Size and ceiling height
We start from a baseline thermal load per m² suited to the Mediterranean climate, and adjust it upward if the ceiling is higher than standard, since there's more air volume to cool.
Free calculator
How many BTU does your air conditioning need?
Enter your room's details and get an instant recommendation for power, equipment and an orientative price. No obligation, under a minute.
Room details
The result updates automatically as you fill in the form.
Recommended power
—
W
— BTU/h
Fill in the form to see your recommendation.
Orientative estimate based on a standard mid-range unit. The final power and price are confirmed during a free technical visit.
How we calculate your result
An estimate based on your home, not a generic chart
Sun exposure and windows
A room with direct afternoon sun or many windows gains more heat than a north-facing room with little light, so the unit needs a bit more power.
Location and occupancy
Inland areas of the Vega Baja see slightly hotter summers than the coast, and each extra person in the room also adds heat the unit has to offset.
This calculator gives you an orientative result to help you compare options before requesting a quote. For an exact recommendation, book your free technical visit: we'll survey your home in person and confirm the final equipment.
Frequently asked questions
Common questions about air conditioning power
How many BTU do I need for a 20 m² room?
As a rough guide, a 20 m² room with standard ceiling height and average sun exposure usually needs between 9,000 and 12,000 BTU/h (about 2,600-3,500 W). The exact figure depends on orientation, number of windows and location — try it in the calculator above.
Is this calculation reliable, or do I need a technical visit?
It's a rough estimate to give you a quick idea before requesting a quote. For an exact calculation and a final equipment recommendation, we always recommend a free technical visit, since factors like the home's real insulation or exact ceiling height affect the result.
Why does location affect the calculation?
Inland areas of the Vega Baja (Rojales, Almoradí, San Miguel de Salinas) tend to see higher summer peak temperatures than coastal areas, so the unit needs a bit more power to keep the room comfortable.