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How to Set Your Thermostat During a California Heatwave

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Although fall is just around the corner, here in California, we’ve got excessive heat warnings in the forecast. When a heatwave hits, keeping your home comfortable can be a challenge. When temperatures hit the triple digits, it’s essential to know how to set your thermostat to stay cool and avoid straining your air conditioning system. As your trusted, local HVAC company, we’re here to help you understand the best thermostat settings during a heatwave and share some practical tips to keep your home cool and avoid the need for air conditioning service in Fresno.

Ideal Thermostat Setting During a Heatwave

One of the most common questions we get from homeowners is, “What temperature should I set my thermostat to during a heatwave?” The answer can vary depending on your comfort preferences, but the U.S. Department of Energy recommends setting your thermostat to 78°F when you’re home and need cooling. This setting strikes a balance between keeping you comfortable and conserving energy.

It’s tempting to set the thermostat much lower when it’s sweltering outside, but this can cause your air conditioner to work overtime, potentially leading to a breakdown and the need for AC repair. This not only increases your energy bills but can also shorten the lifespan of your HVAC system. By keeping the thermostat at 78°F or higher, you can avoid putting unnecessary strain on your AC system.

Understanding Your AC’s Cooling Limitations

During a heatwave, it’s essential to understand your air conditioner’s limitations. Most air conditioning systems are designed to cool your home to about 20° lower than the outdoor temperature. For instance, if it’s 102°F outside, your AC may only be able to cool your home down to around 82°F. 

Setting your thermostat lower than this can force your air conditioner to work harder than it was designed to, leading to increased energy consumption and a higher risk of breakdowns. 

Tips to Stay Cool Without Overworking Your AC

  1. Use Fans to Your Advantage: Ceiling fans and portable fans are great tools to help circulate cool air throughout your home. They create a wind-chill effect, making you feel cooler even when the temperature is slightly higher. 
  2. Keep Blinds and Curtains Closed: Sunlight streaming through windows can significantly increase the indoor temperature. Close blinds or curtains, especially on windows facing the sun, during the hottest parts of the day. 
  3. Minimize Heat-Producing Activities: Try to avoid activities that generate heat, such as using the oven, exercising, or doing laundry during the hottest parts of the day. Opt for using a microwave or cooking in the early morning or late evening.
  4. Wear Cool Clothing and Hydrate: Drinking plenty of water and wearing loose, cool clothing is essential when temperatures soar. Dehydration can lead to heat stroke and heat exhaustion.

Navigating a California heatwave can be challenging, but with the right thermostat settings and cooling strategies, you can keep your home comfortable without overworking your air conditioning system.

California Indoor Comfort: Where comfort and technology come together. Schedule an appointment today for air conditioning service in Fresno, CA.

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