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Chesterfield Heating & Cooling Experts

Always On Time...

  • ‘Round the Clock Availability

    No matter the hour, you can trust One Hour to be there to help you when you get hit with the unexpected.

  • 100% Satisfaction Guarantee

    We guarantee our materials, labor, and craftsmanship for up to two years from the date of your service.

  • StraightForward Pricing® Guide

    Before we start any work, we discuss your available options so you know exactly what you are getting and how much it will cost. No hidden fees!

  • Always On Time…Or You Don’t Pay A Dime!®

    We understand your time is valuable, so we promise to arrive at your home within the predetermined time window that you select, or your service call is free.

Get the Best Service Around

Our Happy Customers

Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

  • “Will always ask for Jose when we need our furnace and air conditioner ready for the summer and winter. Again thank you, Jose! Great job!”

    - Patricia M.
  • “Mike P was extremely knowledgeable helpful and patient he took his time to check out our system and to see what was wrong and gave us options for repair. Truly appreciate all his help.”

    - Majko Veit | deer park, NY
  • “I have been very impressed with the standard/routine maintenance services as well as the duct cleaning, The technicians were courteous, knowledgeable, thorough, and conscientious. They explained the ...”

    - Nicole Knickmeyer | Clarksville, TN
  • “I had the best experience with One Hour Air Conditioning! Jose was the gentleman who was sent to my home and he provided excellent service. He was very knowledgeable, he fixed my AC problem and was ...”

    - Elena del Moral | Miami, FL
  • “I just want to say Thank you to Sheena James, i didnt actually have any services done, i was just inquiring about yall services, but Sheena was very helpful friend courteous and knowledgeable about ...”

    - Ida Thomas | Missouri City, TX

HVAC Company in West County

High-Quality Repair, Installation & Maintenance

Maintaining a functioning HVAC system is easy when you have an AC and heating company that performs the job correctly the first time and educates you about what was done. At One Hour Heating & Air Conditioning® of West County, we provide an honest price on the spot and ensure you understand how to keep your HVAC running smoothly after we leave. Our dedicated technicians keep you in the loop during the repair, installation, or maintenance process so you know we’ve completed work accurately.

For more than 35 years, One Hour Heating & Air Conditioning® has been proudly serving the nation with superior services. As a renowned AC and heating company, our goal is to be your trusted HVAC service provider. We hope to achieve this through honest pricing, reliable work, high standards, a positive customer experience, and an unrivaled dedication to meeting your needs every time.
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100% Satisfaction Guaranteed

Why Customers Choose One Hour Heating & Air Conditioning® of West County

As a local AC and heating company, our primary focus is on helping you with all of your HVAC needs while offering competitive pricing and outstanding customer service. We aim to make you feel supported each time a technician from our company visits your home. While we carry the name of a nationally recognized brand, we are independently owned and operated, serving the West County community and surrounding areas with local service you can rely on.

One Hour provides the following services to West County customers:

  • Emergency HVAC services
  • AC repair, replacement, installation, and maintenance
  • Heating repair, installation, and maintenance
  • Furnace installation, repair, and maintenance
  • Duct cleaning, repair, and installation
  • Air quality services
  • Thermostat repair and replacement

All of the services listed above are priced honestly, with you in mind. We will never surprise you with hidden or extra fees. This is our StraightForward Pricing® promise, and we stand by it. Our professionally attired technicians show up on time, assess the problem thoroughly, and tell you how much it will cost to repair, replace, or install. We tailor our services to fit your situation because we know that every customer requires something different.

To get started working with an HVAC company that guarantees 100% satisfaction on work, call us 24/7 at (314) 682-4654 or request an appointment online!

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Frequently Asked Questions

  • What does the One Hour mean in your company name?

    The ‘One Hour’ in our company name indicates our guarantee to be at your home in the predetermined window quoted when you set your appointment. If we do not show up within that window, your service call fee is waived.

    1. Express Appointment: This is an appointment that is scheduled during a specified one-hour time slot. You are promised that a technician will arrive at your home within this one-hour time window. You will also receive a call when the technician is en route to your home.

    2. Reserved Appointment: This is an appointment that is scheduled during a specified, two-hour time slot. You are promised that a technician will arrive at your home within this two-hour time window. You will also receive a call when the technician is en route to your home.

    3. Standard Appointment: This is an appointment that is scheduled during a specified four-hour time slot. You are promised that a technician will arrive at your home within this four-hour time window. You will also receive a call when the technician is en route to your home.

    4. Stand-By Appointment: This appointment is for overflow situations. This appointment will not have a specified time. You will receive a call when the technician is en route to your home.

    5. Emergency Appointment: This appointment is for an unspecified time after normal business hours Monday – Saturday and all day on Sundays/Holidays. Calls are dispatched in the same order they are received. You will also receive a call when the technician is en route to your home.

  • Do you service emergencies after-hours?

    Yes, we offer emergency services 24-hours a day, year-round.
  • How much will my service cost?

    The size and complexity of your HVAC issue will determine the cost. Because our trained, licensed HVAC technicians must diagnose the issue before we are able to quote you an accurate cost, we require an appointment to be set to complete a diagnostic on your system. Once the diagnostic is complete, your One Hour(R) technician will walk you through all costs using our Straightforward Pricing(R) Guide so there are never any surprise fees.
  • How often should I service my HVAC system?

    It’s ideal to service your cooling system each spring and your heating system each fall to ensure you find small issues before they become big problems.
  • How often do I need to change my HVAC filter?

    Your filter should be changed every one to three months, depending on conditions in your home and your region’s climate.
  • Do you offer purchase financing?

    We work with several lending partners to ensure our customers are able to restore comfort in their homes. Ask your technician about your financing options.
  • What are the advantages of a smart thermostat?

    Smart thermostats learn a household's patterns and adjust heating and cooling according to when a home is occupied, give homeowners the ability to control the thermostat remotely, and enable homeowners to reduce their energy use, saving you money.
  • What is a SEER Rating?

    The SEER (seasonal energy efficiency ratio) is a measure of the efficiency of your heating and cooling system.The higher the SEER rating, the more efficiently a unit operates. The SEER rating of any given unit can range anywhere from 13 to 21.

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