Your Comfort Is Just A Call Away

Dover Heating & Cooling Experts

Don't Let "Small" Problems Turn
Into Big Ones. The One Hour Guys Can Help.

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Special Offers Backed by Our
100% Satisfaction Guarantee

$59 Off Any AC Repair One Hour Heating & Air Conditioning® of Dover Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply. Expires May 31, 2021
A C Replacement $300 Off New Air Conditioner One Hour Heating & Air Conditioning® of Dover Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Management reserves the right to modify offers at any given time. Some restrictions may apply. Expires May 15, 2021

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No Matter What You Need, Our Pros Are Ready to Help!

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Dover AC & Heating Company

Heating & Cooling Experts in Dover, DE

The Dover heating and AC experts at One Hour Heating & Air Conditioning® of Dover provide homes and business with reliable repairs and installations combined with world-class customer experiences. As a full-service HVAC company, we provide repairs, installations, and maintenance for air conditioners of all types, heaters, furnaces, and boilers. Whatever your heating and cooling needs, we have qualified experts to make your home comfortable again. Our licensed and insured technicians clean up after themselves while offering results that meet the highest industry standards.

Additionally, our technicians are background checked and drug-screened for your peace of mind. Each technician is highly trained and equipped with a fully-stocked work vehicle, allowing us to handle most repairs on our initial visit. Call (302) 307-6649 to schedule an appointment with our team in Dover, New Castle, Bear, Smyrna and the surrounding areas. Same-day appointments available.

We are proud to be backed and trusted by Google as a part of their Local Service Ads program.

Learn About our Aeorseal Duct Sealing!

Always on Time or You Don’t Pay a Dime®

What makes our service truly world-class is our exceptionally high standards. That’s why our HVAC service calls are backed by our On Time Guarantee and our UWIN Guarantee. Our On Time Guarantee promises that we’ll be on time for your one-hour appointment window, or your service is free. Our UWIN Guarantee backs all our parts, labor, and craftsmanship for two years, ensuring that your repairs and installation are built to last. Our courteous and friendly technicians receiving ongoing training at One Hour, making them some of the best-equipped technicians in the industry. Combined, these commitments are designed to do one thing: give our customers an easy, stress-free, and convenient heating and cooling service in Dover, Bear and the surrounding communities.

Always On Time... Or You Don't
Pay A Dime

‘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.
We Love What We Do
Our trained Comfort Specialists are friendly,
knowledgeable, and genuinely love helping people.

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We Have A Reputation For Being Punctual, Friendly, and Knowledgeable

“Hai is a very professional Tech. I’m very happy with the job he did on my AC unit. I recommend Hai and his company to everyone.”
“My thermostat stopped working all of a sudden. They fit me into their busy schedule that same day. The guy they sent out was very friendly and was great at his job. I could tell he knew a lot about ...”
- Mike O.
“Fast, professional service; very knowledgeable, screened technicians... no dirtbags will come to your home. They don't try to upsell you anything. They take great care of your home and won't leave a ...”
- Jill K.
“One Hour Heating and Air Conditioning has always been reliable and helpful in taking care of our need and understanding our finances. All of their service personnel have been efficient and friendly.”
- David P.
“I have been calling One Hour Heating & Air Conditioning whenever I have a problem with my heater or air conditioner. Their service is excellent!!! They schedule same day and next day service and are ...”
- Joyce P.
“Professional, friendly, and thorough!!! Simply the best and will continue to use the service for maintenance. Feeling warm and toasty now that my heater is doing well!!! :)”
- Cory F.