Ontario, CA

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Ontario Plumbing, Heating & Air Conditioning Experts

Full Plumber Services In & Around Ontario

Ontario is one of the oldest communities in the Inland Empire. So much of Ontario has unique, historical homes and buildings. A special city needs a special plumber that can service, replace and help you maintain all the plumbing in your home – old or new. At Klaus & Sons, a trusted name in the industry, we’re proud to bring our expertise from Montclair, CA, to serve the thriving community of Ontario. With years of experience, we are committed to providing exceptional heating, cooling, and plumbing solutions to residents and businesses in Ontario.

Give us a call 909-982-5698 or fill out our contact form for immediate assistance.

Emergency Plumbing:

For those unexpected plumbing emergencies, Klaus & Sons is here to provide prompt and reliable emergency plumbing services. We understand that issues can arise at any time, and our experienced team is ready to assist you 24/7.

Air Conditioning Installation and Repair:

When the summer heat sets in, having a reliable air conditioning system is essential. Our team specializes in the installation and repair of energy-efficient AC units, ensuring you stay cool and comfortable when the temperatures rise. We’re here to make your home a haven from the summer sun.

Heating Installation and Repair:

Stay warm and cozy during the colder months with our expert heating installation and repair services. Whether you need a new heating system installed or require prompt repairs to your existing one, Klaus & Sons has you covered. Our skilled technicians ensure your home remains comfortable year-round.

Residential Plumbing Services:

From routine maintenance to complex plumbing issues, Klaus & Sons is your trusted partner for all your residential plumbing needs. Leaky faucets, clogged drains, and more – we’ve got the solutions to keep your water systems flowing smoothly.

Water Heater Repair & Replacement:

Our expert technicians are skilled in water heater repair and replacement services. We ensure your hot water needs are met, providing you with reliable access to hot water whenever you need it.

Why Choose Klaus & Sons:

  • Experienced Team: Our skilled technicians are highly trained and experienced in the HVAC and plumbing fields. You can trust us to provide efficient and reliable services.
  • Customer-Centric Approach: We value your satisfaction and work closely with you to meet your specific needs and budget.
  • Quality Products: We use top-quality products and materials, ensuring the longevity and effectiveness of our installations and repairs.
  • Emergency Services: We understand that heating, cooling, and plumbing issues can arise at any time. Our emergency services are available 24/7 to address urgent problems promptly.

Contact Us:

When you choose Klaus & Sons, you’re choosing excellence in HVAC and plumbing services. We’re dedicated to ensuring the comfort and functionality of your Ontario, CA property. For reliable, professional, and friendly service, contact us today at 909-982-5698 to schedule an appointment or request a quote. Klaus & Sons is here to make your life more comfortable, one service at a time.

Call 909-982-5698 the professional HVAC technicians at Klaus & Sons Plumbing Heating & Air Conditioning in Ontario, CA today for air conditioning service or a free estimate! 

Recent Jobs and Reviews in Ontario, CA

Rated 4.9 out of 5 stars based on 29 customer reviews

Customers say: The reviews exhibit a positive sentiment towards Klaus & Sons Plumbing, with many customers expressing satisfaction with their services. The positive reviews highlight the company's quick response, professionalism, and quality of work. Customers appreciate the technicians' knowledge, friendliness, and efficiency, with many mentioning their willingness to go above and beyond to ensure customer satisfaction. Additionally, customers praise the company's reliability, competitive pricing, and the ability to handle various plumbing issues. Negative reviews are present but are outweighed by the positive ones. However, the negative reviews mainly focus on specific incidents or experiences, with some customers expressing dissatisfaction with the initial service or the resolution of the issue. Overall, the reviews suggest that Klaus & Sons Plumbing provides reliable and high-quality plumbing services, with a majority of customers expressing satisfaction with their experiences.

Our Local Reviews by City

Job Locations and Reviews

Heather P.
Heather P. Checked in
Per James all day job Thursday and Friday.
Ontario, CA 91764
Review
On time. Courteous. Knowledgeable. Efficient.
Karen - Ontario, CA 91764
Heather P.
Heather P. Checked in
9098221500 please change phone number to this
Ontario, CA 91762
Heather P.
Heather P. Checked in
8-12. COD. Requested Fernando. Call when in route. I spoke to Karen, they want to have their ac unit serviced before the summer.
Ontario, CA 91764
Heather P.
Heather P. Checked in
10-12. Time requested. COD. I spoke to Ingrid, they need help clearing their bathroom sink drain. Its clogged but nothing else is affected.
Ontario, CA 91762
Heather P.
Heather P. Checked in
10-12. Time requested. COD. I spoke to Ingrid, they need help clearing their bathroom sink drain. Its clogged but nothing else is affected.
Ontario, CA 91762
Heather P.
Heather P. Checked in
(8-10) COD. Spoke with Don. They have a logged up kitchen sink on the g/d side. It started last night. They would like to get it cleared ASAP, they have to leave their home by 10AM! Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91764
Heather P.
Heather P. Checked in
Payment has been received, THIS IS A PREPAID JOB! NO NEED TO COLLECT 🙂
Ontario, CA 91762
Heather P.
Heather P. Checked in
(8-10) COD. Spoke with Priscilla, She has a clogged toilet and would like to get it cleared. Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91761
Heather P.
Heather P. Checked in
11 - 2. COD. Spoke to Sharon. AC unit not working, it is 81 in home and not cooling down. Thinks it's the thermostat. It'll go on after about 20 minutes, go down 2 degrees then stop. It was only installed a few years ago but she said the company isn't in business anymore and she's still paying it off. Quoted $158 for diagnostic.
Ontario, CA 91761
Heather P.
Heather P. Checked in
(3-5) Net 30. Spoke with Maria, (909) 268-8791. Her tenant has a clogged up main line. Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91762
Heather P.
Heather P. Checked in
Ontario, CA 91762
Heather P.
Heather P. Checked in
Confirmed that Jake's arrival between about 12noon-3pm works 🙂 Draining & install pan for $145 per Jesse.
Ontario, CA 91761
Heather P.
Heather P. Checked in
10 - 12. Spoke to Virginia. Mario was out for hydro jet laundry waste line via clean out. She thinks it's backing up again. Did one pair of jeans this morning and extra small load, noticed tub almost full. Please check out and if separate issue not under warranty please provide findings and pricing!
Ontario, CA 91764
Heather P.
Heather P. Checked in
(12-2 req) COD. Spoke with Charlotte. She currently has NO HOT WATER to her home. Wes installed this water heater at her property in 2013, all warranties have elapsed! It is located in a hallway closet in the front part of her house. Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91762
Heather P.
Heather P. Checked in
If blower motor I’d approved. Payne. M #PA13NR048-H. P #PA13NR048000AHAA. S #2609X63744
Ontario, CA 91762
Heather P.
Heather P. Checked in
(10-12 Day and time REQ) COD. Spoke with Chris. He has an older house, built in the 60s, and he's pretty sure his cast iron lines are corroding. He tried to perform a hydrojet on the lines himself and he thinks he ruptured a part of the line. He had debris and water spewing out of his cleanout. Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91764
Heather P.
Heather P. Checked in
(10-12 Day and time REQ) COD. Spoke with Chris. He has an older house, built in the 60s, and he's pretty sure his cast iron lines are corroding. He tried to perform a hydrojet on the lines himself and he thinks he ruptured a part of the line. He had debris and water spewing out of his cleanout. Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91764
Heather P.
Heather P. Checked in
12 - 2. Possible call-back. Spoke to Lori. Amen was out on June 2nd and installed a part that was supposed to stop this issue. They still have to restart the water heater every time they need to shower which she thought the part was supposed to keep them from having to do that. Please advise.
Ontario, CA 91762
Heather P.
Heather P. Checked in
12 - 2. Possible call-back. Spoke to Lori. Amen was out on June 2nd and installed a part that was supposed to stop this issue. They still have to restart the water heater every time they need to shower which she thought the part was supposed to keep them from having to do that. Please advise.
Ontario, CA 91762
Heather P.
Heather P. Checked in
12 - 2. Per Sal, shut off valve installed back unit
Ontario, CA 91762
Heather P.
Heather P. Checked in
10-12. Req Wes. I spoke to John, they had Wes out in April this year clearing their main line and the line is backed up again. He's unsure why it keeps happening.
Ontario, CA 91762
Heather P.
Heather P. Checked in
12-2. COD. Call (626) 712-0973 when in route. I spoke to David, they broke a galvanized pipe in the front of their home that is leaking all over their driveway and lawn. They turned the water off and need to have it repaired.
Ontario, CA 91762
Heather P.
Heather P. Checked in
12-2. COD. Call (626) 712-0973 when in route. I spoke to David, they broke a galvanized pipe in the front of their home that is leaking all over their driveway and lawn. They turned the water off and need to have it repaired.
Ontario, CA 91762
Heather P.
Heather P. Checked in
(10-12 REQ) OSE. Spoke with Ramona, she is the homeowner. She says that her hallway bath has a shower faucet that broke off. They were trying to reattach, but there's a lot of old adhesive/caulking that's in the way? Please get approval on any pricing BEFORE performing any work!
Ontario, CA 91764
Heather P.
Heather P. Checked in
4 - 6. COD. Spoke to Morgan. Couple of slow shower drains and one of them is backing up with waste water, toilet is clogged too. Brown water in shower next to it. Please advise and give pricing before performing work!
Ontario, CA 91762
Review
Did a good job
Leo - Ontario, CA 91762
Review
On-time, friendly, communicative and professional service- excellent!
Harold - Ontario, CA 91762
Review
Our shower was clogged. We called and were scheduled for the same day. The plumber was courteous, clean and friendly. he did the job and did not leave a mess for us to clean up. Great job. Thank you
Matt - Ontario, CA 91762
Review
great service
Jackie - Ontario, CA 91764
Review
Excellent technician.
Terry - Ontario, CA 91762
Review
Quick professional service, from the person who took the request on phone to the service technician. Great service!
Lupe - Ontario, CA 91762
Review
Got the problem fixed on a reasonable amount of time clean job technician was very knowledgeable and courteous
Jacob - Ontario, CA 91764
Review
Heather; every time we've been serviced by your company Klaus n' Sons ! You've always been the greatest ! We've tried other companies because of scheduling issue on our part ! Not yours! Don't come close to!! We appreciate you guys !! When I call to schedule ; the girls are the best very attentive and knowledgeable to our concerned!! Soo to your well organized company ! Thank yu very much!! Sergio
Sergio - Ontario, CA 91764
Response from Klaus & Sons:

We're thrilled to hear that our heating and cooling service exceeded your expectations. Thanks for the kind words!

Review
The service was excellent and serviceman David was awesome.
Guy - Ontario, CA 91761
Response from Klaus & Sons:

Thank you so much for taking the time to leave us this amazing review!

Review
When I called Klaus and Sons, Heather answered and was so friendly, courteous and helpful! She listened to my tale of woe about the leak and she scheduled an appointment the next morning. She later checked with me about a minor schedule adjustment with Wes, who did a fantastic job fixing the leak!! I hope I don't have future plumbing issues but when I do, I will call Klaus and hope to speak to Heather!
Rosemarie - Ontario, CA 91762
Review
Great timely service, polite and on time. Thanks
Bryan - Ontario, CA 91764
Review
Justin did an excellent job fixing our burst pipe. He got to our house quickly and got the job done fast. We would definitely recommend this business.
Teresa - Ontario, CA 91762
Review
Wes and his team did a great job!!!
Ken - Ontario, CA 91762
Review
Tech was early assessed the problem and got to work. Was done in no time. Left the work area very clean Andrew was our tech he always does a great job. Glad to have him any time.
Barbara - Ontario, CA 91764
Review
Klaus & Sons very professional puts the customer needs first have used them for years
Linda - Ontario, CA 91761
Review
Mario did a great job on clearing my clogged kitchen sink drain.
Martha Logan - Ontario, CA 91764
Response from Klaus & Sons:

We thank you for sharing your positive experience. It made our day.

Review
Great service!!!
Mish - Ontario, CA 91764
Response from Klaus & Sons:

We are so grateful for your 5-star review. Thanks for sharing your rating with us and the community.

Review
Fast service! Had my broken pipe fixed within an hour after I called!
Kaydee - Ontario, CA 91762
Review
Recommend to others anytime
Linda - Ontario, CA 91761
Review
On time. Quick installation Have trusted Klaus & Sons for over 40 years.
Earl - Ontario, CA 91764
Response from Klaus & Sons:

Thank you so much for your 5-star review! We will share this with the team to let them know to keep up the amazing work!

Review
They are always efficient, has great customer service, and I don't feel ripped off
Angel - Ontario, CA 91762
Review
The Tech was good fixed the problem. Price was high but that is with all services these days.
GSR - Ontario, CA 91761
Review
Very knowledgeable and professional service
Terry - Ontario, CA 91762
Review
The technician was very helpful and addressed the issue quickly.
Doreen - Ontario, CA 91761
Review
Great communication, they were able to replace my water heater same day!
Bryan - Ontario, CA 91762
Response from Klaus & Sons:

Thank you so much for taking the time to leave an excellent rating. We really appreciate your business.

Review
Service was excellent but the pricing is outrageous. I provided the faucet, Jake was here for approximately 2 hours and the bill was $739.74. That is over $350.00 an hour. Can you please doublecheck the bill and verify that that $739.74 is correct.
Mary - Ontario, CA 91761
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