top of page
Interior Design

Welcome to Air Experts Inc.

Your Trusted HVAC Contractor For Over 30 Years


For over 30 years, Thomas D. Stern Air Experts Inc. has provided families in the Baltimore-Washington area with excellent, reliable heating and air conditioning services. Our family-owned company, established in 1993, offers expert service across multiple counties in Maryland, tackling jobs of all sizes with a commitment to quality and customer satisfaction. We accept all major credit cards, checks, and financing through Wisetack. Now offering interest-free financing options of up to 24 months.


Our Services

Quality Contracting at Competitive Rates


Filter Maintenance and Replacement

Are your filters dusty or dingy? Is something wrong with your system and you're not sure what it is? For over 30 years, we’ve earned a reputation for absolute customer satisfaction. We offer Filter Maintenance and Replacement and many other services at competitive rates, all while providing clients with personalized attention that’s catered to their needs.

Carrier_Outdoor_Unit_Angled II.jpg

Residential HVAC Installation

Did your HVAC system recently give out? Did the summer heat or winter cold take a toll on your systems? Since 1993, we’ve provided our clients with a wide range of contracting services, including Residential HVAC Installation, at competitive market rates. If you’re looking for a certified expert for your next project, we're the people to call.

Fixing an Air Conditioner

Custom Duct Work & Cleaning

Our clients are our number one priority and we’ll go the extra mile to make sure they’re completely satisfied with our work. Have a specific project that requires attention to detail and custom work? Our Custom Duct Work and Cleaning services are designed to tackle even the most complex projects. Call us today to discover how we can help.

More Service Options

Customizable Services to Fit Your Needs

Air Duct
Air Conditioner

Air Flow Checkup

Seasonal Maintenance

Other Available Services

Gas Line Installation & Conversion

Natural Gas & Propane Conversions

Heat Pumps, Furnaces, & AC Systems

Installations Done Right

Fujitsu Mini Split Systems

Easy Ways to Condition Uncomfortable Spaces

Boilers & Oil Furnaces

Service & Replacement Professionals

UV Light Systems & Air Cleaners

Customized Indoor Air Quality Control

Interior Design

Affiliated Companies

Who We Work With

official carrier logo.jpg
Computer Keyboard


Committed to Excellence

As professional HVAC Contractors, working with clients across the Baltimore/D.C. area, we provide affordable work without sacrificing anything when it comes to quality. See some of our latest reviews below.


Interested in Financing?

We have numerous options to finance your next project. Find your perfect match.


Certified Professionals

Anne Arundel County

Baltimore County

Carroll County

Frederick County

Howard County

Master Gas Fitter

Montgomery County

Prince George's County

State of Maryland - 2365



What areas does Air Experts Inc. work in?

The greater Baltimore-Washington area. Counties include Anne Arundel, Baltimore (county), Carroll, Frederick, Howard, Montgomery, and Prince George's. We also service a specific area of D.C. right over the Maryland line, mostly near American University, by Chevy Chase. If you have any questions regarding our service area, please don't hesitate to call us and ask.

How often should I have my systems maintenance?

Twice a year, ideally in the spring and fall. Please call us to schedule your seasonal maintenances and we'll be happy to set up an appointment. Seasonal Maintenances will protect the performance of your equipment and prevent breakdowns. Keep your equipment happy, keep your home comfortable.

How often should I change my filters?

Every 30-60 days depending on the contamination levels of the filters. If you're unsure, you can always give us a call.

My system is leaking water, what do I do?

Turn the system off because water can cause damage to the system, floors, or ceilings. Then call us immediately and we'll set up an appointment as soon as possible.

Do you have same-day availability?

Most often, yes. To avoid longer wait times, avoid peak times of the seasons like the first extremely hot or cold days of summer and winter. Make sure to turn on your systems before temperatures rise or fall drastically to get ahead of the rush. Make sure to schedule your seasonal maintenances in the spring and fall to avoid long wait times and keep your home comfortable.

Do you offer weekend or emergency service?

Yes. Costs for emergency and/or weekend services do increase, so if possible try to schedule appointments during the week (Monday-Friday) or ahead of seasonal rushes in the summer and winter.


7159 Harlan Ln, Sykesville, MD 21784, USA

(410) 984-2655

Open 7 Days A Week · 7 a.m. - 7 p.m.

  • Facebook
Air Conditioner
bottom of page