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 Air Conditioning & Heating® of Tucson

4.7

(487 reviews)

Heating & Air Conditioning

Services By One Hour

View More Services

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

HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in Tucson, AZ

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

4.7

(487 reviews)

Abby Power

03-04-2025

“Love these guys”

John Manje

02-19-2025

“Wonderful service and very informative and helpful.”

karrieanne murdock

01-13-2025

“Armani C. Came out and looked over our year old unit and was able to quickly and effectively identify the problem and fix it with no problems.”

Michael Murdock

01-13-2025

“These people get the job done! Armani Cerveri came out because our heat pump wouldn't come on. He found and cleaned the corroded sensor that was causing the issue and got us back up and running. When his repair had a hiccup late this evening, he came out and found and fixed the short. Brittany the Office Manager has also been quick to respond and find solutions as we've navigated this experience. This team is top tier. Thank you all again for getting our heat back on - you all are amazing!”

kurt grigg

01-02-2025

“Shane was here and did our heating unit inspection. Very knowledgeable and did his work expeditiously. Thanks Shane for the great work!”

Victoria Jones

01-01-2025

“Armani was great! He is professional, kind & efficient. He determined the problem accurately and was able to get our heater working again in no time. We are very happy to have worked with him.”

Terrence

12-27-2024

“Very good service from the call to setup the appointment until the tech left. Great customer service from both the scheduler to the tech. Very very happy with the service. Will recommend to others”

Mac Mackinzie

12-17-2024

“Have had them come and service my heater for the past 2 years (minor adjustments ) they are very responsive and know what they are doing. 5 star all the way.”

Special Offers

Mention at time of service

$59

$59 A/C or Heating Tune-Up. Regular maintenance on your HVAC system keeps it running at its best. Book your Tune-Up today. Originally $119

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.
$200 Off Duct Sealing

Did you know 25-40% of the air that’s supposed to blow through your vents is escaping through cracks and holes in your air ducts?

Wasting heating & cooling areas like your attic & even behind walls. Not only that dust debris and allergens are being sucked in and blasted all over your house.This is why your bedroom is freezing, your coffee table is always dusty & high Energy Bills

Cannot be combined with any other special
Free Service Call

with any Completed Repair

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.
$50

Take $50 off your next duct cleaning

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.
$50

Take $50 off your next repair

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.
Free Diagnostic

With Repair

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.
Free Estimates

For New Units

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.

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 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.

0% Financing Available

Prioritize your comfort without fronting the entire bill on day 1 – contact us today to learn more about financing options.

Discover Your Options

Meet the Tucson Team

Elizabeth Cerveri

Comfort Advisor

Elizabeth Gallo has been in the HVAC industry for 15 years. Elizabeth has three children and is a Tucson Native.
Armani

Technician
- What do you like about your job?
Learning new things and helping people
- Why did you choose to get into the HVAC field?
Family Tradition
- What does it feel like to help someone in need?
Feels great and rewarding
- Where do you live?
Tucson
- What’s your family like?
Very Close
- Do you have any pets?
Yes, a dog
- What’s your favorite place to go out and eat?
Mexican Food
- What do you like to do when you’re not at work?
I am in the National GuardÂ and working out
Brittany

Office Manager

None
Danielle

Office

Hello, I’m Danielle, a dispatcher with a growing passion for indoor air quality. As a Tucson native, I’m dedicated to helping my community enjoy healthier, more comfortable homes. I’m excited to apply my new skills to make a positive impact in people’s lives.

Outside of work, I enjoy knitting, dancing, outdoor activities, and spending quality time with my children. For me, it’s all about finding balance and pursuing what I love. I’m grateful to have a career that allows me to contribute meaningfully while supporting my passions both at work and at home.