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Verified Reviews for Water Softener Service pros in Seneca, IL

*The Angi rating for Water Softener Service companies in Seneca, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.

*The HomeAdvisor rating for Water Softener Service companies in Seneca, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Water Softener Service needs.

Last update on November 24, 2025

Find Water softener pros in Seneca

Kingdom Builders

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Kingdom Builders

No reviews yet
10 years of experience

Kingdom Builders is a General Contracting business with over 20 years of construction project management on the commercial and residential side. There is no project to small for us and we pride ourselves in working every job as if we were working for the Lord himself. We are your "One stop shop" to provide all your construction & renovation needs.

Kingdom Builders is a General Contracting business with over 20 years of construction project management on the commercial and residential side. There is no project to small for us and we pride ourselves in working every job as if we were working for the Lord himself. We are your "One stop shop" to provide all your construction & renovation needs.

Affordable Water

4.80(
5
)

Affordable Water

4.80(
5
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a family owned corporation specializing in all types of water treatment and filtration. We have been in the water purification business for over 35 years. We stand behind our products %100. We do residential and commercial equipment. We offer service on all makes and models with free repair estimates. Additional Phone Number: (815) 544-0918

"Called in the afternoon to report a sulfur problem, had Josh come out that evening and he was very prepared, professional, and friendly. Demonstrated great expertise and workmanship. Had a new softener and iron filter installed within an hour of him arriving. No more sulfur smell. I will definitely be hiring Affordable Water in the future."

Nick R on September 2020

We are a family owned corporation specializing in all types of water treatment and filtration. We have been in the water purification business for over 35 years. We stand behind our products %100. We do residential and commercial equipment. We offer service on all makes and models with free repair estimates. Additional Phone Number: (815) 544-0918

"Called in the afternoon to report a sulfur problem, had Josh come out that evening and he was very prepared, professional, and friendly. Demonstrated great expertise and workmanship. Had a new softener and iron filter installed within an hour of him arriving. No more sulfur smell. I will definitely be hiring Affordable Water in the future."

Nick R on September 2020

Service First Mechanical Inc.

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Service First Mechanical Inc.

No reviews yet
17 years of experience

Service First Mechanical values its customers and workers. Having been in the plumbing industry for 30+ years Service First Mechanical has exceptional reputation to uphold. Managed by a reliable group of 20+ licensed plumbers that are on call 24 hours a day. No job is too big or too small.

Service First Mechanical values its customers and workers. Having been in the plumbing industry for 30+ years Service First Mechanical has exceptional reputation to uphold. Managed by a reliable group of 20+ licensed plumbers that are on call 24 hours a day. No job is too big or too small.

R.J. O'Neil, Inc.

1.00(
1
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R.J. O'Neil, Inc.

1.00(
1
)
99 years of experience

R.J. O’Neil, Inc. is a small shop with a lot of know-how. Since 1926, R. J. O’Neil, Inc. has been serving Montgomery, IL and the surrounding area. With a team of talented and skilled workers who can solve any plumbing or HVAC issue, it won’t matter if you own a business or if your problem is at home. From installing a faucet in your home or school to plumbing entire buildings, they have done it all. Always reliable and always on call, R.J. O’Neil, Inc. is the first choice in service and ability. Call us at (630)906-1300, email us at [email protected], or feel free to stop in at 1125 S. Lake Street, Montgomery, IL 60538.

"As a small business owner, I strongly caution others against this HVAC/R company. In over 10 years, they?ve been the least trustworthy and poorest performing contractor I?ve worked with. We experienced repeated service issues, a 25% rate hike without notice, ignored emails, and unreturned quote requests. Worse, we were billed for work that wasn?t done?confirmed twice, including by a third-party inspection with photos. Even when confronted, they deflected and delayed for months. We had to hire another company. They also mis-sized a walk-in freezer due to bad measurements and blamed their supplier. When shown proof it was undersized, they argued with no solution. They later mismeasured again on a replacement bid. Their attitude throughout was defensive, unprofessional, and dismissive. If something goes wrong?and it likely will?they will not stand behind their work. Save yourself the frustration and look elsewhere."

Jonathan D on July 2025

R.J. O’Neil, Inc. is a small shop with a lot of know-how. Since 1926, R. J. O’Neil, Inc. has been serving Montgomery, IL and the surrounding area. With a team of talented and skilled workers who can solve any plumbing or HVAC issue, it won’t matter if you own a business or if your problem is at home. From installing a faucet in your home or school to plumbing entire buildings, they have done it all. Always reliable and always on call, R.J. O’Neil, Inc. is the first choice in service and ability. Call us at (630)906-1300, email us at [email protected], or feel free to stop in at 1125 S. Lake Street, Montgomery, IL 60538.

"As a small business owner, I strongly caution others against this HVAC/R company. In over 10 years, they?ve been the least trustworthy and poorest performing contractor I?ve worked with. We experienced repeated service issues, a 25% rate hike without notice, ignored emails, and unreturned quote requests. Worse, we were billed for work that wasn?t done?confirmed twice, including by a third-party inspection with photos. Even when confronted, they deflected and delayed for months. We had to hire another company. They also mis-sized a walk-in freezer due to bad measurements and blamed their supplier. When shown proof it was undersized, they argued with no solution. They later mismeasured again on a replacement bid. Their attitude throughout was defensive, unprofessional, and dismissive. If something goes wrong?and it likely will?they will not stand behind their work. Save yourself the frustration and look elsewhere."

Jonathan D on July 2025

Russell's Service Plumbing 055-042447

No reviews yet

Russell's Service Plumbing 055-042447

No reviews yet
16 years of experience

Over 20 years in the Plumbing industry, fully licensed, bonded, and insured. Owner performs most work. We have flat rate, or by the hour. We take checks , cash, and credit cards but must chargeextra for doing so.

Over 20 years in the Plumbing industry, fully licensed, bonded, and insured. Owner performs most work. We have flat rate, or by the hour. We take checks , cash, and credit cards but must chargeextra for doing so.

Avatar for Priority Systems Mechanical Services

Priority Systems Mechanical Services

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Priority Systems Mechanical Services

No reviews yet
18 years of experience

We use no subcontractors, $50.00 trip charge, $75.00 diagnostic fee, (may be waived based on required work performed). Credit Cards accepted, a 3% processing fee may be added to invoice total.

We use no subcontractors, $50.00 trip charge, $75.00 diagnostic fee, (may be waived based on required work performed). Credit Cards accepted, a 3% processing fee may be added to invoice total.

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Water Softeners questions, answered by experts

Yes, you can have both a water softener and a water filter. In fact, some manufacturers sell dual water softening and filtration systems that treat hard water and provide clean drinking water. If you’re unsure about what you need or want to discuss your options, reach out to a local water softener installation company.

It’s sometimes possible to install a water softener yourself, but it’s usually better to hire a water softener professional to get the job done. Water softeners involve plumbing and electrical work, which usually require permits and a certified expert to sign off on the work. Not only is it dangerous to work with these utility lines, but it’s also not legal in many areas. Plus, improper installation or system sizing might not fix your hard water issue and could lead to an increased risk of leaks, fires, and other property damage. 

Whether or not your water softener installation requires a permit depends on where you live; some municipalities only let certified plumbers and electricians pull the necessary permits and complete the work, others only require a professional to sign off on the work, and some don’t mandate permits at all. You can contact your local building department to find out, but you can also ask a local water softener installer or plumber to see if a permit is necessary. They will usually pull the permits for you and can help close them out after the work is complete.

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 license requirements for water softener installation depend on your location. Some municipalities require that the installer hold a plumbing license, some require a permit and an inspection, but no license for the installer, and some require a permit and a license for the installer. Regardless of the local laws in your area, it’s always a good idea to hire a licensed plumber or installer. These pros will install your system properly and have the experience to size the system appropriately. Use Angi’s state licensing tool to check your installer’s license status.

The Seneca, IL homeowners’ guide to water softener services

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

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