Friedrich Air Conditioners & Heat Pumps
AirConditioner.com powered by Genie Air Conditioning and Heating is the largest distributor of window & wall air conditioners in the United States. We carry Portable air conditioners, Mini Splits, Central Air Conditioners, Ptac Air Conditioners, etc.
http://www.genieac.com

Allweiler

http://www.allweiler.de/

Wikipedia: Heat Pump
Free encyclopedia article covering the technology basics. Addresses background, thermodynamic aspects for different types of heat pumps.
http://en.wikipedia.org/wiki/Heat_pumps

Graham Corporation
A leader in designing and building vacuum and heat transfer equipment for process industries throughout the world, Graham is also a worldwide leader in vacuum technology. Graham's principal markets include the chemical, petrochemical, petroleum refining, and electric power generating industries, including cogeneration and geothermal plants.
http://www.graham-mfg.com/

Enertran Inc
Canada. Specializes in energy transfer equipment and systems. Includes geothermal heating and cooling units, such as dehumidifiers, drying machines, heat pumps, and heat recovery products.
http://www.enertran.ca

TRACO
Yugoslavia. Specializes in production of heat exchangers, non-motor pumps, pressure regulation equipment, and sub-distribution units for supply of air conditioning, heat, and hotwater in residential and commercial buildings.
http://www.traco.co.yu

ICE Energy Ltd.
Ground Source Heat Pumps; Heat Pumps; geothermal;
http://www.iceenergy.co.uk/

Ningbo Link Electric Co.,Ltd.
Manufacturer of self-priming plastic pumps with filters such as natatorium pumps,seawater pumps,garden pumps,chemistry pumps and energy-saving pumps. Chinese Company.
http://chinawebs.com/link/

Webster Fuel Pumps & Valves
Webster is a leading manufacturer of fuel oil pumps and valves for the oil heat industry.
http://www.websterfuelpumps.com/

Little Giant Pumps
Supplies pond pumps, water pumps, submersible water fountain pumps, wholesale sump and chemical pumps, aquarium pumps, sewage waste water pumps.
http://www.littlegiant.com/