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

(210 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

(210 reviews)

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!”

Hahn Norden

07-09-2025

“Joshua’s diagnose was right on. He repaired the fan & the blower, which he diagnosed to be broken, and the AC was up and running. Very knowledgeable & thorough at a reasonable price. They have us as a customer for life!”

Greg Lovell

07-08-2025

“Our tech, DeVonte, was punctual and we were notified when he was on his way. He was polite, good natured, and professional. He told me what he was doing, what he found, and what work to expect in the future. Quick, thorough and professional. I would recommend them.”

Stephanie Rieper

07-08-2025

“Devonte was great and friendly. Very thoughtful and easy to understand what was going on with our A/C.”

Rachel Costas

07-08-2025

“Joshua was fantastic! He promptly came to our property and immediately eased my concerns about potential issues in our air ducts. He was incredibly knowledgeable, thorough, and professional throughout the visit. It’s clear he knows his stuff, and I felt completely confident in his assessment. We’re looking forward to working with One Hour Heating and Cooling, and we would absolutely recommend Joshua and the team to anyone needing HVAC support!”

Cedric Tu

06-23-2025

“I called one hour heating and air about my AC situation and they came out immediately. Josh and Devonte Accessed the problems on the spot and recommended solutions. They were able to fix my outdoor unit but also recommend long term solutions. Will be using them in the future!”

Michael Lamonica

06-22-2025

“A/C stopped cooling Saturday night. They were out here an hour after I called Sunday morning. Very professional and knowledgeable. Highly recommend.”

Shlomi Harif

06-18-2025

“Joshua was fast, thorough, and more than prompt. Awesome fix!!”

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.