Blog

The real Westchester summer problem isn’t the heat. It's the combination of heat, humidity, and an aging house that’s difficult to cool.

Optimal summer air conditioning requires knowing what your AC is up against.

Set Your Thermostat the Right Way for Hudson Valley Summers

The common advice is to set your AC to 78°F, but this is based on energy savings, not comfort, and it often doesn’t hold up in Hudson Valley summer humidity. When dew points rise, your AC needs to run longer to remove moisture, or the home will feel sticky even at a higher temperature.

For most homes, 74-76°F is the sweet spot. It keeps energy use reasonable while allowing your system to properly dehumidify, which is what actually makes the space feel comfortable. Keep in mind that a 78°F setting may be comfortable during the cooler spring weather.

Should You Leave Your AC On All Day or Turn It Off?

No, leaving it on at a higher setpoint, say 74-75°F, is more efficient than letting the home heat up to the mid-80s°F and forcing the system to recover. Recovery mode runs the compressor at full load for extended periods, which is harder on equipment and uses more electricity than steady-state operation.

Turning off your AC in humid summer weather is also a recipe for mold.

How Con Edison Peak Hours Should Change Your Cooling Strategy

If you’re on a Con Edison time-of-use plan, electricity is more expensive during peak afternoon hours, so a smarter approach is:

• Before Noon: Cool the home to 68-69°F
• Peak Hours: Let it rise to 74-75°F

This shifts energy use to cheaper hours while keeping your home comfortable through the hottest part of the day. In Hudson Valley summers, comfort isn’t about one number. It’s about balancing settings with humidity control and smart timing. A programmable thermostat can help homeowners manage these temperature changes.

Which Direction Should a Ceiling Fan Turn in Summer?

Set your ceiling fan to spin counterclockwise in summer. This pushes air downward, creating a direct breeze. That airflow creates a wind-chill effect, helping sweat evaporate faster and making you feel cooler even though the room temperature hasn’t changed.

Ceiling fans don’t actually lower the air temperature. They lower the perceived temperature. That means that:

A. You can often raise your thermostat a few degrees and still feel comfortable

B. You should turn the fan off when you leave the room, since it cools people, not spaces

How to Help Your AC Run More Efficiently This Summer

In Westchester’s humid summers, and with many older homes, small issues add up fast. Use these energy saving AC tips to improve efficiency.

Change the Air Filter More Often Than You Think

During peak summer, your system may run hard for 8-12 hours a day, and standard 1-inch filters can clog in 3-4 weeks, not 30 days. A clogged filter can strain the blower and even cause the evaporator coil to ice over.

This means homeowners need to replace regularly to avoid restricted airflow. Use a quality pleated filter, but don’t overdo thickness if your system isn’t designed for it.

Keep the Outdoor Condenser Unit Clear

Westchester’s tree cover means seed pods, like those from the native cottonwood, and can quickly block airflow. The best way to combat the foliage is by:

• Maintaining at least 2 feet of clearance around the unit
• Gently rinsing the coil with a garden hose in early summer
• Avoiding pressure washers, since they can damage the fins

Close Blinds on South- and West-Facing Windows Before Noon

Solar heat gain is one of the fastest ways to overwhelm your system. South and west exposures can add 3-5°F of indoor heat by afternoon. Close blinds before the sun hits, not after rooms heat up.

Check for Duct Leakage in Older Homes

Many Westchester homes have retrofitted ductwork running through attics or walls. Leaks and connected ducts can waste 20-30% of cooled air.

You'll know if this is happening to you if one or two rooms never cool properly, no matter what you do. Fixing this typically requires professional sealing and inspection.

When Summer Tips Aren't Enough—Signs Your AC Needs Service

If you’ve followed all the right summer AC tips, fresh filter, clear condenser, blinds closed, fans running, and your home still won’t cool below 78°F during a Westchester summer heatwave, the issue is probably mechanical. Call for service if you notice:

• Warm Air From Vents: The system is running, but not actually cooling
• Ice on Refrigerant Lines or the Indoor Coil: Often caused by airflow or refrigerant issues
• Short-Cycling: The system turns on and off frequently without completing a full cooling cycle
• Compressor Not Kicking On: You hear the fan, but no true cooling is happening

There are signs your system needs a professional AC tune-up or repair to restore proper operation. T.Webber’s HVAC team is available 24/7 across Westchester and the Hudson Valley. Call (845) 443-4815 or schedule service online.

For whole-home airflow improvements, ask about air duct cleaning, ongoing maintenance, and check our special offers to stay ahead of the next heatwave.