Mr. Cool AC & Heating is a family-owned heating and air conditioning company directed by Walter Umanzor. We've been keeping Cypress and Northwest Houston homes comfortable since 1979 — more than 45 years of serving Houstonian neighbors with the same commitment to honest work and fair prices.
What started as a small operation has grown into one of the most trusted HVAC service providers in the area. Our licensed Texas technicians handle everything from quick AC repairs to full system replacements, for both residential properties and small commercial businesses. Every job — big or small — gets the same attention to detail.
Why homeowners across Cypress keep calling us back: We answer the phone, we show up when we say we will, and we explain what's wrong before we start the work. No upselling. No overtime fees. No surprises on the invoice.
Houston summers don't play around. We keep your AC running efficiently through every triple-digit afternoon — and when it fails, we fix it the same day.
Houston winters are mild — until they're not. When a hard freeze hits and your heater fails, we're the team that answers the phone. We service all heating systems: gas furnaces, electric heaters, and heat pumps.
We recommend two precision tune-ups per year — one in spring before AC season, one in fall before heating season. Here's every item our technicians check on each visit. We service all brands and models for residential and light commercial customers.
Inspect drain lines
Inspect motorized dampers
Clean or replace filters (customer supplied)
Adjust bypass dampers
Tighten electrical connections
Evaluate safety controls
Measure voltage differences
Measure amperage draw
Check start and run capacitors / relays
Measure temperature difference
Adjust thermostat calibration
Check fan blades for lightness
Lubricate fan motor (if applies)
Monitor freon level
Inspect valves
Check for freon leaks
Perform carbon monoxide test
Clean and adjust burners
Evaluate vent system
Set burner adjustment
Measure gas input
Set manifold pressure
Check flame
Test thermocouple / clean flame sensor
Check heat exchanger for cracks
Clean combustion chamber
Since 1979, Mr. Cool AC & Heating has been the local HVAC team for Northwest Houston. We come to you — fully stocked service vans, ready to fix the problem on the first visit. Same-day and next-day service across our primary service area, with no overtime fees on evenings or weekends.
Proudly keeping our home base comfortable since 1979.
ZIP codes served: 77429 · 77433
Communities: Cypress · Bridgeland · Fairfield · Towne Lake
Fast dispatch and reliable scheduling along the NW corridor.
ZIP codes served: 77040 · 77041 · 77065 · 77084 · 77095
Communities: Jersey Village · Copperfield · Bear Creek · Willowbrook
Serving residential and commercial properties across West Houston.
ZIP codes served: 77042 · 77049 · 77050 · 77055 · 77056 · 77057 · 77079 · 77094 · 77449 · 77450 · 77493 · 77494
Communities: Katy · Park Row · West Houston · Energy Corridor
Need service slightly outside our primary zones? We make regular scheduled calls to:
Tomball · Spring · Memorial / Piney Point Village (77024) · Richmond (77407) · Sugar Land
And surrounding neighborhoods in Harris and Fort Bend counties. Contact us to coordinate your scheduling!
