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

McCarthy's One Hour Heating & Air Conditioning®

4.8

(1876 reviews)

Heating & Air Conditioning

Services By One Hour

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Heating Repair, AC Repair, HVAC Installation & Maintenance

HVAC, AC & Furnace Repairs in Omaha

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

We offer complete heating and cooling services throughout Omaha and surrounding communities, including:

If you never want to worry about your HVAC system again, consider a Club Membership. When you join, you’ll enjoy in-depth yearly system inspections, priority scheduling, discounts on parts and repairs, and other exclusive member perks.

At One Hour Heating Air Conditioning of Omaha, we respect you, your time, and, most importantly, the trust you put in us to keep your home comfortable. That’s why we back all our work with a 100% customer satisfaction guarantee for two years. We provide you with our StraightForward^® Pricing Guarantee so you know what the service will cost before we start the work. Plus, we’re so committed to arriving on time that we’ll pay you back for being even one minute late to an appointment.

We Have a Reputation

For Being Punctual, Friendly and Knowledgeable

4.8

(1876 reviews)

Tom Murnan II

07-17-2025

“McCarthy's was fast! My A/C went out and I called at the end of the work day Wednesday and they came out the following morning. Jacob Petry was our technician and he was quick, courteous, and informative. I would definitely use McCarthy's again in the future.”

Carissa Wieseler

07-16-2025

“McCarthy’s service was great. I called for a dryer vent cleaning service, and the technician was over the next day. The technician Jake was wonderful. He came on time and was quick, but thorough. He described everything and talked things through with us. Overall great experience with this company!”

Darryl Petersen

07-14-2025

“Everything went flawlessly! Great technician”

Jason Densberger

07-11-2025

“Jack did an amazing job he was on time very friendly and had my air conditioning up in running in no time thank you all so much because last night was miserable as it was 80 degrees in our place will definitely use you all again in the future if needed!!”

Chelsey Easton

07-11-2025

“I would definitely recommend McCarthy’s One Hour Heating and Air Conditioning! They were so quick to get out to help us. I booked online on a Friday morning and they were here a couple of hours later. Sam was very knowledgeable and made sure to explain everything and answer our questions.”

Amy Hemje

07-11-2025

“We had another service come out that clearly wanted to just sell us a new system. Then we called Macarthy. Not only did they report one of the potential problems to not be a problem, but they also found the real problem. Instead of just reporting it as a potential fix, he fixed it first to make sure the unit would function with the cheaper fix. I’m very impressed with the knowledge and ability!”

Brenna Williams

07-09-2025

“He was great! Very professional and courteous and asked more then once if I had any questions. Love these guys!”

Jason Stoops

07-08-2025

“Fast, easy, very professional from start to finish. I will use them again!”

Dave Brokman

07-07-2025

“Thank u avery for clearing my sink drain today... top notch”

Thomas Malik

07-06-2025

“Very good and polite. Set me up with a follow up so I can get my unit replaced”

Special Offers

Mention these discounts at time of service

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$50 Off

Any 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.
$79 Full System Tune Up

One Time Use Only

Coupon must be presented at time of purchase. Cannot be combined with any other offers or discounts. Valid Only one per household, per lifetime.

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HVAC Services You Can Count On

When it comes to HVAC companies in Omaha, you have plenty of options. But there are lots of reasons why so many of your neighbors and friends recommend us for furnace repair, ac repair, and HVAC replacement.

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 a locally owned and operated business with a personal investment in the community. McCarthy’s One Hour Heating Air Conditioning is also proud to be a veteran-owned business and an avid supporter of Omaha Heart Heroes.

When we onboard a new HVAC technician, he or she undergoes an extensive background check to ensure our customers’ safety. We strive to maintain the most experienced and highly skilled HVAC team in Omaha by hiring only the best HVAC professionals and providing them with continuous training opportunities. When our techs are on the job, they follow a strict code of conduct that ensures complete customer comfort and satisfaction.

Find out for yourself why customers love what we do. Call our Omaha HVAC repair, installation, and maintenance team today!

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.