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 Cedar Park

4.9

(219 reviews)

Heating & Air Conditioning

Services By One Hour

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HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in Cedar Park, TX

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 Knowledgeable

4.9

(219 reviews)

Celena Fuller

07-31-2025

“One Hour Heating & Air Conditioning is amazing! I highly recommend them! They came out right away and Cobi was the one that came to the house and worked on the a/c. He is a very professional and friendly gentleman and took everything very seriously and made sure everything was properly done. We have babies and trying to get someone out here was not easy but as soon as we gave yall a call yall where on top of it and I cannot thank yall enough! Thank you one hour heating & air and Thank you so much Cobi for coming out and taking care of us!”

Ryan Hearlson

07-31-2025

“Cobi did great he was very knowledgeable and tough me a lot about my unit highly recommend”

Melissa Realtor (Melissa Jung)

07-31-2025

“They were there when I needed help and responded quickly. I really appreciate the prompt and professional service. Truly reliable!”

Mike P

07-31-2025

“Joshua T. Came over and got us right. Had a late night issue with my AC, called One Hour and they had him come over. He was very professional, explained a lot and got us cold air back up right away. Than you so much!!”

Amelia Kaul

07-26-2025

“Cobi got our A/C back online within a few hours after it went out around midnight. He arrived first thing in the AM and had all the necessary equipment that our system was requiring. We have a 2-week old infant or else my husband and I wouldn’t be as concerned with waiting for repairs in the dead of summer, as this is the busy time of year for HVAC. Cobi and One Hour, thank you for understanding our situation and getting us fixed up. It means the world to us!”

S S

07-18-2025

“Very nice folks I have come across here with their generous special they offered for 1st responders / veterans / etc.. Cobi came out to do the complimentary service and it was not your average quick come and go service. He spent alot of time going over every part of and aspect of my hvac system and was extremely knowledgeable and a super nice guy. I would definitely use and recommend One Hour Air ! 2 thumbs up !”

R Wilson

07-18-2025

“Devonte from One Hour Heating and Cooling did an exceptional job getting my air conditioning system in my store back up and running. From the moment he arrived, he was professional, respectful, and clearly knowledgeable. He took the time to carefully inspect the entire system and was very thorough with his investigation. What stood out most was his ability to quickly detect the root cause of the issue and explain it to me in clear, understandable terms. He didn’t just do a quick fix—he made sure everything was operating correctly and efficiently before he wrapped up. His attention to detail and commitment to getting the job done right gave me peace of mind. I truly appreciated his courteous demeanor, patience, and the pride he took in his work. It’s not every day you come across a technician who is both highly skilled and customer-focused. Highly recommend both Devonte and One Hour Heating and Cooling for reliable, professional service!”

Evan Calderaro

07-14-2025

“DeVonte was very respectful, informative, and thorough with his work.”

jgsnow baorder

07-12-2025

“Jacobi did an exceptional job for us, arrived quickly, completed a truly monumental task, and got our AC up and running asap! He really truly deserves a raise for exceptional work and his stellar customer service attitude!”

Josh Buie

07-12-2025

“Jacobi was amazing request him by name. Got the job done, took photos clear explanation. Give this guy a raise!”

Special Offers

Mention these discounts at time of service

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Seniors Discount 10% off 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.
First Responders Discount 10% off 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.
Veterans Discount 10% off 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.

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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.