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Wilmington 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.

  • “I would like to thank Brian H. for coming to our rescue today to repair our air conditioning system. If it weren't for him we would have been broiled in this heat. Thanks again, Brian not only for ...”

    - Frank B.
  • “The team at One Hour were great! We had a furnace emergency on a Saturday night, they were at my house on Sunday at 6 a.m. They replaced my furnace and chimney liner in one day. Highly recommend.”

  • “This company is excellent. They are always on time and value their customer's business very much. The technicians are always professional and do a quick, excellent job. Brian is particularly excellent ...”

    - Dan
  • “Great service!!! Hai, the technician that came out took the time to explain everything to me and showed me exactly what he was talking about. I appreciate his honesty and his caring attitude.”

    - Regina
  • “Joe P was awesome. He showed up on time and fully explained what was wrong. This was a Saturday so even more impressive in my book. You guys are my go to heating and A.C. Folks for sure. Never had a ...”

    - James I. | Wilmington, DE

Wilmington AC & Heating Company

Our HVAC Repair Pros in Wilmington Care About Your Comfort

At One Hour Heating & Air Conditioning® of Wilmington, we’ve built our reputation through honest service, reliable work, and good customer service. Every member of our team is fully licensed and receives extensive training until we’re comfortable with their ability to provide the best possible service to every customer. Our techs aren’t just well trained; they’re also well equipped. We stock our trucks with most parts, so our techs can finish most jobs in one visit!

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

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100% Satisfaction Guaranteed

Special Offers

  • One Hour Heating & Air Conditioning® of Wilmington $89 Special Heater Tune Up Offer valid for Gas Hot Forced Air, Heat Pump and Air Conditioner only. One Hour Heating & Air Conditioning® of Wilmington Expires: Nov 30, 2022 Print
  • One Hour Heating & Air Conditioning® of Wilmington $59 Off Off Any Heater Repair One Hour Heating & Air Conditioning® of Wilmington Expires: Dec 31, 2022 Print

Why Customers Love Us

Our goal is to make every person in Wilmington instantly think of us anytime they need HVAC repair services. We don’t just expect our customers to trust us, so we back our promises with some of the most extensive guarantees in the HVAC industry. First, we show you we respect your time by showing up when you expect us to. Our motto says it all: “Always On Time…Or You Don’t Pay A Dime!®"

Additionally, we back every aspect of your service with a 100% satisfaction guarantee. If you don’t love what we do from the moment we knock on the door until the second we’re driving away from your home, we’ll make it right at no extra cost to you. Call our Wilmington repair technicians today to find out more about our other guarantees or which HVAC services we offer.
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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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