Why Does My Energy Bill Spike During Spring?

You open your energy bill and do a double-take. The weather has been mild, the heat is barely running, and yet the numbers on that statement look anything but reasonable. It’s a frustrating situation, and you’re not imagining it. Spring can actually put real strain on your HVAC system, even when temperatures feel comfortable outside.

At Van Drunen Heating & Air Conditioning, we’ve been helping homeowners throughout South Cook County and Northwest Indiana care for their HVAC systems for over 50 years. Here’s what can drive up your energy bill during the spring months:

• Constant cycling between heating and cooling
• Rising humidity that forces your AC to work harder
• Thermostat settings that aren’t optimized
• Conditioned air escaping through open windows and doors
• Neglected maintenance during winter

Is it Inefficient for My HVAC to Keep Switching Between Heating and Cooling?

Spring weather is unpredictable with chilly mornings, warm afternoons, and everything in between. If your thermostat is set to keep a tight temperature range, your HVAC system might constantly switch between heating and cooling. This back-and-forth uses way more energy than running in a single mode for longer periods. Every time your system starts up, it needs a surge of energy to power the compressor and blower motor, which drives up energy usage.

Here’s how to cut back on that energy waste:

• Loosen your thermostat range so your system doesn’t react to every little temperature change.
• Get a smart or programmable thermostat to manage temperature changes more efficiently throughout the day.
• Schedule a professional check if your system cycles too often or struggles to maintain consistent temperatures.

How Does Humidity Affect My Air Conditioner’s Energy Efficiency?

Spring also means rising humidity, which may be another reason your energy bill is climbing. Your air conditioner doesn’t just cool the air; it also removes moisture. When humidity levels go up, your AC has to work harder, even if the outside temperature seems mild. Running longer to remove excess moisture means using more energy.

Here’s how to take some of the load off your system:

• Use bathroom and kitchen exhaust fans to keep extra moisture out of the house.
• Close blinds or curtains in the afternoon to reduce heat and humidity buildup.
• Stay on top of HVAC maintenance so your system can handle humidity more efficiently.
• Consider adding a whole-home dehumidifier if indoor humidity is a persistent issue.

Are My Thermostat Settings Driving Up My Energy Bills?

Another common culprit for higher spring energy bills? Thermostat settings that don’t match the season’s ups and downs. Spring temperatures can swing a lot, but if your thermostat stays at the same setting all day, it might be running when it doesn’t need to. For example, cooling an empty house in the afternoon or trying to make big adjustments later in the day wastes energy fast.

Upgrading to a smart thermostat can make a huge difference. Here’s why:

• It learns your routine and automatically adjusts settings, so you’re not heating or cooling an empty house.
• You stay in control with the ability to change the temperature remotely from your phone.
• It tracks your energy use so you can see where to cut back.

How Much Conditioned Air Do I Lose When Windows and Doors Are Open?

Spring is when we all want fresh air, so it’s tempting to leave windows or doors open. But when conditioned air escapes, your HVAC system has to work overtime to maintain the temperature you’ve set. Studies show that opening just one window can increase the air change rate (how quickly indoor air is replaced by outdoor air) by as much as 1.3 times per hour. Opening multiple windows can increase it up to 2.8 times per hour. Even small leaks around closed windows and doors let air seep out, forcing your system to run longer.

Here’s how to keep that air where it belongs:

• Limit how long doors and windows stay open when your system is running.
• Check weatherstripping around windows and doors for damage or wear.
• Seal leaks with caulk or updated weather seals.
• Close exterior doors during heating or cooling cycles.

How Can AC Maintenance Improve Energy Efficiency?

Skipping AC maintenance after a long winter is another big reason energy bills spike in the spring. Dust and debris build up in your system, filters get clogged, and outdoor units collect dirt and leaves. When airflow is restricted or parts aren’t running efficiently, your AC has to work harder.

Here’s what you can do to get your system running smoothly:

• Replace your air filters. A clogged filter makes it harder for your system to pull air through. This is an easy, low-cost fix.
• Clear your outdoor unit. Remove dirt, leaves, and debris, and make sure there’s at least two feet of clearance around the condenser for proper airflow.
• Schedule professional AC maintenance. A technician can clean internal components, check refrigerant levels, and spot inefficiencies before they become expensive problems.

Get Your HVAC System Ready Before Summer Hits

High spring energy bills are common. Constant heating and cooling, rising humidity, thermostat habits, air leaks, and deferred maintenance all play a role. Fortunately, all of these are fixable.

If you’d like to get your system inspected and tuned up before summer arrives, contact our team at Van Drunen Heating & Air Conditioning today. Our certified technicians will assess your system, address any inefficiencies, and help you head into the warmer months with lower bills and a system that’s ready to perform.