A/C & Heating Systems

Air Conditioning & Heating Systems
Service & Maintenance

Count on AAA Williams Service for your heating and cooling needs. We are licensed and certified at the Federal level for proper refrigerant usage and refrigeration by the Refrigeration Service Engineers Society. AAA Williams Service is licensed as a mechanical contractor in St. Charles County (License #M2652B). The refrigerant recovery equipment used by AAA Williams Service is EPA approved.

Preseason preventative maintenance check

AAA Williams Service offers preseason preventive maintenance checks on Heating and Air Conditioning Systems (HVAC). Let us help you stay comfortable all year long. The proven quality service you have come to know and trust from AAA Williams Service is combined with a money-saving maintenance package. Our maintenance checks are convenient, bring peace of mind, plus offer special benefits for our valued customers. Maintenance checks often catch any minor issues before they become major problems.

The AAA Williams Service HVAC maintenance checks offer participating customers a number of advantages:

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Convenience of Prescheduled Seasonal Maintenance -
We will call you to schedule your seasonal maintenance check during a predetermined period. No need for you to bother with remembering to call each season.

Peace of Mind -
We work to assure your peace of mind by taking every preventative measure possible to fend off future costly problems. By maintaining equipment quality and performance, equipment longevity is extended, a safe and healthy environment is provided for, the chance of breakdown is reduced, utility and repair costs are decreased, and energy use is decreased.

Priority Service Scheduling -
When you call for air conditioning or heating service in between your planned maintenance check visits, you will receive preferential priority service over individuals who do not have preseason maintenance checks with AAA Williams Service. There will be no service call charge - only parts and labor charges would apply.

Discounts on Repair Parts -
As an AAA Williams Service HVAC preseason maintenance check participant, you are entitled to a 10% discount on all replacement repair parts for your air conditioning and heating systems. (This excludes Freon, compressors, A-coils, condensing units, furnaces, electronic air cleaners, and humidifiers).

Service You Can Trust -
As always, count on AAA Williams Service for fair, dependable, and quality service. AAA Williams Service's seasonal maintenance checks are in-depth and intensive.

A/C preseason check

Our air conditioning system spring preseason maintenance checks include:
  • Check filter condition, change if homeowner provides filter at time of maintenance inspection or clean if washable type
  • Blow dust from wall thermostat and check operation of same
  • Check condition of cooling coil blower motor -- check bearings and shaft, fan blade, check motor windings with megohmmeter, oil motor where applicable, blow dirt from motor with compressed air, and check noise level
  • Check compressor windings with an electronic megohmmeter for condition of internal motor windings &  compressor terminal connections
  • Check refrigerant pressures by method of superheat or subcooling
  • Electronically analyze all run & start capacitors for 10% + - specifications
  • Check condition of contacts in all relays, contactors, timers, protectors, thermostats, & overloads; check condition of wiring for same
  • Check Air Conditioning System components amp draw
  • Check disconnect box, wirewhip, & armaflex
  • Check if condensing unit is level
  • Check electrical connections
  • Check condition of blower motor – check bearings & shaft, blower wheel, check motor windings with megohmmeter, oil motor where applicable, oil blower bearings where applicable, blow dirt from motor with compressed air & check noise level
  • Check fuse condition & size
  • Flush coil with low pressure wash
  • Flush condensate hose
  • Chemically clean evaporator coil where accessible through inspection cover
  • Check air flow & temperature at register
  • Shut off humidifier (where applicable)

Heat preseason check

Our heating system fall preseason maintenance checks include:

Electric:

  • Check elements, fuses, safeties, & sequencers
  • Check filter condition, change if homeowner provides filter at time of maintenance inspection or clean if washable type
  • Check humidifier & humidifier pads, check operation of same & set for winter (where applicable)
  • Check air flow
  • Check furnace noise level
  • Check plenum temperature
  • Oil all motors (where applicable)
  • Check wall thermostat (heat mode)
  • Check system cycle   
Natural Gas:
  • Clean burners & pilot (where applicable)
  • Light pilot (where applicable)
  • Check heat exchanger
  • Check thermocouple (where applicable)
  • Check electronic ignition (where applicable)
  • Check all safeties, check limit control, & check fan control
  • Check flue and/or venting
  • Check for gas leaks at furnace with electronic leak detector
  • Test for Carbon Monoxide
  • Check filter condition, change if homeowner provides filter at time of maintenance inspection or clean if washable type
  • Check humidifier & humidifier pads, check operation of same & set for winter
  • Check air flow
  • Check plenum temperature
  • Check furnace noise level
  • Oil all motors (where applicable)
  • Check wall thermostat (heat mode)
  • Check system cycle
Let us help you stay comfortable all year long.
Call for an appointment!
(636) 272-5000, (636) 625-8313, or (636) 828-5610
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