MidWest Materials is a Steel Service Center providing coated, hot rolled, HRPO and cold rolled steel in coil, sheet or plate. Processing includes stretch leveling, corrective leveling and more.

Midwest Mechanical Solutions solves problems through applied HVAC solutions. It develops and maintains relationships with Commercial and Industrial Building Owners, Consulting Engineers & Contractors.

Mike Mulligan Refrigerants provides HVAC Contractors with customizable R-22 Refrigerant Buyback Programs and Direct Refrigerant Sales.

Mitch Craig Heating & Cooling are the renowned Clarksville AC repair and AC installation service professionals. As trusted heating & air conditioner contractors in Clarksville, IN, they have the tools, equipment, and experience to keep the equipment running smoothly all year long in the field of heating and air conditioning. They also service New Albany, Sellersburg, Floyds Knobs, and Louisville, KY, for their furnace repair needs as well!

Mitsubishi Electric Automation, Inc. is a U.S. affiliate company of Mitsubishi Electric Corporation. It offers a broad product portfolio including programmable automation controllers (PAC), programmable logic controllers (PLC), human-machine interfaces (HMI), variable frequency drives (VFD), servo amplifiers and motors, control software, computerized numerical controllers (CNC), motion controllers, robots, low-voltage power distribution products,

Mitsubishi Heavy Industries, Ltd. delivers innovative and integrated solutions across a wide range of industries from commercial aviation and transportation to power plants and gas turbines, and from machinery and infrastructure to integrated defense and space systems.

Modine Manufacturing Co. provides custom design and manufactured plate fin and tube heat exchangers, micro-channel, all aluminum coils, tubular heat exchangers, fluid and unit coolers, and air cooled condensers.

Mor Air Inc. offers AC repair in North Hollywood, San Fernando Valley, and Los Angeles regions in California, USA. They aim to be recognized as trusted experts in heating, cooling, and air quality. Their services include air conditioner repair, furnace repair, and heater repair. They handle residential and commercial HVAC needs, including AC plumbing, heating, and installation. Trust them for all heating and air conditioning solutions.

Mortex Products manufactures quality heating and cooling equipment to homes and businesses. They provide evaporator coils, fan coils, air handlers, custom coils. Chillers scroll and screw to 100 tons, AHU Horizontal, Vertical Modular and Rooftop to 20 tons.

MOS Mechanical offers a complete building, building maintenance and building renovation service. The company's building, maintenance and renovation division can always deliver the best quality, design, and value for money end product, be it domestic, commercial or just a simple revamp of a room.

Mouser Electronics is a global authorized distributor of semiconductors and electronic components for over 1,100 manufacturer brands. They specialize in the rapid introduction of new products and technologies for design engineers and buyers. Their extensive product offering includes semiconductors, interconnects, passives, and electromechanical components.

Mueller Industries provides its customers with the best products, services, and support in the HVAC/R industry. They offer one of the most complete lines of HVAC and Refrigeration products available from a single source.

Mulcahy Company is a manufacturer representative principally serving the heating, air conditioning, and plumbing industries. Mulcahy represents companies who manufacture a variety of products required by these industries, such as centrifugal pumps, boilers, cooling towers, filtration systems, heat exchangers, tanks, piping systems, valves, instruments, motor control devices, solar energy and much more.

Napco-International manufactures and supplies high quality industrial grade heating elements and supporting components to the industrial markets. They provide electric heating elements and accessory products such as HVAC heating elements for electric furnaces, heat pumps, air handlers and many more.

The Occupational Safety and Health Act of 1970 established NIOSH as a research agency focused on the study of worker safety and health, and empowering employers and workers to create safe and healthy workplaces. NIOSH is part of the U.S. Centers for Disease Control and Prevention, in the U.S. Department of Health and Human Services. It has the mandate to assure “every man and woman in the Nation is safe and in healthy working conditions.

National Pump Company manufactures a complete line of vertical lineshaft turbine, submersible, and booster pumps for the agricultural, municipal, petroleum, and industrial-commercial markets. They are a major fluid pumping solutions provider in the global water and energy markets through collaboration and innovation.

Nelumbo is commercializing a new platform of structural materials. The company’s current focus is on developing improved heat exchangers for the HVAC market.

NexCore is a commercial heating, ventilation, and air conditioning (HVAC) system services provider focused on maintenance, repair, and replacement work for its clients. In addition to its core HVAC capabilities, the company offers electrical, plumbing, construction, and building automation services, providing customers with a single-source solution for facility maintenance and repair needs.

NIBCO INC. is a worldwide provider of flow control solutions for commercial, industrial, and institutional construction as well as residential and fire protection markets.

NJR Home Services is a trusted HVAC company dedicated to providing top-notch home comfort solutions. Specializing in furnace installation, air conditioning installation, and water heater installation, they cater to various heating and cooling needs. They offer customers home comfort solutions, including equipment sales and installations; lease and purchase of solar; and Comfort Service Plans, including heating, cooling, water heating.

Nor-Cal Products has manufactured the highest quality vacuum chambers, components and engineered subsystems used in semiconductor, flat panel display, industrial coating, LED lighting, energy and research equipment.

As a manufacturer of duct products for environmental filtration systems, Nordfab Ducting are proud to help supply clean air for workers and equipment in workplaces of all sizes and types. Their ducting is an integral part of dust, mist, and fume collection systems around the world.

Noritz offers a full line of tankless water heaters and high efficiency combination boilers to meet the hot water demands of residential and commercial applications. Noritz supports its products with a national network of skilled representatives and employees who are committed to providing the finest products and services to its communities by helping consumers.

Nu-Calgon markets and distributes a complete line of specialty chemical products for the HVACR aftermarket. They provide water treatment, sealants, specialty and service chemicals, coil cleaners, system flush solvents, refrigeration oil, vacuum pump oil, ice machine treatment, indoor air quality.

Oakwood Homes, a Berkshire Hathaway company, has always built, sourced and stayed true to what's local. By leveraging resources and partners right here at home, they can deliver true luxury in homes at every price point - for people in every stage of life.

With the Occupational Safety and Health Act of 1970, Congress created the Occupational Safety and Health Administration (OSHA) to ensure safe and healthful working conditions for workers by setting and enforcing standards and by providing training, outreach, education and assistance. The OSH Act covers most private sector employers and their workers, in addition to some public sector employers and workers in the 50 states and certain territories.

OEI is a second generation, family-owned and operated business offering air conditioning and heating services to home or business. Rely on their certified technicians for advice, sales, repairs, and installations.

For more than half a century, OJ Electronics have been designing and developing electronic controls for electric underfloor heating and HVAC Controls & Drives. They give access to deep application knowledge and innovative power and help differentiate themselves in the market. They are here to help build their customers’ business.

Oklahoma Chiller Corporation is a commercial and industrial HVAC company with offices in Tulsa and Oklahoma City. In addition to mechanical and HVAC services, Oklahoma Chiller offers building automation services and equipment rental services.

A family owned business, Olson Comfort Services takes pride in offering the highest quality heating and cooling services. They are licensed, bonded, and insured.