Straight-talking air conditioning advice for UK homes
Expert guidance from real-world installation experience. We provide practical, UK-specific advice to help you choose the right cooling solution for your home.
What size air conditioner do I need?
Our room sizing calculator provides a practical estimate based on your room dimensions. Please note that these results are estimates and professional sizing is recommended for optimal performance.
Enter the dimensions of the room you wish to cool (in metres).
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Width (m)
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Height (m)
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How Much Does AC Cost to Run?
Running costs are a significant factor in any home cooling decision. We break down the monthly electricity bills for different cooling capacities and explain how insulation and usage patterns affect your total energy spend.
2.5kW vs 3.5kW: Choosing the Right Output
Choosing the right cooling capacity is about more than just size. We explain the technical differences between 2.5kW and 3.5kW units, focusing on how they handle different room dimensions and seasonal demands.
Ready for professional installation?
Orion Electrical provides expert, UK-certified installation services for all your cooling needs. Our team ensures your system is correctly sized and fitted to your home's unique requirements.