Stay Safe, Cool, and Efficient with Ray’s Heating & Air
How to Set Your Thermostat and Run Your AC During a Heat Wave
During extreme heat, staying comfortable is only part of the equation—your air conditioner becomes a tool for safety. For Pennsylvania homeowners, the combination of high humidity, soaring temperatures, and rising heat index values makes efficient cooling critical.
At Ray’s Heating & Air, we help families in Bucks County, Montgomery County, and the Main Line manage high temperatures with smarter air conditioning system use, energy-saving strategies, and reliable repair and maintenance support.
What Temperature Should You Set Your Thermostat?
The U.S. Department of Energy recommends setting your AC system to 78°F while you're home. This balances comfort with energy efficiency, especially on hot days when demand on the grid surges.
If you're away, increase the thermostat to 85°F. This setting helps control humidity while reducing your energy consumption and extending your system’s life.
A programmable or smart thermostat makes this easy by automatically adjusting the temperature based on your daily routine.
Upgrade to a smart thermostat today.
Why Your AC Is Essential for Health and Safety
During air quality alerts, heat waves, or a Code Orange warning, a functioning AC unit can protect you from serious health risks. Without proper cooling, your core body temperature can rise to dangerous levels, especially in a hot environment with poor ventilation.
Heat stress, heat rash, and heat stroke can escalate quickly—particularly for those with a medical condition, children, and older adults. Reliable access to cool air can prevent these conditions and reduce emergency room visits.
That’s why Ray’s Heating & Air treats AC failures as urgent calls. If your system stops delivering cold air during a heat event, contact us for emergency repair.
Smart AC Tips for Heat Waves
1. Pre-Cool Your Home in the Early Morning
Run your air conditioning system during the early morning hours to cool your home before temperatures rise. This helps your home retain coolness while reducing system strain in the hottest part of the day.
2. Don’t Overcool
Setting your thermostat below 70°F won’t cool your space faster. It simply increases energy use and adds wear and tear to your AC unit. Stick to 75–78°F and use fans for extra comfort.
3. Block Excess Heat
Reduce excess heat from entering by:
- Closing blinds and curtains
- Installing UV-blocking window film
- Using outdoor shade on your split system’s outdoor unit
Learn how to maintain your outdoor unit.
4. Use Fans to Move Cool Air
Ceiling and box fans help circulate cool air, letting you raise your thermostat without losing comfort. Set ceiling fans counterclockwise during summer.
5. Get a Seasonal Tune-Up
A tune-up ensures your ac system works at peak performance. It includes a check on refrigerant levels, air filters, coil cleaning, and electrical inspection.
Schedule your AC maintenance now.
How to Stay Cool Without AC
Knowing how to stay cool without AC is essential if your unit breaks down or you're in a space without central cooling. Here's what to do:
- Use fans with ice or cool water nearby to create a cooling breeze
- Take cold showers and apply damp cloths to your neck, wrists, or feet
- Close windows and curtains to trap coolness and block hot air
- Drink water often and stay hydrated, even if you don't feel thirsty
- Avoid physical activities in peak heat hours
- Visit cooling centers or public libraries during extreme heat events
If your AC isn’t working, Ray’s Heating & Air offers 24/7 emergency repairs throughout Bucks and Montgomery County.
How Often Should I Replace My Air Filter?
A clogged air filter restricts airflow, increases energy costs, and contributes to uneven cooling. During summer, replace your filter every 30 days, especially if you have pets, allergies, or frequent AC use.
Should I Close Vents in Unused Rooms?
No. Closing vents can cause pressure build-up in the ducts, reduce system efficiency, and potentially damage your air conditioning system. Consider a ductless mini split system or a professionally zoned solution instead.
Frequently Asked Questions
What’s the most efficient thermostat setting during a heat wave in Pennsylvania?
Set it to 78°F when home, and 85°F when away. This helps manage AC energy use while staying safe.
How often should I change my AC filter during summer in PA?
Inspect monthly and replace every 30 days to maintain airflow and prevent cooling issues.
Should I use a fan with my AC to save energy?
Yes. Fans improve airflow and let you raise the thermostat slightly without feeling warmer.
Can I cool my home without AC during a heat wave?
Yes. Use fans, cool water, limit heat sources, and stay in shaded or public air-conditioned spaces.
Does turning the AC colder cool your home faster?
No. It only causes your system to run longer. Instead, pre-cool your home early in the day.
Final Thoughts
Heat waves in Pennsylvania are becoming more frequent and intense. But with the right strategy, you can keep your home comfortable, control costs, and avoid health emergencies.
Ray’s Heating & Air is here to help with:
- Smart thermostat upgrades
- Seasonal AC maintenance
- Emergency repairs
- High-efficiency system installations
- Indoor air quality solutions
Serving Yardley, Bensalem, Langhorne, Doylestown, and surrounding areas
📞 Call (267) 485-6068 or book service online now.
