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TRUSTED BY SUNNYVALE, CA HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon25
    Verified water softener services reviews

Top-Rated Water softener pros in Sunnyvale - Updated Nov 2026

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 Sunnyvale, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"I met Gert when we hired him to replace our Tankless water heater. I was so impressed with is knowledge and concern to make sure the installation was neat and clean. The piping is literally a work of art. We met with Gert and Sergio to discuss the next phase. They removed all the galvanized pipe and installed 3/4" copper with a true hot water recirculating line for Tankless recirculating pump. Before they started work, they came in and placed protective covers over the hardwood floors. Sergio and his team replaced all the cast iron drains with ABS. They even opened walls where needed to get to the old galvanized drains to the sinks. They pulled up toilets and replaced the old flanges with new ones. All that's left is the sewer line from the house to the street. We will be calling Gert and Sergio when reach that point. Gert, Sergio and the whole crew have something you do not see that often anymore. That's integrity and concern for their customer. Also very conscientious of keeping our home clean."
Give us a call today at 408-580-0031
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+5

Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for GOLDS PLUMBING INC
GOLDS PLUMBING INC
5.0(
6
)
Water Treatment & Purification System - Install or Replace

Serving Sunnyvale, 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%
Recommended by83%of homeowners
Avatar for Quality Pump Service
Quality Pump Service
4.5(
50
)
Well Pump - Repair or Service

Serving Sunnyvale, 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
11 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Cisneros & Sons Plumbing Inc
Cisneros & Sons Plumbing Inc
5.0(
8
)
Water Treatment & Purification System - Install or Replace

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"I had my water heater installed by Octavio, and everything was absolutely perfect! He was professional, on time, and made sure the job was done right. The whole process was smooth and stress-free, and the quality was great. I’m extremely happy with the results and would definitely recommend him to anyone who needs plumbing work done."
Response time4 hrs
Response rate100%
6 neighbors recently requested a quote
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Water Softeners FAQs, answered by experts

Choosing involves understanding water hardness levels, household size, desired features, and consulting professionals experienced in suitable system types.

If your ‘do isn’t doing what you want it to do despite using good hair care products, hard water might be to blame. Since hard water can’t rinse soap off as well as soft water can, your hair might grow limp because of the shampoo and conditioner residue that’s left behind. If you color your hair, you might see it fade more quickly or even turn a different shade as the dye reacts with the minerals in the water. You might also experience an itchy scalp, thanks to the dryness that comes from bathing in the hard water.

To get utilities set up on a property, you first have to contact the local department of planning to determine whether your property is able to connect to public utilities. From there, you can work with a structural engineer and/or a building contractor to design the layout of utility lines on the property. The pros will need this information as they begin securing building permits before they can start adding lines.

If your property isn’t able to connect to public utilities, you’ll need to consider working with pros to develop a comfortable off-grid home that will meet your needs.

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.

A tankless water heater should be at least 10 feet away from a water softener, although the pros you hire for water softener installation can help you determine the correct distance. These two units need to have some distance between them to prevent hot water from the tankless water heater from flowing backward into the water softener when it runs a regeneration cycle.

The Sunnyvale, CA homeowners’ guide to water softener services

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