How to Find the Right Air Conditioner Temperature in Winter


Finding the suitable temperature for your air conditioner can be difficult; you want to be warm enough to prevent discomfort, but you also don’t want to waste energy by running your heating system all day and night. So, how do you strike the right chord, and where can you find an air conditioning specialist? 

Why Is It Important To Find The Right Temperature In Winter?


The running cost of your air conditioning system is heavily reliant on the efficiency of the system and how you operate it. For example, in winter, setting your thermostat to 21-22 degrees and running the fan on auto function is ideal. This will work to bring the room to the desired temperature, and once that temperature is reached, the system will cycle off (non-inverter) or the compressor will ramp down to maintain the set temp (inverter), until the room temperature drops and it needs to start working again.  

Health Advantages

Having the room set to an excessively warm temperature can lead to humidity and poorer air quality. This can encourage fungus and mould growth in your home, and for households with Asthma sufferers, can be quite problematic

How Cold Should The Air Conditioner Be In The Winter?

In winter, the ideal setting is between 21-22 degrees. Set the thermostat to these degrees, considering your sleeping clothes and winter bedding.

Many factors, including your room’s location (north-facing rooms tend to be colder), the time of day (day ranges are bigger than night ranges), and how often you open your windows, determine the best bedroom temperature range.

Tips for Choosing the Right Winter Temperature

Setting your thermostat too high, as previously said, can cause your energy expenditures to skyrocket. If you set it too low, you may not be as comfortable or warm as you would like.

Here are tips to stay warm this winter without breaking the bank.

Secure Your Residence

Make sure your home is adequately sealed before increasing the temperature. Cold air will enter, and warm air will exit through poorly sealed spaces, preventing you from reaching your ideal temperature.

Look for drafts around doors and windows, and see if any of the seals around your air conditioner are damaged or missing—these are the most common sites where leaks occur.

Maintain Your Air Conditioner Regularly

It’s easy to overlook the need for air conditioner maintenance. You should plan a regular air conditioning service with a qualified expert to maximise efficiency.

A service specialist can clean or replace any dirty or clogged filters and inspect parts for any damage or wear that may be causing them to overheat, lowering energy efficiency and effectiveness over time.

Making sure you have an energy-efficient air conditioner will help you avoid high running costs.


In conclusion, to save on running costs and for the most efficient air conditioning system we recommend annual servicing and making sure you utilize your system settings. The ideal setting for your air conditioning system in winter is between 21-22 degrees (on heat) and having the fan on auto setting. 

As Sydney’s one-stop-shop for commercial air conditioning and residential air conditioning projects, Roberts Air Conditioning is your local trade specialist for air conditioning sales, installation, repairs, and maintenance. Call one of our air conditioning specialists today!