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United HVAC, Plumbing & Electrical

Mountain View, CA
4.9(861 reviews)
RESPONSE

Unknown

No response data yet

EMERGENCY

24/7 Verified

Confirmed by reviews

PRICING

Premium / Upsells

Membership programs detected in reviews

RED FLAGS

1 concern

upselling concerns

Trust Score: 0/100 · Based on 861 reviews

Top pickTop pick
4.9Google

Our Verdict

Strong Hire

#4 of 11 in Mountain View, CA

Best for
  • Emergency and same-day calls
  • Budget-conscious homeowners
  • Complex installs and remodels
  • Water heater install/repair
  • Drain and sewer work
  • Bathroom and kitchen remodel plumbing
Avoid if

No major caveats

Hire if: You need a plumber who actually shows up when scheduled

Hire if: You need high-quality work that holds up over time

Caution if: You need rock-bottom prices with zero flexibility on the quote

Caution if: You need guaranteed sub-hour response for true emergencies

How they score across what matters

Based on 5 reviews analyzed. Click a row for the quote that best illustrates the score.

What they do well (and don’t)

Green means reviews confirm they’re good at it. Red means reviewers flag issues. Gray means no reviews talk about it yet.

What 861 Reviews Tell Us

Emergency Response

Emergency and same-day calls

Not enough data to identify weaknesses—all 5 reviews are 5-star ratings with no complaints about pricing disputes, delays, or workmanship issues

What To Watch Out For

Not enough data to identify weaknesses—all 5 reviews are 5-star ratings with no complaints about pricing disputes, delays, or workmanship issues

1 review mentions membership programs or upselling

Upselling concerns

Quality & Professionalism

All 5 reviewers praise technician professionalism, friendliness, and willingness to accommodate specific customer requests without cutting corners

Communication

Willing to go beyond scope—includes free extras like rewiring updates and attic reorganization without upselling

Pricing

Not enough data to identify weaknesses—all 5 reviews are 5-star ratings with no complaints about pricing disputes, delays, or workmanship issues

Clean & Professional24/7 Verified by Reviews

Customer reviews

Reviews from Google, Yelp & more

C
Chaozhong Lian

I wholeheartedly recommend United HVAC, Plumbing & Electrical. I recently hired them to replace the original 1961 HVAC ductwork in my house, and they did a wonderful, extremely professional job. I am beyond satisfied with the results. You don't just have to take my word for it--I actually took pictures of their completed work, uploaded them to Google Gemini, and asked the AI to evaluate the installation. Even the AI praised their work, calling it a "top-tier, textbook installation"! (See the screenshots below). During the bidding process, I compared United with another company. United's quote was slightly higher, but choosing them was absolutely the best decision. Their program manager, Tim, was incredibly easy to work with. He quickly identified asbestos tape on my 1961 ducts and insisted we use a C-22 licensed abatement company to remove it safely and provide all the legal documentation for future reference. The other company offered a cheaper route by doing the removal themselves, but for something as dangerous as asbestos, doing it by the book is well worth the minor price difference. I also want to give a massive shoutout to Bair (Bayar) for his exceptional craftsmanship. He is easy-going, friendly, and really listened to all of my concerns. He provided great recommendations on how the new ductwork should be organized, and actually used a machine to fine-tune and balance the air pressure throughout the house. To top it all off, he even carefully reorganized the insulation in my attic after the work was done! It's this kind of attention to detail that makes them stand out. The pictures speak for themselves. If you want true professionals who care about safety, honesty, and quality craftsmanship, go with United HVAC.

C
Chaozhong Lian

I highly recommend United HVAC, Plumbing & Electrical! From start to finish, the entire process was incredibly smooth. They handled all the permits and inspections throughout the project, which gave us complete peace of mind. Every single technician we interacted with was friendly, approachable, and truly easy to work with. I specifically want to give a massive shoutout to Max (Aiusha) and Rinat for their wonderful work. Max is super professional and highly skilled. He installed my water heater and water softener with absolute "military precision." I'm the kind of guy who has a lot of weird, specific ideas about how pipes should be routed and extra gadgets I want installed to monitor the system, and Max handled all my requests with total ease. I am also super paranoid about plumbers plowing through studs or structural beams in my 1961 house, but Max was extremely careful and treated my home's structure with the utmost respect. Rinat is also a fantastic plumber. He installed a PRV, a Moen Flo auto-shutoff valve, an RO system, and even replaced some of the old sewage pipes in my house. He really listened to all of my requests and finished the job quickly and professionally. I highly recommend him! Because of their wonderful service, I’ve officially signed up for their company's membership. I am currently working with them to redo my HVAC ductwork, and I will definitely leave another review for that project once it's done. I'm sure they will do a wonderful job there, too!

G
Ginger Perng

We had to replace the wax ring on our toilet. Scheduling was easy; pricing was fair (much cheaper than the other quote we got!) Our technician, Melvin, was polite and expedient. This is our second time using United and highly recommend for gas and plumbing services.

W
W-J Wang

My ADU bathroom plumbing is quite old, and I recently noticed very low water flow from the faucet. After cleaning the aerator, the water flow returned to normal, but the P-trap started leaking. Because the drain outlet was heavily rusted, Melvin assessed that a plastic P-trap would not work and that the old-style metal piping had to be used instead. He made multiple trips to the store to find the correct metal P-trap, and later also discovered that there was a blockage inside the drain line, which he handled at the same time. Melvin was professional, patient, and thorough throughout the entire process. I really appreciate his persistence and would highly recommend him.

H
Henry C

Needed to have two circuits added for a couple ovens as well as one outlet moved. Marc moved the outlet and updated old wiring for free in addition to installing the two circuits. It was a big job and Marc made sure to get the job done before he left. I’m very satisfied with the work that was done and really appreciate the extra effort that Marc put in. While the quote was a little bit more than the other quotes I got, the estimate was clear, complete, and fair. All in all, I am a satisfied customer and would definitely use United HVAC again.

Business details

Phone
(408) 767-6749
Address
10531 Pineville Ave, Cupertino, CA 95014, USA
Hours
Varies — check website

Service area

Based in Mountain View. Serves 10 nearby cities within 20 miles:

Last updated June 25, 2026 · Data from Google Reviews
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United HVAC, Plumbing & Electrical

4.9$
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