, and we put that diagnosis in writing before any work begins.
Call (817) 402-2972 now. Estimates are free, and our 365-Day Done Right Promise covers every repair we make.
Why Coldharbour Heating & Air Is Alamo Heights’s Preferred Furnace Repair Company
We’ve been part of the Kingswell network since 2003, and our independently owned operation has built a reputation in Alamo Heights by showing up when we say we will and standing behind our work for a full year. Homeowners here have told us the same story too many times: a technician arrives late (or not at all), quotes one price on the phone and another at the door, and disappears when the “fixed” furnace fails again in three weeks. That is not how we operate.
Our technicians are background-checked, uniformed, and trained on nine major residential brands including Trane, Lennox, Goodman, and Rheem. More importantly, they know Alamo Heights. They understand that a repair on a 1935 limestone estate near the Quarry Golf Club requires a different approach than a service call on a 1960s ranch off Nacogdoches. They know to check the Alamo Heights Building Department permit status before touching gas lines, because we’ve seen outside contractors red-tagged for skipping that step.
The Kingswell Way governs every visit: we say the price before the work starts, show up in the window given, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails. No exceptions.
Boiler Repair in Alamo Heights
Boiler Repair in Alamo Heights addresses hydronic heating systems that circulate hot water through radiators, baseboard convectors, or in-floor tubing, common in the older homes north of Broadway where original 1920s and 1930s systems still run. A typical boiler repair here costs $200-$700, covering circulator pump replacement, aquastat calibration, zone valve repair, or thermostat troubleshooting. These systems reward patience: the cast-iron heat exchangers in many Alamo Heights boilers have decades of life left if the controls and pumps are maintained properly.
Signs Your Boiler Needs Attention
Listen for knocking or gurgling in pipes, which usually means airlocked zones or failing circulator. Uneven heating between rooms, especially in homes with added wings or second stories, often points to a stuck zone valve or sludge buildup in older piping runs. We test combustion efficiency and check expansion tank pressure before recommending any part replacement.
Boiler vs. Furnace: What Alamo Heights Homes Have
If your home has radiators or baseboard units, you have a boiler. If you have floor vents and a single central unit, you have a furnace. We’ve encountered both in Alamo Heights, sometimes in the same house where a previous owner added a furnace to an upstairs addition while the original boiler still heats the downstairs. We service both systems and can advise when it makes sense to integrate or separate them.
Gas Furnace Repair in Alamo Heights
Gas Furnace Repair in Alamo Heights covers the forced-air heating systems found in most homes built from the 1940s onward, whether original gravity-fed conversions or modern high-efficiency units. A standard gas furnace repair here, from diagnostic through igniter or capacitor replacement, runs $150-$700. A gas furnace safety inspection with full heat exchanger testing costs $150-$350. We perform combustion analysis on every gas repair to verify safe carbon monoxide levels, and we never return a system to service with a cracked or corroded heat exchanger.
The Gravity Furnace Legacy
Many Alamo Heights homes still contain ductwork from original gravity furnaces, coal or oil conversions that relied on natural convection rather than blower-driven airflow. When a modern gas furnace is shoehorned into that infrastructure without proper load calculation, the result is chronic high static pressure, overheated heat exchangers, and premature failure. We measure actual airflow and static pressure before declaring any repair complete.
Gas Valve and Burner Service
Intermittent ignition, yellow or flickering burner flames, or a gas valve that sticks open or closed are safety issues we treat with zero tolerance. We carry common gas valve and ignition control modules for Trane, Lennox, Goodman, and Rheem systems, and we verify proper manifold pressure and flame sensor microamps before leaving your home.
Trusted Brands We Service in Alamo Heights
Our technicians train continuously on Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard equipment, and we stock the most common failure parts for Trane, Lennox, Goodman, and Rheem systems locally. That means when your 20-year-old Rheem in an Alamo Heights Tudor loses its blower motor on a Saturday evening, we are not ordering parts from Dallas on Monday morning. We carry capacitors, igniters, flame sensors, and blower motor modules for these brands on every truck, and our San Antonio parts depot supports same-day or next-morning availability for less common components. The goal is one visit, one fix, one written guarantee.
Common Furnace Repair Problems We See in Alamo Heights Homes
- Cracked heat exchangers in converted gravity systems. Original 1940s furnaces retrofitted to forced air without proper airflow redesign run so hot that heat exchangers crack within seasons, not decades. We test with visual inspection, combustion analysis, and borescope where access allows, and we red-tag systems that cannot be returned to safe operation.
- Duct leakage into limestone wall cavities. The masonry construction common in Alamo Heights creates unintentional air paths into unheated wall spaces. Your living room reaches 72°F while the back bedroom stalls at 62°F, and homeowners blame the furnace when the real culprit is ductwork that was never sealed properly during a 1980s renovation.
- Undersized returns starving blower motors. Original duct chases designed for gravity airflow cannot deliver the return air volume a modern blower needs. The motor overheats, capacitors fail repeatedly, and the system locks out on high-limit. We measure static pressure across the filter and coil to confirm the diagnosis before replacing another failed capacitor.
- Permit problems with outside contractors. Because Alamo Heights is an independent municipality entirely surrounded by San Antonio, furnace permits must be pulled through the Alamo Heights Building Department, not COSA. Contractors who assume San Antonio jurisdiction can stall a repair for weeks and leave homeowners without heat while paperwork gets sorted. We pull permits correctly the first time.
Pricing for Furnace Repair in Alamo Heights, TX
We believe you deserve to know what furnace repair costs before a technician crosses your threshold. Here is what we charge in Alamo Heights:
| Service | Price Range |
|---|---|
| Furnace repair diagnostic & igniter/capacitor replacement | $150-$700 |
| Gas furnace safety inspection & heat exchanger test | $150-$350 |
| Boiler repair (circulator, aquastat, thermostat calibration) | $200-$700 |
What moves a repair toward the higher end? Access difficulty in tight limestone-wall chases, multiple failed components discovered during diagnosis, or the need for permit coordination with the Alamo Heights Building Department. What keeps it lower? Catching a failing capacitor before it takes out the blower motor, or scheduling a safety inspection before heating season begins. We hand you a written price before any work starts, and that price does not change when the job is done. Call (817) 402-2972 for your free estimate.
We Also Serve Cities Near Alamo Heights
Our Alamo Heights crews also respond to heating emergencies across Houston, San Antonio, Dallas, and Fort Worth, with the same written pricing, same 365-Day Done Right Promise, and same live-answer phones at every location. Dispatch and scheduling for Alamo Heights are coordinated from our San Antonio office.
Serving Alamo Heights, TX - Our Local Coverage Area
We’re based in the Alamo Heights 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 About Furnace Repair in Alamo Heights
Probably not. In Alamo Heights, this symptom usually traces to airflow problems, not furnace failure. Undersized returns, duct leakage into limestone cavities, or collapsed attic insulation on duct runs starve rooms of heated air while the furnace itself runs fine. We measure static pressure and perform a room-by-room temperature survey before recommending any equipment replacement. Call (817) 402-2972 for a free diagnostic.
Yes, and this is where many contractors stumble. Because Alamo Heights is an independent municipality entirely surrounded by San Antonio, all furnace permits must be pulled through the Alamo Heights Building Department, not COSA. We handle permit paperwork on every job that requires it, and we verify permit status before relighting gas lines or returning a system to service. Skipping this step can result in red tags and weeks without heat.
Repeated blower motor or capacitor failure almost always indicates high static pressure from undersized ductwork. Original 1940s gravity duct chases were never designed to move the air volume a modern furnace demands. The motor works harder, runs hotter, and burns through capacitors every two or three years. Replacing the motor without addressing airflow is throwing money away. We measure total external static pressure and recommend duct modifications where needed.
Yes. Our technicians are trained and equipped for both hydronic boiler systems and forced-air gas furnaces, common in Alamo Heights where original boilers in 1920s homes sometimes coexist with later furnace additions. We carry circulator pumps, aquastats, zone valves, and ignition controls for both system types. Call (817) 402-2972 to schedule whichever system needs attention.
Most furnace repairs in Alamo Heights fall between $150 and $700, with gas furnace safety inspections and heat exchanger testing at $150-$350. Boiler repairs run $200-$700 depending on component access and parts needed. We provide a written, itemized price before any work begins, and our 365-Day Done Right Promise covers every repair at no additional charge if it fails within that window. Call (817) 402-2972 for your free estimate.
Written by Victor Mancini, Owner at Coldharbour Heating & Air, serving Alamo Heights since 2003.