Over 30 Years of Experience

Fast & Friendly Service,
Reasonable Prices.

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Our Mission

Our goal is to be a trusted leader in providing high quality HVAC/R Service and Installation. We value every customer and strive to provide the highest quality of service and to help provide a greater understanding of their heating and air conditioning system. We aim to accomplish this mission by ensuring attention to detail, timely repairs and doing the job right the first time.

featured HVAC services

We provide a wide variety of RESIDENTIAL HVAC and COMMERCIAL HVAC Services.

Residential

commercial

Call now for more information about any of these services.

our customers
love us!

see all testimonials

"We had several quotes to replace our HVAC system, hands down the best price and awesome, quick installation in the middle of a heat wave. Customer for life! "

-David, Pasadena

"The repairman was prompt, courteous and very knowledgeable. He explained everything in detail and gave me helpful tips on maintaining my unit. "

-Chris, Odenton

"Reliable service and very reasonable prices. "

-Mike, Severn

"I placed an emergency heating call, and O'Brien HVAC was quick to respond and resolved our heating problem. THANK YOU! I am now a PMA customer. "

-Christine, Crofton

"Quick response and fixed our Walk-In Cooler during the service call. "

-Dan, Annapolis

recent blog posts

02.23.2019

O'Brien HVAC launches all new, fully-responsive blog!

O'Brien HVAC is proud to announce the launch of our newly designed, fully responsive website. O'Brien HVAC has over 25 years of experience servicing people just like you. We offer unequaled service, respect and the correct products priced right. Our new website only...

Interested in our Services?

If you are dealing with a problem with your residential HVAC system or you are ready for an upgrade to your outdated or inefficient system, contact us for assistance today. An experienced technician will promptly come out to either repair or help decide if it's time to upgrade your system and return your home to a comfortable temperature once more!

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