
Get matched with top water softener pros in O Fallon, MO
There are 8 highly-rated local water softener pros.
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Verified Reviews for Water Softener Service pros in O Fallon, MO
*The Angi rating for Water Softener Service companies in O Fallon, MO 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, MO 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 October 07, 2025
Find Water softener pros in O Fallon

Ambassador Plumbing L.L.C
Ambassador Plumbing L.L.C
Master Plumber with over 19 years experience for ALL Plumbing Needs! We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule an estimate today! Install, repair, and maintain pipes, valves, fittings, drainage systems, and fixtures on commercial and residential structures. Collaborate with general contractors, electricians, and other construction professionals. Follow building plans and blueprints. Respond to, diagnose, and resolve plumbing emergencies. IF WATER RUNS TO IT OR THROUGH IT, WE DO IT!!!
"Great job. Excellent service."
Lance H on September 2024
Master Plumber with over 19 years experience for ALL Plumbing Needs! We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule an estimate today! Install, repair, and maintain pipes, valves, fittings, drainage systems, and fixtures on commercial and residential structures. Collaborate with general contractors, electricians, and other construction professionals. Follow building plans and blueprints. Respond to, diagnose, and resolve plumbing emergencies. IF WATER RUNS TO IT OR THROUGH IT, WE DO IT!!!
"Great job. Excellent service."
Lance H on September 2024

Liberty Heating & Cooling
Liberty Heating & Cooling
We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.
"Excellent. He was very kind and informative. Went way above and beyond"
Michael H on September 2025
We pride our business on excellent workmanship done by our top notch employees who are the best in the industry. Our prices are hard to beat especially for the quality you will receive every time you choose us. We also specialize in having excellent customer service and do not believe in being pushy at all with our customers. Our reviews will testify to these statements about our business ethics. Our technicians have been specially trained to handle the sophisticated high-efficiency systems currently on the market today. These include all air conditioners, heat pump, furnaces, boilers and tankless water heaters.
"Excellent. He was very kind and informative. Went way above and beyond"
Michael H on September 2025

Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Dunn Plumbing, Heating and Air Conditioning / Dunn One Hour Heating and Air Conditioning
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025
Now offering one hour service for heating and air conditioning service. We are factory authorized to service all major brands and we offer all the top products in the industry. Year to year we win numerous awards for customer service and technical skill. Our team is dedicated to providing you with the attention to detail and customer service that can create a whole new level of comfort and energy savings. Led by owner Brett Nejmanowski, our company provides expert sales, service and installation. We have a team of technicians that are fully qualified to help you select the comfort system that best fits your home and your budget. We serve the greater St Louis area, and are a no-nonsense, everything-on-the -table kind of heating and cooling company. Our written 100% satisfaction guarantee is behind all the work we do – if you’re not happy with our heating and cooling services for any reason, we’ll make it right or give your money back, no questions asked! No matter if it is a furnace or AC repair, furnace and AC installation, heat pump installation, or anything heating and air conditioning-related, you will have our guarantee. Along with the services we provide, we’re also passionate about our duty to protect the environment and our social responsibility to the community. In our daily practices, we utilize earth-friendly products and methods to ensure clean outdoor and safe indoor environments for the people we serve. We regularly give back to the community through volunteer work and financial donations. Among the charitable organizations we support are Safe Kids USA, National Multiple Sclerosis Society, Autism Speaks and the Sheriffs’ Association. Financing options available. Numerous rebate programs available. Government subsidized programs available to qualifying homes. Additional phone number (618) 717-0707 Also servicing clients from both 14248 F Manchester Rd, Ste. 190, Manchester MO, 63011 & 110 West Main St., Ste. A, Belleville IL, 62220!
"Very professional and thorough"
Carla F on May 2025

Roto-Rooter Plumbing & Water Cleanup
Roto-Rooter Plumbing & Water Cleanup
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"Very professional service, and great customer service."
Janet H on April 2025
When you need an emergency plumber or a drain cleaner, call Roto-Rooter Plumbing & Water Cleanup. Your fast & reliable plumber can fix any plumbing problem, including sump pumps, toilet repair, faucet repair, faucet replacement, garbage disposals, water heaters, bathtubs, showers, and outside faucets. Roto-Rooter is best known for drain cleaning & sewer cleaning. We fix drain clogs, clogged toilets or sinks, blockage of main sewer lines, slow draining shower and bathtub drains, sewer lines and leaking or burst pipes. We also specialize in water damage restoration & water cleanup services. We can fix and clean up your flooded basement too. Roto-Rooter is a 24-hour plumber near you and provides emergency service.
"Very professional service, and great customer service."
Janet H on April 2025

Tri-State Water, Power & Air
Tri-State Water, Power & Air
In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!
"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"
Jerry B on December 2024
In business since 1992, Tri-State prides itself on providing top notch services and products to it's many customers. Our Service Plumbing team is ready and willing to tackle your project - be the need immediate or not. Simply reach out and we will dispatch a technician immediately to provide a quote and solve your problem!
"Only rating 1 because it doesn't go lower. Had a new unit installed end of Sept 24. First time power goes out on 11/5, no electricity. When tri state sells you a product, they pitch their amazing customer service with all these guarnatees of knowing when your unit is out before you know and having someone there within 24 hours etc. Well, the first call we make we are told it will be the end of Nov to get someone out to look at it. 3 weeks. Nobody shows up. Then we get a call that says "your appointment on Dec 12 has been canceled and the earliest we can get to you is Jan 16th. This is 2.5 months wait to get service to fix a nearly $20k unit, that is upcharged because of the excellent service. You can't get anyone to answer your call. you wait on hold for 20 minutes, then have to leave a voicemail in which you will not get called back. Based on my experience, find someone else and pay less. Even if the service is bad, which it can't be worse than this, you save money! @kohler"
Jerry B on December 2024

Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's Plumbing, Heating/Cooling & Energy Experts
Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400
"Did good work, fixed our loose plumbing quickly"
Griffin M on July 2025
Anton's has been in business for 43 years and maintains an A+ rating with the BBB. We have the highest Google rating in St. Louis. We offer manufacture rebates, and 0% financing for up to 60 months! We currently employ 72 team members who receive customer service training twice per week. Our service technicians have been professionally trained on our 6 step Anton's service system to ensure our customers receive the same GREAT service at a GREAT price each and every visit!! We provide upfront pricing and don't complete any repairs with out approval. We are the only company in St. Louis to offer lifetime warranty on repairs for our UP plan members!!!! Senior Discount- $10 off a service or $100 off complete new system Emergency Service phone number- 314-499-8400
"Did good work, fixed our loose plumbing quickly"
Griffin M on July 2025
the notorious F.I.X
the notorious F.I.X
We specialize in all around home repair, hvac and custom sheet metal fabrication, maintenance, and improvements. The safety and investment of one's home is our top priority.
We specialize in all around home repair, hvac and custom sheet metal fabrication, maintenance, and improvements. The safety and investment of one's home is our top priority.
M&M Plumbing
M&M Plumbing
M&M Plumbing has provided quality plumbing services in the St Charles area for nearly 20 yrs. Licensed and bonded since 2004. We specialize in: Water Heater replacement Gas Line installation and repair Kitchen & Bathroom plumbing installation and repairs Sewer Lateral replacement
M&M Plumbing has provided quality plumbing services in the St Charles area for nearly 20 yrs. Licensed and bonded since 2004. We specialize in: Water Heater replacement Gas Line installation and repair Kitchen & Bathroom plumbing installation and repairs Sewer Lateral replacement
Water Works
Water Works
Looking to give your home a fresh, clean look? Our soft wash service has got you covered! We offer a range of services including house washing, driveway and walkway washing, fence washing, and roof washing. Our house washing service uses a gentle pressure washing technique to remove dirt, grime, and stains without damaging your home's exterior. Your home will look brand new in no time! Our driveway and walkway washing service removes unsightly stains and buildup, making your entryways safer and more attractive. Don't let a dirty fence detract from your home's curb appeal! Our fence washing service will leave your fence looking like new. Finally, our roof washing service removes algae, mold, and other buildup that can damage your roof's integrity. Not only will your roof look great, but it will also last longer. Trust us to give your home the expert care it deserves. Contact us today to schedule your soft wash service!
Looking to give your home a fresh, clean look? Our soft wash service has got you covered! We offer a range of services including house washing, driveway and walkway washing, fence washing, and roof washing. Our house washing service uses a gentle pressure washing technique to remove dirt, grime, and stains without damaging your home's exterior. Your home will look brand new in no time! Our driveway and walkway washing service removes unsightly stains and buildup, making your entryways safer and more attractive. Don't let a dirty fence detract from your home's curb appeal! Our fence washing service will leave your fence looking like new. Finally, our roof washing service removes algae, mold, and other buildup that can damage your roof's integrity. Not only will your roof look great, but it will also last longer. Trust us to give your home the expert care it deserves. Contact us today to schedule your soft wash service!
Wash Co. Exterior Solutions
Wash Co. Exterior Solutions
Wash Co. Exterior Solutions is a first responder owned pressure washing business. We provide all your exterior cleaning needs. We specialize in house washing, roof washing, concrete cleaning/deck cleaning and more. Our eco friendly style of soft washing is a perfect way to get that new look back. We provide our services to Franklin County and surrounding areas.
Wash Co. Exterior Solutions is a first responder owned pressure washing business. We provide all your exterior cleaning needs. We specialize in house washing, roof washing, concrete cleaning/deck cleaning and more. Our eco friendly style of soft washing is a perfect way to get that new look back. We provide our services to Franklin County and surrounding areas.
The O Fallon, MO homeowners’ guide to water softener services
From average costs to expert advice, get all the answers you need to get your job done.
How much a water softener costs depends on your home’s size, and the system’s type and capacity. Our expert guide explores all the price factors.
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.
If you want clean, less-contaminated water, a whole-house filter might be the answer. Learn how much a whole-house water filtration system costs in this guide.
Need help dialing in your water hardness? Use this handy DIY guide on how to set a water softener to save money and get the best results possible.
One big cold chill can freeze up a water softener and your plumbing. Learn how to winterize a water softener to avoid costly water damage.
Making sure you have clean drinking water comes down to proper filtration. Use this guide on how to filter water at home to keep your family safe.
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