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Unlimited Controls and our partner manufacturers provide the controls and instrumentation solutions that make us a leader in our industry.


VRF Refrigerant Leak
Detection Solutions for
Occupied Confined Space.


  • Hotel Rooms
  • Dorms
  • Senior Care
  • Hospitals
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Schneider Electric

Develops connected technologies and solutions to manage energy and process in ways that are safe, reliable, efficient and sustainable.

  • Smart Thermostats
  • Controls Valves & Actuators
  • VFDs & Soft Starts
  • Power Meters
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Honeywell Thermal Solutions

Manufacturer of Industrial Burners, and Combustion Controls.

  • Burner & Flame Safeguard Controls
  • Eclipse Burners
  • Maxon Burner and Gas Valves
  • Kromschroder Combustion Controls
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Siemens / SCC Inc.

The Siemens Building and Combustion Technologies is a leader for safe and secure, energy-efficient and environment-friendly buildings.

  • Burner Controls and Safety shutoff valves
  • Pneumatic Valves & Actuators
  • Variable Speed Drives
  • Damper actuators
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Is the global market leader in the development, production, and sales of field devices for controlling HVAC systems.

  • Control Valves
  • Damper Actuators
  • Fire & Smoke Actuators
  • Economizers
  • Energy Valves
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As part of the Schneider Electric business, Eurotherm is a leading global supplier of Industrial Automation and process control, measurement and data management solutions and services.

  • PID Process Controllers
  • Process Indicators
  • Digital Data Recorders
  • Actuatos
  • Power Controllers
  • PLC & HMIs
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Is a leader manufacturer of Process Control Valves for the industrial sector of hydraulics and heating, specialized in the production of components for the regulation and interception of fluids and gases.

  • Ball & Butterfly Valves
  • Electric & Pneumatic Actuators
  • Cryogenic Valves
  • Check Valves
  • Cage valves
  • Valve Positioner
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Nor'East Controls

Nor'East Controls' highly respected line of globe valves and controls—manufactured first by Honeywell and then by DeZurik has been a favorite for multiple applications since the 1950’s.

  • Pneumatic Actuators
  • Globe Valves
  • Cage Guide Valves
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Bray Commercial

Bray Commercial provides automated butterfly valves, ball valves, and pressure independent valves to the commercial HVAC market.

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Leading manufacturer of flame safeguard controls and burner management systems for commercial and industrial applications throughout the world.

  • Burner controls & Flame safeguard
  • Integrated discrete flame scanners
  • Boiler efficiency system
  • Igniters
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Eagle Controls

Supply one of the most comprehensive ranges of Large Digital LED Displays available, with an estimate of over 900 bespoke and standard Displays.

  • Production LED Displays
  • Counters & Totalizer Displays
  • Temperature Displays
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GC Valves

GC Valves designs and manufactures world class solenoid valves to meet the rigors of today’s most demanding application.

  • Direct Acting Solenoid Valves
  • Piloted Diaphragm
  • Zero Differential Piloted Diaphragm
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Bell & Gossett

World Leader in the manufacturing of Boiler feed & Condensate packages, hydronic pumps & circulators, packaged pumping systems, steam specialties, HVAC flow control, air separation, heat exchangers & expansion tanks.

  • Pumps & Circulators
  • Boiler feed & condensate pumping packages
  • Expansion Tanks
  • Heat Exchangers
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U.S Manufactured temperature sensors, components and complete assemblies.

  • RTDs
  • Thermocouples
  • Thermowells
  • Connection heads
  • Temperature transmitters
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Midco International

Midco is the world's leading manufacturer of power burners. We create durable, top-of-the-line products for a wide range of residential, commercial, and industrial applications.

  • Gas Fired Burner
  • Commercial & Industrial burners
  • Process Burners
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Crown Engineering

One of the leading manufacturers of electrodes, flame rods, probes and terminal connectors for ignition related heating applications for oil and gas fired equipment.

  • Ignitors
  • Flame Rods
  • Probes
  • Terminal Connectors
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United Process Controls

UPC offers Solutions that significantly lower fuel consumption, maintenance costs and emissions. UPC products are used in high temperature environments such as furnaces, boilers, incinerators, power plants, fired heaters, kilns, etc. .

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Viconics is a manufacturer of Communicating and Non-communicating HVAC Temperature Controllers and Digital Thermostats targeted to the HVAC industry.

  • Room Temperature Controllers
  • Wireless Gateways
  • Sensor
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Automation Components Inc. (ACI) is a manufacturer & distributor of sensors for the HVAC Industry.

HVAC Sensor for:

  • Temperature
  • Pressure
  • Humidity
  • Current
  • Gas
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REOTEMP is a globally recognized ISO 9001-2008 manufacturer of temperature and pressure instrumentation. REOTEMP sells through a mature distribution network that reaches all 50 states and 30 countries worldwide.

  • Pressure Transmitters
  • Pressure Gauges
  • Temperature Sensors
  • Bi-metal Thermometers
  • Diaphragm Seals
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Honeywell Analytics

Gas detection from standalone units to fully engineered, multi-point systems, all offering cost-effective regulatory compliance for commercial and industrial application.

  • Gas Monitoring Systems
  • Gas Sensors
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Manufacturer of gas regulators and control valves for the residential, commercial, and industrial market.

  • Gas Regulators
  • Modulating Valves
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McDonnell & Miller

Premier Manufacturer of Boiler Controls, flow switches, liquid level controls, valves & water feeders for commercial & process applications.

  • Low Water Cutoff
  • Flow Switches
  • Water Feeders
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Designed and manufactured in the United States, DualDraw downdraft tables, downdraft booths, and other specialized air filtration equipment are used across the globe to protect operators, and eliminate cross contamination.

  • Air Filtration System
  • DownDraft Tables
  • DownDraft Booths
  • Walk-in Clean station Units
  • Wet Dust Collectors
Learn More


Founded in 1988 with the mission to becoming an international reference point for gas detection. Today, thanks to the development of sensors that have been continually more reliable, the systematic use of microprocessor technology, meeting European standards and the quality procedures adopted, Sensitron is ranked among the European market leaders.

LS Electric

Electric Power, Automation & Drive Solutions


Manufacturer of high quality Pressure gauges, switches, transducers & transmitters.

Spirax Sarco

Manufactures product for every part of your steam system.

  • Steam Traps
  • Steam Regulators
  • Safety Valves

Saginaw Controls

Saginaw Controls specializes in manufacturing both standard stock and custom designed enclosures as well as precision sheet metal fabrications.


Kunkle Valve industrial and commercial safety and relief valves are made for steam, air, gas, liquid, cryogenic, and nonhazardous gas applications.


Watlow designs and manufactures industrial heaters, temperature sensors, controllers - all of the components of a electric thermal system.

Testo, Inc.

Is a world leader in the design, development and manufacture of portable test and measurement instrumentation.


With manufacturing facilities in the USA and Ireland, Bacharach, Inc. is a world leader in the design, manufacture, and service of advanced equipment for the measurement and detection of gases and liquids.

Endress + Hauser

Industrial process measurement and automation.

  • Flow Transmitters
  • Pressure Transmitters
  • Level Transmitters
  • Temperature Transmitters
  • Analytics


Founded in 1967, Setra Systems, Inc. is a leading designer and manufacturer of pressure, acceleration, and weight sensing devices, HVAC, and Industrial Sensors:

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