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  • 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

"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
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+5

Response time7 hrs
Response rate91%
Recommended by100%of homeowners
Avatar for Maverick Water Heaters & Plumbing
Maverick Water Heaters & Plumbing
5.0(
15
)
Water Treatment & Purification System - Install or Replace

Serving Sunnyvale, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Highly recommended. Steve spent time with me on the phone educating me about the pros and cons of tankless and heat pump water heaters. He followed up quickly with a competitive estimate after visiting my home. He is knowledgeable about rebates that can save a lot of the cost. He is a bayren approved contractor which is required if you want to take advantage of their rebates. He installed one water heater this week and everything went very smoothly. Next week I am having him back to put in a heat pump water heater."
Tankless Water Heaters
Tankless Water Heaters
Tankless Water Heaters
Tankless Water Heaters
Tankless Water Heaters

+33

Response time11 hrs
4 neighbors recently requested a quote
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 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 Sunnyvale, 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 rate100%
24 neighbors recently requested a quote
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
13 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%
5 neighbors recently requested a quote
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Water Softeners FAQs, answered by experts

Selecting the right system depends on testing your water to understand the contaminants present and considering your household's water usage and specific needs, such as removing specific contaminants.

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.

It’s unlikely that hard water on its own could cause substantial hair loss or damage, though it’s true that bathing in hard water can cause your scalp to feel itchy or flaky and might dull your hair’s natural shine. Using high-quality shampoo and conditioner or buying a whole-home water softener can decrease these issues.

There are many possibilities for why your shower’s water pressure is low. It might be a simple-to-fix issue like the water valves being partially turned off, a dirty showerhead or hose, leaks in the plumbing, or an old showerhead. However, low water pressure in the shower could also indicate a larger issue with your home’s plumbing system.

The chemicals in a water softener can wear down the anode rod in the heater and shorten its life span. However, for most people, the benefits of the softener outweigh this potential drawback.

Have a plumber inspect the anode rod annually for damage, as replacing the anode rod is far less expensive than replacing the entire water heater.

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.