Install, service, or repair air purification systems, such as specialized filters or ultraviolet (UV) light purification systems; pipe systems to support alternative energy-fueled systems, such as geothermal heating or cooling systems; self-contained/hybrid ground/air source heat pumps to minimize carbon-based energy consumption and reduce carbon emissions. The employee is regularly expected to follow instructions, listen, speak, reach with hands and arms, carry heavy objects, stretch, twist, stoop, crouch, kneel or crawl, climb ladders, and work in tight spaces; therefore, good physical strength, manual dexterity, multilimbed coordination, and stamina is required.