We'll Be Here For You When You Need Us Most - Click Here to Learn More
Let Us Make Your Home Feel Like Home

Greenville Heating & Cooling Experts

Always On Time...

  • ‘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.

Get the Best Service Around

Our Happy Customers

Our Comfort Specialists are available to help, no matter the time of day. If you're in need of emergency services, we've got you covered 24/7.

  • “I have used them for years and have never been disappointed.”

    - Atrez F.
  • “Our new system has reduced our heating/cooling bills by quite a bit and that’s a great feeling. We are pleased with this system and the people associated with One Hour!”

    - Kathryn H.
  • “They came right out and repaired my air conditioner. Great service and the guys were very professional.”

    - Donna P.
  • “They stand behind their work, and that means a lot, in my book.”

    - Donna H.
  • “Your service is always available. Your service people, as well as all the people I talk to on the phone, are very helpful and professional. Thank you for being there.”

    - Don A.

Greenville HVAC Repair, Installation & Repair

Call Us for Heating & AC Repair 24/7!

One Hour Heating & Air Conditioning® of Greenville has been Greenville’s premier HVAC service provider since 2003. Our team of experienced HVAC technicians receive industry-leading training and are determined to make you rely on us for all your future needs through excellent customer service.

We don’t play games when it comes to Greenville HVAC repairs, installations, or maintenance. We show up on time, provide honest recommendations, and quickly finish the job. In many instances, we can accomplish a repair or installation in just one visit because of our well-stocked vehicles.
Continue ReadingRead Less
100% Satisfaction Guaranteed

Why We Have Loyal Customers

Residents of Greenville love what we do because we treat them like our neighbors. Of course, we treat them this way because they are our neighbors! Despite being backed by a nationally-respected HVAC company, we are and always will be an independently owned and operated business.

We strive for 100% satisfaction guarantees, pay you back if we’re late to your appointment, and avoid surprises on your bill with upfront pricing. We’re more than an HVAC company; we’re members of your community, and we’re ready to help you today!
Continue ReadingRead Less

Frequently Asked Questions

  • 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 with several lending partners 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.
  • 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.

Part of the Authority Brands Family