Jang Jason

No ratings collected yet Ontario, California

2532 E SMIDERLE LOOP, Ontario, CA 91764, USA

License checked License #1035039 8 yrs experience

Verify this license yourself at the California Contractors State License Board (CSLB).

Claim / Update

Jang Jason provides AC Services for homeowners and businesses in california/ontario" class="font-medium text-brand-blue hover:underline">Ontario, California, where summer heat puts real strain on cooling equipment. Most calls start with a system that runs but no longer cools evenly, or one that shuts off during the afternoon. Solving those problems starts with a clear diagnosis rather than guesswork.

Local market — Ontario

HVAC pros here

Have a website

17%

Cooling demand

1,709

Heating demand

1,537

Cooling/heating demand = annual degree days (NOAA). Electricity = state residential average (EIA).

Services Offered

AC Services in Ontario Heating Services in Ontario Ductwork Services in Ontario Heat Pumps in Ontario Furnace Services in Ontario Thermostat Services in Ontario Emergency HVAC in Ontario Maintenance & Tune-up in Ontario

Service Area

Ontario, California All of California

Location

About Jang Jason

The business's scope extends well beyond cooling. Heating Services and Furnace Services cover inspections, burner and ignition checks, and replacement of worn parts before winter. Heat Pumps, which handle both heating and cooling, are installed and serviced with attention to refrigerant levels and defrost cycles. Ductwork Services address leaks, poor airflow, and uneven room temperatures, while Thermostat Services cover installation, wiring checks, and programming. Emergency HVAC work focuses on diagnosing urgent failures quickly, and Maintenance & Tune-up visits include cleaning, filter changes, and performance testing that keep equipment efficient.

Jang Jason holds contractor license #1035039 in the California state contractor registry and has been licensed since 2018, giving it more than eight years of experience in the trade. That record matters in a region where hot summers and dry air push equipment hard, and where older homes often have ductwork that was never designed for modern loads. Local conditions like these shape how each job is approached.

Homeowners and property managers comparing local pros should verify a license number, ask for a written estimate that spells out the work, and request a clear explanation of any recommended repairs. These steps make the choice easier whether the need is routine maintenance or an urgent breakdown. Find Jang Jason and other listings on HVAC Service Fast to compare options in Ontario.

Frequently Asked Questions

What services does Jang Jason offer?

Jang Jason offers AC Services, Heating Services, Ductwork Services, Heat Pumps, Furnace Services, Thermostat Services, Emergency HVAC, and Maintenance & Tune-up. Work ranges from routine seasonal checks to urgent repairs and new installations.

What areas does Jang Jason serve?

Jang Jason serves Ontario, California, and the surrounding local area. Contact the business directly to confirm whether a specific address falls within its service area.

How do I choose a licensed, insured HVAC contractor in Ontario?

Check that the contractor holds a valid license in the California contractor registry and carries liability and workers' compensation insurance. Ask for proof of both before work begins.

What should I check before hiring an HVAC pro?

Verify the license number online, read recent customer reviews, and compare written estimates that list parts, labor, and warranty terms. Ask whether the technician explains the problem and the proposed fix in plain language.

What are signs it is time to call an HVAC professional?

Call a professional if the system short cycles, makes grinding or screeching noises, or leaves some rooms much warmer or cooler than others. Rising energy bills, a burning smell, or a system that stops working entirely also warrant prompt service.

Is this your business?

6 of 12 profile details are filled in.

Added (6) Missing (6)

Claim it free to add the missing details:

Website Email address Business hours Logo Photos of your work Social profiles

Claim this profile — free

Claimed profiles are always indexed, show a “Claimed by owner” badge, and you can update them any time.

Reviews

No reviews yet. Be the first to review Jang Jason.

Write a review

Your rating *

Your name *

Security code *

Your review (optional — required for 3★ or lower)

Reviews are moderated before they appear. Please be honest and respectful.

Is this your business?

Claim this listing to update your details, services and contact info.

Claim / Update

More AC Services pros in Ontario, California

These local pros also offer the services you’re looking for.

Diamond Air Services - Ontario, CA

1630 E Francis St

HVAC Service Fast is an independent HVAC directory and is not affiliated with this business. Listing details are compiled from publicly available information and may be incomplete or outdated. We do not endorse or guarantee any provider — please verify licensing and insurance directly. See our Disclaimer.