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 SEER2 Rating?

The SEER2 (seasonal energy efficiency ratio) is a measure of the efficiency of your heating and cooling system.The higher the SEER2 rating, the more efficiently a unit operates. The SEER2 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 Atlanta

4.9

(1538 reviews)

Heating & Air Conditioning

Services By One Hour

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HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in Atlanta, GA

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

4.9

(1538 reviews)

Aquarius Smith

2 weeks ago

“I can’t say enough great things about Justin at 1 Hour Heating and Cooling! From the moment he arrived, he was professional, knowledgeable, and incredibly courteous. He took the time to explain the issue with my system in a way that was easy to understand and offered clear, honest recommendations without any pressure. Justin worked efficiently and made sure everything was running perfectly before he left. He even gave helpful tips for maintaining the unit moving forward. It’s rare to find someone who combines great technical skill with outstanding customer service—Justin is one of those rare finds! If you’re looking for reliable, top-notch HVAC service, ask for Justin—you won’t be disappointed!”

Chimezie Orji-Unegbu

in the last week

“They responded quickly and were willing to send a technician same day but for my schedule, they came next day and diagnosed the issue quickly and replaced the faulty part. Following our discussion, I realized it's a family run business. The professionalism is admirable and surely they'll be on for a really long time giving good services. I'll always recommend to family and friends”

India s.

a month ago

“This company is great! I called and they were able to get a tech out right away. Justin was friendly, quick, and efficient. The price was a bit more than what I bargained for, but the job was done and my AC function was restored.”

Abbie Richters

3 weeks ago

“I have used One Hour in the past for replacing our furnace and when our AC went out this month, I chose them again due to their consistently outstanding service. Steve, Scotty, and Nick have all been wonderful through all of the repairs we’ve needed. I want to especially thank Nick for going above and beyond to help us get our AC fixed. When a doctor’s appointment went much later than expected, Nick was extremely patient and started on what he could in the meantime which I was extremely grateful for. He was also extremely nice and made sure the job was done right. I will definitely continue business with them in the future.”

Paula Lewis

2 months ago

“I recently had the pleasure of working with both Nick and Justin from One Hour Heating & Air Conditioning of Atlanta, and I couldn’t be more impressed with the service I received. Each technician came on different days and handled their responsibilities with the utmost professionalism and expertise. Nick was incredibly thorough during his inspection, clearly explaining what was going on with my HVAC system and ultimately handling the installation of a new air unit with care, efficiency, and precision. He made a potentially stressful situation feel seamless and manageable. Justin was just as impressive—prompt, courteous, and focused. He quickly diagnosed the issue he was assigned to address and walked me through every step with patience and clarity. His attention to detail and customer-first approach truly stood out. Both technicians represented the company in the best way possible. Their knowledge, professionalism, and genuine dedication to quality service left a lasting impression. I highly recommend One Hour Heating & Air Conditioning of Atlanta—and if you’re lucky enough to get Nick or Justin, you’re in excellent hands!”

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, weâ€™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 StraightForwardÂ® pricing 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.