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*The Angi rating for Water Softener Service companies in O Fallon, 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 O Fallon, 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 December 13, 2025
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Environmental Testing & Research Laboratories, Inc
Environmental Testing & Research Laboratories, Inc
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018
ETR Laboratories in an analytic laboratory with a broad range of commercial, industrial and individual clients. We provide analytic services using a wide variety of scientific methods including GC/MS, IC/MS, GIR, NMR and SEM equipment. We can do particle analysis, organic and inorganic chemical analysis and micro analysis on biological and other materials. Private water analysis is our specialty. Award winning. Additional DBA - Environmental Testing & Research Laboratories Inc, ETR Labs, ETR Laboratories.
"as advertised"
Nancy C on July 2018

Aqua Systems of Sullivan
Aqua Systems of Sullivan
Equipment Rental and in house financing available. We accept credit cards and often will offer open terms.
"They were great! Very prompt and professional, provided the pros and cons of the different systems, and no pressure to buy or make a decision. Would hire them again in a heartbeat!"
Eric F on February 2019
Equipment Rental and in house financing available. We accept credit cards and often will offer open terms.
"They were great! Very prompt and professional, provided the pros and cons of the different systems, and no pressure to buy or make a decision. Would hire them again in a heartbeat!"
Eric F on February 2019

Embrich Plumbing Co
Embrich Plumbing Co
Customers can expect Embrich Plumbing Co to be professional, courteous, and knowledgeable about plumbing. We value your time and business. We want to keep you as a lifetime customer! We have the expertise to resolve a simple repair to a complex plumbing system problem. We will recommend the correct installation that will satisfy your needs and fit your budget! Upfront pricing on every service or repair!
"We cannot say enough good things about this company and the employees who represent it. We've used them for 12 years and they are very consistent: Always prompt and responsive; always fairly priced; always unfailingly polite; trustworthy. They stand behind their work (we have experience with this! You wouldn't believe what they had to do to stand behind a manufacturer's defect that had nothing to do with them...) If every company was this good think what a great world it would be!"
Virginia R on June 2022
Customers can expect Embrich Plumbing Co to be professional, courteous, and knowledgeable about plumbing. We value your time and business. We want to keep you as a lifetime customer! We have the expertise to resolve a simple repair to a complex plumbing system problem. We will recommend the correct installation that will satisfy your needs and fit your budget! Upfront pricing on every service or repair!
"We cannot say enough good things about this company and the employees who represent it. We've used them for 12 years and they are very consistent: Always prompt and responsive; always fairly priced; always unfailingly polite; trustworthy. They stand behind their work (we have experience with this! You wouldn't believe what they had to do to stand behind a manufacturer's defect that had nothing to do with them...) If every company was this good think what a great world it would be!"
Virginia R on June 2022

MISSOURI FURNACE & AIR CONDITIONING COMPANY
MISSOURI FURNACE & AIR CONDITIONING COMPANY
We are a family owned and operated business since 1972. Missouri Furnace & Air Conditioning Company has maintained an A+ rating with the BBB since 1991. We provide 24 hour emergency service 7 days a week. A live person is always available to take your call. Our finance department handles all of your financing needs throughout the process.
"I have had nothing but perfect experiences with Missouri Furnace and Air Conditioning. They installed my boiler heater furnace in 2006 and my air conditioning unit in 2009, and I have used them ever since for the maintenance and service on both. Their customer service personnel are so nice and they get your service call scheduled very promptly. If there is any sort of emergency they will arrange to get a technician to your house the same day if at all possible. The knowledge and expertise of the service technicians is top of the line, and the technicians are always willing to fully explain the work that they are doing in terms that I can understand. Missouri Furnace & Air Conditioning is a truly exceptional company and I would never trust the care of my heating and cooling systems to anyone else. I give them my highest recommendation!"
Alana R on November 2023
We are a family owned and operated business since 1972. Missouri Furnace & Air Conditioning Company has maintained an A+ rating with the BBB since 1991. We provide 24 hour emergency service 7 days a week. A live person is always available to take your call. Our finance department handles all of your financing needs throughout the process.
"I have had nothing but perfect experiences with Missouri Furnace and Air Conditioning. They installed my boiler heater furnace in 2006 and my air conditioning unit in 2009, and I have used them ever since for the maintenance and service on both. Their customer service personnel are so nice and they get your service call scheduled very promptly. If there is any sort of emergency they will arrange to get a technician to your house the same day if at all possible. The knowledge and expertise of the service technicians is top of the line, and the technicians are always willing to fully explain the work that they are doing in terms that I can understand. Missouri Furnace & Air Conditioning is a truly exceptional company and I would never trust the care of my heating and cooling systems to anyone else. I give them my highest recommendation!"
Alana R on November 2023

Aqua Systems
Aqua Systems
7 Employees. Cost is determined by the job. No travel charge.
"Hours as stated on line are no longer reliable. One Friday afternoon I found them closed at 4:20; they are no longer consistently open in the afternoons and appear to take hour plus "breaks" since we have had to return multiple times to find them "open" again."
Marilyn T on September 2018
7 Employees. Cost is determined by the job. No travel charge.
"Hours as stated on line are no longer reliable. One Friday afternoon I found them closed at 4:20; they are no longer consistently open in the afternoons and appear to take hour plus "breaks" since we have had to return multiple times to find them "open" again."
Marilyn T on September 2018

Culler Plumbing Services
Culler Plumbing Services
At Culler Plumbing, we have been providing quality plumbing services to the Metro-East Illinois area since 2013, but come qualified with over 25 years of experience. All of our plumbers are experienced and professional. Because we are licensed, bonded, and insured (license # 058-176496), you can rest assured that you won’t be footing the bill if something does go wrong. Because every job is different, we charge by the job and not by the hour. Additionally, we offer no obligation estimates, discounts, and a satisfaction guarantee that will leave you feeling confident and comfortable with your plumbing system.
"I will never use another plumbing company!!! I have been using Culler Plumbing for several years now and have had nothing but great results! Dennis has always gone way above and beyond. I have a crawl space and my washer, drier and water heater plus my water softner are all in the same small room with no space to put pans under the water heater or water softner. And I have hardwood floors so whenever the water heater went out my floors would be ruined. He moved the water softner into my bedroom closet with a pan under it and put in a drain. Then was able to put a full size pan under my water heater and a drain which he hooked up to the plumbing under my crawl space. No more ruined floors!! Never had such a caring and expert plumber like him!! Thanks Dennis!!!"
Bonnie B on September 2020
At Culler Plumbing, we have been providing quality plumbing services to the Metro-East Illinois area since 2013, but come qualified with over 25 years of experience. All of our plumbers are experienced and professional. Because we are licensed, bonded, and insured (license # 058-176496), you can rest assured that you won’t be footing the bill if something does go wrong. Because every job is different, we charge by the job and not by the hour. Additionally, we offer no obligation estimates, discounts, and a satisfaction guarantee that will leave you feeling confident and comfortable with your plumbing system.
"I will never use another plumbing company!!! I have been using Culler Plumbing for several years now and have had nothing but great results! Dennis has always gone way above and beyond. I have a crawl space and my washer, drier and water heater plus my water softner are all in the same small room with no space to put pans under the water heater or water softner. And I have hardwood floors so whenever the water heater went out my floors would be ruined. He moved the water softner into my bedroom closet with a pan under it and put in a drain. Then was able to put a full size pan under my water heater and a drain which he hooked up to the plumbing under my crawl space. No more ruined floors!! Never had such a caring and expert plumber like him!! Thanks Dennis!!!"
Bonnie B on September 2020

Trinity Heating, Cooling, & Refrigeration LLC
Trinity Heating, Cooling, & Refrigeration LLC
Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.
"Excellent! The job was done very well"
Scott B on December 2020
Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.
"Excellent! The job was done very well"
Scott B on December 2020

H2ONLY WATER PURIFICATION SYSTEMS
H2ONLY WATER PURIFICATION SYSTEMS
Since 1996 H2O has helped families, businesses, commercial industry, and small communities with their water. We can answer your questions and provide you with cost effective solutions to you water quality and water treatment issues. We sell and service water softeners and water treatment equipment. From activated carbon de-chlorination systems to reverse osmosis systems to water softners to sulfur and/or iron removal systems, H2O has the equipment and experience to provide you with highest quality water available with today's technology.
Since 1996 H2O has helped families, businesses, commercial industry, and small communities with their water. We can answer your questions and provide you with cost effective solutions to you water quality and water treatment issues. We sell and service water softeners and water treatment equipment. From activated carbon de-chlorination systems to reverse osmosis systems to water softners to sulfur and/or iron removal systems, H2O has the equipment and experience to provide you with highest quality water available with today's technology.
Ed Bellm Plumbing Co
Ed Bellm Plumbing Co
Family Owned and Operated since 1947.
Family Owned and Operated since 1947.
The O Fallon, IL homeowners’ guide to water softener services
From average costs to expert advice, get all the answers you need to get your job done.

Water softener repair costs can add up, but they’re almost always worthwhile. Use this guide to see what your project is going to cost before you get started.

On average, a reverse osmosis water filter costs around $2,200, but there are a few variables that impact the total price. Learn about them in this guide.
•Wondering about water treatment system costs? Learn average prices, key cost factors, and ways to save on installation and maintenance for your home.

No one likes that white buildup in the shower and on their cookware. Will a whole-house water filter remove the scale? We'll show you what to expect.

Water softeners tend to wear out after 15 years, but what if you need major repairs sooner? Find out when to invest in a new unit or water softener repair.

How can you tell if you have hard water? Fixing a hard water problem will not only preserve the life of your favorite fabrics, glassware, and appliances, it’ll protect your skin from absorbing harmful minerals. Learn the telltale signs of hard water.
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- 🌱 "Mow a small front yard"
- 🛠 "Fix a leaking pipe under the sink"
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