4350 Lincoln Hwy. York, PA 17406
Phone 717-577-8262 | Fax 717-755-0897

For total indoor comfort, trust

Controlled Environment Technologies.

Our team of administrators and service personnel are dedicated to providing professional design, installation and service of commercial and industrial HVAC systems, along with the basic to the most complex building energy management systems. Our products help you curb your energy costs while giving you full control of your facility. Controlled Environment Technologies: Reliable service since 1976.

Building Management Controls
Indoor Air Quality And Filtration
Design and Build Mechanical Contractor

CET provides building management systems for any sized building. From design to installation to commissioning and testing, CET gives businesses top-of-the-line turnkey service along with fully configurable control customization.

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We have building control systems to manage the energy, comfort and protection needs of your building. A system that integrates all your building equipment, organizes the information in the most logical way imaginable and delivers it where and when you need it.
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CET's ground up, turnkey design and build mechanical contractor services for commercial and industrial buildings include heating, cooling, ventilation, chilled water, air handling, and rooftop HVAC systems.
The efficient design and build process lowers energy consumption.
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Some estimates suggest energy management and maintenance programs can reduce energy use in individual buildings as much as 40%. In fact, the U.S. Department of Energy (DOE) publishes a rule of thumb that operation and maintenance (O&M) programs targeting energy efficiency can save 5%–20% on energy bills with little capital investment at all.

Improving energy efficiency is the first and most important step toward achieving sustainability in buildings and organizations. Energy efficiency helps control rising energy costs, reduces environmental footprints, and increases the value and competitiveness of buildings.

At every level and with every CET service we're driven to save energy, increase comfort, and reduce your carbon footprint.


Conscientious energy use benefits every commercial and industrial building and the brand associated with it. The result is improved public relations, increased customer comfort, and lower energy expenses.

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of energy management.

There may be as many different approaches to building management as there are buildings. Some may view it as simple, programmable temperature control. Others expect comprehensive building management technology that controls hundreds of field devices. No matter where you are on that spectrum, Facility Explorer technology allows you to create a building management systems as simple or as sophisticated as you need. You get flexibility, without sacrificing ease of use and affordability.