HVAC contractor · Sunnyvale, CA · reviewed since 2024
iHow the Experts Score is calculatedEach factor is scored 0–100 on absolute terms (standing in the category can only raise it), then weighted; problems flagged in review highlights or a recent slide in ratings are subtracted:Satisfaction 55%89+48.5Reliability 24%89+21.6Value 14%81+11.5Replies to reviews 7%84+5.9Experts Score= 88Grade A: A = 80+, B = 60–79, C = 40–59, D = 20–39. Needs 10+ reviews.88SCORE
AGradeiLetter from the Experts Score: A = 80+, B = 60–79, C = 40–59, D = 20–39, F = under 20.
#86 of 113 HVAC contractorsiPosition by Experts Score among all companies we track in this category. · better than 24%
4.9★★★★★128 Google reviews · 23 photos
95%five-star reviews
4.88★last 12 monthsiAverage stars on reviews from the last 12 months only.
1.6%1–2★ in 2 yearsiShare of 1–2★ reviews in the last 24 months — or the 20 newest reviews when the company had fewer than 20 in that time.
97%reviews answered by the owner
$460typical billiMedian bill customers of this company reported in their reviews (needs 3+ priced reviews).
United HVAC, Plumbing & Electrical holds a 4.9-star rating from 128 reviews, with the owner responding to 97% of feedback. Customers frequently praise punctual scheduling, clear communication, and competitive pricing for services including heat pump installations, plumbing repairs, and electrical upgrades. However, low-star reviews indicate concerns about pricing transparency, specifically citing discrepancies between initial estimates and final charges or delayed follow-up on repair quotes.
Google rating: 4.9 out of 5 from 128 reviews (95% five-star).
Reviews on this page: 128 Google reviews (92 with written comments, 8 with photos).
Owner responses: the business replied to 97% of reviews.
Score per factor (100 = best)iEach factor is scored 0–100 on absolute terms (star average, share of 1–2★ reviews, price verdicts…); standing within the category can only raise it, never lower it.. Strongest: momentum and satisfaction; weakest: value.
This companyHVAC Contractors median0 = centre, 100 = best
SatisfactioniSatisfaction · 54% of the scoreRecency-weighted star average (2-year half-life), shrunk toward the category mean by review volume; the company’s own lifetime average as the prior; absolute: 4.0★ = 0, 5★ = 100.United HVAC, Plumbing & Electrical: 89/100 on this factor. Category median: 94.A
89
ReliabilityiReliability · 24% of the scoreHow rarely jobs go badly: share of 1–2★ reviews — 60% the last 24 months (or the 20 newest if fewer), 40% all-time; 0% = 100, 15%+ = 0; the category percentile can only raise it.United HVAC, Plumbing & Electrical: 89/100 on this factor. Category median: 93.A
89
Craft & serviceiCraft & service · penalty only, up to −10 pointsGoogle review highlights: Quality, Professionalism, Responsiveness, Punctuality — how rarely reviewers flag them as a negative, per review since highlights began; 0% = 100, 5%+ = 0. Subtracted from the score (up to −10), never averaged in — clean highlights are the norm, not a bonus.Not enough reviews for this factor yet. Category median: 96.–
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ValueiValue · 14% of the scoreCustomers’ own price verdicts (Great / Reasonable vs Overpriced) and Value highlights; 65% absolute (all “reasonable” ≈ 80, “great” = 100), the category percentile can only raise it.United HVAC, Plumbing & Electrical: 81/100 on this factor. Category median: 100.A
81
MomentumiMomentum · penalty only, up to −10 pointsPenalises only a real slide: last-12-month average below lifetime (−0.5★ = 0). Still 4.8★+ over the last year, or steady/improving = 100. Subtracted from the score (up to −10), never averaged in.United HVAC, Plumbing & Electrical: 100/100 on this factor. Category median: 100.A
100
Replies to reviewsiReplies to reviews · 7% of the scoreHow often the owner publicly replies to reviews under 5★ (1–4★). Needs 3+ such reviews, otherwise not counted; 65% absolute (80%+ replied = 100), the category percentile can only raise it.United HVAC, Plumbing & Electrical: 84/100 on this factor. Category median: 100.A
84
Bar = this company · dark tick = category median.
Star ratings
128 Google reviews we collected
4.9of 5
5 stars12295%
4 stars22%
3 stars22%
2 stars11%
1 star11%
Praise vs complaints
Phrases our text analysis found in 92 written reviews
98%praise
Praise22398%
Complaints52%
PriceiGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
97%fair
Great price721%
Reasonable2267%
Overpriced13%
Not sure39%
$460+40% vs typical HVAC contractors
Middle half of what 21 customers paid ($239–$871) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
7topics
Speed & response5524%
Staff & attitude5223%
Quality & results4319%
Would recommend2913%
Price & value219%
Communication167%
Honesty & trust125%
What customers talk about
We read 92 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“I had a great experience with United HVAC - they were able to send someone out within hours i.”
“From the beginning, Neo, the salesperson, was very pleasant, knowledgeable, and helpful.”
“They also did some plumbing repair last year, same great quality service with honest prices.”
“Overall, I highly recommend United HVAC, Plumbing and Electrical.”
“I would highly recommend United to anyone considering repairs or upgrades.”
“Great communication, competitive pricing, professional workmanship, and a team that is simply easy to work with.”
“The quote they sent me was unreasonable from any standards(upgrade is good to have & not need to have).”
“He gave me good advice, answered all my questions, and made the process easy without any pressure.”
“They are very reliable and fast response to our call.”
People customers mention
Logan5 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired United HVAC, Plumbing & Electrical for 6 kinds of job. Pick one to see what they paid and said.
MMichelle5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 2 months ago★★★★★
Honest company! Our AC needed repair, Logan came for the initial inspection. He is knowledgeable, professional, timely, clean and explained everything. Grateful to have found United HVAC. They also did some plumbing repair last year, same great quality service with honest prices.
Paid $2,000+Reasonable priceCleaningA/C system repair
SSheng5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 8 months ago★★★★★
Quick availability and prompt service. The technician, Oscar, was great. He had to get an extra part and the work was a little more complicated than expected. He finished the job perfectly with the originally quoted price.
Paid $300–400
DDanLocal Guide · 37 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
Teo did a great job in helping us install a new RO water filter. He did everything from drilling to installing the new water lines. After the initial installation, he stayed around to ensure that the system worked properly. Would highly recommend!
Paid $400–500Reasonable priceService not listed
MMary5 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
Getting an appointment was quick and easy. Orlando was professional and did a great job!
Paid $800–900Reasonable priceGeneral repairs
KKennethLocal Guide · 18 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 9 months ago★★★★★
United showed up on time, found the problem, proposed a good solution and fixed it in good time. Professional, competent and reasonably priced. I would recommend this outfit in a second.
Paid $500–600Reasonable priceService not listed
BBrian4 reviewsiTotal number of Google reviews this person has written across all businesses on Google Maps (not just this one). More reviews usually means a more experienced, trustworthy reviewer. · 10 months ago★★★★★
I would give United HVAC 5 stars. The technicians were nice and did quality work in order to upgrade my HVAC system (Outside AC unit and attic Heat pump). They took a bit longer to finish, but so far, I'm happy with their services.
I had a great experience with United HVAC - they were able to send someone out within hours i.e. Julian who was fantastic. He gave me regular updates on his ETA, quickly figured out what was causing my shower head to leak and had the parts to effectively resolved the issue.
Price assessment: Reasonable price
S
Shirley Cuellar8 reviewsiTotal number of Google reviews Shirley has written across all businesses on Google Maps, not just this one.
I recently had a heat pump water heater installed by United HVAC, Plumbing and Electrical, and I’m very happy with the entire experience.
From the beginning, Neo, the salesperson, was very pleasant, knowledgeable, and helpful. He gave me good advice, answered all my questions, and made the process easy without any pressure. Their quote was also very competitive, which was another big plus.
Their communication was also excellent. I received texts and emails with the appointment date, reminders, the technician’s name, expected arrival time, and updates throughout the process.
The technicians were on time, polite, hardworking, and very respectful of my home and property. They did a nice, professional job and cleaned up after the work.
Because I had such a positive experience and found everyone so easy to work with, I decided to have them also install a gas water heater at my rental property. I’m very happy with that decision as well.
Overall, I highly recommend United HVAC, Plumbing and Electrical. Great communication, competitive pricing, professional workmanship, and a team that is simply easy to work with. Thank you to Neo and the entire team!
M
Michelle Chiang5 reviewsiTotal number of Google reviews Michelle has written across all businesses on Google Maps, not just this one.
Honest company! Our AC needed repair, Logan came for the initial inspection. He is knowledgeable, professional, timely, clean and explained everything. Grateful to have found United HVAC. They also did some plumbing repair last year, same great quality service with honest prices.
Price assessment: Reasonable price
Price: $2,000+
Services: Cleaning, A/C system repair
Response from the owner · 2 months ago
Hi Michelle, thank you for the kind words — and for coming back to us! Logan will be glad he made a strong impression on your A/C system repair: knowledgeable, clean, and clear about the work. Honest pricing across both your HVAC and plumbing jobs is exactly the standard we hold. Professional A/C repair from a top-rated, licensed team is what we aim for every time. Thank you for choosing United HVAC, Plumbing & Electrical— we're always here whenever you need us!
D
Danish SiddiquiLocal Guide · 13 reviewsiTotal number of Google reviews Danish has written across all businesses on Google Maps, not just this one.
Excellent job done by Chris fixing pipeline leak, highly recommended!
Price assessment: Reasonable price
Price: $1–200
Services: General repairs
Response from the owner · 3 months ago
Hi Danish, thank you for the great review! Chris will be glad he got your pipeline leak fixed up right — fast, reliable leak repair at a fair price is exactly what we aim for. Thank you for the recommendation and for choosing United Plumbing — we're always here whenever you need us!
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Subash PatelLocal Guide · 98 reviewsiTotal number of Google reviews Subash has written across all businesses on Google Maps, not just this one.
Update 2026:
We recently had low pressure in water softener & these were the guys I first remembered & called. So they made a visit & told would charge me $199(which wasnt the case last year). I was also looking to upgrade my water heater & some electrical upgrade. The quote they sent me was unreasonable from any standards(upgrade is good to have & not need to have). A friend who visited showed us how to bypass the water softener & install a descalar which will not let hard water lump(which is biggest issue) That was $200 solution to thousands of dollars quoted. Anyways, its been three months & I was sent invoice for their visit & I duly paid. But I wont give them anymore business(penny wise, pound foolish I think). I am still looking for a company that can do good job, take honest money & I can depend on.
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It all started with our dishwasher which stopped working because of low water pressure. My wife looked up for few plumbers & gave call to United to get estimate. The technician who came diagnosed it to valve issue & replaced it at very reasonable price. Then they noted some leaks in our sewer & water pipes during crawl space visit. My wife decided to get a quote for upgrading sewer pipes.
Sean came in & provided quote to fix water pipes as well as remove cast iron sewer pipes and replace with plastic ones. Fast forward, united matched another quote I had and I signed up. They started the work very next day.
Rinat Shai came with his crew & boy, what a hard worker he is. For the two days he spent under my crawl space, he spent very less time wasting, including lunch break. He went above & beyond to get all the work get finished within promised two days. Infact he worked on both independence day & next day, which most of us spend drinking or traveling. I am very very happy with his work attitude.
I would highly recommend United to anyone considering repairs or upgrades. I look forward to have mutually rewarding business relationship with this company.
Price assessment: Reasonable price
Services: Service not listed
Response from the owner · 3 months ago
Hi Subash, thank you for the detailed feedback — and for your business over the years. We're proud of the repipe work Rinat and the crew did in your crawl space, and it means a lot that it stood out to you. We also hear your concern on the recent diagnostic fee and the upgrade quote, and we take that seriously. Pricing should always come with a clear explanation of the value behind it, and it sounds like we fell short of that this time. I'd genuinely like to understand what happened and make it right — please reach out to me directly at (408) 903-3275. Thank you for giving us the chance to earn back your trust.
A
Andrea2 reviewsiTotal number of Google reviews Andrea has written across all businesses on Google Maps, not just this one.
Manny did a fantastic job on my HVAC service last week. He was very professional and explained the required repairs clearly. Everything was left clean which I appreciated.
Response from the owner · 5 months ago
Thank you so much for your kind words! It truly warms our hearts to hear that you had a great experience with United team. We pride ourselves on providing reliable service, and knowing that we’ve made a positive impact makes it all worthwhile. Remember, we're always here for any of your plumbing needs, whether it’s fixing a water heater or tackling a tricky drain. It’s customers like you who inspire us to do our best every day. Thanks again for choosing us — we're just a call away whenever you need help!
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Аnatol Kalach3 reviewsiTotal number of Google reviews Аnatol has written across all businesses on Google Maps, not just this one.
We had a leakage from the pipes which lead to dropping water from the ceiling of the kitchen. Pasha came to make the repair he was very knowledgeable, kind and made a proper repair fast and efficient. We are extremely happy working with the company in general and Pasha.
Response from the owner · 6 months ago
Thank you so much for your kind words! It truly warms our hearts to hear that you had a great experience with United team. We pride ourselves on providing reliable service, and knowing that we’ve made a positive impact makes it all worthwhile. Remember, we're always here for any of your plumbing needs, whether it’s fixing a water heater or tackling a tricky drain. It’s customers like you who inspire us to do our best every day. Thanks again for choosing us — we're just a call away whenever you need help!
O
Olivia Wu3 reviewsiTotal number of Google reviews Olivia has written across all businesses on Google Maps, not just this one.
Technician Teo V Volkov is great! Great service! I really appreciate it. Thank you, Teo! He came to inspect our plumbing and took the time to explain everything clearly. He was professional, patient, and very knowledgeable. I didn’t feel rushed at all and he answered all my questions. Highly recommend!
Response from the owner · 6 months ago
Hello Y W,
Thank you so much for sharing your wonderful experience with us! We’re thrilled to hear that our team could assist you in choosing and installing a new toilet that meets your needs. Your satisfaction is our top priority, and it's incredibly rewarding to know that we've succeeded. We truly appreciate your trust and support. Remember, we're always here to help with any of your plumbing needs, including water heater repairs, replacements, installations, as well as drain cleaning or sewer line repairs. Please don't hesitate to reach out to us anytime. Thank you once again for your kind words and support!
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Sheng Ye5 reviewsiTotal number of Google reviews Sheng has written across all businesses on Google Maps, not just this one.
Quick availability and prompt service. The technician, Oscar, was great. He had to get an extra part and the work was a little more complicated than expected. He finished the job perfectly with the originally quoted price.
Price: $300–400
Response from the owner · 8 months ago
Thank you so much for taking the time to share your experience with us! I'm delighted to hear that Oscar was able to provide you with quick and efficient service. It’s always our goal to handle every situation with care, even when things get a bit tricky. Knowing that you were pleased with the outcome means the world to us. We truly appreciate your trust in United Plumbing. Remember, we’re just a call away for water heater repairs, replacements, installations, drain cleaning, or sewer line repairs. We’re here whenever you need us!
D
Dan ZhaoLocal Guide · 37 reviewsiTotal number of Google reviews Dan has written across all businesses on Google Maps, not just this one.
Teo did a great job in helping us install a new RO water filter. He did everything from drilling to installing the new water lines. After the initial installation, he stayed around to ensure that the system worked properly. Would highly recommend!
Price assessment: Reasonable price
Price: $400–500
Services: Service not listed
Response from the owner · 9 months ago
Hey there! It’s wonderful to hear about your experience with Teo. We're thrilled he could assist with your RO water filter installation and ensure everything was running smoothly. Your kind words mean a lot to us and truly motivate our team. We're always here for any plumbing needs, whether it's water heater repair or a pesky drain issue. Thanks for recommending us; it’s customers like you who make our job so rewarding. Take care and don’t hesitate to reach out if you need anything else!