World Class Service

With Control Services, you are never alone on the operation of your system. We offer preventative maintenance programs, emergency repair and system analysis/engineering capabilities for all aspects of your HVAC and electronic security systems. A building is a dynamic entity that is constantly having new demands put upon it by its occupants, the changing of the seasons and age. We at Control Services understand how these factors impact your building systems over time and have the expertise and experience to assist you with these issues. Our preventative maintenance program can help keep your system operating at peak efficiency. Our around the clock emergency response capabilities quickly resolve problems or malfunctions. You can count on our service department for:

  • HVAC mechanical equipment
  • Variable Frequency Drives
  • Pneumatic Controls
  • Electric/Electronic Controls
  • Direct Digital Controls
  • Software Trouble Shooting for most sophisticated building systems

Comprehensive Capabilities

HVAC Equipment

We service boilers, chillers, rooftop units, cooling towers, pumps, heat exchangers and air handling unit equipment all in an effort to keep you up and operating. A well planned maintenance program with your equipment will result in fewer unexpected breakdowns and unplanned expenses. Listed below are a few reasons why mechanical maintenance is so important.

Extended Equipment Life

We can spot potential problems before they become serious. Our scheduled maintenance programs are designed to extend the life of your equipment and operate it at maximum efficiency. Each agreement begins with a thorough inspection, and then the equipment continues to be regularly inspected and maintained by qualified Control Services technicians.

Reduced Operating Costs

As scheduled maintenance is performed, the system efficiency returns to maximum so operating costs are reduced to a minimum. Ongoing maintenance programs save you money in the long run and are an investment in the future of your business. We can even custom design a scheduled maintenance program to suit the system’s needs and owners requirements.

Preventive Maintenance

As scheduled maintenance is performed, system efficency is returned to a maxiumum and operating costs are reduced.


Breakkdown Maintenance

Emergency services rarely brings the system back to peak efficency. Operating costs continue to rise.


Energy Savings

Work Performed

Potential Energy Saving

Adjusting the operating sequence of equipment 25-35%
Cleaning coils 5-15%
Changing dirty air filters 10-15%
Removing scale from condenser coils 25-30%
Adjusting air/fuel ratio burner 15%
Cleaning burner assembly 15%
Removing soot from fire side of burner 9%
Eliminating belt slippage and poor alignment on fan motors 15-20%

Increased Comfort Control

Comfort complaints are consistently the #1 and #2 tenant complaints, and they have been since 1991. There is a direct relationship between comfort and worker productivity. Workers’ salaries constitute the major cost of operating a commercial building, generally estimated at over 90% of the total operating cost, so even a small increase in employee productivity can substantially increase a company’s financial return. Energy savings and an increase in employee productivity can save building owners, in some cases, millions of dollars each year.


We can and will work on most brands of VFD’s. We are the Authorized Service Center for ABB, Danfoss, Square D and Yaskawa drives. If you think you have a need for a VFD, require service or need to replace your existing VFD let us assist you in that decision.

A Quick Overview

A VFD controls the speed, torque and direction of an AC Induction motor. It takes fixed voltage and frequency AC input and converts it to a variable voltage and frequency AC output. Fairly involved control circuitry coordinates the switching of power devices, typically through a control board that dictates the firing of power components in the proper sequence. Microprocessor or Digital Signal Processor (DSP) meets all the internal logic and decisions requirements. From this description, you can see a VFD is basically a computer and power supply. And the same safety and equipment precautions you’d apply to a computer and to a power supply apply here.

  • keep it clean
  • keep it dry
  • keep the connections tight

Pneumatic Controls

Pneumatic control systems use compressed air to operate actuators, sensors, relays, and other control equipment.

Pneumatic controls differ from other control systems in several ways with some distinct advantages:

  • Pneumatic equipment is inherently proportional but can provide two-position control when required.
  • Many control sequences and combinations are possible with relatively simple equipment.
  • Pneumatic equipment is suitable where explosion hazards exist.
  • The installed cost of pneumatic controls and materials may be lower, especially where codes require that low voltage electrical wiring for similar electric controls be run in conduit.
  • Quality, properly installed pneumatic equipment is reliable. However, if a pneumatic control system requires troubleshooting or service, most building-maintenance people have the necessary mechanical knowledge.

Electric/Electronic Controls

Electric control circuits are used in heating, ventilating, and air conditioning systems. Electric energy is commonly used to transmit the measurement of a change in a controlled condition from a controller to other parts of a system and to translate the change into work at the final control element.

For these purposes, electricity offers the following advantages:

  • It is available wherever power lines can be run.
  • The wiring is usually simple and easy to install.
  • The signals received from sensing elements can be used to produce one or a combination of electro-mechanical outputs. For example, several actuators can be controlled from one controller.
  • Single controller-actuator combinations are possible without the need for a main-air source as in pneumatic control.

Electric controls consist of valve/damper actuators, temperature/pressure/humidity controllers, relays, motor starters and contactors. They are powered by low or line voltage, depending on the circuit requirements. Controllers can be wired to perform either primary or limit functions (high or low limit). Electric actuators can be two position or proportioning and either spring return or nonspring return.

Direct Digital Controls

Direct digital controls are microprocessor-based controllers used in commercial buildings. These controllers’ measure signals from sensors, perform control routines in software programs, and take corrective action in the form of output signals to actuators. Since the programs are in digital form, the controllers perform what is known as direct digital control (DDC). Microprocessor-based controllers can be used as stand-alone controllers or they can be used as controllers incorporated into a building management system utilizing a personal computer (PC) or web-based access to provide additional functions. A stand-alone controller can take several forms. The simplest generally controls only one control loop while larger versions can control from eight to 40 control loops. As the systems get larger, they generally incorporate more programming features and functions.

Control Services has been installing and servicing DDC systems since 1980. We have technicians and programmers that can install, service, repair and optimize your DDC system to meet your demands.


In the world of DDC a lot of manufacturers of mechanical and electrical equipment are providing their brand of equipment with their own specialized controls. As this equipment is installed the need to bring all of the information that these manufacturers give you back to one location where you can view and analyze how your building is operating as “one system” becomes much greater. This allows the owner to optimize how his equipment is operating. We at Control Services have integrated fire alarm, security, HVAC, power and water to be managed from one central location. Allow us to assist you in your desire to manage your entire building infrastructure from one location.

Flexible service contracts

You choose the level of service and support you desire for your operators and systems

Highly qualified personnel

All service technicians and software programmers are employed by Control Services and have received extensive manufacturer certified and in-house training on multiple product lines.

Guaranteed support, around the clock

A minimum of three emergency response technicians are available 24 hours a day, 7 days a week to respond to your need. The service department has a minimum of 15 service vehicles well stocked with replacement parts ready to meet your needs.

Office and remote response capabilities

Dedicated computer lines have been installed in our office and at the homes of all on-call programmers. This gives them fast, secure access to your system data. All of our service technicians and programmers also carry laptop computers and cell phones, speeding up response times.