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 built relationships with several lenders 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.

HVAC means Heating, Ventilation, and Air Conditioning. HVAC systems refer to air conditioners, furnaces, and any unit that cools indoor spaces during the summer and warm them in the winter. In general, an HVAC system takes in air, heats or cools that air, and blows it into a room or any indoor space. While many homes have separate air conditioning and heating units, others have a heat pump that cools and heats the house. Not only do HVAC systems maintain desired temperatures, but they also improve indoor air quality and regulate humidity levels. But most importantly, these units provide comfort all year round.

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.

Bringing Comfort Home

With Expert AC Services

One Hour Heating & Air Conditioning® of Mesquite and Forney

4.84

(155727 reviews)

Heating & Air Conditioning

Services By One Hour

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Two One Hour Heating & Air Conditioning technicians standing confidently in front of a service van.

Heating, AC & Furnace Repairs in Mesquite, TX

100% Satisfaction Guaranteed

When homeowners want a reliable heating or air conditioning system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the premier HVAC service provider in the United States for a simple reason: we actually care about your comfort.

At One Hour, we respect you, we respect your time, and, most importantly, we respect the trust that you put in us to keep your home comfortable. It’s why we back all of our work with a 100% customer satisfaction guarantee for two years, and it’s why we’re always on time—guaranteed.

We Have a Reputation

For Being Punctual, Friendly and Knowledgable

4.84

(155727 reviews)

Shannon Hu

in the last week

“One hour AC & heating has not disappointed. Jonah has serviced our units since we moved in almost 3 years ago. He’s friendly, personable & courteous. He explains what he will be doing whenever he comes & asks us if we’ve had any problems.”

Donna Warner

in the last week

“Ryan and One Hour heating and air conditioning Ryan did a fantastic job worked his butt off and we now have a wonderful brand new AC unit in our home. I would recommend them to anyone in everyone in need of a new air conditioner.”

Harry Strange

in the last week

“Cody & Spencer were great and their personalities were a delight. Very knowledgeable and great customer service. I would love to have either one of the guy's be the guy to do my maintenance and warranty work because of the professionalism and knowledge. Thank you so much for the expedited install guys (Cody & Spencer)!”

todd hoffarth

in the last week

“I needed a spring checkup, so I called a pro. Louis was awesome! It was raining when he got here, so he put on his shoe covers to keep my floors clean, made friends with my doggies and got to work. He took my unit apart and cleaned it all up, then went through it and made sure everything was working properly. I felt like my ac wasn’t cooling as well as it should, so he checked everything out. In no time at all he had my house chilly like it’s supposed to be. All that for a very reasonable price. Louis is super friendly and explained everything he was doing and answered every question I had. I highly recommend this company.”

Elizabeth Kissam

in the last week

“Service tech Beau was here today to do a deep cleaning on my split unit. He was on time, very professional, and spent quality time taking care of the cleaning. He also gave me helpful recommendations. The office staff is also very nice to deal with. I was shocked, pleasantly, at the cost. It was more than $1200.00 less than I was quoted by another company! I will be a life-long customer for sure!!”

Adrián Gómez-Junco

in the last week

“After a terrible experience with another company that misdiagnosed my one-year-old Minisplit compressor as having 'toasted' electronic boards (with a $2,000 parts + labor quote and a refusal to install my warranty-covered replacements), I was incredibly frustrated. They even suggested I replace the entire system for $12,000! Finding a company willing to work on a Minisplit and install my own parts proved challenging. After 5 or 6 rejections, "One Hour Heating & Air Conditioning of Ellis County" was a breath of fresh air. They immediately agreed to help and sent a team the next day. The technicians quickly identified and fixed a problem with the electric line feeding the unit. Once power was restored, my supposedly broken compressor worked perfectly! I also had a great experience with Kortling and Brian. Highly recommend.”

Jay Douglass

in the last week

“Brian is one of the best mechanics I've ever worked with. He's pleasant. He has a lot of knowledge and he'd let you know what's going on. I would recommend him to anybody around here.”

Kent Palmer

in the last week

“Installed a GE Ultium, Level II power charger. Very professional, prompt, courteous. Provided a competitive estimate. Both estimator and installer were very communicative to ensure the job would be performed as expected.”

Krissy Marie

in the last week

“DeVaughn was very professional, informative and thorough while inspecting my unit. He suggested that I get a part to prevent any further rust so I went ahead and purchased that. He cleaned my unit inside and out; free of debris and pollen. I been dealing with them for a few years now and they exceed my expectations every time. After about 5 years my unit is still holding up pretty well.”

Destiny Clawson

in the last week

“Decided to give One hour a try due to the time of day and their promise of service within one hour. They delivered! Michael was very polite and professional. We will call them in the future for our HVAC needs.”

HVAC Services You Can Count On

Our customers love what we do because we treat them like the neighbors they are to us. While we carry the One Hour name, we're an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForwardPricing® guides for your benefit, and will pay you back for being even one minute late to an appointment.

Here For You

When You Need Us Most!

Yellow One Hour Heating & Air Conditioning service van with company branding and slogan.

'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.