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Split Systems best temp for winter time



Best Temperature to Set Split System Air Conditioner in Winter Time


As the winter season approaches, many homeowners wonder about the ideal temperature to set their split system air conditioner. Finding the right balance between comfort and energy efficiency is crucial to ensure a cozy indoor environment without incurring excessive heating costs. In this article, we will explore the best temperature range for setting your split system air conditioner during the winter months. By optimizing your thermostat settings, you can create a warm and inviting atmosphere while maximizing energy savings.

Understanding Split System Air Conditioners

A split system air conditioner consists of two main components: an indoor unit and an outdoor unit. The indoor unit is responsible for cooling and heating the air within your home, while the outdoor unit dissipates heat or cold air. These systems are known for their energy efficiency, quiet operation, and ability to provide both cooling and heating throughout the year. They also use around 1/3 – 1/4 of the power a normal element heater uses saving you a lot of money.

Importance of Optimizing Winter Temperature Settings

Setting the right temperature on your split system air conditioner during winter is essential for several reasons. Firstly, it helps maintain a comfortable indoor environment where you can relax and enjoy your time at home. Secondly, it plays a crucial role in energy efficiency, ensuring that you don’t waste unnecessary power and incur high utility bills. By finding the optimal temperature range, you can strike a balance between comfort and cost-effectiveness.

Recommended Temperature Range for Winter Months

The best temperature range for a split system air conditioner during winter is typically between 18°C and 21°C . Within this range, you can experience warmth and comfort without overworking your system or consuming excess energy. It’s important to note that personal preferences may vary, so adjusting the temperature within this range to suit your comfort level is recommended.

Factors to Consider When Setting the Temperature

When determining the ideal temperature for your split system air conditioner, it’s crucial to consider various factors:

  1. Climate: The climate in your region affects the temperature requirements. If you live in a colder area, you may need to set a slightly higher temperature to ensure adequate warmth.
  2. Insulation: The insulation of your home plays a significant role in heat retention. Well-insulated homes require less heating, allowing you to set a lower temperature without compromising comfort.
  3. Occupancy: The number of occupants in your home also affects the optimal temperature setting. More people generate body heat, which can influence the overall warmth level.
  4. Nighttime vs. Daytime: Adjusting the temperature based on your activities and the time of day can optimize energy consumption. Lower the temperature at night or when you’re away to conserve energy.

Tips for Efficient Heating in Winter

To maximize the efficiency of your split system air conditioner during the winter months, consider the following tips:

  1. Smart Thermostat: Invest in a programmable or smart thermostat that allows you to schedule temperature adjustments throughout the day. This way, you can optimize comfort and energy savings automatically.
  2. Zoning System: If your split system air conditioner supports zoning, take advantage of it. Zoning allows you to heat specific areas of your home while keeping others at a lower temperature, reducing energy waste.
  3. Sunlight Utilization: During the day, open curtains and blinds on south-facing windows to let sunlight in. Sunlight can provide natural warmth, reducing the reliance on your heating system.
  4. Insulation Upgrades: Improve the insulation in your home by sealing air leaks, adding weatherstripping, and insulating walls and attics. This enhances heat retention and reduces the workload on your heating system.
  5. Regular Maintenance: Schedule regular maintenance for your split system air conditioner. Clean or replace filters, check for leaks, and ensure proper airflow. A well-maintained system operates more efficiently.

Common Misconceptions about Winter Heating

There are a few common misconceptions regarding winter heating and split system air conditioners. Let’s address them:

  1. Higher Temperature Equals Faster Heating: Setting the temperature higher than necessary does not heat your home faster. It only makes your system work harder and consume more energy.
  2. Constant Temperature is More Efficient: Constantly keeping the same temperature when you’re not at home or during sleep hours is inefficient. Lowering the temperature during these times helps save energy.
  3. Closing Vents Saves Energy: Closing vents in unused rooms may seem like a good idea, but it can disrupt the airflow in your system, leading to inefficiency and potential damage.

Importance of Regular Maintenance

Regular maintenance is crucial to ensure the optimal performance of your split system air conditioner. It is recommended to have a professional inspection at least once a year to clean the unit, check for any issues, and ensure proper functionality. By keeping your system well-maintained, you can extend its lifespan and maintain efficient heating throughout the winter.


Setting the best temperature for your split system air conditioner during winter is a balance between comfort and energy efficiency. By following the recommended temperature range and considering various factors, you can create a cozy indoor environment while keeping your energy costs under control. Remember to implement tips for efficient heating, address common misconceptions, and prioritize regular maintenance to ensure optimal performance.

FAQs (Frequently Asked Questions)

  1. What temperature should I set my split system air conditioner to during winter? The recommended temperature range is between 18°C and 21°C (64°F and 72°F) for a comfortable and energy-efficient winter setting.
  2. Can I save energy by setting a lower temperature on my split system air conditioner during winter? Yes, lowering the temperature when you’re away or during sleep hours can help save energy and reduce heating costs.
  3. Do split system air conditioners provide both cooling and heating? Yes, split system air conditioners are designed to provide both cooling and heating, making them versatile for year-round comfort.
  4. Is it necessary to schedule regular maintenance for my split system air conditioner? Yes, regular maintenance is important to keep your system operating efficiently and to identify any potential issues before they worsen.
  5. Can I use my split system air conditioner for heating in extremely cold climates? While split system air conditioners can provide heating in cold climates, it’s recommended to have a backup heating system in extremely low temperatures.