San Antonio, TX, Reliable Furnace Repair and Maintenance Services

Call Christianson Air Conditioning and Plumbing at 210-236-4838 for trusted furnace repair, seasonal furnace tune-up services, and ongoing furnace maintenance in San Antonio, TX.

Christianson Air Conditioning and Plumbing has helped keep homes warm across San Antonio, TX, since 1950. As a full-service furnace maintenance company and furnace repair company, we work on gas, oil, and electric systems in neighborhoods from Alamo Heights and Downtown to Stone Oak and the Far West Side. Our licensed furnace contractors provide detailed inspections, expert furnace repair, and tailored maintenance plans, backed by straightforward pricing, membership plan options, and 24-hour emergency service for urgent heating problems.

Looking for year‑round comfort and efficiency? Explore our Heat Pump Services to see how we keep homes in San Antonio, Schertz, and New Braunfels comfortable year-round with the latest technology.

Greater San Antonio Furnace Troubleshooting Services

furnace-repairWhen your furnace starts acting up on a cold San Antonio night, you need answers quickly. Strange noises, weak airflow, or short cycling can have many different causes, and guessing often leads to repeated breakdowns. Our technicians bring deep experience with both older systems in King William and Monte Vista and newer equipment in growing areas like Bulverde and Far West Side.

Common problems our furnace troubleshooting pinpoints and resolves:

  • No heat or low heat: Ignition failures, fuel delivery issues, or failed heating elements
  • Short cycling: Oversized units, airflow restrictions, or safety switches tripping
  • Unusual noises: Rattling, squealing, or banging from loose or failing components
  • Burning or musty odors: Dust buildup, wiring issues, or venting problems
  • Uneven temperatures: Duct design issues, weak blowers, or zoning problems
  • Rising energy bills: Inefficiency from worn parts, dirty filters, or poor combustion

By methodically checking controls, airflow, venting, and safety devices, we identify the root cause rather than just treating symptoms, helping your furnace run more reliably through every South Texas cold snap.