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

Local Reviews
for upland, ca

Rated 4.9 out of 5 stars based on 110 customer reviews

Great service

James was great. Gave us our options to choose from for water heater. No pressure chose to get a new water heater. He went and picked up and installed all within a few hours. He represented Klaus & Sons very well.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Always have been the best

They are a wonderful very responsive and professional company. I have used them for years

  • Overall Experience
  • Quality
  • Price
  • Convenience

Klaus and Son’s are always my go to for plumbing and a/c.

Dependable, trustworthy, professional, reliable and friendly.

  • Overall Experience
  • Quality
  • Price
  • Convenience

HVAC DUCTING REPAIR

Fernando and Evan arrived on time. They were professional, friendly and respectful. They explained what they planned to do. The work was completed quickly and they cleaned up thoroughly. I was exceptionally pleased with the entire project and would not hesitate to recommend them and Klaus highly.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent Service!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent Service

I can't say enough about Klaus & Sons. I had a situation that required me to shut down both of my restrooms. Not good to be in. Klaus & Sons came to our recuse very quickly and resolved my problem right away. I can't Thank them enough. I would highly recommend them to anyone, they are very professional and caring.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great experience

We had a challenging job for Klaus’ plumbers. We needed two bathroom faucets replaced (vintage 1975 on tile countertops). The sinks were so old that the plunger holes were too small and the sinks needed replacing. The guys found new replacements and carefully installed them. We called them back to cleanup more old grout and they did it right away. We are very pleased with the whole experience.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great Service

All staff at this company were polite, prompt, and professional, providing quality work and service!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great Service

Always professional & great service

  • Overall Experience
  • Quality
  • Price
  • Convenience

The Very Best Plumber EVER!

Always the very best service! We’ve been customers for 30+ years now and you are the most professional trade we have ever had working on a home!

  • Overall Experience
  • Quality
  • Price
  • Convenience

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service

  • Overall Experience
  • Quality
  • Price
  • Convenience

Great service!

Quick service to install new toilet and angle valve. Courteous and friendly plumber showed up and even hauled away old pot.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Customer satisfaction

  • Overall Experience
  • Quality
  • Price
  • Convenience

Professional plumbing service

SUPER RESPONSIVE

  • Overall Experience
  • Quality
  • Price
  • Convenience

Job Locations
for upland, ca

Heather P.

Heather P. Job Checkin

1 - 5. Per Julio: Call Matt Piat: 909-952-5956 when in route. Per Dan send Fernando and Raul. Per Dan check rear unit mini split and check front unit, 2 zones turning on at same time so check on unit.


Heather P.

Heather P. Job Checkin

(8-10 REQ) Possible callback, Amen ONLY. The sprinkler repair that was done earlier this year is pooling up water. 90 day warranty elapsed on 4/23/25, about 3 weeks ago. Please get approval on any pricing BEFORE performing any work if we need to charge.


Heather P.

Heather P. Job Checkin

8-10. COD. Call when in route. I spoke to Todd, the plumbing under their sink for the garbage disposal came undone and needs to be fixed.


Heather P.

Heather P. Job Checkin

8-12. Outside house. Call when in route. I spoke to Patty, they have a unit for their upstairs that is not working, it does not turn on at all.


Heather P.

Heather P. Job Checkin

3-5. I spoke to Belva, they need an outside water filter to be looked at as it is leaking alot. They had Sal out a few months ago to look at it and he shut it off now it is leaking again but she was worried and did not want to wait for him.

3-5. I spoke to Belva, they need an outside water filter to be looked at as it is leaking alot. They had Sal out a few months ago to look at it and he shut it off now it is leaking again but she was worried and did not want to wait for him.

Heather P.

Heather P. Job Checkin

12-2. COD. I spoke to Pauline, they have a leak in the wall when they use the water fountain. Also have a couple of toilets on site that need repair.


Heather P.

Heather P. Job Checkin

10-12. COD. Call when in route. I spoke to Vickie, they need their water heater looked at, their unit just stopped working all of a sudden and they can't get it back up and running.

10-12. COD. Call when in route. I spoke to Vickie, they need their water heater looked at, their unit just stopped working all of a sudden and they can't get it back up and running.

Heather P.

Heather P. Job Checkin

(8-12) Spoke with Anna. *NEW MEMBER* David, please make sure you service BOTH AC & Furnace components. They are now gold members. They already paid $235 for this membership. Please remember they get 10% off any repairs, filters, or refrigerant due to being a member of the service agreement plan!


Heather P.

Heather P. Job Checkin

(10-12) COD. Please call Alexis, homeowner, when you're about 15 minutes out so she can call her tenants to let them know (909) 733-9843! Per Jake (he checked this out from an afterhours call on the weekend), Hot side of the shower valves is clogged with scale; They want it flushed out and rebuilt with new cartridges. Please call Jake for any more information! Please call Alexis and get approval on pricing BEFORE performing the work!


Heather P.

Heather P. Job Checkin

3-5. Time requested. Customer requested to bring extension ladder. I spoke to Lee, they need their ac to be serviced for the summer, and the filters changed out as well.


Heather P.

Heather P. Job Checkin

(8-10) Moved to Monday 5/12/25 per Amen


Heather P.

Heather P. Job Checkin

8-12. I spoke to Anne, they need this units ac unit to be serviced.


Heather P.

Heather P. Job Checkin

(8-12) Net 30. Moved to Fernando for Monday 5/12/25


Jesse@klausandsons.com

Jesse@klausandsons.com Job Checkin

(9-10) Per Jesse, schedule for SAT 5/10/25 for arrival between 9am-10am, ALREADY CONFIRMED WITH ROBERT! :)


Heather P.

Heather P. Job Checkin

no ac call eli 17144956758