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When Should I Turn My Heat On?

September 30, 2024

As the seasons change and temperatures begin to drop, one common question in Kansas households is: “When should I turn on my heat?”

While it may be tempting to switch on the heat at the first sign of cooler weather, there are several factors to consider, including energy efficiency, outdoor temperatures, and the condition of your HVAC system.


In this blog, we’ll dive into the ideal time to turn on your heating system and share some helpful tips for maximizing comfort and saving energy.

An older man is adjusting a thermostat on a wall.

Understanding the Ideal Temperature to Turn On the Heat

Determining the best time to turn on your heat often comes down to the indoor temperature and your comfort level. Experts generally recommend setting your thermostat to around 68°F (20°C) when you’re home. However, turning on your heat too soon could lead to higher energy bills.


A good rule of thumb is to wait until nighttime temperatures dip to around 55°F or lower before switching to heating. This threshold helps ensure that your home remains comfortable without using too much energy too early in the season. For those using a smart thermostat, you can set specific temperature triggers that will automatically switch between heating and cooling modes based on your preferences.

Balancing Comfort and Energy Efficiency

Striking a balance between comfort and energy efficiency is key when deciding when to turn on your heat. Turning on your heating system too early can lead to higher energy costs, especially if mild fall temperatures still offer some warmth during the day. Instead, consider holding off and utilizing other methods to stay warm:


  • Wear warmer clothing around the house.
  • Use blankets or throws in common areas.
  • Take advantage of the sun’s natural heat by opening curtains during the day.


Additionally, a programmable thermostat can be a great tool for balancing comfort and energy savings. Set your thermostat to automatically lower the temperature when you’re not home or asleep and raise it when you’re active or during waking hours. This ensures that you’re only using heat when necessary.

Factors That Affect When to Turn On the Heat

Every home is different, and a variety of factors can affect when it’s time to turn on the heat. Here are some considerations that might influence your decision:


  • Home Insulation: Well-insulated homes tend to retain heat longer, which may allow you to delay turning on the heat. If your home is well-insulated, the walls, windows, and doors will help keep indoor temperatures comfortable longer without the need for heating.
  • Sunlight Exposure: Homes with large windows and southern exposure often benefit from natural sunlight, which can keep rooms warm throughout the day. If your home gets plenty of sunlight during the fall, you may not need to rely on your heating system until temperatures drop significantly.
  • Health Concerns: For homes with vulnerable populations, such as elderly individuals, young children, or people with health concerns, it may be necessary to turn on the heat sooner to ensure a safe and comfortable environment.
  • Humidity Levels: Cold air tends to be dry, and when humidity levels drop, it can make the air feel colder than it is. If you notice that your home feels chilly despite moderate temperatures, consider using a humidifier to maintain a comfortable level of moisture in the air. This can sometimes allow you to delay turning on your heating system.

HVAC Maintenance Before You Turn on the Heat

Before you switch on your heating system for the season, it’s essential to ensure that your HVAC unit is in good working order. Turning on a neglected heating system can lead to inefficiency, higher energy costs, and potential breakdowns. To avoid these issues, consider following this checklist before turning on the heat:


  • Replace air filters: Dirty filters reduce airflow and force your system to work harder, increasing energy consumption and potentially leading to system malfunctions.
  • Check vents and registers: Make sure all vents and registers are clear of obstructions, such as furniture or drapes, to ensure proper airflow throughout your home.
  • Schedule an HVAC inspection: Having a professional inspect your HVAC system before the heating season begins can help identify potential problems early on. A technician will check for issues such as leaks, faulty components, and thermostat calibration. If you’re in Lenexa, KS, or the surrounding areas, consider contacting Suburban Heating & Cooling to schedule your inspection.


By performing this simple maintenance, you’ll ensure your heating system is ready to keep your home warm and comfortable throughout the season.

Common Myths About Heating Systems

There are several myths surrounding heating systems that may influence when and how people use their heat. Let’s clear up a few:


  • Myth 1: Turn on your heat as soon as it gets cold. Many homeowners assume they should immediately turn on the heat as soon as cooler weather arrives. In reality, waiting until temperatures are consistently lower can help reduce energy costs while still maintaining comfort.
  • Myth 2: Leaving the heat on all day saves energy. Some believe that keeping the heat on all day at a steady temperature is more efficient than turning it on and off. However, allowing your home to cool down while you’re away and then reheating it when you return actually uses less energy.
  • Myth 3: Setting the thermostat higher heats your home faster. Cranking the thermostat doesn’t heat your home more quickly. Instead, it causes your system to run longer, potentially wasting energy. Set your thermostat to your desired temperature and be patient as it heats your home gradually.

Local Kansas City Area Considerations

If you live in Lenexa or the Kansas City area, knowing the local weather patterns can help you decide when to turn on your heat. Fall in Kansas City often brings fluctuating temperatures, with mild days and chilly nights. Historically, most homeowners in the area begin turning on their heat in late October or early November when nighttime temperatures consistently fall into the 40s or 50s.


Monitoring local weather forecasts can help you prepare for these seasonal transitions. Staying informed about the upcoming colder months will allow you to turn on your heat at just the right time.

Need to Get your HVAC ready for Winter? Call Us!

Turning on your heat is a decision that balances comfort, efficiency, and the unique characteristics of your home. By paying attention to outdoor temperatures, indoor comfort, and the condition of your HVAC system, you can make an informed decision that keeps your home warm without breaking the bank.


If you’re in Lenexa, KS, or the surrounding areas and need an HVAC inspection or service, don’t hesitate to contact Suburban Heating & Cooling. We offer professional maintenance services to ensure your heating system runs efficiently all season long.

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