You can purchase a geothermal heat pump from a number of places. This includes good large homeowner stores, and specialist heating suppliers. You can also try Amazon.
A heat pump thermostat.
There are a few things you need to consider before purchasing a new heat pump. Should you buy a heat pump or should you choose a better choice, for example a furnace? What size heat pump will you need to buy? How efficient do you want your heat pump to be?
The average cost to install a residential geothermal system is 10-30k depending on the type of heat pump you buy and the extent of underground piping. In 2009-2010 the US government is providing tax credits to help offset the cost of installation. To get an exact installation cost look up a local geothermal expert.
I do not know of any jurisdiction in which a license would be required for a heat pump.
You don't have to buy fuel to heat the water, unlike coal and other non-renewable plants.
Alegria is a good reseller if you want to buy a heat pump for your swimming pool (in Belgium).
There are a lot of resources online where you can obtain information on geothermal heating and cooling. One such website is http://geothermal-pa.com/. In reviewing this site, I noticed a wealth of information regarding "green" ways to heat a building as well as various articles on this same topic of geothermal heating and cooling.
Many online sellers offer various types of Carrier heat pump, with or without heater, with various BTU ratings. It is possible to buy direct from Carrier's own website, while ebay offers similar products second-hand for around $900.
A programmable thermostat works fine with a heat pump. Just remember that a heat pump does not heat as fast as a furnace because of the lower BTU ratings so do not set the thermostat as far back as you normally would. Also make sure to buy a thermostat that has heat pump terminals.
Heat pumps are an economical way to provide clean heating AND cooling of a home.
Sure, just look on craigslist. Everything is on there.
You can buy a new Trane Heat Pump online from Cross Heating & Cooling, Overcashier & Horst HTG, D.A. Mechanical or Reckingers Heating & Cooling. Alternatively, you can purchase this item from eBay.