There are many sources of information on geothermal heating and cooling, but I would start here: http://en.wikipedia.org/wiki/Geothermal_heating You can also find videos about it on youtube.
You have to manually select the heating, and cooling mode located on your thermostat.
If you are looking for information on buying a new heating and cooling system for your home I would visit: www.searshomeservices.com/central-heating-air/improve
Their are several websites that can help you find more information on Geothermal Heating and Cooling such as Wikipedia, energysavers.com and geoexchange.org.
The best information on geothermal heating and cooling will come from your local heating and cooling professional, who will evaluate your situation and help determine what product is right for you. There are many websites that offer general information on geothermal heating and cooling as well, including Earth Comfort, Geo Comfort and Energy Star.
Consultation of a licensed heating/cooling contractor is advisable when considering separating the heating and cooling units. The Guide to Heating and Air Conditioning is an excellent resource for information on heating/cooling repair work.
One can find information on heating and cooling repair companies by looking in the local phone book. Most of the time there will be advertisements in the phone book and in the mail that offer these services.
Without knowing where you are located, I can answer generally but not specifically. Home Depot (located almost everywhere) specializes in heating and cooling systems starting as low as $299.
yes for example heating and cooling and stoves
cooling
No, heating and cooling does not effect the strength of a glass
only if you have an auto switchover thermostat