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 Nashville

4.8

(1473 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.

HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in Nashville, TN

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

4.8

(1473 reviews)

Dawn Dudek

04-02-2025

“Amber was very professional and personable, and took care of the problem with in a reasonable amount of time”

Tawana Hardiman

03-28-2025

“Austin was on time and did a fantastic job! He was courteous and well mannered. Very positive experience!”

Joe

03-28-2025

“Friendly, thorough and respectful. Great job!”

Davis Reggie

03-27-2025

“We're very satisfied !”

Richard Mawell

03-27-2025

“He did a great job. Very polite and telling what he was going to do and listening to what I said. Very good.”

Ramachandran Natarajan

03-22-2025

“Jayce Johnson did a very good job. He was thorough and his behavior professional.”

Coral Calizd

03-21-2025

“Wilson was on time. Great service. Thank u.”

J Kaufman

03-19-2025

“Very thorough and respectful”

Fran Soper

03-15-2025

“Amber did a great job. I say that because she had to clean up all the mistakes that were caused by the installers of my new HVAC last May. This is the second time someone has corrected the mistakes. All that being said, I will say at this time I am so upset and have been for years with Petrie One Hour Heating And Cooling. They are high pressuring in sales. Brendan who sold me my unit was such a high pressuring man and then the two young men that came out to put it in were too young. They did not have the experience and then it was a rainy day, which I asked they not install on that day but again Brandon said I had no say in that, which caused them to drag mud in and out of the house andin the lower level where the HVAC was located. I had to clean my carpet after it was finished. I cannot tell you how upset I have been with the service, the battle I had about even receiving an invoice and other information about what kind of a HVAC I even had installed. For a cost of over $12,000, there were no documents given to me at all. From the very start with the high pressuring from the sales person, Brandon, to the very expensive cost of this HVAC, to the Installation, to the lack of any response regarding concerns I’ve had, Pietre One Hour has not been supportive. I’m so sorry i continued to be loyal to them as they certainly were not loyal to me a 25 year Customer. Unfortunately I now learn of their bad reputation by many others. I only hope this message will help others not to experience what I have, Thank you, Amber for all you did for me: cleaning out of my dehumidifier, which One Hour was supposed to be maintaining for me and had not, for finding all the other Installation errors in my HVAC, for making me feel like I finally received some service that was much needed. Please be aware when making this very costly purchase that you have a good installer and service provider behind you. Fran Soper”

Kimothy Snell

03-13-2025

“Please have him return whenever I need service. Very knowledgeable and answered all questions.”

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, were an independently owned and operated business with a personal investment in the local community. We back our work with a 100% satisfaction guarantee, provide StraightForward® 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.