Frequently Asked Questions

Find answers to common questions about choosing, buying and installing split system air conditioners with BESS Air.

General Questions


What size air conditioner do I need?

The ideal air conditioner size depends on room size, ceiling height, insulation, window size, sun exposure and how the room is used.

Room Size Recommended Capacity
Up to 15m² 1.5kW - 2.5kW
15m² - 25m² 2.5kW - 3.5kW
25m² - 40m² 4.0kW - 5.5kW
40m² - 60m² 6.0kW - 7.1kW
60m²+ 8.0kW - 9.5kW

If you're unsure, contact our team and we'll help recommend the right system.

What is a split system air conditioner?

A split system consists of an indoor wall-mounted unit and an outdoor unit. The two are connected by refrigerant pipework and electrical cabling. Most modern split systems provide both cooling and heating.

What brands do you sell?

We currently supply and install selected models from Mitsubishi Heavy Industries, Daikin, Hisense and TECO.

Which air conditioner brand is best?
  • TECO: Great value and ideal for budget-conscious buyers.
  • Hisense: Excellent features and value for money.
  • Mitsubishi Heavy Industries: Premium performance and reliability.
  • Daikin: Premium comfort, efficiency and advanced features.
Can I use my air conditioner for heating?

Yes. Reverse cycle split systems provide both cooling and heating, making them suitable for year-round comfort.


Installation Questions


Do you install the air conditioners you sell?

Yes. We offer supply-only, supply and installation, and site inspection options depending on your requirements.

What is a standard back-to-back installation?

A standard back-to-back installation generally means the indoor and outdoor units are positioned on opposite sides of the same wall, minimising pipework and installation complexity.

How long does installation take?

Most standard split system installations are completed within 4–8 hours. More complex installations may require additional time depending on access, pipe runs and electrical requirements.

Do I need a dedicated circuit?

In most cases, yes. Air conditioners typically require a dedicated electrical circuit and appropriate circuit protection. Our installers will assess this as part of the installation process.

Do you provide compliance certificates?

Yes. We provide the required electrical compliance documentation for works completed.

Can you remove my old air conditioner?

Yes. Removal and disposal of existing systems is available as an optional add-on service.

Do you install in double-storey homes?

Yes. Double-storey and non-standard installations may require a custom quotation depending on access requirements.


Ordering & Delivery


Do you offer delivery?

Yes. We offer free Perth Metro delivery on eligible air conditioning systems.

Can I buy the air conditioner without installation?

Yes. Supply-only options are available on most products.

Do I need a site inspection before ordering?

Not always. Many customers can proceed with a standard installation package. If you're unsure, we recommend submitting a Site Inspection & Custom Quote request.

How do I know if my installation is standard?

If you're unsure whether your installation qualifies as standard, contact our team via live chat or submit a Site Inspection & Custom Quote request. We'll review your requirements and provide a fixed-price quotation before any work is scheduled.


Running Costs & Efficiency


How much does it cost to run a split system air conditioner?

Running costs vary depending on system size, energy efficiency, electricity tariffs, usage habits and outdoor temperatures. Modern inverter air conditioners are significantly more efficient than older systems.

Are inverter air conditioners worth it?

Yes. Inverter technology helps maintain a consistent temperature while reducing power consumption and improving comfort.

What do energy star ratings mean?

Energy star ratings indicate the efficiency of the air conditioner. Generally, the higher the star rating, the more energy-efficient the unit will be.


Features & Technology


What is Wi-Fi air conditioning?

Wi-Fi-enabled air conditioners allow you to control your system remotely using a smartphone app. Many models also integrate with Amazon Alexa and Google Assistant.

What is a self-cleaning air conditioner?

Self-cleaning systems help reduce moisture build-up inside the indoor unit after operation, assisting with hygiene and ongoing performance.

Do air conditioners improve air quality?

Many modern systems include filtration technologies that help reduce dust, pollen, pet dander and other airborne particles.

Can I control my air conditioner with my phone?

Many of our Hisense, Mitsubishi Heavy Industries and selected TECO and Daikin models feature built-in Wi-Fi connectivity, allowing remote control via smartphone applications.


Warranty & Support


What warranty is included?

Manufacturer warranties vary by brand and model. Warranty information is displayed on each product page.

Who do I contact if I have an issue?

Our team is available to assist with product support, warranty enquiries and after-sales service. Contact us via phone, email or live chat.

Why choose BESS Air?
  • Free Perth Metro Delivery
  • Licensed Electricians & Refrigeration Technicians
  • Family-Owned Perth Business
  • Fixed Price Installation Packages
  • Professional Installation & Commissioning
  • Local Perth After-Sales Support
  • Compliance Certification Provided

Still have a question?

Contact our team via live chat, phone or our online enquiry form and we'll be happy to help.