Water Treatment Services24/7 Emergency ServiceFor emergency water treatment needs, call 636-397-1237 Free Water Test Request ServiceSee more promotions Schedule Your Water Treatment Service Near St Louis and St Charles County Now (636) 397-1237 Schedule NowFaszold Water Treatment Services 24/7 Emergency Water Treatment Service Whole House Water Filtration Systems Drinking Water Filtration Systems Whole House UV Filtration SystemsIs the quality of your water putting your family at risk?Nearly 85% of U.S. public water systems contain hard water and can contain chemical, physical, and biological hazards in between municipal treatments. Even worse, well or groundwater systems are at high risk of containing deadly bacteria if not treated properly. If you have any of these signs of contamination in your water, then we urge you to have your water tested and a professional water treatment system installed. Positive Test for E. Coli or Coliform Bacteria in Water Ongoing Gastrointestinal Pain, Nausea, or Dehydration Unusual or Bad Taste in Drinking Water Foul Odor, Sulfur, or Chlorine in Water Low Water Pressure Cloudy, Foamy Water Dirt and Sediment Coming through Faucets Water Spots, Stains, or Limescale on Cleaned Dishes or FaucetsContact us today for your free estimate and to learn more about the many benefits of our water treatment systems.A Trusted Name in HVACIt’s not just our name – it’s the Faszold promise to provide exceptional customer service and products that ensure your absolute comfort and well-being. A+ BBB Rated Company In Business Over 40 Years Serving St. Louis Top Rated Local HVAC Company on Google Upfront Transparent Pricing & No Pressure Sales Best Products & Service We Stand Behind & Guarantee We are Licensed, Bonded, and Insured Factory Trained Technicians Easy Service Scheduling & Fast Service Turnaround Request Service Now Call (636) 397-1237Faszold PromotionsFaszold is committed to your comfort. Not only do we provide the industry’s best heating and cooling service at incredible prices, but we also help you save even more with our promotional offers. New R.O System Installed for $1,050 USE PROMO CODE: NEWRO1050Promotion code must be received at time of service. Cannot be combined with any other offer. No cash value. Contact Faszold for details. $50.00 Off New Reverse Osmosis (R.O. System) USE PROMO CODE: NEWRO50Promotion code must be received at time of service. Cannot be combined with any other offer. No cash value. Contact Faszold for details. 0% Financing Available on New Water Treatment System Apply NowSee What Our Customers Say About Our ServiceIf I could give them a 10 it would be well deserved. They were here within 4 hours of me calling and my ac running in 1. Very professional and very knowledgeable. Thanks guys you saved us from the Missouri heat and humidity.- Tina Huml, Google Local Guide · Level 6 Read All Customer Reviews Join The Faszold Club Membership (FCM) Program & Save Learn More