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
Customers say: The reviews exhibit a positive sentiment towards Klaus and Sons Plumbing. Customers express satisfaction with the service technicians' punctuality, professionalism, and ability to resolve plumbing issues accurately and efficiently. Positive reviews highlight the technicians' knowledge, friendliness, and the quality of the work performed. Customers also appreciate the company's reliability, promptness, and reasonable pricing. The recurring themes in the reviews include prompt arrival, effective problem-solving, professionalism, and satisfaction with the services provided. However, there are a few negative reviews that mention issues with punctuality, but they are outweighed by the positive experiences shared by the majority of customers. Overall, the sentiment is positive, with customers expressing gratitude and satisfaction with Klaus and Sons Plumbing's services.
Job Locations and Reviews
Always a professional, clean and reliable. Thank you for another great job completed successfully.
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!
We have been using Klaus and sons for 20 years now and would highly recommend them
Thank you so much for taking the time to leave an excellent rating. We really appreciate your business.
They showed up early, Mario was extremely polite and helpful. The cost was reasonable. Definitely would recommend them.
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.
Wes did an excellent job and very patient as we tried to decide on which items we wanted.
We count ourselves lucky for customers like you and look forward to working with you again in the future!