Stay Cozy and Save Big with S&L Prime A/C & Heating Systems

Family Owned and Operated HVAC Company Since 1989

Bringing Comfort Home

Trusted and Certified

maryland family


HVAC Company

S&L Prime has provided Baltimore, Towson, Catonsville, Perry Hall, White Marsh, Bel Air, and other areas throughout Maryland with unparalleled HVAC services for over 30 years. Over those years, we have consistently maintained a high level of service and have offered efficient heating and air conditioning solutions to residents throughout Maryland. 

As a family owned and operated local business, we are dedicated to offering top quality, affordable HVAC solutions. Whether your heating and cooling system needs maintenance, repair, or replacement, S&L Prime is your best resource for ensuring the temperature in your home stays as comfortable as possible.

S & L Prime A/C & Heating Systems, Inc. is an Elite Mitsubishi Diamond Contractor. Diamond Contractors are expert HVAC technicians achieving an exceptional level of training, expertise, and customer satisfaction.


HVAC Services and Maintenance

home air conditioning

Mitsubishi Mini Split Ductless & Ducted High-Efficiency Heat Pumps

Top of the line, energy-efficient units that will ensure each and every room in your home is comfortable and customizable to fit your needs.

HVAC technician service

Conventional HVAC Systems: Gas, Heat Pumps, A/C, and Propane

If you're looking for a more traditional HVAC system, we're happy to help. We work with all major brands including Trane, Goodman, Carrier, Rheem, Ruud, and Mitsubishi.

digital thermostat

HVAC Repairs, Service & Maintenance

No matter what kind of system you have, we will work with you to make sure it's well cared for. Our technicians have decades of experience working on a variety of systems.

Worried About Paying for Your Repair, Service, or Installation?

Our family prides ourselves in offering you a variety of options to save money on your service. Save with our promotions, rebates, and financing!


A Trusted and Reliable HVAC Contractor

I was very impressed with Steve and his son. The communication was great either by phone or email. They came to the house on time and got right to work. The install was clean and looked very good. His price was very competitive and lower than these large companies. I will use S&L for all my properties.
Baltimore family at home
Shawn G.
Windsor Mill, MD
HVAC system maintenance