Installing Air Conditioning in a House Without Ducts

Is It Possible to Install Air Conditioning Without Ducts?

Not every home has ductwork, and that shouldn’t stop you from enjoying a cool and comfortable environment, especially during the hot weather in Melbourne. Whether you’re living in an older property or renovating your home, installing an air conditioner without ducts is completely possible. There are multiple solutions available that don’t require tearing down walls or making major structural changes.

Best Air Conditioning Options for Homes Without Ducts

Traditional ducted air conditioning isn’t the only option for cooling a house. Here are the best alternatives for homes without existing ductwork.

  • Split System Air Conditioners: These are the most popular choice for non-ducted homes. A split system consists of an indoor unit and an outdoor compressor, delivering powerful cooling without the need for ducts.
  • Multi-Split Systems: If you need to cool multiple rooms, a multi-split system allows you to connect several indoor units to a single outdoor unit.
  • Portable Air Conditioners: These don’t require permanent installation and can be moved from room to room. However, they usually need a window for venting hot air.
  • Window Air Conditioners: These compact units are installed in a window frame or a specially created wall opening and are ideal for smaller spaces.
  • Hydronic Cooling Systems: If you’re looking for an energy-efficient alternative, hydronic cooling circulates chilled water through panels or underfloor pipes without ducts.

Why Choose a Ductless Air Conditioning System?

Installing a ductless air conditioning system has several benefits, making it a practical solution for many Melbourne homeowners. Here’s why it’s worth considering:

  • Faster Installation: Since there’s no need for ducts, installation is quicker and less invasive.
  • Energy Efficiency: Split systems and multi-split units are designed to cool individual rooms, reducing wasted energy.
  • Cost-Effective: Ductwork installation can be expensive, whereas ductless systems offer a more affordable alternative.
  • Flexible Placement: Indoor units can be mounted on walls, ceilings, or even floor-standing for optimal air distribution.

How to Install Air Conditioning Without Ducts

Installing an air conditioner without ducts takes a lot of time and careful planning. Here’s a step-by-step guide to help you through the process.

Step 1: Choosing the Right Air Conditioning System

The first step is selecting the right system based on your home size and cooling requirements. A split system is ideal for single-room cooling, while a multi-split is better for multiple areas. If you’re unsure what capacity air conditioner size do i need, consulting a professional ensures you get the right fit.

Step 2: Selecting the Best Location

For the indoor unit, choose a wall with good airflow and minimal obstructions. The outdoor unit should be placed on a stable surface with proper ventilation to prevent overheating.

Step 3: Drilling and Mounting the Indoor Unit

Mount the indoor unit’s bracket on a sturdy wall, ensuring it is level. A hole must be drilled for refrigerant lines, electrical cables, and drainage pipes, angled slightly downward to prevent water buildup.

Step 4: Installing the Outdoor Unit

The outdoor unit should be positioned on a stable base, such as a concrete pad or wall-mounted bracket. It should have at least half a metre of clearance for airflow.

Step 5: Connecting the Refrigerant Lines and Electrical Wiring

Secure the refrigerant pipes and electrical wiring between the indoor and outdoor units. This step should be handled by a licensed technician to ensure compliance with Australian regulations.

Step 6: Testing the System

Once everything is connected, turn on the system to check for airflow consistency, refrigerant leaks, and any unusual noises. Adjust the settings to ensure even cooling.

Common Mistakes to Avoid When Installing a Ductless Air Conditioner

Even with the best system, improper installation can reduce efficiency and increase running costs. Avoid these mistakes:

  • Incorrect Placement: Installing the unit too close to ceilings or obstructions can reduce airflow.
  • Poor Insulation: Failing to seal wall openings can lead to energy loss.
  • Skipping Professional Installation: Refrigerant handling requires a licensed professional to prevent leaks and system damage.

How Much Does It Cost to Install Air Conditioning Without Ducts?

The cost depends on the type of system and installation complexity. On average, here’s what you can expect in Melbourne:

  • Single Split System: $1,500 – $3,500 (including installation)
  • Multi-Split System: $3,500 – $7,000 depending on the number of indoor units
  • Window Air Conditioner: $500 – $1,500

Getting quotes from multiple professionals ensures you get the best price for your setup.

Can You Install a Ductless Air Conditioner Yourself?

While mounting the indoor and outdoor units can be done as a DIY project, the refrigerant connection must be handled by a licensed technician in Australia. Attempting to do it yourself can result in fines and void your warranty.

How to Maintain a Ductless Air Conditioning System

Regular maintenance is essential to keep your system running efficiently. Here’s what you should do:

  • Clean or replace air filters every two weeks
  • Check refrigerant levels annually
  • Keep the outdoor unit clear of leaves, dirt, and debris
  • Schedule a professional servicing every 12 months

Is a Ductless Air Conditioner a Good Investment?

Installing a ductless air conditioning system is one of the best ways to improve home comfort without major renovations. It provides targeted cooling, reduces energy consumption, and increases property value. For homeowners in Melbourne, where temperatures can soar, having an efficient cooling solution is a necessity rather than a luxury.

Best Time to Install a Ductless Air Conditioner

Installing before summer ensures your system is ready before peak demand. Many homeowners opt for installation in autumn or spring to avoid the seasonal rush and secure better pricing.

Should You Install Air Conditioning While Renovating Your Home?

If you’re renovating your home, this is the perfect time to install air conditioning. You can plan for ideal unit placement, ensure electrical wiring is in place, and even integrate smart home technology for seamless control.

Final Thoughts on Installing Air Conditioning Without Ducts

Installing air conditioning in a house without ducts is easier than most people think. With multiple ductless solutions available, you can enjoy a comfortable home without extensive renovations. Whether you choose a split system, multi-split, or window unit, proper installation and regular maintenance will ensure optimal performance and energy efficiency. If you’re looking for a long-term cooling solution in Melbourne, investing in a ductless aircon system is a smart choice.