How many BTU AC do I need?
Right-sizing your AC directly impacts your power bill and comfort. An undersized unit runs flat-out non-stop; an oversized one short-cycles and doesn't dehumidify. Get a recommendation in 30 seconds.
Base value: 600 BTU/h per m² at 2.7 m ceiling, average sun and good insulation.
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Frequently asked questions
Quick answers about BTU, kW and practical sizing for rooms in Varna.
How many BTU AC do I need for a 20 m² room?
For a standard 20 m² room with a 2.7 m ceiling, average sun and good insulation — about 12,000 BTU (12K). For a south-facing room or top floor — 14,000–18,000 BTU.
How many BTU for a 30 m² living room?
For a 30 m² living room we recommend 18,000 BTU (5.3 kW). For strong sun exposure or high ceiling — 24,000 BTU.
What are BTU and kW?
BTU/h is a British unit of thermal power showing how much energy the unit removes per hour. 1 kW of cooling ≈ 3,412 BTU/h. So 12,000 BTU ≈ 3.5 kW.
Is more power always better?
No. An oversized AC short-cycles (turns on/off too often), doesn't dehumidify well and uses more electricity. The right size saves 15–25% on the bill.
How much does installing a 12,000 BTU AC cost in Varna?
Standard installation of an AC up to 14,000 BTU in Varna — €190 (372 BGN) including 3 m of copper pipe, materials and 12-month warranty. Dismantling of the old unit — €32 extra.
How many BTU for a 12 m² bedroom?
For a 12 m² bedroom — 9,000 BTU (2.6 kW) is plenty. This is also the most energy-efficient class.