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TRUSTED BY CUPERTINO, CA HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified water softener services reviews

Find Water softener pros in Cupertino

Avatar for Fluid Dynamics Plumbing Inc
Fluid Dynamics Plumbing Inc
5.0(
35
)
Water Treatment & Purification System - Install or Replace

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"Had to replace old water heater that leaked and flooded my basement- the Fluid team was amazing and timely - were able to come quickly and stop the leak and basement drain and ultimately replaced my water heater- very professional staff - communicated well and very fair pricing - would call them again for any plumbing issues at my house!"
Water Heater Repair
Wall Water Heater
Trench Install
Trench Install
Trench Install

+13

Response time9 hrs
Response rate98%
11 neighbors recently requested a quote
Avatar for The Tankless Guys Plumbing Corp.
The Tankless Guys Plumbing Corp.
5.0(
13
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cupertino, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"The Tankless Guys not only installed a new water softener system, they also put in a new tankless water heater and a new toilet. They provided excellent service. We had a range of options to choose from and Sergio and his team performed all the work in a timely manner. Sergio also answered any questions we had thoroughly. I highly recommend them!"
Give us a call today at 408-580-0031
Give us a call
give us a call
give us a call
give us a call

+5

Response time7 hrs
Recommended by100%of homeowners
Avatar for GOLDS PLUMBING INC
GOLDS PLUMBING INC
5.0(
6
)
Water Treatment & Purification System - Install or Replace

Serving Cupertino, CA and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Needed to have filtered water going to my refrigerator. He did a great job?installed a filter under the sink, then ran a line through the back of the bottom cupboards around the kitchen to the refrigerator. ??????????"
Response time2 hrs
Response rate96%
2 neighbors recently requested a quote
Avatar for Super Brothers Plumbing Heating & Air
Super Brothers Plumbing Heating & Air
4.9(
9
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cupertino, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2013

Free estimates

Emergency services offered

"Never had such a great experience with any contractor. So grateful to Eugene, Artem, Nick, and Alex not only for the great work they did, but for the care and attention they put in for 3 straight months. My house is built kind of complicatedly and the water heater isn't located in the most accessible place, but they were able to make it work. Not only that, but Eugene found me a new tankless water heater that would also work with my radiant floors - not only saving cost, but space as well. To say they went above and beyond is an understatement. They came back multiple times to make sure work was up to par - never half-assing anything. Really hoping I don't have any reason to need to reach out again soon, but if I do, I know who I'll be calling. Also, special shout out to Jeremy, Karen, and Kathy for their logistical help as well!"
Heat Pump Water heater installation
Rheem Heat Pump Water heater
AO SMITH HEAT PUMP WATER HEATER
sewer line ready to be installed
Sewer Line Project

+27

Response time3 hrs
Response rate99%
36 neighbors recently requested a quote
Avatar for Quality Pump Service
Quality Pump Service
4.5(
50
)
Well Pump - Repair or Service

Serving Cupertino, CA and surrounding areas

Approved

In business since 2010

Emergency services offered

Small jobs welcome

"This business operates with integrity and honesty which is difficult to find these days. I'd highly recommend them for any commercial or residential plumbing and water-well project or issues."
Response time5 hrs
27 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Universal Plumbing & Rooter
Universal Plumbing & Rooter
5.0(
2
)
Water Treatment & Purification System - Install or ReplaceWater Treatment & Purification System - Repair or Service

Serving Cupertino, CA and surrounding areas

Approved

In business since 2009

Credit card accepted

Offers commercial services

Universal Plumbing and Rooter 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 time6 hrs
Recommended by100%of homeowners
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Water Softeners questions, answered by experts

Water softeners have many benefits. The most important one is converting previously hard water—water with too many minerals—to more usable, easier water. When we say easier water, we mean water that’s easier to digest, less harsh on skin and clothes, and builds up less in the water system. Softer water may lead to lower energy costs and will extend the lifespan of all appliances that use water.

Replacing a water softener costs $200 to $6,000, depending on the capacity of the water softener, the type of water softener, and the amount of people living in your home. An ion exchange water softener is the most common type and costs $500 to $3,000. Water distillers, which cost $1,200 to $4,000, and dual-tank models, which cost $1,000 to $5,000, are definitely pricey, but they offer more filtration or capacity, respectively.

While it depends on how complicated the unit and installation is, it takes two to four hours to install a water softener unit, on average. It might take longer if pipes need to be replaced. You should make sure the installation area is clear of any objects that might get in the way before you begin.

If your water softener repair is fairly straightforward, like a simple filter replacement, then you can probably do it yourself with little risk. However, anything beyond a simple fix should be addressed by someone with extensive plumbing expertise to avoid costly water softener problems, like leaks. 

That said, even simple problems can be complicated to diagnose, particularly if your water softener is attached to a whole-house treatment system. So, unless you feel absolutely certain that the problem is an easy fix that you can take on yourself, it's probably best to hire a plumber to diagnose and fix the problem.

Experts recommend that you put two to four bags of potassium chloride in your water softener every month. This amount depends on how much is in the bag (40 pounds is most common) and what your water softener manufacturer recommends. For more specific advice, talk to a water softener pro in your area and read the manual that came with your system.

The Cupertino, CA homeowners’ guide to water softener services

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