Midsummer Cooling System Maintenance

We’re halfway through the summer months, and warm weather continues to be an everyday part of our lives. Is your cooling system running as efficiently as it could be? An annual cleaning and inspection is important, but failure to continually maintain your system throughout the cooling season can lead to energy inefficiency and even equipment failure. At this halfway point of the season, now is the perfect time to make sure your system is running smoothly.

Your Checklist for Preventive Maintenance Measures

We recommend consulting with a qualified professional who can provide regular maintenance for your cooling system. Here's a checklist of items to look for that will keep your system operating at peak efficiency for the remainder of the summer:

• Adjust settings. Check the settings on programmable thermostats or energy management controls and adjust them to current space conditioning needs and occupancy schedules.
• Strike the right balance. Adjust dampers and vents to make sure your system is balanced properly.
• Lend an ear. Listen to the system operate for a few minutes and determine the cause of any unusual sounds.
• Keep filters clean. Check air filters monthly and replace them according to manufacturer guidelines. If you haven’t switched out your filters yet since the beginning of summer – now’s the time!
• Maintain oil pressure and temperature. Examine instrumentation to ensure the oil pressure and temperature match the manufacturer's specifications.
• Confirm compressor performance. Check for unusual compressor operation, including continuous running or frequent stopping and starting.
• Balance belts. Inspect the tension and alignment of all belts and adjust as needed.
• Examine economizers and dampers. Determine if the air conditioning economizer works as designed and repair faulty dampers.
• Look for leaks. Check for and repair refrigerant and oil leaks around equipment seals, pipe joints, valves and other instrumentation. Examine refrigerant levels and adjust if necessary.
• Maintain motors. Check motors and fan belt drives to make sure they're properly lubricated.
• Scrutinize shades. Inspect window treatments to make sure they're being used correctly to block out solar heat gain, especially in areas with varying occupancy.
• Monitor mold and mildew. Look for evidence of mold and mildew near windows or in corners of exterior walls. Indoor humidity levels of 70% and higher, combined with temperatures above 70°F, provide an ideal environment for mold growth.

Neglecting your cooling system can be quite costly, but performing regular checks on it is not only an easy way to remain energy efficient, but to also ensure that you’re getting the most bang for your buck. With regular preventive maintenance, you can keep your system operating at peak performance for the rest of the summer.