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 Greenville

4.8

(1234 reviews)

Heating & Air Conditioning

Services By One Hour

View More Services

HVAC Repair, Installation & Maintenance

Heating, AC & Furnace Repairs in Greenville, SC

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 Knowledgable

4.8

(1234 reviews)

Michael Surrena

a week ago

“Jake was outstanding, he took the time to fully diagnose the issue with our AC system and advise us on what was needed to correct the issue from a prior improper installation. He put the quote together and we gladly signed off and also join their maintenance club. Outstanding communication and service, Jake showed up ahead of schedule, I highly recommend Jake and One Hour for your AC/Hearing needs, Thank you very for such outstanding service, you have a customer for life!”

Danielle Long

4 weeks ago

“I was so pleased with this company and the service. The price is comparable to competitors The maintenance plan is unbeatable. The technician was super friendly and professional, and I could tell he knew exactly what he was doing. On a Friday morning in the middle of the summer, I searched for someone that could make it out here not really thinking it would happen with this late of a notice. Spoke with the nice lady in the office and it was no problem getting someone out here not only today but before noon and they accommodated me so that I can get back to work. I would definitely recommend this company!!”

P Gunter

a week ago

“Customer service was outstanding from the beginning. Megan kept us updated on when our technician, Chris, would be arriving. Chris was pleasant, professional, informative, and efficient. My wife and I both agreed he has a friendly demeanor and a great handshake. If you meet him, ask him to show you a picture of his new son.”

John Shaw

2 weeks ago

“We came home from a Quick vacation and our air conditioner had stopped working while we were gone. It was 81° in the house! We had a miserable night sleeping but called one hour heating and air conditioning to come out and service our air conditioning for next Morning. Steven was here within just a few hours! He did a great job getting us up and getting our house cooled again. Highly recommend one hour heating and air conditioning! Thank you, Steven, for a great job!”

Kate Paluch

3 months ago

“I've been a customer for I think we'll over 5 years now. I have their yearly service program too. They still impress me with their overall kindness and knowledge base. Each and every person I meet from this team has been super helpful, provided knowledge sharing and over all worked with me through the process. My relationship with this team started when we were out of town for the weekend (on the West Coast) and our air went out at the end of May (when it's getting hot where I live). Our sons and doggos were home in a 95 degree house and were stressed. I spoke to either Megan or Darlene (or both lol) and they reassured me and got JP right out. They made it easy for me to relax because of their communication and understanding. Since then we've been working with Dakota for our yearly service needs, he's so great even my parents use him and one hour now. Last week he realized that our over 10 year old system had a leak. He got Danno right out to assess it for us and we decided to replace it. Yesterday we worked with Noah and Daniel and I just can't stress enough how great everyone from one hour is. Both Noah and Daniel were extremely efficient as well as respectful. I had recently planted flowers and I didn't even have to ask Noah, he made sure nothing was trampled on me. He even put a little sign back on my unit for me without me asking. Super appreciative for everyone at One Hour. Great team and it shows! Thanks everyone!”

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, weâ€™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 StraightForwardÂ® 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.