Klaus & Sons Plumbing, Heating & Air Conditioning
Company Overview
Klaus & Sons Plumbing, Heating & Air Conditioning was established in Montclair in 1973. Our staff is knowledgeable, professional, and thoroughly trained. Our commitment is to finish every project right the first time, every time.
For over 38 years, Klaus & Sons has proudly served both residential and commercial clients in the Inland Empire. As a family-owned and operated business spanning three generations, we have built a reputation for excellence. Count on us for a FREE estimate on your heating, air conditioning, or plumbing services.
With our 24/7 service, we are here for you during those late-night emergencies. Our team specializes in sales, service, and installation of Carrier units, along with all your plumbing needs. We also offer services like attic insulation, duct replacement, and electrical enhancements. Over the years, we have achieved NATE and NCI Certifications, along with a BPI Home Performance Certification, enabling us to conduct Energy Assessments for your residence.
At Klaus & Sons, we guarantee our work and prioritize 100% customer satisfaction.
Business Services
- Bathtub installation
- Bathtub repair
- Building energy audit
- Drain installation
- Drain repair
- Faucet installation
- Faucet repair
- Garbage disposal repair
- Gas line installation
- Gas line repair
- HVAC installation or replacement
- HVAC system repair
- HVAC system maintenance
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Shower installation
- Shower repair
- Sink installation
- Sink repair
- Toilet installation
- Toilet repair
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
| Mon: | Open 24 hours |
| Tue: | Open 24 hours |
| Wed: | Open 24 hours |
| Thu: | Open 24 hours |
| Fri: | Open 24 hours |
| Sat: | Open 24 hours |
| Sun: | 12:00 AM - 12:00 AM (Next day) |
Recommended Customer Reviews
Professional, prompt, courteous and knowledgeable. Service was great and price was very reasonable.
Esther T.We've called them on three separate occasions for plumbing issues and they haven't let us down. They have been responsive, friendly, and knowledgeable. Thanks for fixing our plumbing issues promptly!
Chris S.We needed a plumber to fix a leak in a faucet that I couldn't get to myself. The plumber came and fixed it extra fast with no issues. Highly recommend
Always pleased to use Klaus & Sons for home and business. They show up on time, are neat in appearance, efficient, knowledgeable, and helpful. Their prices are reasonable and I complete confidence in their honesty.
Klaus & Sons have been my Go-To Guys* ever since ""inheriting"" them when moving here first as a renter 18 years ago. Wes the Wonder Plumber, Gene & Jesse the Awesome A/C Guys have always been prompt, efficient and effective in addressing whatever the issue. THANK YOU all!
Woke up at 4am to my water heater spewing out water. Was able to call Klaus n sons n they came out ASAP to fix my water heater in no time. So grateful for them. Thank u so much.
New AC just in time for excess heat warning! Crew showed up in masks, introduced themselves. Were very courteous and kept me informed of their progress. It was a 2-day install. Brought 4 people the second day. I was impressed by how well the crew worked together and communicated. The supervisor who sold me the unit came and checked on crew the first day. Great customer service -highly recommended company.
Natasha H.We will not use any other company for all things plumbing and HVAC related. We have had a number of issues in our older home and we can always count on Klaus & Sons to fix it right and at a fair price. They also get to use right away. We've even had them remodel one of our bathrooms and it turned out beautifully. I would give them 6 stars if I could. THE BEST!
Did an awesome job, highly recommend. They went above and beyond in the jobs they did. I will definitely call them next time I have other plumbing issues
Thanks again for the quick, expert and reliable help with the drain replacement; rapidly and well done, plus a quick troubleshoot on another issue. Wes is awesome. I don't have to worry, just call Klaus and Sons.

























