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Fast, Reliable Heat in the Rio Grande Valley

Heating System Repair & Troubleshooting

When your furnace won’t ignite, the heat pump blows cool air, or the blower won’t run, you need a heating repair pro in the RGV who finds the cause—not just the symptom. Treviño Repairs services gas furnaces, heat pumps, electric air handlers/heat strips, and ductless mini-splits. We isolate electrical, airflow, fuel/combustion, or refrigerant issues, make a clean, code-compliant repair, and verify safe operation before we leave—so your home or business stays warm on cool Valley nights. If you smell gas, leave the area and contact your gas utility or emergency services first.

Warmth Restored—RGV Wide

Services for Heating System Repair

We start with targeted diagnostics to separate electrical/controls, airflow/drain, fuel/combustion, and (for heat pumps) refrigerant problems. Then we repair what’s failed, correct the root cause, and confirm safe, efficient operation—no guesswork.

We service:

Gas furnaces (80% & 90+% condensing)
Heat pumps (heating mode) & dual-fuel systems
Electric air handlers/heat strips
Ductless mini-splits (heating) and light commercial package units

Electrical & controls:

Breakers/fuses, transformer & low-voltage shorts
Control boards, relays/contactors, capacitors, thermostat & sensor wiring

Gas furnace components:

Hot-surface igniters, flame sensors (clean/replace)
Pressure switches/hoses, inducer motors, vent blocks
Limit/rollout switches, burners, gas valves
Condensing furnace condensate traps/drains and intake/exhaust issues

Heat pump & strip heat:

Defrost control, reversing valve, outdoor fan motors
Capacitors/contactors, crankcase heaters
Aux/strip heat relays & elements, sequencers

Airflow & indoor side:

Filters, blower motors/ECM, belts, blower wheels
Dirty/restricted indoor coils, duct restrictions/leaks

Safety & code checks (as applicable):

Combustion/venting review and CO considerations
Gas leak/pressure tests; electrical terminations torqued to spec
Condensate safeties, clearances, and proper shutdowns

Surge protection for outdoor units and maintenance planning available when helpful.

Heating Repair vs. Tune-Up — What’s the Difference?

A repair targets the fault stopping heat now—failed igniter or flame sensor, tripped limit, inducer or blower motor issue, defrost/control fault, bad capacitor/contactor, or aux heat failure. We fix the part and the cause (dirty burners, blocked vent, clogged filter, wiring problem) and verify performance. A tune-up is preventive: burner cleaning/inspection, temperature-rise check, drain/condensate service on 90+ furnaces, electrical testing, airflow/static measurements, and (for heat pumps) charge/performance checks. If you have no heat, start with repair diagnostics; if it runs but underperforms—or it’s been a year—book a tune-up.

Know the Warning Signs in the Rio Grande Valley

When to Schedule Heating Repair

No heat or lukewarm air, furnace short-cycling, frequent breaker trips, outdoor unit frosting without defrost recovery, burning or gas odors, loud start-ups or grinding/blower squeal, repeated igniter or flame-sensor faults, thermostat won’t reach setpoint, or rising winter bills are all red flags. Water under a 90+ furnace, a tripping float switch, or soot/rust near the burner/vent also need attention. Treviño Repairs will isolate the issue and restore safe, reliable heat for your RGV home or business. If you smell gas, leave and contact your gas utility first.

What to Expect with Treviño Repairs

Our Heating Repair Process

Assess & Triage. Confirm symptoms, model details, and recent work; verify thermostat calls and basic power/fuel.
Protect & Prep. Shoe covers, drop cloths, safe disconnects/shutoffs, and neat panel removal.
Electrical & Controls. Test breakers/fuses/transformer, check board/relays, capacitors/contactors, sensors, and thermostat circuits.
Airflow & Safety. Inspect filter/returns, blower and wheel, measure static pressure; verify safeties (limit/rollout/float).
Fuel/Combustion or Heat Pump.
- Furnace: inspect burners/igniter/flame sensor, inducer & pressure switch, venting/combustion air; check temperature rise.
- Heat pump: verify defrost logic, reversing valve operation, outdoor fan, and performance (superheat/subcooling where applicable).
Repair & Verify. Replace failed components, clear drains/vents, correct wiring, set blower speed; confirm steady operation and quiet run.
Clean Up & Walkthrough. Tidy the area, review findings/prevention tips, and provide clear next-step options.

Real Stories. Real Results.

What Our Customers Are Saying

Heating System Repair Questions, Answered

Straightforward answers before you book—symptoms, costs, fixes.

Why does my furnace keep shutting off after a few minutes?

Often a limit switch is opening from overheating (dirty filter/coil, weak blower, blocked vents) or a control/pressure-switch issue. We check airflow, safeties, and combustion.

My heat pump runs but blows cool air—normal?

Heat pumps deliver gentler supply temps than furnaces, but persistently cool air can mean defrost or reversing-valve problems, low airflow, or charge issues. We test and verify.

I replace the igniter every year—what’s wrong?

Igniter failures can be caused by over-firing, contamination, or improper handling; we verify gas pressure, temperature rise, and burner alignment to stop the cycle.

Water under my furnace—should I be worried?

On 90+ condensing furnaces, a clogged condensate trap/drain or venting issue is likely. We clear the drain, check traps and hoses, and verify safe condensate routing.

Do you carry common parts?

Yes—capacitors, contactors, igniters, sensors, some motors/relays. Specialty boards/motors may require a follow-up; we install a safe temporary solution when appropriate.

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(956) 625-9034