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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!

Recent Jobs and Reviews

Rated 4.9 out of 5 stars based on 255 customer reviews

Customers say: The reviews exhibit a positive sentiment, with a majority of customers expressing satisfaction with the services provided by Klaus & Sons. The recurring themes include praise for the quality of work, professionalism, reliability, and excellent customer service. Customers also appreciate the technicians' expertise, friendliness, and respect shown to senior women. The positive reviews highlight the company's efficiency, promptness, and ability to address various HVAC issues. Additionally, customers mention the company's commitment to using high-quality products and their willingness to go the extra mile to ensure customer satisfaction. Overall, the reviews convey a sense of trust and confidence in Klaus & Sons as a reliable and trustworthy HVAC service provider.

Job Locations and Reviews

Review
earl bernard - Upland, CA 91784
Review
Great service man..Mario was easy n knowledgeable in explaining our dilemma to us...
Roy Mora - Chino, CA 91710
Review
Mario did a great job on clearing my clogged kitchen sink drain.
Martha Logan - Ontario, CA 91764
Review
Excellent A/C service from your technician, Raul.
Richard Carniello - Upland, CA 91786
Review
Always a professional, clean and reliable. Thank you for another great job completed successfully.
Christopher Seymour - Rancho Cucamonga, CA 91737
Review
We have been using Klaus and sons for 20 years now and would highly recommend them
Nancy & Tom Telford - Claremont, CA 91711
Review
They showed up early, Mario was extremely polite and helpful. The cost was reasonable. Definitely would recommend them.
Joe Murphy - Pomona, CA 91768
Review
Great service!!!
Mish - Ontario, CA 91764
Review
Wes did an excellent job and very patient as we tried to decide on which items we wanted.
Betty Schnell - Upland, CA 91786
Trusted Quality &
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