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Derby 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.

  • “The serviceman was excellent and he did what he had to do. There were other problems, but we were able to fix it. They also came on time.”

  • “Had oil burner installed, just before weather changed for the worse. Notwithstanding the smooth installation process, Ralph was very helpful in guidance with a multitude of financing options ...”

  • “We had an excellent experience with them. We just had natural gas installed (replacing propane). They converted the furnace and added a line for a new gas range. There was a lot to coordinate between ...”

    - Eliana F.
  • “Awesome customer service; great total experience. Called other companies and they said maybe next day or some day next week. We had no heat/hot water and they came in one hour. Jim, the tech, was ...”

    - Jeanne F.
  • “The utmost professional service for my furnace. We had water damage and they were extremely helpful, as well as, completed the replacement in a timely manner. They go far and beyond. Their work was ...”

    - Kathy P.

Shelton AC & Heating Company

Full HVAC Service in Shelton & Beyond

For years, One Hour Heating & Air Conditioning® of Shelton has been the top provider of heating, ventilation, and air conditioning (HVAC) systems for Shelton and surrounding areas. We have developed a strong relationship with our clients because of our expert knowledge, our excellent customer service, and our robust service guarantees.

We care about your comfort; that’s why we back up our work with a 100% satisfaction guarantee. Our technicians are highly skilled, knowledgeable, and trained to handle any HVAC issue, no matter how big or small. When you contact our team, you can rest assured that we will get the job done right the first time.

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100% Satisfaction Guaranteed

Air Conditioning & Heating Repair in Shelton, CT

Whether you need help with HVAC repairs, installations, or maintenance, our team is ready to help you. We respect and value your time, so we guarantee on-time arrivals to scheduled appointments: “Always On Time...Or You Don’t Pay a Dime!”® Our technicians also clean up after themselves once they’ve completed a project. Our goal is to make calling our Shelton HVAC technicians as easy as possible. If you need your heating or cooling system to be repaired as soon as possible, reach out to us today for our emergency services. We are available to assist you around the clock!

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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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