Open now · 24/7 Emergency Line Licensed Master Plumber #42122 · TDLR HVAC #TACLA00160134C
Service@abaoneplumbing.com Mon–Sat 7am–8pm · 24/7 Emergency
ABA ONE Plumbing, Heating & Air
HVAC

HVAC services in Katy, TX.

TDLR HVAC license #TACLA00160134C. When AC dies on a 100° day, we put you ahead of the routine calls. Manual J load calcs done right on every full system replacement.

ABA ONE service
Texas Master PlumberRMP/MAPGAS #42122
TDLR HVAC Licensed#TACLA00160134C
4.9★ on Google47+ verified reviews
16+ YearsServing Katy & West Houston
Same-Day Service24/7 Emergency Line
What We Cover

AC and heat, diagnosed with gauges — not guesswork.

Services in this category

AC Repair

Bad capacitor, low refrigerant, frozen coil, blower motor giving out. We diagnose with gauges and an amp meter, not guesswork. AC-down calls in summer get bumped to the front of the queue.

  • Same-day
  • Diagnostic
  • All brands

AC Installation

Trane, Carrier, Lennox, Goodman. Manual J load calculations so the system is sized right (oversized AC short-cycles and stays humid; undersized never catches up). Full warranty registration handled.

  • Install
  • Replace
  • Efficient

Heating Services

Texas winters are short but the furnace still needs to fire on a 28° morning. Igniter swaps, heat exchanger inspection, gas valve replacement, full furnace replacement, dual-fuel heat pump conversions.

  • Furnace
  • Heat pump
  • Boiler

Mini Splits

Mitsubishi, Daikin, Fujitsu mini-splits. One-room additions, garage conversions, that bonus room over the garage that’s always 10° hotter than the rest of the house.

  • Single
  • Multi-zone
  • Add-on

Thermostats

Ecobee, Honeywell T-series, Nest. Multi-zone setups when one thermostat can’t handle two-story houses. We program it before we leave so you’re not staring at the manual.

  • Smart
  • Zoning
  • Setup

Maintenance

Spring AC tune-up: clean coils, check refrigerant, test capacitors, flush condensate line. Fall furnace tune-up: clean burners, check heat exchanger, test safety switches. About $150-200 each, saves $$$$ on emergency calls.

  • Spring
  • Fall
  • Annual
Why Choose ABA ONE

When the AC quits, you want a Texas-licensed crew on the way.

Same-day dispatch, real diagnostics, honest options.

TDLR-licensed HVAC

Not a plumber moonlighting on AC — a licensed HVAC contractor (#TACLA00160134C) trained on refrigerant and load calcs.

AC-down jumps the queue

100° and no cold air? You go to the front of the line. Most summer calls reached in 60–90 minutes.

Sized right, not upsold

A Manual J load calc on every install, so you don’t get oversized equipment that short-cycles and leaves the house humid.

$49 to diagnose

Flat fee, credited to the repair. We find the actual fault before quoting a single part.

Our Process

How an ABA ONE service call actually works.

Tell us the symptoms

No cold air, a weird noise, water by the furnace? We triage AC-down emergencies to the front in summer.

Gauge-and-meter diagnostic

Refrigerant pressures, capacitor and amp-draw checks, coil inspection — $49 flat. We find the real cause.

Repair vs. replace, in writing

Honest numbers on both. On a new system you get a Manual J load calc, not a rule-of-thumb guess.

Verified & registered

We confirm the temperature split, register your warranty, and clean up before we leave.

Need HVAC help in Katy?

Licensed techs. Upfront pricing. Same day.

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