Start with the local property, not a generic BTU chart
Pretoria’s warm summer conditions, broad suburban footprint and mix of older houses, estates and small commercial premises make room-specific assessment essential. A high-ceilinged living area cannot be sized like a closed bedroom simply because their floor measurements look comparable.
Pretoria North includes many freestanding family homes, while Pretoria West mixes residential and practical business spaces. Both benefit from durable, serviceable installations rather than equipment selected only for lowest upfront cost.