5623 Arrow Hwy
Montclair, CA 91763
(909) 982-5698

Local Reviews

Rated 4.9 out of 5 stars based on 440 customer reviews

Excellent Service as Always!

Excellent service as always. Once again Klaus comes to the rescue. They were able to come the same day and unclogged the kitchen sink. Mario was knowledgeable and kind. Thank you for your help!

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Saturday Problem Resolved

Quick efficient resolution to a Saturday problem. Klaus is our go-to plumber!

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Excellent Service!

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Fast and Affordable Service

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SUPERB technician!

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Responsive even after hours

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.

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Fantastic!

Quick, efficient, affordable. Thank you

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Good service bad house educate

The worker did a good job with the repair, how ever, he dropped lots of insulation when working in the attic and bumped, broke a drawer from on a nearby dresser.

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Excellent Service

Called to ask if early was ok. Knowledge about our issues. Fixed the problem quickly.

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Excellent Service

Great. Explained the problem clearly.

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You guys were awesome

Your technicians went above and beyond duty. They were friendly, informative, and all in all excellent customer service. They did a great job on installing my AC unit I would definitely recommend you to somebody and I would definitely use you again

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Filter purchase

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Thank you-so efficient and honest!

Thank you Courtney and Mario

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Excellent service

very fast and efficient. the young guy that came was very polite well mannered. and very professional

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Excellent, professional service!

We have used Klaus and Sons for many years and are never disappointed. They provided excellent service, their employes are knowledgeable and professional, and their follow up is amazing!

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Job Locations

AndrewE@klausandsons.com

AndrewE@klausandsons.com Job Checkin

2-4. Req tech. COD. Call when in route. I spoke to Killeen, they need to have their tankless water heater serviced and possibly replace filter.


wes@klausandsons.com

wes@klausandsons.com Job Checkin

2-4. Time requested. I spoke to Herlin, they need to have their toilet wax ring re sealed and possibly have their water heater serviced. It is a tank water heater.


Heather P.

Heather P. Job Checkin

(within the hour) Warranty. Spoke with Cora. The faucets that Mario installed last week are loose. She would like to please get them tightened up.


amen@klausandsons.com

amen@klausandsons.com Job Checkin

12-2. COD. Call when in route. I spoke to Linda, the toilet is leaking from the base and they want to have it fixed.


wes@klausandsons.com

wes@klausandsons.com Job Checkin

2-4. Call when in route. Possible warranty. I spoke to Mark, they had a water heater installed by Wes in 2023 and now they're not getting any hot water in their home.


amen@klausandsons.com

amen@klausandsons.com Job Checkin

(10-12) customers accepted the estimate


sal@klausandsons.com

sal@klausandsons.com Job Checkin

(12-2) COD. REQ SAL. Spoke with Earl, he is having issues in his kids' bathroom. The handle is completely loose and isn't flushing at all. They also need a new toilet seat. Please get approval on any pricing BEFORE performing any work!


Heather P.

Heather P. Job Checkin


Heather P.

Heather P. Job Checkin

Called to collect but Nancy wasn't there, left a message for her to call us back for payment/if we can charge card on file


sal@klausandsons.com

sal@klausandsons.com Job Checkin

Within the hour. I spoke to Tira, they want to have a 50 gallon water heater installed.


wes@klausandsons.com

wes@klausandsons.com Job Checkin

10 - 12. Spoke to Carrie. Would like all drains cleared, shower, etc.


Heather P.

Heather P. Job Checkin

(10-12) Callback. Spoke with Karri, the tub that Mario cleared the drain for on 8/25/25 (still covered under the 30 day warranty given) is now backing up again. There is about an inch of standing water in the tub.


Dan@klausandsons.com

Dan@klausandsons.com Job Checkin


amen@klausandsons.com

amen@klausandsons.com Job Checkin

2-4. COD. Call when in route. I spoke to Susan, the pilot light went out to water heater and the machine is flashing lights constantly. They're not getting any hot water.


Heather P.

Heather P. Job Checkin

8 - 10. COD. CC on file. Spoke to Alva. She just bought this home and isn't moved in yet so it's empty but you will have access since painters are there etc. so you can go right in. She has an old bathroom, individual handles for shower valve broken and need to get replaced. Please call her at (760) 696-2290 with findings/approval for pricing! She will be by her phone between 8 and 10am. Ask if she would like to charge the card on file after work is completed.