David Appelhof

I serviced and repaired all hvac equipment and boilers in all National Guard Buildings,

• Increased longevity of HVAC systems by performing preventive maintenance.
• Connected heating or air conditioning equipment to water, fuel or refrigerant sources to form complete circuits.
• Assembled air ducts, pipes, discharge valves and flues to central heating and cooling equipment and boilers.
• Utilized pressure gauges and soap-and-water solutions to test pipe and tubing joints for leaks.
• Maintained environmental conditions by rebuilding and replacing faulty components.
• Discussed heating and cooling system malfunctions with customers to isolate problems and verify corrected malfunctions.
• Operated portable metal-working tools or [Type] welding equipment to fabricate, assemble and install ductwork and chassis parts.
• Installed bypass dampers, low voltage wiring, smoke detectors, split systems and package units in over [Number] commercial or residential buildings per [Timeframe].
• Located and marked pipe positions, hole passages and duct connections in walls and floors through [Action] and [Action].
• Used [Type] and [Type] measuring and testing instruments to troubleshoot breakdowns, perform preventive maintenance and repair malfunctioning HVAC systems and components.
• Tested automatic, programmable and wireless thermostats in residential or commercial buildings to decrease energy usage [Number]%.
• Consulted with customers to trace malfunctions and identify root causes, completing speedy repairs to return full performance levels.
• Completed thorough inspections of supporting electrical systems to assess continuity and locate faults.
• Optimized performance by balancing systems and calibrating controls.
• Installed components to improve HVAC system performance.
• Laid out and installed electrical connections and controls as part of [Type] systems.
• Repaired, replaced and serviced both residential and commercial HVAC equipment, components and wiring.
• Worked on both home and business units for maintenance, repairs and new installations.
• Used technical skills, tools and techniques like soldering to repair parts.
• Kept accurate records of work activities, time, materials, and faults on work orders.
• Worked in strict compliance with applicable OSHA regulations and safety requirements.
• Completed knowledgeable repairs and maintenance actions on less common systems such as geothermal and ductless arrangements.

• Increased longevity of HVAC systems by performing preventive maintenance.
• Connected heating or air conditioning equipment to water, fuel or refrigerant sources to form complete circuits.
• Assembled air ducts, pipes, discharge valves and flues to central heating and cooling equipment.
• Removed old equipment from customers' homes and cleaned up areas to prepare for new installations. Also maintained boilers