About AIRSOURCE, LLC in Baltimore, MD
AIRSOURCE, LLC is a locally owned HVAC contractor based in Lutherville-Timonium, MD, licensed, insured, and factory-trained on the equipment we install.
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From AIRSOURCE's project photos on Thumbtack
Built on the phone calls we still get
AIRSOURCE, LLC was established in 2014 to serve the Baltimore County area and beyond with straightforward, factory-trained HVAC work, installation, repair, and maintenance across air conditioning, heating, ventilation, and indoor air quality, for residential and light commercial customers alike.
Owner Eli Borkowski holds a Maryland HVAC Master License and personally handles many of the jobs that come through the door, reviewers across Google and Thumbtack consistently mention him by name, whether it's a same-day emergency repair or a full system replacement.
AIRSOURCE is an authorized Trane & Mitsubishi Electric dealer, meaning the team has completed manufacturer-approved training on the equipment it installs, including Mitsubishi's ductless mini-split systems, a growing share of the company's install work.
Credentials that back the work
Maryland HVAC Master License
The state's highest HVAC licensing tier, held by owner Eli Borkowski.
Authorized Trane & Mitsubishi Dealer
Confirmed on AIRSOURCE's own Google Business and Thumbtack profiles. See our certification →
Background Checked & Insured
Verified through AIRSOURCE's Thumbtack profile, alongside license verification.
What Baltimore-area customers say
“Eli is an amazing individual. Very humble and patient. Dedicated to his work and really smart on the HVAC business. I totally recommend him to do anybody's job.”
“I highly recommend Eli at Air Source for all things heating, ventilating, and air conditioning. Not only do I use him personally, I also refer him to my clients professionally. He is honest, responsive, and my go-to for HVAC industry knowledge.”
“Eli has done repeated work for my company as well as my personal property. I always recommend him!”
“Eli is an amazing individual. Very humble and patient. Dedicated to his work and really smart on the HVAC business. I totally recommend him to do anybody's job.”
“I highly recommend Eli at Air Source for all things heating, ventilating, and air conditioning. Not only do I use him personally, I also refer him to my clients professionally. He is honest, responsive, and my go-to for HVAC industry knowledge.”
“Eli has done repeated work for my company as well as my personal property. I always recommend him!”
About us: frequently asked questions
AIRSOURCE, LLC is owned and operated by Eli Borkowski, who holds a Maryland HVAC Master License and is personally involved in much of the company's day-to-day work.
Yes. AIRSOURCE holds a Maryland HVAC Master License and is background-checked and insured, as verified through its Thumbtack profile.
Yes, AIRSOURCE handles both residential and light commercial HVAC work. Learn more about commercial service →
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