| Air Conditioning and Refrigeration Industry Board: UK-based industry board representing air conditioning and refrigeration industries to the UK Government and European bodies. |
| Heat Pipe Technology, Inc.: Information about heat pipes and their use in dehumidification and heat recovery. Also describes company products. |
| Heating, Ventilation, Air Conditioning Documents: A collection of documents in PDF format about building design and related themes. |
| Hemmes Energietechniek: Offers a patented ventilation system with dehumidification of fresh air to reach humidity and indirect evaporative cooling to reach temperature. Dry air for pool and spa with heatpump. |
| High Performance HVAC: Provides detailed information concerning boilers, building automation, direct digital control (DDC), and HVAC preventive maintenance. |
| HPAC Engineering: Trade journal for heating, piping and air conditioning with archive of all feature articles dating back to 1992 (download on purchase). |
| HVAC Training: Offer videotapes on HVAC and other construction trades. We also offer CDROMS, books and manuals on HVAC, Electrical, Appliance Service and Plumbing. |
| International Centre for Indoor Environment and Energy: Based at Technical University of Denmark. Reports on research focusing on the effect of the indoor environment on humans, mainly thermal comfort and air quality. |
| Lars Josefsson: Steam in a Computerized World: Information for technicians and practicing engineers using marine boilers and heavy fuel oil burners. Includes data tables and shareware programs for heavy fuel oil properties calculations. |
| Numerical Modeling of Cryocoolers: Presents theory and design of cryocoolers including Stirling machines and Pulse Tubes. |
| Phase Separation with the Rotational Particle Separator: University site on the principles of phase separation with the Rotational Particle Separator. Includes a calculator for designing a separator. |
| Refrige.com: Heating, ventilation, air conditioning and refrigeration industry news and relevant solutions for environmental and energy issues. |
| Refrigeration Service Engineers Society: Training and certification in all segments of the HVAC/R industry. |
| The HVAC Tool Box: Tools and basic information for engineering HVAC systems. Includes dimensions, materials, standards and system configurations. |
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