Claremont CA Plumbing, Heating & Air Conditioning

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Your First Choice For Plumbing & HVAC Services In Claremont, CA

Looking for plumbing or HVAC services in Claremont, CA? Look no further than Klaus & Sons. We offer 24-hour emergency plumbing service, so you can rest assured that we'll be there when you need us. We also provide maintenance, installation and repair of plumbing and HVAC systems. Whether you're having a plumbing emergency or just need routine maintenance, our team is here to help. Contact us today to schedule a consultation. We look forward to serving you!

Since 1973, we've cared for the citizens of Claremont, CA. See why we we're their top choice by reading the reviews below!

Recent Jobs and Reviews in Claremont, CA

Rated 4.9 out of 5 stars based on 102 customer reviews

Customers say: The reviews exhibit a positive sentiment, with recurring themes of satisfaction, professionalism, and reliability. Customers praise the promptness, friendliness, and expertise of the technicians, as well as the fair pricing and excellent customer service. Positive reviews also mention the efficiency, helpfulness, and solutions provided by the technicians. The Klaus & Sons team is consistently commended for their prompt and thorough service, leaving the work area clean and resolving issues effectively. Customers express gratitude for the company's reliability, responsiveness, and the quality of their work. Additionally, the technicians are recognized for their knowledge, patience, and ability to explain complex issues in a clear and understandable manner. Overall, the reviews convey a sense of trust, satisfaction, and confidence in Klaus & Sons as a reliable and trustworthy plumbing and HVAC service provider.

Job Locations and Reviews

Heather P.
Heather P. Checked in
(8-10) COD. Spoke with Zeb. They have a leak in a pipe that goes to their tankless water heater. They think that maybe they just need a maintenance on the unit as they haven't really been doing that. We installed it, but all warranties have elapsed as of 12/2025. Please get approval on any pricing BEFORE performing any work!
Claremont, CA 91711
Heather P.
Heather P. Checked in
(8-10) COD. Spoke with Gloria. she is the realtor. Jessica and Clayton are the home buyers. PLEASE ALL GLORIA WHEN YOU'RE ON THE WAY, about 30 mins out (626) 484-7798 -- The property is vacant, she will need to let you in and give you access to the property! They would like to get a camera inspection on the sewer line done. Please get approval on any pricing BEFORE performing any work! Gloria will be responsible for payment upon completion.
Claremont, CA 91711
Claremont, CA - 4:30 - 5 (UPDATED TIME). Call when in route. COD. I spoke to Jim, they need 2 fill valves for toto toilets replaced.
Heather P.
Heather P. Checked in
4:30 - 5 (UPDATED TIME). Call when in route. COD. I spoke to Jim, they need 2 fill valves for toto toilets replaced.
Claremont, CA 91711
Heather P.
Heather P. Checked in
10 -12 (req; he may be free earlier has dentist appt. but will call when on way back if before 10am). COD. Per James, parts are in.
Claremont, CA 91711
Heather P.
Heather P. Checked in
2 - 4. COD. Spoke to Marc. Hot water in guest house has gone out, they have a tankless water heater. We installed it in 2019. Please check out and provide pricing before performing any work!!
Claremont, CA 91711
Heather P.
Heather P. Checked in
10-12. COD. Time and tech req. Call when in route. I spoke to Mary, they want to get an updated estimate for their hvac unit. They had one back in July but need a newer one.
Claremont, CA 91711
Claremont, CA - 2-4. COD Call 
(209) 639-8792 when in route. CALL IS IN ALLEY. I spoke to John, the drain to the kitchen sink is going down really slow.
Heather P.
Heather P. Checked in
2-4. COD Call (209) 639-8792 when in route. CALL IS IN ALLEY. I spoke to John, the drain to the kitchen sink is going down really slow.
Claremont, CA 91711
Claremont, CA - (10-12) PLEASE CALL WHEN YOU'RE ON THE WAY, (518) 588-5440!! Returning to complete work! Amen has already completed the angle stop, just installing a cartridge. Amen already collected payment in full!
Heather P.
Heather P. Checked in
(10-12) PLEASE CALL WHEN YOU'RE ON THE WAY, (518) 588-5440!! Returning to complete work! Amen has already completed the angle stop, just installing a cartridge. Amen already collected payment in full!
Claremont, CA 91711
Claremont, CA - (10-12) PLEASE CALL WHEN YOU'RE ON THE WAY, (518) 588-5440!! Returning to complete work! Amen has already completed the angle stop, just installing a cartridge. Amen already collected payment in full!
Heather P.
Heather P. Checked in
(10-12) PLEASE CALL WHEN YOU'RE ON THE WAY, (518) 588-5440!! Returning to complete work! Amen has already completed the angle stop, just installing a cartridge. Amen already collected payment in full!
Claremont, CA 91711
Claremont, CA - (8-10, as close as possible to 8am!!) COD. Spoke with Dee. She already spoke with James about the issue, approval for us to be on premises from the homeowner's son via email screenshot is attached. Dee is handling the payment, and will approve the work to be done. Please get approval on ANY pricing BEFORE performing any work!
Heather P.
Heather P. Checked in
(8-10, as close as possible to 8am!!) COD. Spoke with Dee. She already spoke with James about the issue, approval for us to be on premises from the homeowner's son via email screenshot is attached. Dee is handling the payment, and will approve the work to be done. Please get approval on ANY pricing BEFORE performing any work!
Claremont, CA 91711
Review
Great Service
Rudy - Claremont, CA 91711
Review
Service was excellent
Alisa - Claremont, CA 91711
Review
Arrived on time. Was clear about the goal for each day. Very professional team and respectful. Cleanup was excellent.
Dan - Claremont, CA 91711
Review
Owner
James - Claremont, CA 91711
Review
Great service and technician was thorough and very nice. These are my plumbers and heating and airconditioning people of choice.
Karen - Claremont, CA 91711
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Fast
Lime - Claremont, CA 91711
Review
Very Prompt service. I called 4:30 PM and a service tech was at my home 11:00 AM the next day.
David - Claremont, CA 91711
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Amazing service
Elana - Claremont, CA 91711
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Punctual
George - Claremont, CA 91711
Review
Patient, courteous and personable.
Katherine - Claremont, CA 91711
Review
Excellent Service!
Erin - Claremont, CA 91711
Review
I had a great experience with Klaus and sons. Mario came out to my home and was professional and courteous and provided me with options on how to address my plumbing issue. Everyone I talked to from their office was also very professional and courteous. I will use them again.
LW - Claremont, CA 91711
Review
SUPERB technician!
Rudy - Claremont, CA 91711
Review
Used them for years. They are good at what they do. They are always responsive, even on holidays and after hours. They are concerned with making sure they fix your issue.
Danica - Claremont, CA 91711
Review
Once again Dan's crew at Klaus & Sons has provided me with excellent service! I am a residential contractor and have had Klaus & Sons work on my projects for over 15 years. They are punctual, professional and their work is great!
Keith Goff - Claremont, CA 91711
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

It was a pleasure serving you and your family. Thank you for sharing your kind words with us. It means the world to us and to our entire team!

Review
Great service, careful work, friendly.
Katya - Claremont, CA 91711
Review
Great service ! I would highly recommend!
Ron - Claremont, CA 91711
Review
Great service…very prompt and professional!
Cordell - Claremont, CA 91711
Review
Took care of the problem immediately
Charlotte - Claremont, CA 91711
Review
I use Klaus & Sons for A/C, Plumbing and Heating at both my home and place of business. They are always on time, friendly and professional. I highly recommend!
Cathy - Claremont, CA 91711
Review
Arrived promptly. Evaluated the issue. Secured the part. Successfully stopped the leak. Left the shower clean and shiny!!
Sharon - Claremont, CA 91711
Review
Excellent Service!
Chris - Claremont, CA 91711
Review
From scheduling to completion, a pleasure to interact with the team. Fernando was knowledgable and explained everything very clearly.
Riki Wolf - Claremont, CA 91711
Review
Very friendly people. Quick response and service.
Christina - Claremont, CA 91711
Review
Amin was very professional and polite!! He explained the options and worked quickly to resolve my plumbing issue. I appreciated his being clear and honest with his explanation.
Angela - Claremont, CA 91711
Review
Mario did a great job! 👍
Andrea - Claremont, CA 91711
Review
We have been using Klaus and sons for 20 years now and would highly recommend them
Nancy & Tom Telford - Claremont, CA 91711
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

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

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