Heating & Air Conditioning Services in Ontario & the Inland Empire
Alex Air & Heating provides cooling, heating, mini split, maintenance and commercial HVAC service for homes and businesses across Ontario and the Inland Empire. Call during business hours to confirm the next available appointment.
Open Mon–Sun · 8:00 AM – 6:00 PM. Same-day appointments most days.
Same-day service
Most days, when you call early
EPA-Certified
Registered California LLC — done right
Documented service scope
Review the work before authorizing it
“Very professional excellent service and all the mini split installs look fantastic and clean”
— Mike Spezze
- EPA 608 UniversalCertified refrigerant handling
- Registered CA LLCAlex Air & Heating Services LLC
- 5.0★ on Google19 reviews
- Warranty-backed3-yr labor · 5-yr parts
- Upfront pricingNo hidden fees
- Appointment availabilityConfirmed when you call
The standard for HVAC you can trust.
We've built our reputation on craftsmanship, honesty, and showing up when we say we will.
EPA-Certified Technicians
Written Pricing Before Work
Appointments Based on Availability
Quality Workmanship
Documented Service Scope
Residential & Commercial Expertise
Locally Owned & Operated
Business-Hours Scheduling
5.0 stars from local neighbors.
“Very professional excellent service and all the mini split installs look fantastic and clean”
Mike Spezze
Mini Split Installation
“Love my cute little mini split! It looks great and is perfect for my farmhouse in Rancho Cucamonga. Cost-friendly and keeps the place nice and cool. Very happy with it!”
Zoe
Rancho Cucamonga
“Had a 24k BTU mini split installed in my garage and couldn’t be happier with the work. My house is older and has an outdated electrical panel, which made finding the right parts more difficult, but they handled everything professionally and still completed a very clean, high-quality installation. Reliable, knowledgeable, and easy to work with. Highly recommend!”
Shawn M
Mini Split Installation
Schedule service or a free estimate.
Call us, text us, or fill out the form — we respond fast during business hours (Mon–Sun · 8:00 AM – 6:00 PM).
What you can count on
- Appointment timing confirmed before you book
- Upfront, written pricing — no hidden fees, ever
- EPA-certified & a registered California LLC
Warranties
3 Years labor · 5 Years parts · 7 Years compressor
Discounts
First-time, military & senior customers
Precision HVAC solutions for every season.
AC down in a heatwave or heat out on a cold night? Our EPA-certified technicians respond fast across the Inland Empire & LA County — with honest, upfront pricing and workmanship you can trust.
Tell us what's happening —
we'll handle the rest.
Skip the menu. Pick what's happening at your home or business and we'll route you to the right tech, fast.
Same-day service
No AC in a heatwave, no heat in a cold snap, or unsafe smells. Call us during business hours and we'll do everything we can to get a tech out today.
Call now · Mon–Sun · 8:00 AM – 6:00 PMAC won't cool
Warm air, weak airflow, or it just won't kick on.
AC repair & diagnosticsHeat isn't keeping up
No heat, lukewarm air, or short cycling on cool nights.
Furnace & heat pump serviceStrange noises or smells
Banging, buzzing, or musty odors when the system runs.
Diagnostic & repairTime for a tune-up
Keep efficiency up and head off breakdowns before peak season.
Maintenance plansNew system or upgrade
Aging unit, high bills, or adding comfort to a new space.
Installation & replacementNot sure what's going on?
Describe what you're hearing, smelling, or feeling — we'll tell you what it likely is and what it'll cost. No pressure. No upsell.
Call during posted business hours
Save on service this season.
$89
AC Tune-Up
22-point precision check to keep your system running efficiently all summer.
Claim offerFree
Second Opinion
Got a big repair or replacement quote? We'll review it at no charge.
Request reviewAsk about our First-Time Customer, Military & Senior discounts. Cannot be combined with other offers.
$199 per system, per year.
One comprehensive annual visit covering both your cooling and heating system — plus member perks all year long. Keep your equipment efficient and head off expensive surprises before they happen.
10%
Off all repairs
Every repair, every visit
$0
Overtime charges
Nights & weekends included
Free
1" pleated filter
Replaced each visit
Waived
Diagnostic fee
Per system, per year
Auto
Service reminders
We tell you when it's time
Cooling Maintenance
- Inspect & test condenser fan motor, compressor, capacitor, contactor, evaporator coil, thermostat & refrigerant level
- Clean condenser coil, flush condensate line & exterior of condenser
- Replace 1" pleated filter
Heating Maintenance
- Inspect & test blower motor, ignition system, heat exchanger, thermostat & safety controls
- Clean burners and ignition assembly
- Replace 1" pleated filter
Got two systems? Each enrolls separately at $199/year — each gets its own annual visit.
Keep your business comfortable — and open.
Restaurants, offices, retail, medical, and light industrial. We design, install, and service commercial HVAC with maintenance plans that prevent costly downtime.
- Rooftop units (RTUs)
- Split & VRF systems
- Walk-in coolers
- Preventative maintenance
- Priority scheduling based on availability
- Tenant improvements
Backed by real warranties — and honest pricing.
We are EPA-certified and a registered California LLC. Every quote is upfront, every price is approved before we begin, and there are no hidden fees — ever.
3 Years
Labor Warranty
5 Years
Parts Warranty
7 Years
Compressor Warranty
Serving the Inland Empire & LA County.
Service-area HVAC business serving the Inland Empire, Los Angeles County & surrounding areas
Do we cover your ZIP?
Not sure if you're in our area? Enter your ZIP above — we cover most of the Inland Empire & LA County.
- EPA-certified technicians
- Honest, upfront pricing — no hidden fees
- Appointment availability confirmed by phone
Prefer to talk? Call 626-777-4822
19 cities across 4 regions
Locally owned & operated
An independent local team serving the Inland Empire & LA County.
Clear scheduling
Call during business hours and we'll do everything we can to dispatch a tech the same day.
Fast response times
We answer fast and show up when we say we will.
Frequently asked questions.
Quick answers to what homeowners and businesses ask us most.
AC repair pricing depends on the part and labor involved. We always provide an upfront, written quote after diagnosis — you approve the price before we begin, with no hidden fees. Maintenance members receive 10% off all repairs and waived diagnostic fees.
Yes. We offer same-day and emergency service across the Inland Empire and LA County whenever our schedule allows. Call 626-777-4822 and we'll prioritize your dispatch.
A standard AC, furnace or system replacement is typically completed in a single day. Larger or more complex installations may take two days. We confirm the full timeline with you in advance.
We service and install all major HVAC brands and equipment types — central AC, furnaces, heat pumps, ductless mini splits, and smart thermostats including Google Nest.
For most homes, every 1–3 months depending on filter type, pets, and allergies. A clean filter protects your equipment and keeps energy bills down. Members get a 1" pleated filter replaced at each visit.
Yes — ductless mini split installation is one of our specialties. We install single and multi-zone systems for homes, additions, garages, ADUs and light commercial spaces.
Yes. We offer fast-response emergency AC and heating repair across our service area, with honest pricing even on emergency calls.
Ready when you are.
Written pricing, EPA 608-certified expertise, and appointment timing confirmed before you book.