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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 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 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

"Wow! After a few "no-show" plumbers, I found a gem amidst the storm - literally! My sewer ejection pump stopped working and Ramiro was my hero! We were able to coordinate over the phone with me describing my situation and sending a few pictures. Ruben showed up this morning and was probably one of the nicest, kindest, more competent people I have had work on my house ever. He was able to restore my pump to working order and replace the parts needed. Ruben was very communicative and precise in his diagnosis and repair. He left after a few hours with my pump back up and running - the pump was cleaned out and the alarm float replaced. I am so relieved and more importantly, happy to know whom to call if one of my 4 pumps is in need of some TLC at any time. You would be lucky if you needed help with your pumps to have Quality Pump Service be able to help you!"
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

You can decide whether you need a water softener or water filter based on how your bathing or laundry experience is. If you notice issues like limescale buildup, dry skin, or stains on dishes—all telltale signs of hard water—you'd likely benefit from a water softener. However, if your main concern is over chemicals or bacteria in your tap water filter, and not just comfort, a filter is a better option.

A water softener is a worthwhile investment if you live in an area with hard water. While hard water is safe to drink, it contains minerals like calcium and magnesium that can cause significant problems over time. These minerals build up inside pipes, reducing water flow and eventually corroding the plumbing system, which can lead to leaks and a shortened lifespan. Hard water also damages fixtures and appliances, potentially resulting in costly repairs. Additionally, it makes soaps and detergents less effective, meaning you'll use more product to get things clean. By installing a water softener, you can prevent these issues. The initial investment is often recouped through long-term savings, including lower energy bills, reduced appliance and plumbing maintenance, and spending less on soap and cleaning supplies. Other benefits include cleaner linens, dishes, and clothing, as well as softer water that is gentler on your skin and hair. In some areas, a water softener can also increase your home's value, making it a valuable long-term investment.

The average cost to install a water softener, including the system and labor, is approximately $1,500. However, the total price can range widely from $600 to $6,000. For some complete systems, the cost may be between $800 and $2,500. Labor for the installation typically costs between $150 and $1,000.

The final price is influenced by several factors, including:

  • System type, capacity, and complexity

  • Home size and household water demands

  • Water hardness levels

  • Accessibility of the installation site and the extent of plumbing work required

  • Whether new electrical work is needed

  • The professional hired and any local permit costs

A water softener removes minerals from your drinking water and can make your house water softer. These softeners are designed to extend the lifetime of your plumbing system while also making water safer and more palatable for drinking. Hard water, which is water with a heavy amount of suspended particles, can also cause hair damage, skin irritation, and buildup in your pipes.

A good hardness level for drinking water can vary based on personal preferences, but an ideal level is 3.5 to 7 GPG. This means your water isn’t soft or hard. However, some people prefer the “fresh” taste from the minerals in hard water, while others like the smoother, “slippery” texture of soft water.

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.