HVAC Service and Repair

Furnace Service

Corner Stone Heating & Cooling Inc. believes in precision furnace and A/C tune-ups. Our precision furnace tune-up procedure includes, as needed:

  • Inspect and tighten all electrical connections and terminals.
  • Remove, clean, and adjust main gas burners on gas systems only.
  • Remove, clean, and adjust ignition/pilot assembly on gas systems only.
  • Thoroughly brush and vacuum clean the heat exchanger(s) and combustion chambers.
  • Inspect heat-exchanger(s) & combustion chambers for cracks, rusting, or problem areas.
  • Vacuum out blower compartment; return airdrop, and surrounding area. (No duct cleaning).
  • Remove, clean and adjust oil nozzle assembly on oil systems only.
  • Replace nozzle and oil filter on an oil system only.
  • Replace oil pump screen on oil system only.
  • Inspect the flue assembly and test flue gas drafting mechanism.
  • Test and inspect all furnace safety controls.
  • Test, record and adjust gas pressure.
  • Replace or clean standard air filters.
  • Lubricate all fan motors and all moving parts.
  • Adjust all dampers and set proper blower speed(s).
  • Test the thermostat. Measure and record heating system output. Inspect and test thermocouple output as well as pilot safety switch.
  • Measure and record electrical voltage, amperage, and component resistance.
  • Inspect and test all system transformers, relays, contactors and controls. Measure performance.
  • Repair minor air leaks in plenum and return air drop.
  • Perform a complete and thorough, room-by-room electronic carbon monoxide check of the entire house.
  • Advise customer on other ways to reduce energy consumption, improve safety and enhance comfort.

Benefits of a precision furnace tune-up include:

  • Lower utility bills
  • Extended equipment life
  • Fewer repairs, breakdowns, and improved system reliability
  • Peace of mind for you and your family
  • Increased heating capacity

Air Conditioning Service

Corner Stone Heating & Cooling Inc. believes in precision furnace and A/C tune-ups. Our precision A/C tune-up procedure includes, as needed:

  • Chemically clean and thoroughly wash condenser coil(s).
  • Chemically clean and thoroughly wash evaporator coil.
  • Wash and level condensing unit got proper motor and bearing wear.
  • Lubricate motor and fan bearings as well as other moving parts as necessary.
  • Clean and inspect evaporator coil and drain pan when readily accessible.
  • Clean and inspect condensate drain lines and fittings.
  • Test the thermostat.
  • Adjust and thoroughly clean blower motor and fan assembly as needed.
  • Inspect, tighten and test all electrical wire, connectors and terminals.
  • Inspect all cooling system electrical wires, connectors, and terminals.
  • Test system starting and running capacitors.
  • Test all controls, switches, relays, transformers, contactors, motors and fans.
  • Measure starting and running amperes, line voltage, and control voltage.
  • Test system-starting capabilities.
  • Test system for proper airflow and air delivery.
  • Inspect and adjust all safety controls.
  • Monitor refrigerant (Freon) pressures and temperatures.
  • Test and record super-heat and sub-cooling. Compare with factory specifications.
  • Adjust Freon metering control device per factory/manufacturers recommendations.
  • Add up to 1 lb of refrigerant, if needed.
  • Test and measure air-conditioning system for proper production and capacity.
  • Monitor fan motors and compressor operating temperatures.
  • Complete and present full written report.

Benefits of a precision air-conditioning tune-up include:

  • Lower utility bills by reducing energy consumption and waste
  • Extended equipment life
  • Peace of mind for you and your family
  • Fewer repairs and improved system reliability
  • Increased cooling capacity and efficiency

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