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TRUSTED BY KNIGHTSEN, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified affordable plumbing services reviews

Top-Rated Affordable plumbers in Knightsen - Updated Nov 2026

Avatar for Water Heaters Masters
Water Heaters Masters
4.9(
112
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

"The free estimate was conducted by phone with Matt.  He answered all of our questions fully, confirming that we did not need to install a larger unit and that all usual pipe and/or valves that needed to be replaced would be included in the quoted price.
The installer, Bobby, showed up within the stated time period, which was only two hours after the initial contact. He got right to work and was efficient, neat, and skilled.  He removed the old unit, took out some unnecessary pipes that were left from an old solar heating unit, and quickly installed the new unit.  He then demonstrated the thermostat operation, which is very different from the previous unit's, tested the operation, and cleaned up the area.
The price was reasonable. The unit has a good warranty (and looks nice ).  The Angie's List discount was applied with no problems.
My husband is a former plumber so he kept an eye on the whole install, and was pleased with the entire experience.
"
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+20

Response time9 hrs
Recommended by94%of homeowners
Avatar for Oak Plumbing Inc
Oak Plumbing Inc
4.6(
103
)
Faucets, Fixtures and Pipes - Repair or ReplaceDrain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For Business+20 more

Serving Knightsen, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Our sewer main busted and Oak Plumbing’s master plumbers Matt & Mike did a great job at digging down over 7ft to replace the broken section and also upgraded my single sewer main clean out which was nearly rusted through to a dual solid ABS clean out. And also I would like to add that Nate also did a great job at identifying our problem! Thanks guys! You’re AWESOME!"
Response time2 days
4 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Mitko BG Plumbing Inc
Mitko BG Plumbing Inc
5.0(
38
)
Water Heater - Install or ReplaceWater Heater - Repair or ServiceTankless Water Heater - Repair+1 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Mitko BH Plumbing responded immediately, and promptly scheduled an appointment. They arrived on time and completed the job quickly. The crew provided exceptional customer service! Extremely happy with the entire experience. Will definitely be contacting them for any other projects which surface in the future. I highly recommend this company!"
Tankless Installation
Tankless repairs
Tankless repairs
Tankless repairs
Tankless repairs

+12

54 neighbors recently requested a quote
Avatar for BCMN
BCMN
4.6(
111
)
Water Heater - Install or ReplaceTankless Water Heater - InstallTankless Water Heater - Install - For Business+5 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

B C M N DBA F and F Plumbing and Drain Cleaning, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

Response time4 hrs
2 neighbors recently requested a quote
Recommended by75%of homeowners
BCMN
4.6(
111
)
Tankless Water Heater - InstallTankless Water Heater - Install - For BusinessTankless Water Heater - Repair+5 more

Serving Knightsen, CA and surrounding areas

Approved

In business since 2015

Free estimates

Credit card accepted

Friends and family Plumbing and Drain Cleaning, (DBA BCMN) is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

Recommended by75%of homeowners
Avatar for Drain Raider Plumbing
Drain Raider Plumbing
5.0(
21
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessSewer Main - Clear+2 more

Serving Knightsen, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Adam was very professional he was very helpful I would use this company again he deserves a million stars he gets the job done right I hope everyone uses this company I want this company for all my Plumming issues hands down I trust this company and Adam’s expertise"
2 neighbors recently requested a quote
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
722
)
Faucets, Fixtures and Pipes - Repair or ReplaceGas PipingDrain Clog or Blockage - Clear+22 more

Serving Knightsen, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"The Albert Nahman Plumbing team was great! From customer service during scheduling to the knowledgeable and skilled plumber they sent out to us. They got our rush job done for us right away with a high level of quality. Highly recommended!"
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
44 neighbors recently requested a quote
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Affordable Plumbers FAQs, answered by experts

Under normal circumstances, you don’t need to turn interior water off if it’s cold outside. But if you plan to be away during cold weather for more than a day, turning off the water can help prevent freezing and burst pipes. If you lose heat, turning off the water can help to keep pipes from freezing as well. You should turn off exterior pipes for sprinklers or outdoor irrigation for the season once temperatures begin to fall in the late fall and early winter.

No, you can’t drain your sump pump into your home’s sewer system. In fact, it’s against the law in many places because dumping extra water into a municipal water system can disrupt or overwhelm the treatment process. And for similar reasons, you shouldn’t discharge a sump pump into your septic system, either.

A bathtub diverter is used when you have a shower-tub combination. The diverter valve allows you to send the water to either your tub faucet or your showerhead. Diverter shower valves cost between $20 and $200. Higher-end brands, such as Moen, might cost more—some models are over $250.

A standard toilet flange should fit snugly into the outflow pipe and sit level with the subfloor. Installing a new one without first removing the old one will make it impossible to form a seal and keep the toilet bowl bolted securely in place. 

However, if you’re dealing with leakage or wobbling because you’ve installed a new type of bathroom tile (making the floor taller), you may be able to avoid fully replacing the flange by opting for a toilet flange extender. Extenders typically come in kits for easy DIY installation, fit over the existing flange, and bring the drain connection higher.

Replacing a shower drain P-trap costs $150 to $250 for parts and labor. Costs increase to $350 or more if your shower drain assembly is difficult to access or requires more work (like replacing pipes and fittings). If you’re a knowledgeable DIYer, a new P-trap costs $10 to $45.

The Knightsen, CA homeowners’ guide to affordable plumbing services

From average costs to expert advice, get all the answers you need to get your job done.