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Service is needed before the start of each cooling season and each heating season. Different maintenance procedures are performed for your cooling system than for your heating system. Because your comfort system works so hard during the year, a number of components need adjustment, calibration, lubrication, and cleaning each year. Your system will still work for a time without maintenance, but not as efficiently.

During an inspection, a number of items are checked. Some of the checks are to identify and stop small problems that could become big problems. Some are to verify safe operation.

When it comes to your family you want dependable air conditioning and heating systems that provide you with value as well as comfort. You can expect both from McWilliams and Son because we’re not comfortable until you are! Ask about the Advantage Plan.

Advantage Plan Features and benefits
  • Priority Service
  • Semi Annual Tune-ups
  • 15% Repair Discount
  • Visual Plumbing Inspection
  • Special Member Pricing
  • $0 Diagnostic Fee
advantage plan $12.99 per month
additional units $6.99 per month
filter add-on $11.99 per month
why should i do my routine maintenance on my system?

Just like changing the oil in your car, you need to get your unit tuned up twice a year! By having a company provide documented tune ups each year, you protect your warranty and may help prevent costly and untimely breakdowns.

visual plumbing inspection during heating tune-up

Water Heater: Visually Inspect for signs of corrosion,
leaks, and overall safety.

Toilets: Visually Inspect Toilets to ensure there is no leaking water causing high utility bills. Visually Inspect Faucets, Hoses, and Sinks.

ac tune-ups

Inspect and Clean Outside Condensing Coil
restore heat transfer efficiency and reduce utility cost

Clean and Clear Drain Lines & Traps
reduce the risk of water back up & possible water damage

Test Refrigerant Charge
ensure optimum levels leading to lower utility usage and extend compressor life

Clean Burner Assembly
improve combustion, reduce heat waste

Tune Burners
for more efficient burns, saving energy

Clean Ignition Assembly
ensure reliable operation on demand

Clean & Inspect Furnace Heat Section
ensure safe operation and the absence of cracks from metal fatigue

Verify Flue Draft
ensure dangerous gas by products are properly venting to the outdoors and flue pipes are free of obstruction

Inspect Flue Pipe
ensure no corrosion is present which can lead to cracks and the introduction of dangerous fumes into your home

Test Crankcase Heaters
ensure proper compressor protection

Inspect & Adjust Blower Assembly
extend motor life, improve air quality, and reduce sound

HEAT PUMP ONLY: Clean Outside Condensing Coil to restore heat transfer efficiency and reduce utility cost

both tune-ups

Clean Condensate Drains and Traps
prevent water damage and the potential for mold formation

Calibrate Thermostat
for accurate control and to prevent the system from running longer than necessary to increase utility usage

Test Capacitors
ensure reliable operation and continued compressor and motor prevention

Inspect & Test Controls & Safeties
keep operating costs low and prevent failures

Adjust Fan Switch
prevent wasted energy and excess sound levels from nuisance cycling

Adjust Balancing Dampers to improve comfort

Inspect Filtration System Filters
reduce energy use, reduce compressor strain, improve indoor air quality, and improve comfort

Check Air Flow
ensure proper air flow across the coil for proper humidity removal and reliable operation

Visually Inspect Ductwork
identify obvious leaks, which reduce system efficiency and increase utility expense

Tighten Electrical Connections
ensure uninterrupted system operation

Measure & Record Voltage & Amperage
identify baseline operating conditions

Inspect Inside Evaporator Coil
ensure heat transfer efficiency, reduce utility cost, and improve air quality

Vacuum and Wipe Return
prevent dust build up from entering unit

why should i do my routine maintenance on my system?

At McWIlliams and Son Heating and Air Conditioning, we’re proud of our years of service to the East Texas area, and look forward to helping you with your air conditioning and heating needs. We’re pleased to serve both residential and commercial customers. Our team is prepared to help you with sales, service and installation of the comfort system that is ideal for your home or business. We are trained to work on any make or model. Whether it’s a new installation or routine service, our factory-trained technicians provide expertise your comfort depends on. When your in need, remember to ask about the Advantage program.

We make it our priority to run our company by these values:

  • Family first
  • Hire the best team members
  • Honesty and integrity
  • The highest quality service- delivered in the most professional and personal way
no overtime charges, 7am - 7pm, 7 days a week
What are you waiting for?
Sign up today.


  • This field is for validation purposes and should be left unchanged.

If your system breaks down this season after we have completed your precision tune-up, we will refund the cost of the tune-up toward your repair.