Which DNA Testing Company Should I Use? The answer, as in many areas of genealogy, is it depends. Because different people test with different companies, many of which maintain their own databases of tested individuals, you will achieve the greatest chance of useful matches by either being tested, or sharing your DNA results, with as many companies as possible.
Cogeneration / Combined heat and Power (CHP) Cogeneration (cogen) through combined heat and power (CHP) is the simultaneous production of electricity with the recovery and utilisation heat.
A geothermal heat pump (GHP) is all electric, like your heat strips. Your heat strips make one unit of heat for one unit of electricity. A GHP actually pumps heat out of the Earth. So, for one unit of electricity, it will pump 3 to 5 units of heat into your home.