Air Conditioner Not Heating? Common Problems and Solutions for Hobart Homes

As winter settles over Tasmania, there's nothing more frustrating than switching on your air conditioner—only to find it blowing cold air. If your air conditioner is not heating, you're not alone. Many Hobart homeowners face this issue during the colder months, especially with split systems, ducted air conditioning, or older HVAC setups.

We will break down common heat pump problems, highlight signs of HVAC issues, and offer practical air conditioning troubleshooting tips. If you’re unsure what’s wrong or need expert help, professional air conditioning service in Hobart is always a call away, with Sackett Services

Thermostat Settings – Check the Basics First

It might sound simple, but incorrect thermostat settings are one of the most common AC problems. Ensure your system is set to “heat” and not “cool” or “fan-only.” Double-check the temperature settings and replace the batteries if needed.

✅ Quick Fix: Set your thermostat to 22–24°C and wait a few minutes. If there’s still no warm air, it's time for deeper AC troubleshooting.

Dirty Air Filters – A Common Cause of Heating Failure

Clogged filters restrict airflow, preventing your unit from functioning efficiently. This is a frequent issue during AC maintenance checks.

✅ Solution: Clean or replace filters every 1–2 months, especially during winter when your split system not heating might be due to restricted airflow.

Outdoor Unit Icing – A Cold-Climate Problem

In colder regions like Hobart, the outdoor unit of a split or ducted air conditioning system can freeze up, making the AC not work properly. Ice build-up can block heat transfer, causing cold air to blow indoors.

❄️ Tip: Turn the unit off and allow the ice to melt naturally. If this keeps happening, it may indicate a deeper issue needing HVAC repair.

Low Refrigerant Levels – Heating Without Heat

Low refrigerant levels are another common culprit for AC not working during winter. Your unit needs the correct amount of refrigerant to transfer heat efficiently.

💡 Warning Sign: If you hear hissing sounds or the unit struggles to maintain temperature, it’s time to book an AC service call.

Electrical Issues – Blown Fuses or Tripped Breakers

Power supply issues can stop your HVAC system from heating your home. Blown fuses or a tripped circuit breaker may cause your air conditioner to stop working.

⚠️ Check First: Inspect your switchboard. If the problem recurs, call an expert for HVAC repair to prevent further damage.

Lack of Maintenance – A Preventable Problem

Many air conditioner problems are caused by neglect. Regular servicing helps prevent small issues from turning into major repairs

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🛠️ Solution: Schedule seasonal AC / heat pump maintenance, Prevention is always cheaper than cure.

When to Call a Professional

If you’ve tried the above air conditioner troubleshooting guide and your system still isn’t working,

☎️it’s time to call us at Sackett Services, we are local experts who understand common AC / heat pump problems and have experience dealing with the unique conditions of Hobart homes, you don’t have to put up with a cold home!