Energy Saving Tips for Extreme Heat

Why Energy Saving Tips During Extreme Heat Matter for Sacramento Homeowners

The best energy saving tips during extreme heat are simple, actionable steps you can start today:

1. Set your thermostat to 78°F when home, and raise it 7–10°F when away
2. Close blinds and curtains on south- and west-facing windows during the day
3. Run major appliances (dishwasher, laundry) before 4 PM or after 9 PM
4. Replace or clean your AC filter every 30–90 days
5. Use ceiling fans counterclockwise to feel up to 4°F cooler without lowering the thermostat
6. Seal air leaks around doors and windows to stop cool air from escaping
7. Pre-cool your home before peak hours (4–9 PM) when grid demand is highest

When Sacramento summer temperatures climb into the triple digits, your energy bill can spike just as fast as the mercury. For homeowners across the Greater Sacramento region, extreme heat is not just uncomfortable — it puts real strain on your cooling system, your budget, and the electrical grid all at once. The good news is that a handful of smart, low-effort habits can make a meaningful dent in your cooling costs, whether or not you have the latest equipment. In this guide, we'll walk you through the most effective strategies, from free daily habits to worthwhile long-term upgrades.

No-Cost and Low-Cost Energy Saving Tips During Extreme Heat

Staying cool in May 2026 doesn't always require a brand-new AC unit. In fact, some of the most impactful energy saving tips during extreme heat involve simply managing how heat enters your home and how you use your existing appliances. By focusing on these no-cost or low-cost adjustments, you can keep your home in Sacramento, CA, comfortable while giving your wallet a break.

Managing Heat Gain with Window Treatments

Did you know that windows can account for up to 30% of a cooling system's energy consumption due to heat gain? When the sun beats down on your home in El Dorado Hills, CA or Roseville, CA, your windows act like magnifying glasses.

To combat this, keep your blinds and curtains closed, especially on south- and west-facing windows. Blackout curtains are particularly effective as they are designed to reflect heat away from the glass. If you want to go a step further, solar screens or external awnings can prevent the sun’s rays from ever touching the window pane. These simple window layers can save you up to $140 a year on cooling costs. For more ways to prepare your home for the season, check out our guide on Looking for Some Tips to Save on Your Cooling This Summer.

Shifting Appliance Use to Off-Peak Hours

In the Sacramento Valley, peak energy demand typically occurs between 4 PM and 9 PM. This is when the grid is under the most stress and, depending on your utility plan, when electricity might be most expensive.

One of the easiest energy saving tips during extreme heat is to avoid using heat-producing appliances during these hours. Your oven, dishwasher, and clothes dryer all generate significant ambient heat that your AC then has to work to remove.

• Laundry: Wash full loads in cold water. About 90% of a washing machine's energy goes toward heating the water.
• Cooking: Use a microwave, air fryer, or outdoor grill instead of the oven.
• Dishwashing: Run the dishwasher late at night or early in the morning. Modern ENERGY STAR models save thousands of gallons of water and use very little electricity when run during off-peak times.

Optimizing Your HVAC System for Efficiency

Your air conditioner is the heart of your home’s comfort system, but during a heatwave, it is also the biggest energy consumer. Keeping it running efficiently is the difference between a system that lasts 15 years and one that breaks down during a 105-degree afternoon in Folsom, CA.

Smart Thermostat Settings for Energy Saving Tips During Extreme Heat

Setting your thermostat correctly is a balancing act. The Department of Energy recommends setting your AC to 78°F when you are home and awake. While that might sound high to some, every degree you raise the temperature can save you 3% to 5% on your cooling costs.

If you have a smart or programmable thermostat, use it to your advantage:

• The 8-Hour Rule: Raising your thermostat 7–10°F for 8 hours a day (like when you're at work) can save up to 10% a year on cooling.
• Avoid the "Blast" Myth: Don't set your thermostat to 60°F thinking it will cool the house faster; it won't. It just makes the system run longer and harder.
• Pre-Cooling: If you live in an area like Natomas, CA or Elk Grove, CA, try "pre-cooling" your home by dropping the temperature in the early morning hours and then raising it to 78°F before the 4 PM peak hits.

For a deeper dive into why your system might be struggling, see our article on Why Your AC Runs All Day During Extreme Summer Heat and learn how to ensure you are Protecting Your HVAC System During Heat Waves.

Maximizing Airflow with Fans and Ventilation

Fans don't actually cool rooms; they cool people by creating a wind chill effect. This allows you to raise your thermostat by about 4°F with no loss in comfort.

• Ceiling Fans: Ensure they are spinning counterclockwise in the summer to push air straight down. Remember to turn them off when you leave the room!
• Whole-House Fans: These are popular in Sacramento CA because our nights often cool down significantly. Running a whole-house fan in the evening pulls in that cool Delta breeze and flushes out the hot air trapped in your attic.
• Exhaust Fans: Use your bathroom and kitchen fans to remove humidity and heat after showering or cooking, but don't leave them on for more than 10-15 minutes, or you'll start sucking out the air you just paid to cool.

Understanding How to Stay Cool During Sacramento Heat Waves involves using these mechanical aids to supplement your AC, rather than relying on the compressor alone. How Dry Hot Summers Affect HVAC Performance and Lifespan is a major factor in the longevity of your equipment.

Long-Term Upgrades to Reduce Summer Energy Usage

While behavioral changes are great, sometimes the best energy saving tips during extreme heat involve upgrading the "bones" of your home. If your AC is more than 10-12 years old, it likely uses significantly more power than modern high-efficiency models.

High-Efficiency Cooling and Water Heating

When it comes time for a replacement, look for the ENERGY STAR label. Modern units are rated using the SEER2 (Seasonal Energy Efficiency Ratio 2) system. A higher SEER2 rating means the unit is more efficient at converting electricity into cooling. You can learn more about this in our post: What is a SEER2 Rating on an AC Unit.

We often recommend Choosing an AC for Triple Digit Sacramento Summers that features variable-speed technology. Unlike standard units that are either "all on" or "all off," variable-speed motors can ramp up or down to match the exact cooling needs of your home, saving a fortune in electricity. Also, consider the Standard Efficiency vs High Efficiency AC Comparison to see which fits your long-term goals.

Don't forget your water heater! Water heating accounts for about 18% of the energy consumed in a typical home. Switching to a tankless water heater or a high-efficiency heat pump water heater can significantly reduce your "hidden" summer energy loads.

Insulation and Sealing for Energy Saving Tips During Extreme Heat

Air leaking through cracks and openings can account for up to 30% of a cooling system’s energy consumption. If you are paying to cool your air, you don't want it escaping into the attic or through the front door.

• Weatherstripping: Sealing gaps around doors and windows can save up to $120 a year.
• Attic Insulation: Heat from your roof can reach 150°F or more. Proper insulation acts as a barrier, keeping that heat out of your living space.
• Duct Sealing: Leaky ducts can lose 15% of your cooled air before it even reaches your rooms. Professional duct sealing ensures the air goes where you want it.

Preparing for Grid Stress and Flex Alerts in Sacramento CA

In California, we often face "Flex Alerts" during extreme heat waves. This is a call for voluntary conservation to prevent rotating outages. Being prepared isn't just about saving money; it's about community safety and grid reliability.

If a Flex Alert is issued for your area—whether you're in Citrus Heights, CA or Rancho Cordova, CA—follow these steps:

1. Pre-cool your home: Lower your thermostat to 72-75°F in the morning.
2. The "Safety Shift": At 4 PM sharp, raise your thermostat to 78°F or higher.
3. Unplug: Turn off all unnecessary lights and unplug "phantom" loads like chargers and small appliances.
4. Stay Informed: Know where your local cooling centers are. Public libraries and community centers in Sacramento CA often serve as cooling hubs during dangerous heat events.

Many homeowners can also take advantage of SMUD Energy Rebates for Sacramento Homeowners to help offset the cost of making these efficiency upgrades.

Frequently Asked Questions about Summer Energy Savings

What is the best thermostat setting for extreme heat?

For most people, 78°F is the "sweet spot" for balancing comfort and cost. However, if it is 110°F outside, your AC may struggle to reach even 78°F. In these cases, focus on keeping the house no more than 20-25 degrees cooler than the outside temperature to avoid overworking the compressor.

Do ceiling fans actually lower the room temperature?

No. Ceiling fans move air over your skin, which helps evaporate sweat and makes you feel cooler. Because they don't actually lower the temperature of the air, leaving a fan on in an empty room is a waste of electricity.

How often should I change my AC filter in the summer?

During extreme heat, your AC runs more frequently, pulling more dust and dander through the filter. We recommend checking your filter every 30 days. A clean filter can lower your AC's energy consumption by up to 15% and prevents the system from freezing up.

Conclusion

Implementing these energy saving tips during extreme heat is the best way to ensure your home stays a sanctuary without causing your utility bills to skyrocket. From simple habits like closing your curtains to professional maintenance that keeps your system in peak condition, every little bit helps.

At Bronco Heating and Air, we are proud to serve our neighbors across the Greater Sacramento region, from Davis, CA to El Dorado Hills, CA. Our licensed, professional, and courteous technicians are dedicated to providing cost-effective solutions that keep your family comfortable all summer long.

If you're worried about your system's performance or want to explore high-efficiency upgrades, we’re here to help. Contact us today for expert AC Services and let's get your home ready for the next heatwave!