AirProHQ
Ontario, CA

HVAC contractors in Ontario, CA

57 heating & cooling pros

Whether you need an emergency AC repair in the Ontario heat or a planned furnace replacement, this list gathers local HVAC contractors with their licence status and contact details in one place. Compare a few before you book — and read our hiring checklist first.

HVAC contractors in Ontario, CA

HVAC in Ontario: common questions

How many HVAC contractors are in Ontario, CA?

AirProHQ lists 57 HVAC contractors in Ontario, CA.

Which Ontario HVAC companies offer 24/7 emergency service?

Availability varies — call any listed contractor to confirm emergency and after-hours service in Ontario.

How much does HVAC repair cost in Ontario?

Most AC repairs run $150–$650 and a full system replacement runs $5,000–$12,500 nationally. See our free cost guides for a full breakdown before you request a quote.

Before you call around

Know the fair price so no one oversells you.

HVAC cost guide AC repair costs How to hire