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Giant HVAC Inc

Central A/C Installation, Heat Pump Installation and Replacement, Ducts & Vents Installation and Replacement,

About us

Giant HVAC is a locally owned and operated heating and air conditioning company based in Fremont, CA, proudly serving the Bay Area. With over 20 years of hands on experience, we specialize in HVAC system replacements, air conditioning installations, furnace upgrades, ductwork, and zoning systems. We focus on doing things the right way with clean installations, properly designed systems, and honest recommendations tailored to your home and budget. No pressure and no shortcuts. We are licensed, bonded, and insured, and we handle everything from start to finish including permits, HERS testing, and final inspections. Whether you are upgrading to a high efficiency system, adding air conditioning, or looking for better comfort throughout your home, we take pride in delivering reliable and long term solutions. Giant HVAC built on comfort, honesty, and quality workmanship.

Business highlights

Se habla espanol
22 years of experience

Amenities

Free Estimates

Yes

Accepted Payment Methods

  • CreditCard
Reviews
5.06 Reviews
Number of StarsImage of DistributionNumber of Ratings
5
100%
4
0%
3
0%
2
0%
1
0%

Filter reviews by service

Showing 1-6 of 6 reviews
Atul S.
Oct 2026
5.0
Google Review
Joe is simply awesome and has been our go to person for all HVAC needs. He is very responsive, transparent throughout the diagnosis process, and always does quality work. Would highly recommend him!!

Sheldon W.
Oct 2026
5.0
Google Review
Professional service and they arrived on time.

Nitya N.
Oct 2026
5.0
Google Review
Joe and the Giant team came over and gave us the best experience with installing an AC. Other companies tried to sell us their most premium service without acknowledging the fact that our house just doesn’t need it. As new home owners, it was such a pleasure to work with someone who did a stellar and affordable job! Joe even came back after a couple of days when we shared that we had some issue with the fuse (totally our fault) and fixed it free of charge. Assured us that he’d be happy to do it again if something comes up and kept in touch after then. It’s a great team of people who’re patient and knowledgeable. Would go back to him any day.

Brandt F.
Oct 2026
5.0
Google Review
Joe and his crew were great. He gave me several good options for my HVAC replacement, even one that allowed me to keep my current gas furnace. Joe was on time and responsive. He answers all my questions no matter how trivial. I will likely have more work done with him the future. Update: I had Joe back out to replace my ducting, and add a two new registers in my living room. Again, I am very happy with the results. I am especially impressed with Joe's follow through on an unforeseen issue in the attic. He and Francisco took care of the issue and made sure the job was completed as expected.

Jessica C.
Oct 2026
5.0
Google Review
Squeezed me in last minute and had the exact part I needed ready-to-go. Professional, friendly, and fast.

Ed L.
Jan 2019
5.0
Heat Pump Installation and Replacement
Yes, I recommend this pro
Excellent work. They are super friendly and pretty knowledgeable. They explained everything to me with out being to technical so i could understand.

Licensing

Licensed*

Trade License Number

1044940

Trade License Locale

CA

Trade License Expiration

09/30/2028

State Contractor License Requirements

All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves. To find more licensing information for your state, visit our Find Licensing Requirements page.

*Contact business to see additional licenses.

FAQ

Giant HVAC Inc is currently rated 5.0 overall out of 5.

Monday: 8:00 AM - 6:00 PM Tuesday: 8:00 AM - 6:00 PM Wednesday: 8:00 AM - 6:00 PM Thursday: 8:00 AM - 6:00 PM Friday: 8:00 AM - 6:00 PM Saturday: 10:00 AM - 1:00 PM Sunday: Closed

Giant HVAC Inc accepts the following forms of payment: CreditCard

Yes, Giant HVAC Inc offers free project estimates.

No, Giant HVAC Inc does not offer eco-friendly accreditations.

No, Giant HVAC Inc does not offer emergency services.

No, Giant HVAC Inc does not offer warranties.