AAF International's clean air products and systems offer the most comprehensive clean air solutions available in the world. Its products are the industry benchmarks for quality and performance, from simple roughing filters to air pollution control, to gas containment removal, to the highest efficiency filters used in the most stringent clean environments.

At ADCO Inc. Heating and Air Conditioning we repair and service quality installation on heating, air conditioners, heat pumps, geothermal heat pumps, area systems, radiant flooring heating, and moisture control systems.

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air quality products online.

Since 1886, Browning products have been globally renowned in V-belt drives and helical shaft mounted speed reducers. Browning products also include a broad range of gearing, bearings and sprockets.

Halton Group is a family-owned, global technology pioneer in indoor air solutions for demanding spaces. They enable safe, comfortable, and productive indoor environments that are energy-efficient and comply with sustainable principles.

ISCO Industries is a global customized piping and other HVAC solutions provider based in Louisville, Kentucky, USA. ISCO stocks and sells a wide variety of piping materials and provides solutions for various environmental, geothermal systems, industrial, landfill, mining, municipal, nuclear, waterworks and culvert-lining applications worldwide.

Koch Filter is a manufacturer of air filtration products for commercial, industrial, hospital, gas turbine and paint filtration applications. Koch Filter is recognized globally for its premier brand of high efficiency air filtration products.

Phelps Heating and Cooling, Inc. is locally owned and operated and the heating and air conditioning service company in Hodgenville, KY, which means that users get the assurance and the relationship of a local business

Since 1935, Sealmaster bearings are the industry's preferred bearing product, known for its premium-quality mounted ball-bearing line, as well as its mounted roller bearings.