Commercial Heat Pump Repair in Ontario, CA

Why Ontario Businesses Choose #1 AC Guys

For four generations, our family has engineered reliable comfort for Southern California’s most demanding commercial environments. With 80+ years of hands‑on know‑how, we bring deep diagnostic skill, meticulous workmanship, and premium parts to every Commercial Heat Pump Repair in Ontario, CA. Our factory training spans Fujitsu, Mitsubishi Electric, Midea, Gree, and Haier—so we understand your equipment at a component level and repair it to manufacturer standards.

Our mission is simple: healthier air for a healthier life. In practice, that means better indoor air quality, steadier temperatures, and lower total cost of ownership for your facility.

Systems and Sites We Service

• Rooftop and packaged heat pump units (RTUs)
• Multi‑zone VRF/VRV heat pump systems
• Ducted and ductless commercial heat pumps
• Smart controls, BMS integration, and economizers
• Offices, retail, restaurants, medical suites, warehouses, and multi‑tenant buildings

Common Heat Pump Issues We Fix Fast

• No heat or no cooling under load
• Tripped breakers, short cycling, and nuisance alarms
• Refrigerant leaks, undercharge, or non‑condensables
• Frozen coils, airflow and static pressure problems
• Defrost cycle failures and reversing valve faults
• Compressor, ECM blower, and fan motor failures
• Sensor, board, or communication errors on VRF/RTU systems

Our Repair Process

1) Comprehensive Diagnostic: We evaluate electrical, refrigerant, and airflow performance, plus controls/communication to find root causes—not just symptoms.
2) Clear Plan & Quote: You get options that balance uptime, efficiency, and budget, with transparent pricing before work begins.
3) Precision Repair: Factory‑level procedures, OEM‑grade parts where specified, and workmanship aligned with ASHRAE and California Title 24 requirements.
4) Performance Verification: Post‑repair commissioning checks—superheat/subcooling, static pressure, delta‑T, and control logic—to confirm lasting results.
5) Preventive Guidance: Pro tips and tailored maintenance plans to extend equipment life and reduce emergency calls.

Healthier Air, Lower Costs

Well‑repaired heat pumps do more than restore comfort—they improve IAQ and reduce energy waste. By correcting airflow, charge, and controls, we help stabilize humidity, reduce particulates, and curb utility spend. Many Ontario clients see fewer breakdowns, longer equipment life, and measurable efficiency gains after our service.

Large and Complex Projects Welcome

From multi‑tenant retail to distribution centers, our engineers excel at challenging scopes—multi‑zone heat recovery systems, hard‑to‑reach RTUs, and mission‑critical spaces. Need phased repairs, after‑hours work, or coordination with property management? We’ve got you covered.

Brands We Know Inside and Out

Mitsubishi Electric, Fujitsu, Midea, Gree, Haier—and many more. Our factory training helps protect manufacturer warranties and ensures correct diagnostics, refrigerant handling, and control calibration.

Service Area

We proudly serve Ontario, California and neighboring communities across the Greater Los Angeles area, including Los Angeles County and nearby counties such as Orange County, Ventura County, and Western Riverside County. If your facility sits in the Inland Empire corridor, we can likely dispatch quickly—ask our team for availability.

When to Call for Repair

• Temperature swings, hot/cold spots, or rising humidity
• Spiking utility bills or longer run times
• Ice on coils, water around air handlers, or unusual noises/odors
• Frequent service alarms or communication faults
• Comfort complaints from staff or tenants

Get Started Today

Need Commercial Heat Pump Repair in Ontario, CA? Choose the fourth‑generation experts who stand behind every fix. Contact #1 AC Guys for a professional diagnostic and a practical plan to restore comfort, efficiency, and indoor air quality—fast.