Let Us Make Your Home Feel Like Home

Columbia 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

Awards & Badges

  • UWin Badge Gold and Green
  • BBB A+ Rating
  • Energy Star
  • Air Conditioning Contractors of America
  • Available 24/7 Blue
  • Google Guaranteed Partner
  • PHCC Red Logo

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.

  • “Steven was professional, upfront, friendly, and got the job done fast.”

    - Philip C | Columbia,
  • “Rudy is the go-to man, suggest you ask for him specifically if you use one hr AC and live in the Odenton area. He was knowledgeable and polite, all around great experience.”

    - Joe A | Odenton,
  • “Technicians Gerardo and Kyree (pls forgive any misspelled names) did a great job with the duct cleaning for our home. They were knowledgeable, efficient, personable, and patient with our ...”

    - Ross, P | Columbia,
  • “I have had One Hour Heating for years, and have never had a bad experience!! Brian has taken care of my maintenance needs before and he’s first rate!! He immediately noticed a couple of things that ...”

    - Sherry K | Hanover,
  • “Stephen was very knowledgeable. He explained everything to me no matter how many times i asked a question. Everything was explained clearly so that i understood what was going on with my heating ...”

    - D.B | Ellicott City,

Columbia, MD HVAC Services

Elite AC & Heating Services from a Trusted Local Team

One Hour Air Conditioning & Heating® of Columbia is the premier provider of Columbia HVAC services. Our technicians are some of the most highly-trained, well-equipped experts you’ll ever find, but what really sets us apart is our commitment to good, old-fashioned customer service.

Services We Offer

Our services cover all aspects of your HVAC system needs, including but not limited to:

Whether we are providing routine maintenance, installing a new system, or showing up at 3 a.m. to repair a broken part, the only priority of our Columbia HVAC technicians is your comfort. That means reliable repairs, of course, but it also means ensuring that our technicians are trustworthy, well-trained, and regularly drug-tested.

When you’re looking for old-school service with new-school technology, call One Hour Heating & Air Conditioning® of Columbia!

For reliable Columbia HVAC service, contact One Hour Air Conditioning & Heating® of Columbia by calling (301) 918-5642 or reach out online!

Columbia Cooling and Heating Services We Offer

AC Services in Columbia, MD

Our professional AC services offer a range of solutions, including installation, repair, and maintenance. Whether you need a new AC system installed, repairs for a malfunctioning unit, or routine maintenance to optimize performance, these services are readily available.

Skilled technicians are equipped to handle various AC models and can diagnose and address issues efficiently. With their expertise and commitment to customer satisfaction, residents of Columbia can rely on these AC services to keep their homes cool and enjoyable throughout the year.

Heating Services in Columbia, MD

Residents can rely on our professional heating technicians to keep their homes warm and comfortable during the colder months. Our heating services offer a range of solutions, including installation, repair, and maintenance of heating systems. Skilled technicians are equipped to handle various types of heating systems, such as furnaces, heat pumps, and boilers.

Whether you need a new heating system installed, repairs for a malfunctioning unit, or regular maintenance to ensure optimal performance, these services are readily available. With their expertise and dedication to customer satisfaction, residents can trust these heating services to provide reliable and efficient heating solutions.

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100% Satisfaction Guaranteed

Why Our Columbia HVAC Services Are Trusted

People call our Columbia heating and AC experts because we care about quality—so much so that we back our work with numerous guarantees to keep our customers happy and comfortable in their own homes. For starters, we offer a 100% satisfaction guarantee for up to two years after your service. We also offer maintenance plans to keep your system healthy and working for many years. Out of respect for your time, we also have a punctuality guarantee: “Always On Time...Or You Don't Pay A Dime!®” With other guarantees and promises behind our results, you’ll never feel anything but in control and taken care of.

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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 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.
  • What is HVAC?

    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.
  • 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.

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