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  • ​Manual J
  • Manual D
  • ​Manual S ​
  • Manual N (commercial)

Preventative Maintenance Services:

Complete and comprehensive energy calculations including:

Warranties & Preventative Maintenance:

  • ​Energy Gauge USA
  • Energy Gauge Summit (commercial)
  • ​Engineered Duct Design

Additon Mechanical offers the following warranties on your HVAC systems and repairs:

  • A one-year warranty on parts and labor for all service work.
  • A two-year labor warranty on new residential HVAC systems, with an option to purchase an extended warranty for up to ten years.

Our Cooling Preventative Maintenance Service Includes:

  • Inspect outside condenser for proper pressures
  • Check power to outside condenser unit
  • Check electrical connections to outside condenser unit
  • Inspect outside condenser coil for cleanliness & leaks
  • Check the condition of the fan motor
  • Inspect evaporator coil for leaks
  • Check temperature difference before & after evaporator coil
  • Inspect drain pan under evaporator coil
  • Inspect primary & secondary drain lines 
  • Check cleanliness of air filters
  • Lubricate all moving parts, if necessary
  • Inspect thermostat efficiency
  • Check breakers & fuses for proper size & defects
  • Inspect amperage draw for outside condenser compressor & fan motor
  • Check contractor in outside condenser to ensure proper start-up

Annual Preventative Maintenance Program


  • Combines both our 15-point air conditioning and 26-point heating inspection plan.
  • This plan starting at $59.95

  • One Time AC Tune-Up

  • 15-point air conditioning inspection plan. Type your paragraph here.