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Providing Plumbing & HVAC Service In The Inland Empire

Klaus & Sons is located in Montclair, CA and serves the entire Inland Empire area with the best in plumbing and HVAC service. Our expert plumbers and technicians are happy to serve homes and businesses in Upland, Rancho Cucamonga, Claremont, Ontario and Chino Hills. Not sure if we can service your area? Call us today and we are happy to try!

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Recent Jobs and Reviews

Rated 4.9 out of 5 stars based on 398 customer reviews

Customers say: The reviews exhibit a positive sentiment, with many customers expressing satisfaction with the services provided. Positive reviews frequently mention aspects such as professionalism, punctuality, expertise, and excellent customer service. Customers also appreciate the quality of the work, the efficiency of the repairs, and the friendly and respectful attitude of the technicians. Additionally, there are mentions of reliability, trustworthiness, and the ability to handle various plumbing issues. Negative reviews are present but are less frequent and tend to focus on specific issues or experiences. However, the overall tone remains positive, with many customers expressing gratitude and recommending the services to others.

Job Locations and Reviews

Review
earl bernard - Upland, CA 91784
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

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

Review
Great service man..Mario was easy n knowledgeable in explaining our dilemma to us...
Roy Mora - Chino, CA 91710
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

We count ourselves lucky for customers like you and look forward to working with you again in the future!

Review
Mario did a great job on clearing my clogged kitchen sink drain.
Martha Logan - Ontario, CA 91764
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

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

Review
Excellent A/C service from your technician, Raul.
Richard Carniello - Upland, CA 91786
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

Thank you so much for taking the time to leave us a 5-star review!

Review
Always a professional, clean and reliable. Thank you for another great job completed successfully.
Christopher Seymour - Rancho Cucamonga, CA 91737
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

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
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.

Review
They showed up early, Mario was extremely polite and helpful. The cost was reasonable. Definitely would recommend them.
Joe Murphy - Pomona, CA 91768
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

Thank you so much for this 5-star review. We really appreciate you being a customer and helping to share the word about us. We’re here for you anytime.

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

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

Review
Wes did an excellent job and very patient as we tried to decide on which items we wanted.
Betty Schnell - Upland, CA 91786
Response from Klaus & Sons Plumbing, Heating & Air Conditioning:

We count ourselves lucky for customers like you and look forward to working with you again in the future!

Trusted Quality &
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