Motors and Armatures (d.b.a. MARS) is a family-owned and operated supplier of quality motors, components, and service/installation parts for the HVAC-R industry. The company distributes its own extensive MARS and JARD branded aftermarket replacement products, as well as the original equipment components of leading manufacturers.

Since 1962, Mars Air Systems has been a renowned developer of air curtain technology to enable buildings to be more comfortable, sanitary friendly and energy efficient. With an expansive product line that offers solutions across every industry, count on Mars to solve problems and advance atmospheric conditions that save money and create safer working environments.

Mart Haller are the worldwide exporters and purchasing agents for all ACR, Appliance and U.S. manufactured equipment.

Martin Brower is an innovative global supply chain leader providing end-to-end solutions for restaurant chains across 18 countries. They are a company with innovation at the core, where ingenuity is continually encouraged and imagination is carefully nurtured. It is a multi-billion dollar company, fueled by constant innovation, enduring customer loyalty and smart acquisitions.

Martin Systems, Inc. is a Wisconsin based systems integrator specializing in integrated security, HVAC systems, fire protection, and life safety. They provide HVAC Systems, Commercial Security, Office Security, Alarm Systems, Camera Surveillance, Access Control, Home Security, Fire Protection, Home Automation, Security Systems, Burglar Alarm, Door Access Control, Fire Alarm, Life Safety, Fire Alarm Inspections, Fire Protection, CCTV solutions.

Distributor of manufacturers for HVAC industry requirements among others

Marvair is an ISO 9001:2015 certified diversified manufacturer of self-contained heating, ventilation and air conditioning products for telecommunication buildings, school classrooms, commercial/industrial structures and for the marine industry. Marvair falls under the Airxcel banner.

At Mascot, they are experts in indoor air quality, and offer a complete range of technical and mechanical services to keep retail, restaurant, and commercial HVAC systems running at peak performance – including both 24-hour emergency service and normally scheduled, routine maintenance services.

Mascot Mechanical, LLC has been providing outstanding air conditioning and heating service for more than 10 years in DFW Metroplex.

Mason Industries Inc. manufactures a complete line of vibration control products, including pads, mountings, hangers, rubber and stainless steel expansion joints for piping, seismic and shock control products.

MasTec Network Solutions is fully qualified and staffed to handle upgrades and maintenance on HVAC, generators, power plants and batteries. MasTec Network Solutions has performed tens of thousands of site & shelter inventories, site inspections and tower mappings.

Since 1999, Master Plumbers Heating and Cooling of NC has proudly served residential and commercial properties. As a 100% local, family-owned business, they are committed to providing reliable, high-quality plumbing & HVAC services.

Master-Bilt Products are commercial refrigeration manufacturers. Their product line also includes merchandisers, walk-in cooler and freezers, refrigeration systems, reach-ins, prep tables and ice cream cabinets.

For over 36 years Mastercool has been supplying professional quality air conditioning service tools and equipment. As one of the fastest growing companies in this market, our primary goal is to drive New Product Innovation and Technologies to make the every day work of the HVAC/R technician easier. Complete line of HVACR service and installation tools.

Maxair has a qualified and experienced team of professional engineers, project managers and field technicians that assure all aspects of heating, cooling and plumbing systems. They make sure the systems are optimized for maximum reliability, up-time and efficiency, while minimizing the associated energy consumption.

Gas pressure regulators; electronic gas flame modulation systems, shut-off valves, manual gas ball valves and gas combination controls.

Heating and cooling products for residential and light commercial industries, including the 25.5 SEER iQ Drive air conditioner and heat pump.

Rainlike Water physical water treatment for improving water quality, water conservation, energy efficiency, biosecurity and improving operations.

McSuite contains all features for complete HVAC design. Based on an AutoCAD platform offering compatibility with .dwg file format. Features: Graphical interface with EnergyPlus, design the following systems: Radiant heating and cooling, hydronic-thermal system sizing, fire protection, mechanical room, plumbing, snow and ice melting, heat loss, cooling loads.

McCarty Bros. Inc. has been in the business of maintaining HVAC systems in the Chicagoland area for over 70 years. They do know a thing or two about it. They have service maintenance customers who have been with us for over 50 years.

Manufacturer of round, flat oval, and rectangular HVAC ductwork and related products for commercial, institutional, and industrial applications.

McGowan's Heating and Air Conditioning is a full service heating and air conditioning contractor in Jacksonville, Florida, USA. They are the #1 air conditioning contractor in the greater Jacksonville area.

McKinstry is a US-based energy efficient systems and advanced renewable energy systems firm. From new construction and ongoing operations to adaptive reuse, energy retrofits and advanced renewable energy systems, McKinstry provides a single point of accountability across the entire building lifecycle. Services offered include Energy Performance Contracting, Energy Services, Smart Buildings, Renewable Energy, Zero Energy and Energy Audit.

McNally’s Heating and Cooling has over 25 years of experience serving St. Charles IL and the surrounding community. They are the repair, installation, and maintenance partner of choice for Kane County residents and they’re available 24/7 to service the HVAC needs of the customers.

For two decades in Colorado, Measurlogic has designed & manufactured an extensive range of AC & DC electrical submeters under the DTS brand product offerings also include supporting AC & DC Current Sensors, and accurate solutions in Maximum Demand Control and Power Conditioning.

The Mechanical Contractors Association of America (MCAA) serves the unique needs of approximately 2,600 firms involved in heating, air conditioning, refrigeration, plumbing, piping, and mechanical service.

Mechanical Sales, Inc. is an Independent Manufacturers’ Representative for Commercial and Industrial - Heating, Ventilating, and Air-Conditioning (HVAC) systems. They provide HVAC applications expertise to system design professionals, generating custom equipment selections, delivering superior installation contractor support, providing professional factory authorized system start-up and warranty support.

MSCA is a renowned organization for HVACR contractors, providing education, marketing, and labor/management services to assure its contractor members deliver quality performance, value and expertise for all building system needs.

At Mechanical Services Inc., they provide solutions like heating, cooling, indoor air quality, etc, and is based out of the USA.

Medford Wellington, the business continuity company, is committed to keeping commercial enterprises running uninterrupted – from restaurants and retail spaces to laboratories and hospitals. Its ecosystem of experts, work in partnership with business owners and facility managers to fix real-time issues as well as plan, construct and manage cutting-edge systems to optimize performance and reduce energy costs.