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TRUSTED BY FAIRFAX, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon212
    Verified affordable plumbing services reviews

Top-Rated Affordable plumbers in Fairfax - Updated Nov 2026

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 Fairfax, 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 Marin Plumbing, Brian S. Cooke Enterprises
Marin Plumbing, Brian S. Cooke Enterprises
4.4(
24
)
Drain Clog or Blockage - ClearDrain Clog or Blockage - Clear - For BusinessDrain Line Breakage - Camera Locate+14 more

Serving Fairfax, CA and surrounding areas

Approved

In business since 1991

Emergency services offered

Warranties offered

"I would echo most of what I have read in the reviews about Brian. He is prompt, courteous, and professional. Though he is a bit on the expensive side, I believe he is well worth it. An honest, experienced plumber is like money in the bank as far as I'm concerned. Because, while I could have found someone less expensive, experience has shown me that when it comes to plumbers, you definitely get what you pay for. And Brian is worth every penny."
the work force
Recommended by85%of homeowners
Avatar for GoFlow Plumbing
GoFlow Plumbing
5.0(
7
)
Faucets, Fixtures and Pipes - Repair or ReplaceWater Heater - Install or ReplacePlumbing for a Remodel or Addition - Install+8 more

Serving Fairfax, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Your plumbing problem becomes our problem to solve.\n\nThat’s not just a tagline, it’s how we operate. When you call GOFLOW, you’re getting a team that knows this area, knows plumbing, and genuinely cares about doing the job right.\n\nWe’re not a franchise. We’re not a call center routing you to whoever’s available. We’re a local company built by plumbers who got tired of watching customers get treated like transactions instead of people.

Kept existing config
Min visual impact
Moen Flo Install
Backflow Preventer
Backflow Preventer

+2

32 neighbors recently requested a quote
Avatar for Peter Levi Plumbing, Inc.
Peter Levi Plumbing, Inc.
4.9(
9
)
Drain Clog or Blockage - ClearGas PipingTankless Water Heater - Repair+8 more

Serving Fairfax, CA and surrounding areas

Approved (Corporate)

In business since 2000

Free estimates

Credit card accepted

"Elsy ( I believe she was the plumber from your company via Angi) arrived as scheduled, on Saturday, 09/28/2024. She attempted to repair my garbage disposal unit but was unable to do so as the unit's wiring was worn out. I advised the unit is 40 yrs old. She recommended to purchase a new one. We made a trip together to the local Home Depot store and I purchased the same brand s she recommended. She installed it in record time (within the 2.5 hrs) and completed the job. She also cleaned the work space and carried the old one to my recycling bin. Very satisfied with her work. Also, I want to know if I will receive a billing statement for my records? Thank you for your time & assistance."
My jobs
My jobs
My jobs
My jobs
My jobs

+1

Response time2 days
4 neighbors recently requested a quote
Recommended by60%of homeowners
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 Fairfax, 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

A back pressure valve is a control valve used on production vessels, such as separators, treaters, and free water knockouts. The valve holds pressure until a set point is reached, and then releases upstream pressure to reset. Back pressure valves are not safety mechanisms. Instead, they are regulators designed to keep the fluid, gas, or liquid mixture in a system at a certain pressure level to prevent bursts and other incidents.

Meanwhile, a backflow preventer is a safety mechanism that kicks in when the pressure has already failed and contaminated water flows in the reverse direction. Most backflow preventers consist of two one-way valves, or check valves assembled together. This design only allows water to pass through in one direction but not the other.

Snaking a toilet is similar to clearing sinks and bathtubs, but there are unique circumstances where you’d have to drain, disassemble, and remove the toilet to fix the clog. For stubborn clogs in the toilet trap, a toilet auger—designed with a shorter cable and a protective plastic encasing—can navigate the tight bends and clear the clog without risking damage to the porcelain. 

PEX pipes can freeze. While they are less likely to burst than rigid pipes like copper or galvanized steel, it is still possible. PEX is flexible and can expand as water freezes and contract as it thaws. However, this expansion can cause leaks around the pipe's connections. Furthermore, frequent freezing and thawing cycles can stress and weaken the material over time, increasing the risk of a future burst. Therefore, even though PEX is freeze-resistant, it is not freeze-proof, and standard insulation precautions are still recommended to prevent freezing.

To avoid the high costs of plumbing repairs, watch for potential problems. If you see any signs of a leak, consider hiring a professional plumber. A pro can assess the level of damage and make the appropriate repairs.

Plumbing leaks are always better tackled immediately. You can also fix any minor repairs yourself or ask the plumber if they can use less expensive materials.

Most gas stoves either have a shutoff valve inside the oven drawer compartment or behind the stove wall. Cooktop shutoff valves are usually inside the base cabinet, and wall ovens usually have a shutoff valve in the cabinet below or next to the unit. Construction regulations require installing a shutoff valve within six feet of the appliance. So, if you can’t find the valve on the appliance, look around the connecting gas pipes within the six-foot radius.

The Fairfax, CA homeowners’ guide to affordable plumbing services

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