Honest and professional. The plumber (Ren B) took the time to properly troubleshoot the issue and figure out what was going on. In the end, no services were performed because he honestly explained that a fix wouldn't actually solve the underlying problem right now. I really appreciated the transparency and zero sales pressure.

United HVAC, Plumbing & Electrical
United HVAC, Plumbing & Electrical at a glance
Google reviewers rate United HVAC, Plumbing & Electrical five stars based on 135 reviews, noting the owner responds to nearly all feedback. Customers frequently cite punctuality, clear communication, and fair pricing for services including drain cleaning, water heater replacement, and HVAC installation. Technicians are described as professional and thorough, often cleaning up after repairs and explaining issues without pressure. The only recurring criticism involves a technician failing to diagnose a complex water quality issue, though the company generally receives praise for quick response times and effective problem-solving.
- Google rating: 5.0 out of 5 from 135 reviews (99% five-star).
- Reviews on this page: 135 Google reviews (118 with written comments, 6 with photos).
- Owner responses: the business replied to 99% of reviews.
- Most recent review: October 27, 2026.
- Service: HVAC Contractor serving Sunnyvale, California.
Data from Google, last updated October 29, 2026.
Score profile vs other HVAC contractors
Score per factor (100 = best)Each 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 craft & service; weakest: value.
Bar = this company · dark tick = category median.
Star ratings
135 Google reviews we collected
- 5 stars13399%
- 4 stars11%
- 3 stars11%
- 2 stars00%
- 1 star00%
Praise vs complaints
Phrases our text analysis found in 118 written reviews
- Praise277100%
- Complaints10%
PriceGoogle asks reviewers whether the price was great, reasonable or overpriced; these are their answers.
Price verdicts customers left with their Google review
- Great price215%
- Reasonable969%
- Overpriced18%
- Not sure18%
Middle half of what 12 customers paid ($302–$1.6k) · gold mark = category median.
Topic share
How often each topic comes up in the written reviews
- Speed & response7527%
- Staff & attitude5118%
- Quality & results4416%
- Price & value4115%
- Would recommend3513%
- Communication228%
- Honesty & trust104%
What customers talk about
We read 118 written reviews and marked every phrase about these topics. The same colors are highlighted in the reviews.
“They come to help immediately and offers professional advice based on assessed situations.”
“The technicians were highly professional, arriving on time for every single appointment.”
“They came when scheduled and diagnosed our plumbing issues quickly and thoroughly.”
“Now came the moment of truth, the bill — and I was pleasantly surprised at how reasonable it was.”
“I highly recommend both of them and would call them again for my future plumbing needs.”
“In the end, no services were performed because he honestly explained that a fix wouldn't actually solve the underlying problem right now.”
“United Plumbing and Derrick, my technician were quick, efficient, up front with costs and contingencies and friendly.”
People customers mention
- Tim 3 reviews
praise complaint · found by our text analysis, Google review wording unchanged.
Reviews for your job
Customers hired United HVAC, Plumbing & Electrical for 8 kinds of job. Pick one to see what they paid and said.
Recent priced reviews
We are very pleased with the HVAC services provided by United. They come to help immediately and offers professional advice based on assessed situations. Special shout out to technician Vitaly who stayed late until 9pm to make sure we have hot water back on running before he left. His workmanship, professionalism…
I recently had United HVAC install a new ducted heat pump system in my home, and the entire experience was very good. From the beginning their communication was very clear, so I always knew what to expect next. They handled all the complicated permit paperwork, scheduled the inspection, and guided me through the…
Friendly and professional service technician. Melvin performed a tankless water heater flush and also the plumbing inspection of my home.
Extremely professional, explained the issue with our old water heater, the entire procedure, what to expect during new installation, dealing with manufacturer, insurance company etc. 10/10 service.
Very happy with our service. The estimator went out of his way to provide the best solution and price. Work started when promised and our house was back to normal in a few hours. Workers were very polite and cleaned up the work area before they left.
Very fast and reliable service! Technician was at our house less than 2 hours after I’d put in a request. He gave us a good quote and fixed our issue in under 30 minutes. Thanks Neo!
Jobs customers hired them for
| Job | Reviews | Category typical |
|---|---|---|
| Drain cleaning | 9 | $161–$429 |
| Water heater installation | 7 | $1.2k–$2.8k |
| Plumbing pipe repair | 6 | $251–$1.2k |
| Sewer repair | 4 | — |
| Plumbing leak repair | 3 | — |
| Plumbing leak detection | 3 | $57–$478 |
| Toilet installation | 2 | — |
| Toilet repair | 2 | $176–$517 |
Compare with
Photos
Customer reviews
5.0 ★★★★★ 135 reviews on Google · rating breakdown
Reviews from Google, shown as published (original wording, unedited).
We are very pleased with the HVAC services provided by United. They come to help immediately and offers professional advice based on assessed situations. Special shout out to technician Vitaly who stayed late until 9pm to make sure we have hot water back on running before he left. His workmanship, professionalism and attention to details is above and beyond our expectation.
- Price assessment: Reasonable price
- Price: $1,000+
- Services: Water heater installation
Thank you, Sea! We're so pleased to hear United could respond right away and get your hot water running again. A special shout-out right back to Vitaly — staying until 9pm to make sure the job was done right is exactly the kind of workmanship and dedication we're proud of at United Plumbing & Water Heaters. Thank you for trusting us with your water heater installation, and we're here whenever you need us!
I recently had United HVAC install a new ducted heat pump system in my home, and the entire experience was very good. From the beginning their communication was very clear, so I always knew what to expect next. They handled all the complicated permit paperwork, scheduled the inspection, and guided me through the eligible rebate programs. The technicians were highly professional, arriving on time for every single appointment. While they originally estimated it would be a 2-day project, they worked efficiently and wrapped up half a day early. As someone who isn't familiar with heat pump systems, I really appreciated how patiently the technician answered all of my questions and took the time to walk me through the system's operation. Their work is very neat. They kept the floor clean, and arranged all the new pipes and wires beautifully. I highly recommend United HVAC!
- Price assessment: Reasonable price
- Price: $1,000+
- Services: Service not listed
Chun-Sung, thank you so much for your fantastic review! It's wonderful to hear that our team at United HVAC, Plumbing & Electrical was able to go above and beyond to ensure your AC was repaired with the right parts. Your high recommendation means a lot to us, and it truly motivates us to maintain our commitment to exceptional service. We look forward to assisting
Installed HVAC system. High quality service!
Hello Stefan, Thank you so much for sharing your kind words! It's truly wonderful to hear that you've been happy with both our installations and maintenance services. Our team works hard to make sure everything runs smoothly, and it's great to know we've made life a bit easier for you. We take pride in our responsive support and professional technicians. Your satisfaction is our top priority, and we’re glad it shines through. Remember, whether it’s water heater repairs, drain cleaning, or sewer line issues, we’re just a call away and always ready to help. Your support means the world to us!
Friendly and professional service technician. Melvin performed a tankless water heater flush and also the plumbing inspection of my home.
- Price assessment: Not sure
- Price: $200–300
- Services: Service not listed
Thank you so much for sharing your positive experience with us! We're thrilled to hear that our technician, Melvin, provided you with the friendly and professional service you deserve. It's great to know that the tankless water heater flush and plumbing inspection went smoothly. We strive to ensure every customer feels taken care of, and your words mean the world to us. If you ever need assistance with water heater repair, replacement, or installation, as well as drain cleaning or sewer line repair, please don't hesitate to reach out. We're always here to help!
United HVAC & Plumbing’s technicians were professional and good communicators. They came when scheduled and diagnosed our plumbing issues quickly and thoroughly. The team worked quietly, quickly, and cleanly to replace a long kitchen drain and a leaking toilet. Both repairs are working well and are improvements in the previous conditions. (We have an old house and it has seen many fixes over the years.) I would definitely hire United HVAC and Plumbing again for any needed repairs!
- Services: Drain cleaning, Plumbing pipe repair, Toilet installation
Thank you so much for sharing your wonderful experience with us! We're thrilled to hear that our team left such a positive impression and was able to tackle the challenges of your old house with care and professionalism. It's fantastic to know that everything is working smoothly now. Your words truly warm our hearts and confirm our commitment to excellence. If you ever need more support, whether it's for water heater repairs or drain cleaning and sewer line repair, we're always here and happy to help. Thanks again for trusting us with your home!
Extremely professional, explained the issue with our old water heater, the entire procedure, what to expect during new installation, dealing with manufacturer, insurance company etc. 10/10 service.
- Price assessment: Great price
- Price: $1,000+
- Services: Water heater installation
Thank you so much for sharing your wonderful experience! It truly warms our hearts to know that you felt well taken care of during your water heater installation. We understand how important it is to clearly explain each step and make the process as smooth as possible, so we're thrilled that our team could be of help. Your kind words motivate us to keep delivering excellent service. Remember, whether it’s water heater repair, replacement, installation, or tackling drain cleaning and sewer line repair, we’re just a call away and ready to help. Thanks again!
The annual inspection went well. Everything checked out positively. My Technician was very professional and let me know the frequency of when my filter should be replaced. Good experience.
Thank you so much for sharing your positive experience with us! We're thrilled to hear that your annual inspection went smoothly and that our technician provided you with helpful information about your filter. We take pride in delivering professional service and ensuring everything's running positively for you. It's wonderful to know you had a good experience. Remember, we’re always here to lend a hand with any of your plumbing needs, like water heater repair, replacement, installation, or even drain cleaning and sewer line repair. Looking forward to being of service to you again!
Very experienced specialist, patient to explain the work scope and the quote. Very good experiences with United.
- Price assessment: Reasonable price
- Services: Plumbing leak repair
Thank you so much for sharing your positive experience with us! It truly warms our hearts to hear that you found our specialist experienced and helpful. We believe in taking the time to explain each step to ensure our customers feel comfortable and informed. Knowing you had a great experience with United Plumbing is the greatest reward. Remember, whether it's a water heater repair, replacement, installation, or clearing a stubborn drain or sewer line, we're here and happy to help anytime. Thanks again for your kind words!
Great and prompt service.
- Price assessment: Reasonable price
- Price: $300–400
Thank you so much for your kind words! We're thrilled to hear that you appreciated our service. We always aim to be prompt and efficient, so knowing we hit the mark for you is incredibly rewarding. Your feedback truly brightens our day and motivates us to keep doing our best. Don't hesitate to reach out whenever you need assistance with water heater repair, replacement, installation, or even drain cleaning and sewer line repair. We’re always here to help with a smile!
Business details
- Address: 1159 Sonora Ct, Sunnyvale, CA 94086
- Phone: (408) 752-5520
- Website: plumbing-united.com
- Service area: Sunnyvale, CA

