Maddox Residential and Commercial Services is a third-generation, family owned and operated company. It all began in 1937 as Maddox Air Conditioning, when heating and air was nowhere near as reliable, affordable and efficient as it is today.

Manchester Tank & Equipment Co. has been a trusted industry leader in the design and manufacture of steel and aluminum low-pressure DOT cylinders and ASME pressure vessels for the storage and transport of propane, chemicals, compressed air and other industrial applications since 1946.

Marathon Motors manufactures thousands of products including single and three phase AC, NEMA and IEC, low and medium voltage, PMDC, and radial and axial flux motors.

Markel Products is a renowned provider of commercial, industrial, residential electric heating equipment, industrial ventilation, controls, industrial lighting, portable air conditioning and portable evaporative cooling solutions.

MarketAir Inc. are renowned US-based manufacturers, importers and distributors of installation components and accessories for the installation of ductless, ducted and VRF Air Conditioner systems.

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.

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.

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

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.

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

At Metal Form Manufacturing Company their capabilities include the analysis, distribution and manufacturing of a wide range of Air Control, Sound Control and Evaporative Cooling Products for Commercial, Industrial, Institutional and Residential applications.

Manufacturers of the innovative Metraloop expansion joint for thermal/seismic movement, Cablesphere, SDF and VaneFlex flow conditioning connectors, Metraflex makes a variety of engineered piping products.

Metro Express Service has been serving the North Texas area with pride as one of the residential and light commercial HVAC service companies in the Dallas Fort Worth area ever since.

Michall Daimion Heating & Air Conditioning, Inc. specializes in duct work fabrication, indoor air quality, diagnostics, service, repairs, and routine maintenance.

Representing quality HVAC/R manufacturers in Illinois, Indiana, Wisconsin, Minnesota, Dakotas and the UP of Michigan. They also offer warehousing services in 42,000 square foot warehouse in Chicago.

Mitchell & Sons Heating & Cooling Inc. is a family-owned and operated business. Originating in Des Moines, Iowa around 1900, it branched out to Ottumwa, Iowa in 1946. Handed down from generation to generation, they have been a mainstay in Ottumwa and Southeast Iowa ever since.

Minority owned firm that has been doing business in Indianapolis area since 1978 with 30 years of experience in refrigeration, heating and air conditioning installation, repair and service.

Since 1973 they have grown into a leading provider of HVAC solutions for Business and Industry in the North Texas area. They take pride in listening to their customers and providing a "Single Source of Responsibility" utilizing the most cost-effective, value-added equipment solutions available.

Mitsubishi Electric Trane HVAC US LLC (METUS) is a provider of ductless and VRF systems in the United States and Latin America region. METUS provides innovative products, systems and solutions capable of cooling and heating any application from a home to a large commercial building.

At MMT Heating & Cooling, they provide solutions like Heating and Cooling, Air Conditioning, Indoor Air Quality, Thermostats, etc, and is based out of the USA.

Modern Air Solutions provides the skilled and dedicated services to maintain a healthier, more comfortable indoor residential or commercial space while saving you time and money. The company provides solutions like Air Conditioner Services, Heating Service, Indoor Air Quality, etc, and is based out of the USA.

Modern Day Comfort, Inc. is into Heating and Cooling solutions and is based out of the USA.

Montgomery HVAC Service Company, LLC, is a family-owned and operated air conditioning and heating company based out of the USA.

MMI Climate Solutions is dedicated to providing the highest standards of indoor comfort through products, service, education, and integrity for their customers. One can count on them to provide with a system and solution that fits unique needs, and since they've installed many systems in this area they have earned a reputation for doing the job right the first time.

For more than 40 years, the reliable professionals at Mooneyham Heating & Air Conditioning Inc have provided quality heating and air conditioning service at affordable prices to homeowners and business owners.

Moore Heat & Air, LLC is a family-owned and operated business serving the Cabot community since 1994, providing quality installations and service of heating and air conditioning systems on the customers’ terms backed by education and integrity.

At MR Heating & Air Conditioning in Mt Washington, they'll provide advice on the purchase of a new air conditioning and heating system, help maintain the existing system, or provide quality HVAC repair services to keep comfortable all year round.

Mr. Breeze can provide new heating systems, heating system repairs, furnace replacements, furnace repairs, air conditioner replacements, air conditioner repairs, as well as tune-ups and seasonal maintenance.

Munier Heating and Cooling, LLC. provides heating and cooling solutions and is based out of the USA.

Muse Heating & Air Conditioning provides solutions like Cooling, Heating, Indoor Air Quality, Thermostats, etc, and is based out of the USA.