You can use warmth trapped within the earth's crust to heat your house. Installers bury pipes underground, then fill those pipes with water. The water absorbs the earth's heat, warms up and can then be pumped - as warm air - into your house.
SolarRoofHook's Low Profile QuickBOLT with Microflashing™ is the industry's affordable, UL Certified Asphalt Shingle mounting system. The Microflashing™ is compressed by the collar on the bolt to create a water-tight seal. With an installation time of less than one minute, the Low Profile QuickBOLT allows installers to complete more jobs.