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 Heating & Air Conditioning® of Pasadena

(57 reviews)

Heating & Air Conditioning

Services By One Hour

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Stay Cool with AC Repair in Pasadena, CA

100% Satisfaction Guaranteed

When homeowners want a reliable air conditioning and heating system that they don’t have to think about, they call One Hour Heating & Air Conditioning. We are the leading HVAC service provider in the Pasadena for a simple reason: we actually care about your comfort.

At One Hour Heating & Air Conditioning® of Pasadena, 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

(57 reviews)

Caroline Tanaka

a week ago

“Two Words - THE BEST!! Brian, Jansen and Kevin are amazing!!! I had an over 20 year old ac unit that needed the boot and they came over, gave me and estimate and we started work the next day! There were a number of unforeseen issues but Kevin and Jansen went to work!! When I say work, they worked… They stayed later when needed. They weren’t on their phones, Taking lots of breaks, etc… They were locked in on getting our AC unit up and running for us. I truly would recommend these guys for all your AC needs. Jansen is knowledgeable and takes the time to explain everything!! There are no stupid questions with him! I would recommend them 1000 times over!!”

Lefty

a month ago

“The team's dedication to providing excellent service truly stands out. Their expertise and efficiency were evident throughout the entire process. It is clear they take pride in their work and strive for customer satisfaction. The friendly and professional demeanor of everyone involved created a positive experience. I highly recommend their services to anyone in need. Thank you, Brian Jansen and Kevin.”

Karlea Berg

a month ago

“I had a great experience with One Hour Heating. They were prompt and had excellent communication which I appreciate. The tech was knowledgeable and great at explaining everything to me. Their pricing was up front and there were no surprises. I would definitely use them again!”

Wendy Leon

a month ago

“I had an excellent experience with One Hour. From start to finish, their service was professional & reliable. It’s rare these days to find a company that truly lives up to its slogan Every interaction showed their commitment to quality, customer satisfaction, and doing the job right the first time. If you’re looking for an HVAC company that truly embodies everything they stand for, look no further (:”

S. Marie

2 months ago

“I had an excellent experience with One hour. From start to finish, their team was professional, courteous, and efficient. The repair was completed swiftly, with multiple options given, and my system is running perfectly now. I truly appreciate their honesty and transparency throughout the entire process. I couldn't be happier”

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 StraightForwardPricing® 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.