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.
Le 6 June 2012 By Melissa Dupuis. HSPF is an acronym that stands for âHeating Seasonal Performance Factorâ. HSPF is a rating like SEER but instead of being a rating used to measure the efficiency of a cooling system, it is a rating to measure specifically the heating efficiency of a heat pump.A heat pump has both a SEER and an HSPF rating since it can both cool and heat a building. In 2012, the highest HSPF rating on a heat pump is approximately 13. 2  If you refer to the chart below, you can save approximately $200 if you own a 9 HSPF heat pump versus owning a 7 HSPF heat pump. 3  Note that it is with a 3 ton heat pump with an average electricity rate of $0.086 (Quebec base rate is approx $0.0751).