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Annapolis, MD

HVAC Service you can count on

4.8

(336 reviews)

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Heating & Air Conditioning

Services By One Hour

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HVAC Service Near Me 
—Available 24 Hours

One Hour Heating & Air Conditioning understands that heating and air conditioning issues create uncomfortable living situations — especially when temperatures outside are extreme. Luckily, our customer specialists are on standby 24/7 to fix your urgent issues. Whether you need HVAC installation, repair, or maintenance, our HVAC service experts are ready to help.

Emergency HVAC Services

We offer 24-hour emergency HVAC services – even on weekends and holidays – to ensure you have professional support when you need it most. Arriving with service trucks stocked full of specialty parts and tools, we have the equipment needed to fix many HVAC problems on the spot. In the case that additional parts are needed, rest assured – we will do everything in our power to handle your HVAC emergency quickly and efficiently.

Air Conditioning

Whether you need an emergency replacement, regular maintenance, or installation services, our qualified technicians have the experience and technological resources to get any HVAC job done correctly. We utilize the latest tools, products, and techniques to stay up to date with cutting-edge changes in the industry.

AC Repair

At One Hour Heating & Air Conditioning, our HVAC technicians service all major AC brands and models. Our AC repair team can fix:

  • Poorly insulated ductwork
  • Power supply breakdowns
  • Defective fans or thermostats
  • Refrigerant leaks
  • Frozen condenser coils
  • Blocked condensation drainage
  • AC short-cycling (turning on and off too quickly)

After inspection, we will provide a detailed estimate.

AC Installation & Replacement

There are many telltale signs that an HVAC unit might need to be replaced. If an HVAC unit is over 10-years old, smells terrible, blows warm air, or produces subpar results as energy bills keep rising, give us a call!

AC Maintenance

For optimal performance, AC units require many parts to work seamlessly together. A single problem can cause a ripple effect of issues. This is why spotting minor malfunctions is critical. With regular maintenance visits, we can ensure your HVAC system is operating smoothly and efficiently. Consider joining our Club Membership for additional customer benefits.

 

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Our Happy Customers

Reviews of Annapolis

4.8

(336 reviews)

Gabriela Kahrl

04-22-2025

“We love seeing Stephen Scott! He’s our favorite technician. He provides excellent, friendly, informative, and kind service. Our whole family including the dogs look forward to his visits!”

kimberly Callahan

04-21-2025

“Very good customer service and very professional”

Erika Zommer

04-20-2025

“Steven Scott was a fantastic technician, he helped diagnose several issues and gave several options for repair. He is very knowledgeable, kind, and professional.”

Linda Kane

04-19-2025

“Stephen Scott solved the mystery! A new part was installed last week but the connections were not right. Now our AC is working well and ready for a hot summer.”

Randy Scritchfield

04-17-2025

“Shawn was great. Very comprehensive inspection and a great communicator – especially in making recommendations.”

Betty Novak

04-16-2025

“Came and spent several hours. Will know better when we can use a/c since it is still too cold to use it.if anything is wrong we will all. Thanks Shaun”

MzFit

04-15-2025

“These guys were great. They had to endure a lot of climbing steps to a small crawl space multiple times until the problem was discovered. His team was excellent.”

Jane Smedley

04-14-2025

“Thorough job, friendly and helpful.”

K. Richardson

04-14-2025

“1 Hour Heating and Air Conditioning did an amazing job getting broken my air conditioner up and running again. Technicians Stephen and Ed provided me 5 STAR SERVICE, replacing my air compressor and outdated breaker box. It rained pretty hard that day, but where others would have called it quits, they simply erected a canopy and got the job done.”

George Neureither

04-14-2025

“Stephen performed his task of replacing our thermostat, by assuring that it was in fact, the thermostat that was bad. He thoroughly assessed the heat and AC modes and determined they were both functioning well, and in fact, it was the thermostat that needed replacement. He clearly explained the kinds of thermostat offered. We made our choice and professionally installed it and went over how to access modes and temperatures, including the circulating fan. I would recommend him to anyone.”