Expert installation

Air Conditioner
Installation Perth WA

With Perth summers regularly reaching 40°C and beyond, a properly sized and installed air conditioner is essential for any Perth home or business. Ares Energy's expert Perth AC technicians handle the full installation process, from site assessment and heat load calculation to final commissioning, ensuring your split system or ducted unit performs optimally in Perth's demanding Mediterranean climate.

All installations are completed by our team holding a Refrigeration and Air Conditioning (RAC) licence in Western Australia, and fully commissioned to meet Australian Standards and manufacturer requirements. Don't wait until summer. Book your Perth AC installation now.

NETCC approved

SAA accredited installer

ARC certified

Book an AC assessment 1300 717 583

Licensed electrician installing a split-system air conditioner including indoor and outdoor unit mounting and electrical connection – Ares Energy & Electricals, Perth WA

What we assess

What Size Air Conditioner Do You Need for a Perth Home?

Choosing the right air conditioner for a Perth home involves more than picking a brand. Perth's hot summers, roof type, and room orientation all affect the correct capacity. We review all key factors upfront to avoid issues after installation.

Room & Load

Room size, ceiling height, insulation, and heat load to determine the right capacity.

Electrical Capacity

Switchboard capacity and existing circuits to confirm your home can support the new system.

System Selection

Split system or ducted, inverter technology, energy star ratings and brand recommendations.

Circuit Requirements

Whether a dedicated circuit is needed and what wiring is required for safe operation.

Positioning

Indoor unit height and placement, outdoor unit location, refrigerant line routing.

Why it matters

Why Does Perth AC Installation Need to Be Done Correctly from the Start?

An air conditioner that is incorrectly sized, poorly positioned, or wired without a dedicated circuit may cool or heat initially but will run inefficiently, wear out faster, and potentially cause electrical issues over time. Perth homes with terracotta tile or metal roofs retain heat significantly beyond outdoor temperatures, making accurate heat load calculations essential.

Getting the assessment right before installation means your system runs at its designed efficiency, stays under warranty, and doesn't require costly corrections later. We won't recommend an oversized system just to upsell. The right unit for your Perth home is always the goal. New split systems now predominantly use R32 refrigerant, which replaces the older R410A due to its lower global warming potential. Under GEMS (Greenhouse and Energy Minimum Standards) regulations, all new air conditioners must meet MEPS (Minimum Energy Performance Standards). Look for a high star rating on the Australian Energy Rating label (now up to 10 stars) to compare running costs across Perth's long cooling season. Our technicians hold an Australian Refrigeration Council (ARC) licence, meaning all refrigerant handling on every installation is fully compliant with Australian regulations.

An undersized unit will run continuously without reaching target temperature, increasing energy bills and shortening the compressor lifespan.

Correctly installed split system air conditioner mounted on a feature wall in a modern living room – professional installation by Ares Energy & Electricals ensuring efficiency and warranty compliance

How it works

How Is a Split System Air Conditioner Installed in Perth?

We follow a structured process on every Perth installation to ensure safety, efficiency, and a result that lasts, from initial site assessment through to final commissioning.

Site Assessment

Before any work begins, we visit the site to assess the room, existing electrical infrastructure, switchboard capacity, and the most practical indoor and outdoor unit locations. This prevents surprises on installation day.

No obligation, we'll tell you exactly what's needed upfront

Room size & insulation review
Switchboard & circuit check
Proposed unit locations confirmed

Technician conducting a site assessment to select the correct air conditioning unit size and location for a residential home – Ares Energy & Electricals

System Selection

Based on the assessment, we recommend the most suitable system for your space and budget. We factor in energy efficiency ratings, brand reliability, inverter technology, and any future expansion plans such as multi-head configurations.

Honest recommendations, not based on margin or brand deals

Split system or ducted options
Correct kilowatt capacity for space
Energy star rating comparison

Licensed electrician recommending the correct split-system air conditioner size and model based on room assessment – Ares Energy & Electricals

Electrical Preparation

We install or verify a dedicated circuit for the air conditioner and ensure the switchboard has adequate capacity. If an upgrade is required before installation can proceed safely, we'll advise you clearly on what's needed and why.

All electrical work performed by expert electricians

Dedicated circuit installation
Correct cable sizing & protection
Switchboard capacity confirmed

Installation

Indoor unit, outdoor unit, refrigerant lines, condensate drainage, and electrical connections are all installed to manufacturer specifications. Penetrations are sealed, and the installation site is left clean and tidy.

Manufacturer-compliant installation to protect your warranty

Indoor & outdoor unit mounting
Refrigerant line installation
Sealed penetrations & clean site

Licensed technician mounting indoor and outdoor AC units, running refrigerant lines, and completing electrical connections – Ares Energy & Electricals

Testing & Commissioning

Once installed, the system is tested in both cooling and heating modes, refrigerant pressures are verified, and all controls are confirmed to be operating correctly. We walk you through operation of the system before leaving.

Full system walkthrough provided to every customer

Cooling & heating mode testing
Refrigerant pressure verification
Customer handover & walkthrough

Air conditioner testing and commissioning in cooling and heating modes with refrigerant pressure verification and customer walkthrough – Ares Energy & Electricals

Compliance & standards

Does Every Perth AC Installation Need to Meet Australian Standards?

Yes. Air conditioner installation in WA involves expert electrical work, refrigerant handling, and mechanical mounting, all of which are regulated. Ares Energy holds a Refrigeration and Air Conditioning (RAC) licence and an ARC (Australian Refrigeration Council) Refrigerant Handling Licence in Western Australia, ensuring every installation is fully compliant with Australian Standards including MEPS (Minimum Energy Performance Standards) under GEMS regulations.

We issue all required compliance documentation, including electrical certificates of compliance, so your Perth installation is properly recorded and doesn't create issues if you sell your property or make an insurance claim.

AS/NZS 3000:2018 (Amd 1:2022) Wiring Rules compliance

Electrical Certificate of Compliance issued

Licensed refrigerant handling (ARC accredited)

Manufacturer warranty requirements maintained

Air conditioning installation completed to Australian Standards AS/NZS 3000 with full compliance documentation – Ares Energy & Electricals

Why choose Ares

Why Choose Ares Energy for AC Installation in Perth?

We're electricians first, expert RAC technicians who have been installing air conditioning across Perth for years. Every installation is handled with the same rigour as any dedicated electrical job.

ARC Certified

Fully ARC certified for refrigerant handling and compliant air conditioning work across all brands.

Assessment Before Action

We never install without understanding the site first. A proper assessment means the right system is selected and installed correctly the first time.

Full Documentation

Electrical certificates, commissioning records, and warranty paperwork are completed and provided to you, not skipped to save time.

Honest Advice

If your existing electrical setup needs upgrading before installation, we'll tell you, and explain what it involves and costs before proceeding.

Brand-Agnostic

We work with all major brands and recommend what suits your space and budget, not what gives us the best margin.

Clean & Tidy Work

Installation sites are left clean. Penetrations are sealed, excess materials removed, and the unit is operational before we leave.

Premium Brands Only

We install only trusted, energy-efficient brands with proven reliability, so your system performs at its best for years to come.

Common questions

Frequently Asked Questions: AC Installation Perth

What size air conditioner do I need for a room in Perth?

As a starting point, Perth rooms typically require 0.06–0.07 kW per square metre. Perth-specific factors like terracotta or metal roofs (which retain significant heat), ceiling height, insulation, window size and orientation, and the number of occupants all affect the correct capacity. We carry out a proper heat load calculation before any unit is recommended or ordered, ensuring you get the right system for your Perth home rather than an oversized or undersized unit.

How much does split system air conditioning installation cost in Perth?

A fully installed split system in Perth typically costs between $1,800 and $4,800, including supply of the unit (indoor and outdoor), refrigerant line installation, electrical connection, and commissioning. Larger systems (higher kW), premium brands, complex installations, or properties requiring electrical upgrades will fall toward or above the top of that range. Ducted systems for larger Perth homes cost $8,000–$20,000+. We provide a fixed quote before any work begins.

Should I choose a split system or ducted AC for my Perth home?

Split systems are the most cost-effective and flexible option for most Perth homes, allowing you to cool or heat specific rooms or open-plan areas efficiently. Ducted air conditioning is better suited to larger homes (typically 4+ bedrooms) where whole-home climate control is preferred. Given Perth's hot, dry Mediterranean summers and mild winters, a reverse cycle split system delivers excellent year-round value. We assess your home and recommend the most suitable system without any upsell pressure.

Can I install an air conditioner myself in WA?

No. In Western Australia, you cannot legally install an air conditioner yourself. The installation requires both a Refrigeration and Air Conditioning (RAC) licence (for handling refrigerant and commissioning the system) and an expert electrician (for connecting the unit to your electrical supply). Unlicensed installation may void your manufacturer warranty, create insurance issues, and is illegal under WA law. Ares Energy holds both licences, ensuring your installation is fully compliant.

How long does split system AC installation take in Perth?

A standard single split system installation in Perth typically takes 3–5 hours, including mounting the indoor and outdoor units, running refrigerant lines, completing the electrical connection, and commissioning the system. More complex installations, such as multi-head systems, ducted systems, or installations requiring electrical upgrades, will take longer. We confirm the expected time on the day and complete a full system walkthrough with you before leaving.

What is a multi-head split system and is it worth it for a Perth home?

A multi-head split system connects multiple indoor units (e.g. bedroom, lounge, home office) to a single outdoor unit, reducing the number of outdoor units required and potentially lowering overall installation costs. They are a practical option for Perth homes where cooling multiple rooms is needed without the expense of a full ducted system. Each indoor unit can generally be controlled independently. We assess whether a multi-head or multiple single-split configuration is better suited to your property and usage patterns.

What brand of air conditioner is best for Perth's hot summers?

All major brands perform well in Perth when correctly sized and installed, but Daikin, Mitsubishi Electric, Fujitsu, Samsung, and Panasonic are consistently popular choices with Perth installers due to their reliability, energy efficiency, and parts availability. For homes in Perth coastal suburbs (Cottesloe, Scarborough, Fremantle, etc.), corrosion-resistant models rated for salt-air environments are recommended. We provide brand-agnostic advice, recommending what suits your space, budget, and location rather than what delivers the best installer margin.

What refrigerant do new air conditioners use?

Most new split system air conditioners now use R32 refrigerant, which has replaced the older R410A due to its lower global warming potential (GWP). R22 refrigerant is now banned in Australia, and from 2025 stocks available for recharging older R22 systems are effectively depleted, meaning R22 systems may no longer be serviceable. Our ARC (Australian Refrigeration Council) licensed technicians handle all approved refrigerants. When replacing an older system, we advise on the most suitable current refrigerant option.

Air Conditioner
Installation Perth WA