About Us – Sobieski Services | DE, NJ, PA, MD

About Us


Who We Are


Whether you’re in Healthcare, Education, Technology, or other industries, Sobieski is here to help make your business comfortable, safe, and efficient. With a background in both residential, custom, and commercial work, Sobieski is your local partner for effective and efficient commercial work on HVAC systems, Plumbing, Alarm and Sprinkler systems, and even phone line solutions. Our team of experts prioritizes your people and your project, making sure to take every precaution and use the highest-grade technology while working on your building.

Sobieski trucks


About Sobieski Commercial Services


With our years of experience and top-quality training, Sobieski is ready to help your property become the clean, comfortable and safe environment you’ve always wanted. Paying close attention to indoor air quality, humidification levels, temperature, and energy efficiency, Sobieski is happy to help your building, facility, or business space with our broad range of HVAC services.

red, orange and blue tubing
plumbing wrenches

With over 30 years in the mechanical contracting industry, Sobieski has the professional experience, the equipment and the desire to deliver a professional solution to your commercial property’s plumbing problems.

At Sobieski, we’re at the forefront of technological developments that allow our team to propose the most advanced and cost efficient solutions for your needs. We believe in providing all of our clients with options so that you can have peace of mind about which decision to make – we help you choose what is best for your situation immediately and in the long-term!

We stand by all of our work and whether you require our assistance for installation, repairs or service in HVAC or Plumbing, you can rely on us to get the job done right.



About Sobieski Life Safety


Sobieski Life Safety is the region’s most sophisticated design/build fire suppression and life safety solutions for commercial builders, general contractors and property owners, our Fire Protection Division can design the system you need. We know time is money, and how important it is for you to complete your project on schedule and receive a timely certificate of occupancy, while meeting even the most stringent fire codes. And most importantly, should the time ever come, we know how important it is for your fire suppression system to perform as designed, keeping your assets, your employees, your business, and your future protected.


Interior of the Library of congress

Even the Federal Government entrusted us to retrofit the fire suppression systems to protect one of the most important repositories of U.S. historical documents, the Library of Congress!

Business owners and property managers consider us their “one stop shop” solution for all fire suppression and fire alarm needs. Our Alarm Division provides a full suite of products and services, including new installations, upgrades, retrofits, emergency service and maintenance, quarterly and annual inspections, and a full line of monitoring options. From the most basic systems to sophisticated detection systems, Sobieski Life Safety has the solution that fits your needs and budget. Our job is to keep you and your business inside our ring of protection.





Helping hands

How We Can Help:


Reduce owning and operating costs
Enhance responsiveness and service
Improve equipment reliability and uptime
Increase energy efficiency and sustainability
Increase building comfort
Improve indoor air quality

Hand holding money

Solutions That Build Value:


Proactive & Preventative Maintenance
Top-tier engineering solutions
Retrofits & Replacements
Commissioning and Recommissioning
Building Automation & Controls
Energy Benchmarking
Energy Efficiency Programs
LEED / EnergyStar Certifications
System Design


Our Processes


The best time to avoid cost on a project is in the planning stages. Often during the pre-construction phases of a project – programming, design development, production design, estimating – the design team may desire consultation on the constructability aspects of a project. At Sobieski, we have the knowledge and experience to provide strong value engineering and constructability guidance for the project team. Our construction professionals can provide constructability guidance in material options, equipment options, scheduling strategies, budgeting, scope packaging, and other cost-avoiding strategies to employ during the pre-project planning.


With our emphasis on pre-construction planning, Sobieski has incorporated our Fabrication Shop as a key element for project execution. Equipment-wise, our shop facility includes a fully automated (CAD/CAM) ductwork coil line that ties directly into our BIM system.


We also use automated pipe welding processes and other automated duct and piping equipment in our shop. When we combine this shop equipment with our detailed pre-project planning, we are able to optimize the amount of field work needed for a mechanical installation. Items such as pre-cut/pre-assembled pipe spools, pre-assembled ductwork, hangers, and other pre-assemblies are prepared in our shop and shipped out to our field teams for installation. This prefabrication process results in more controlled compliance with safety, quality, and schedule, and less laydown space than the normal field cut/fit process.





Sobieski is licensed in Delaware, Maryland, New Jersey, and Pennsylvania, so we can serve your business wherever you are across the region.

Certifications & Training


To better serve our clients, many of our inspectors are NICET certified, in addition to other federal, state, and local requirements. Some of the certifications they maintain are:

  • TWIC

Proud Sponsor of Delaware VetFest 2024

US Army
NATE Certified logo
Better Business Bureau
HPAC Engineering Design Awards 2013 logo
Frost & Sullivan Best Practices Award logo
National Comfort Institute
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