Licensed, bonded & insured · Free estimates · Mon–Sat 8 AM–6 PM Call (626) 926-7938
A1 America One Mechanical & AirHVAC & mechanical contractor since 2008
America One technician running electrical cable on a VA facility C-FORTS unit

HVAC & Mechanical Contractor for the Inland Empire & Los Angeles

Residential, commercial, and industrial HVAC, plumbing, and electrical work. Locally owned since 2008.

Our Services

From a home AC repair to a commercial build-out or an industrial facility, we bring the same quality to every job.

Residential

Single-family homes, condos, townhomes, multi-family, and ADUs

On time, a clear scope, a fair price, and a clean site when we're done.

  • AC and heating repair, installs, and mini-splits
  • Plumbing: leaks, drains, water heaters, fixtures
  • Electrical panels, outlets, and lighting
  • Interior and exterior painting
  • Tile, kitchen, and bath remodels
  • Handyman repairs and same-day service

Commercial

Retail, offices, restaurants, and medical offices

Downtime costs money. We work around your schedule, after hours and weekends included.

  • Rooftop units, split systems, VRF, and refrigeration
  • Commercial plumbing, grease traps, and backflow
  • 3-phase panels, lighting retrofits, and build-out wiring
  • Tenant improvement build-outs
  • Preventive maintenance contracts
  • Multi-location service for property managers

Industrial

Warehouses, manufacturing, distribution centers, and cold storage

Large-scale mechanical systems and facility maintenance for plants and warehouses.

  • Make-up air, evaporative coolers, and large-tonnage HVAC
  • Cold storage, walk-ins, and freezer systems
  • Process piping and compressed air lines
  • 3-phase power, motor controls, and equipment hookups
  • Exhaust, fume hoods, and dust collection
  • Facility maintenance contracts

HVAC Is Our Specialty

A home AC in a heat wave, a restaurant's rooftop unit, or warehouse ventilation. We respond fast and fix it right.

  • Central AC, heat pump, and furnace repair and replacement
  • Ductless mini-splits for homes and offices
  • Smart thermostats and controls
  • Duct cleaning, sealing, and repair
  • Maintenance plans for every sector
Schedule HVAC service
AC RepairFast diagnostics, same-day when possible.
HeatingFurnaces, heat pumps, and radiant systems.
New InstallsEnergy-efficient replacements.
Rooftop UnitsPackage unit service and replacement.
Industrial VentilationMake-up air, cooling, and exhaust.
MaintenanceAnnual tune-ups and service contracts.

Recent Projects

Residential · Inland Empire

Whole-Home HVAC Replacement

New 4-ton split system, air handler, ductwork, and smart thermostat.

Commercial · San Gabriel Valley

Restaurant Rooftop Unit

Emergency 10-ton rooftop replacement for a full-service restaurant, completed overnight.

Industrial · Inland Empire

Warehouse Ventilation

Make-up air and evaporative cooling for a 150,000 sq ft distribution center.

In the News

Birth of the Cool: An A/C Story
Substack · September 5, 2026

Birth of the Cool: An A/C Story

How Gilbert Banda brings cooling to elderly neighbors, families, and community clinics across Los Angeles, often for free.

"The Lord didn't put me here to hoard my blessings. He put me here to share 'em."Gilbert Banda
Read the story

About America One

Since 2008, America One Mechanical & Air has served homeowners, businesses, and industrial facilities, one job at a time.

Owner and lead technician Gilbert Banda handles every project personally, from the first estimate to the final walkthrough. We're one contractor for every trade: HVAC first, plus plumbing, electrical, painting, and remodeling.

  • Licensed, bonded & insured in California
  • Residential, commercial & industrial
  • Free estimates and honest pricing
  • Emergency HVAC service available
  • Locally owned, serving the Inland Empire & greater LA

Service Area

Serving the Inland Empire and the greater Los Angeles basin. Emergency calls in every area, after hours too.

Inland Empire

Riverside, San Bernardino, Ontario, Fontana, Rancho Cucamonga, Corona, Moreno Valley, Pomona

Los Angeles

Los Angeles, Long Beach, Pasadena, Whittier, Downey, Compton, Torrance, El Monte

San Gabriel Valley

Alhambra, West Covina, Baldwin Park, Covina, Azusa, Glendora, La Puente, Hacienda Heights

Extended Service

North Orange County, San Fernando Valley, South Bay, High Desert, Temecula and Coachella valleys. Call to confirm.

Contact Us

No call centers. You'll reach Gilbert Banda, the person who will assess your project. Commercial and industrial bids are handled personally.

What to Expect

Every job starts with a clear estimate and a walkthrough of the scope. No hidden charges.

  • Free on-site or phone estimate
  • Accurate timeline before work begins
  • Cleanup included on every job
  • Follow-up to confirm you're satisfied

HVAC Emergency?

System down in the heat or the cold? Call now. We aim for same-day response.

Ready to Get Started?

Residential, commercial, or industrial. Estimates are always free.

(626) 926-7938