AIRWAYS Project
   A EU Project whose objective is to provide guidance for designing and maintain energy efficient air duct systems, and bringing to light energy saving opportunities in parallel to health, safety, and comfort issues. Free source book for efficient air duct
   http://jbase150.eunet.be/

Air Movement and Control Association
   For manufacturers of air system equipment including fans, louvers, dampers, air curtains, airflow measurement stations, and acoustic attenuators. Publications, membership, certified ratings program and seminars.
   http://www.amca.org/

Chartered Institution of Building Services Engineers (CIBSE)
   UK-based institution for building heating, ventilation and air conditioning.
   http://www.cibse.org/

HPAC Engineering
   Trade journal for heating, piping and air conditioning. With archive of all feature articles dating back to 1992 (download on purchase).
   http://www.hpac.com/

HVAC Training
   Offer videotapes on HVAC and other construction trades. We also offer CDROMS, books and manuals on HVAC, Electrical, Appliance Service and Plumbing.
   http://www.hvactraining.com

Heat Pipe Technology, Inc.
   Information about heat pipes and their use in dehumidification and heat recovery. Also describes company products.
   http://www.heatpipe.com/

Heating, Ventilation, Air Conditioning Documents
   A collection of documents in PDF format about building design and related themes.
   http://tech-env.com/hvac.html

Hemmes Energietechniek
   Offers a patented ventilation system with dehumidification of fresh air to reach humidity and (in)direct evaporative cooling to reach temperature. Dry air for pool and spa with heatpump.
   http://www.hemmes.info

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.
   http://www.ie.dtu.dk/

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.
   http://www.steamesteem.com

Numerical Modeling of Cryocoolers
   A site on the theory and design of Cryocoolers, Stirling machines and Pulse Tubes.
   http://www.yutopian.com/Yuan/MCooler.html

The HVAC Tool Box
   Tools and basic information for engineering HVAC systems. Includes dimensions, materials, standards and system configurations.
   http://www.hvac-toolbox.com

Western HVACR News
   Trade publication for western United States.
   http://www.hvacrnews.com/