Heat Exchange Applied Technology
Quality Finned Tube products for Heat Exchangers, Boilers, HVAC, Economizers and Fin Fan Cooelrs.
http://www.heat-voss.com

Heat Pipe Technology, Inc.
Manufacturer of heat pipes for dehumidification and heat recovery
http://www.heatpipe.com/

Ab & Co.
Industrial Boilers and Process Air Heat Exchangers
http://www.abco.dk/

HANOL Technology Inc.
design service for heat transfer equipments and related systems, including various type of heat exchangers, heat recovery steam generators, waste heat boilers, economizers, condensers, heaters, coolers
http://www.hanoltech.com

National Heat Exchange Cleaning Corp.
National Heat Exchange markets a newly patented technology for cleaning the shell-side of heat exchangers and coolers, restoring their peak efficiency.
http://www.nationalheatexchange.com

Heat Technology Products
Heat Technology Products is a Manufacturers' Representative and Stocking Distributor engaged in sales of Boilers, Boiler Room Equipment, Heat Exchangers, Pre-Insulated Chimneys, Pre-Insulated Underground Pipe, Chillers, Cooling Towers, Process Analyzers, and All Related Instrumentation Controls.
http://www.heattech.com

Geothermal Heat Pump Energy - How It Works
Geothermal Heat Pumps by Sunteq/Enviroteq
http://www.geothermalheatpump.com/how.htm

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

Industrial Chemical Cleaning Consulting Services
Find the best solutions for chemical cleaning problems here.
http://www.hireanexpert.netfirms.com/

Heatran
Korea. Specializes in design of heat transfer equipment and related systems, including heat exchangers, heat recovery steam generators, waste heat boilers, economizers, condensers, heaters, and coolers.
http://www.heatran.com/