AcUnits.com

Invisible Heating Systems
Design, manufacture and install underfloor heating systems for domestic and commercial use. United Kingdom.
www.invisibleheating.co.uk/

Quality Heating Solutions
The Quality Services Group are a long established firm offering Insulation, Central Heating and Electrical Services to home and business customers throughout the UK.
www.qualityservicesgroup.com/

Flextherm Heating Floor Systems
Can be used as the primary heating system or as an additional source of warmth and comfort.
www.flextherm.com/

Good Housekeeping Institute: Space Heaters
An interactive guide to help you choose the right space heater for your needs.
magazines.ivillage.com/

The Masonry Heater Association Library
Articles about aspects of masonry heating, including energy ratings, risks, carbon monoxide dangers, all about woodsmoke, how to buy and install a wood-burning appliance.
mha-net.org/

Epinions: Space Heaters
Consumer-generated reviews, buying tips and advice, ratings, price information, and searchable in a variety of ways from price to product type.
www.epinions.com/

Heat Source Consulting
Provides information on buying equipment and mechanical information on systems.
www.heatsource.net/

James's Boiler Controller
A laptop computer is mounted on the wall in place of the thermostat to control the central heating. Pictures, instructions, and source code (GPL) are included.
www.grayfamily.org.uk/

HowStuffWorks: Heat Pump
How does a heat pump work?
www.howstuffworks.com/

ACDoctor.com: Heating Equipment Information
Information on buying and maintaining heating equipment systems.
www.acdoctor.com/