Oikos
- Describing the differences between electric radiant heat and hydronic radiant heat systems.
- http://www.oikos.com/esb/48/radiantheat.html

Radiant Design Institute
- Illustrations and detailed tutorials for installation of radiant floor heating.
- http://www.radiantdesigninstitute.com/

Warmup Underfloor Heating
- Warmup manufactures electric underfloor heatering. The DIY undertile and electric radiant heating is taped to the floor prior to tiling.
- http://www.warmup.com/

Installing electric in floor heating
- An article on how to choose and install in floor heating.
- http://www.flooringguide.com/how-to/related/rp001.php3

Hydronic Underfloor Heating
- An article in Backwoods Home Magazine by Michael Hackleman, explaining hydronic floor heating. Includes diagrams.
- http://www.backwoodshome.com/articles/hackleman64.html