If you’re considering upgrading your home’s climate control system, it’s essential to know how efficient your new unit will be. At Melbourne Aircon Specialist, we guide homeowners through the most important metrics in the VEU rebate program: EER (Energy Efficiency Ratio) and COP (Coefficient of Performance).

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What is EER and Why It Matters?

EER, or Energy Efficiency Ratio, tells you how efficiently an air conditioner converts electricity into cooling. The higher the number, the better the performance.

How EER is Calculated:

EER = Cooling Output (kW) ÷ Power Input (kW)

Example:
If a system delivers 6kW of cooling using 1.5kW of electricity:

EER = 6 ÷ 1.5 = 4.0

This rating is crucial not only for lowering your power bills but also for qualifying under the Victorian Energy Upgrades (VEU) program.

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What’s the Difference Between EER, COP & SEER?

Each rating plays a different role in measuring system efficiency.

Metric	Stands For	What It Measures	Relevance
EER	Energy Efficiency Ratio	Cooling efficiency at a fixed condition	Key for VEU rebates
COP	Coefficient of Performance	Heating efficiency at a fixed condition	Important for reverse-cycle systems
SEER	Seasonal Energy Efficiency Ratio	Average cooling efficiency over the season	Reflects real-world performance

📌 EER = Cooling | COP = Heating — both matter when choosing reverse cycle systems.

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What Is a Good EER Rating?

System Type	EER Rating
Average new systems	3.5–4.0
High-efficiency units	4.0+
Older systems	2.0–2.5
Top VEU-approved models	Up to 5.0

The higher the EER and COP, the greater the savings and chances of rebate eligibility.

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Real-World Example: VEU-Eligible System (Midea MULMI0618-B)

Setup	Cooling Output (W)	Power Input (W)	EER	Heating Output (W)	Power Input (W)	COP
4x 3.5kW Heads	13,500	3,400	3.97	15,600	3,950	3.95
6x 3.0kW Heads	18,000	4,950	3.64	21,000	5,800	3.62

📝 Note: Adding more heads reduces overall system efficiency due to increased load.

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Why Does EER Matter for Rebates and Savings?

• VEU eligibility depends on meeting or exceeding minimum EER and COP ratings.
• Systems with higher efficiency:
  • Lower running costs
  • Reduce carbon emissions
  • Unlock maximum rebates

Tip: Use an online EER calculator or spec sheet to compare units before buying.

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Final Recommendation from Melbourne Aircon Specialist

To get the best value:

• Choose units with EER ≥ 3.8 and high COP values
• Look for 4–5 star rated models
• Ensure VEU program eligibility for rebates
• Contact our team to ensure professional, compliant installation

We help Melbourne homes upgrade to energy-efficient systems that lower bills and boost comfort.

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FAQs

Q1: Is a higher EER better?
Yes! A higher EER means better efficiency, lower energy use, and reduced running costs.

Q2: What’s the ideal EER range?
Look for air conditioners with an EER between 3.5–4.5. Anything above 4.0 is excellent.

Q3: Which star rating should I aim for?
5-star systems offer the best efficiency. Always choose the highest your budget allows.

Q4: What’s the difference between EER and COP?
EER measures cooling performance, while COP measures heating. For year-round performance, both are critical.

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📞 Need Help Choosing the Right Air Conditioner?
Contact Melbourne Aircon Specialist today for expert advice and VEU rebate assistance.

👉 Call 1300 001 690
📧 info@melbourneairconspecialist.com.au