Ability to work in jobsite conditions that may include heat, cold, noise, vibration, fumes, dust, poor ventilation, gases, oils, wet or slippery surfaces, chemicals, and sharp objects while using appropriate personal protective equipment. Ability to perform the physical functions associated with HVAC service work, including lifting and carrying objects weighing approximately 20 to 80 pounds, climbing ladders, kneeling, crouching, crawling, reaching, pushing, and pulling.