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Derby, CT

HVAC Service you can count on

4.6

(52 reviews)

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Heating & Air Conditioning

Services By One Hour

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HVAC Service Near Me 
—Available 24 Hours

One Hour Heating & Air Conditioning understands that heating and air conditioning issues create uncomfortable living situations — especially when temperatures outside are extreme. Luckily, our customer specialists are on standby 24/7 to fix your urgent issues. Whether you need HVAC installation, repair, or maintenance, our HVAC service experts are ready to help.

Emergency HVAC Services

We offer 24-hour emergency HVAC services – even on weekends and holidays – to ensure you have professional support when you need it most. Arriving with service trucks stocked full of specialty parts and tools, we have the equipment needed to fix many HVAC problems on the spot. In the case that additional parts are needed, rest assured – we will do everything in our power to handle your HVAC emergency quickly and efficiently.

Air Conditioning

Whether you need an emergency replacement, regular maintenance, or installation services, our qualified technicians have the experience and technological resources to get any HVAC job done correctly. We utilize the latest tools, products, and techniques to stay up to date with cutting-edge changes in the industry.

AC Repair

At One Hour Heating & Air Conditioning, our HVAC technicians service all major AC brands and models. Our AC repair team can fix:

  • Poorly insulated ductwork
  • Power supply breakdowns
  • Defective fans or thermostats
  • Refrigerant leaks
  • Frozen condenser coils
  • Blocked condensation drainage
  • AC short-cycling (turning on and off too quickly)

After inspection, we will provide a detailed estimate.

AC Installation & Replacement

There are many telltale signs that an HVAC unit might need to be replaced. If an HVAC unit is over 10-years old, smells terrible, blows warm air, or produces subpar results as energy bills keep rising, give us a call!

AC Maintenance

For optimal performance, AC units require many parts to work seamlessly together. A single problem can cause a ripple effect of issues. This is why spotting minor malfunctions is critical. With regular maintenance visits, we can ensure your HVAC system is operating smoothly and efficiently. Consider joining our Club Membership for additional customer benefits.

 

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Our Happy Customers

Reviews of Shelton

4.6

(52 reviews)

Grace DeSanti

03-21-2025

“Called for emergency service and they sent out a technician right away. Provided kind, fast, and professional service to my central air unit.”

Kathleen Pekera

07-05-2024

“Excellent!!! On a holiday weekend when it’s 85 outside and my 2nd floor AC was not working … they called me back promptly and within the hour Gary was fixing the problem! 5 star service! Highly recommend them.”

Frank Strassburger

06-21-2024

“Thanks for your prompt service. Much appreciated Ralph”

Robert R

05-24-2024

“Could not be any happier, two homes fixed and always answer in emergencies. Love them.”

Ray Lansing

03-07-2024

“Outstanding job. I was looking to replace my old A/C with a heat pump which could help with heating too. Ralph and his team at One Hour were able to do what I was hoping for, add the heat pump for A/C and heat, plus keep my working furnace when it gets really cold. Knowledgeable, professional and courteous all around. Highly recommend!”

parker quinn

04-02-2023

“We love Norman!! He was incredibly kind, had a great attitude and walked us through what was wrong with our furnace!”

John Girard

09-27-2022

“I was very pleased with the service I received from a technician named Norman. We both had a lot to talk about and learned from each other. I purchased a wise thermostat and wanted assistance to get it installed. He did a great job on that in addition to providing a thorough test of my furnace.”

Dave Grant

09-23-2022

“Have been using this company for a few years now. From Joanne on the phone to all the rest of the guys and Ralph the owner, nothing but professional service. Thanks, Dave Grant Sr”

Amy Decker

09-14-2022

“My husband and I had a terrific experience with this HVAC company. Everyone on the staff was kind and courteous and respectful - from the "director of first impressions" (gal on the phone when you call) to all the different techs that came out. They all wore shoe covers and cleaned up completely when they were done. Our job went on for a long time but only due to supply-chain problems and even then they kept us posted the whole time which was very appreciated. We had several contractors come out to give us estimates on this installation but the owner of this company is the only person that told us about government assistance loans we could apply for. So a big thank you from Amy & Bill to you all! We would definitely recommend this local company. *Edit* My first review was for the install and service we received. Now I want to tell people about the product we bought - mini split heat pumps. Wow! If you are considering getting these - do it! Now that we are on our second summer with these, I don't know why we didn't do it sooner! The cooling and dehumidifying is supreme. And getting rid of (selling!) all our window units was a dream. No more lugging them into the attic and then bringing them down again. Highly recommend the company and the product.”

Bill Bridges

08-01-2022

“I have a been a loyal customer and their response time to my needs have been phenomenal. From the front desk to the technicians they provide complete transparency into all the work that needed to be done. Not once did I feel like I was being overcharged and I was always educated on what was needed and how to maintain the units going forward. I regret not being on their customer program because it would have saved me even more money.”