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

McCarthy's One Hour Heating & Air Conditioning®

4.8

(1862 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

(1862 reviews)

Mrs. Boss Lady Booth

06-28-2025

“I can’t say enough great things about McCarthy 1 Hour Heating and Air and especially their technician, BioZa! From the moment he arrived, BioZa impressed us with his incredible knowledge and professionalism. He was not only super informative but also worked incredibly fast — our issue was completely fixed within just 15 minutes of him being here. What truly sets BioZa apart is how he took the time to explain everything clearly, giving us valuable advice on what to watch for in the future and helping us understand when it might be time to consider a new air conditioner. It’s rare to find someone who is both highly skilled and genuinely cares about educating the customer. If you want quick, reliable, and expert service with a technician who goes above and beyond, look no further than McCarthy 1 Hour Heating and Air. BioZa’s work deserves an A++ rating — absolutely outstanding! Thank you so much for making this process easy and stress-free. We’ll definitely be calling you again!”

Dave Wojtkiewicz

06-28-2025

“Booked the appointment for service to AC. Was supposed to be after 6 pm. Technician Richard put on a new capacitor. Was there and done before 6 pm and the house is already cooling down nicely! Highly recommend!”

elizabeth sulhoff

06-27-2025

“Absolutely incredible service! McCarthy’s One Hour Heating and Air arrived at my home within one hour of booking, which was a lifesaver since my house was over 100 degrees and I have pets. I was so impressed by how punctual and professional they were. From the friendly customer service to the technician wearing booties to keep everything clean, every detail showed how much they care. I also love that they’re veteran owned. Truly beyond 5 stars—THANK YOU for taking such great care of us!”

matthew malatek

06-26-2025

“Jacob was not only friendly but also highly knowledgeable. He took the time to chat with me while he worked, walking me through each step of what he was doing.”

John Rockwell

06-25-2025

“The technician was excellent. Not only did he have the skills that were required, he was definitely an easy person to get along with 👍”

Joshua Haston

06-24-2025

“Sam came out to inspect my long overdue furnace and AC. Very professional and filled up my refrigerant for maximum cooling. He cleaned up my AC very nicely. Our long haired dogs thank him.”

Erik Chamberlain

06-22-2025

“Our A/C stopped working. The tech Sam arrived when they said he would and he quickly diagnosed the problem. Courteous and knowledgeable. We needed a new system. The salesman Carter came out the next day and presented our options. Professional and detailed. The whole process was about as painless as a $18K decision could be. Their financing options make it all affordable. Highly recommend McCarthy's One Hour Heating & Air.”

Jack Winkler

06-21-2025

“Carter came to check on our AC unit on a Friday night and really helped us out! He was extremely knowledgeable and kept us informed of everything going on. Very friendly and professional! Highly recommend this company”

Annis Clark

06-17-2025

“Very nice young man. It did not take him long to fix the problem.”

Jill Easdale

06-16-2025

“On time and got my AC up and running quickly!”

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.