{"id":123439,"date":"2026-08-24T21:00:00","date_gmt":"2026-08-24T21:00:00","guid":{"rendered":"https:\/\/pelletkachelvoordeel.com\/?p=92001"},"modified":"2026-08-27T23:16:49","modified_gmt":"2026-08-27T21:16:49","slug":"welk-vermogen-pelletkachel","status":"publish","type":"post","link":"https:\/\/pelletkachelvoordeel.com\/en\/pelletkachel\/welk-vermogen-pelletkachel\/","title":{"rendered":"What output pellet stove do you need? Calculation table by property"},"content":{"rendered":"

What is the heat output of a pellet stove?<\/strong> do you have necessary <\/strong>for a a normally insulated house<\/strong><\/em>? Allow for approximately 0.08 kW per cubic metre of space to be heated. A living room measuring 40 square metres with a ceiling height of 2.5 metres would therefore require approximately 8 kW. With good insulation, this figure may be a third lower; with poor insulation, it may be a third higher.<\/p>\n\n\n\n

That figure is more important than which make you choose. An incorrectly sized stove will perform poorly, no matter how good the appliance is.<\/p>\n\n\n\n

The three-step calculation method<\/h2>\n\n\n\n
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  1. Work out the volume.<\/strong> Area in square metres multiplied by the ceiling height. Only include the rooms that the heater actually needs to heat, but do include an open-plan kitchen or stairwell.<\/li>\n\n\n\n
  2. Multiply by the insulation factor.<\/strong> Poorly insulated: 0.10, normal: 0.08, well insulated: 0.05 kW per cubic metre.<\/li>\n\n\n\n
  3. Round off to the nearest unit<\/strong>, preferably downwards rather than upwards.<\/li>\n<\/ol>\n\n\n\n

    Example: a living room measuring 45 square metres with a ceiling height of 2.6 metres has a volume of 117 cubic metres. With standard insulation: 117 \u00d7 0.08 = 9.4 kW. A 9 kW unit is therefore more suitable than a 12 kW one.<\/p>\n\n\n\n

    Calculation table: surface area versus insulation<\/h2>\n\n\n\n

    Based on a ceiling height of 2.5 metres. If your ceilings are higher, add approximately 10 per cent for every extra half metre. You can calculate the area of multiple rooms here.\r\n \r\n \r\n <\/g>\r\n <\/g><\/svg><\/span><\/a><\/p>\n\n\n\n
    Surface area<\/th>Well insulated<\/th>Normally insulated<\/th>Poorly insulated<\/th><\/tr><\/thead>
    20 m\u00b2<\/td>2.5 kW<\/td>4 kW<\/td>5 kW<\/td><\/tr>
    30 m\u00b2<\/td>4 kW<\/td>6 kW<\/td>7.5 kW<\/td><\/tr>
    40 m\u00b2<\/td>5 kW<\/td>8 kW<\/td>10 kW<\/td><\/tr>
    50 m\u00b2<\/td>6.5 kW<\/td>10 kW<\/td>12.5 kW<\/td><\/tr>
    60 m\u00b2<\/td>7.5 kW<\/td>12 kW<\/td>15 kW<\/td><\/tr>
    80 m\u00b2<\/td>10 kW<\/td>16 kW<\/td>20 kW<\/td><\/tr>
    100 m\u00b2<\/td>12.5 kW<\/td>20 kW<\/td>25 kW<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Above about 12 kW, a standard stove for a single room becomes impractical. In that case, you should look for a ducted unit or for pellet boilers and central heating stoves<\/a>.<\/p>\n\n\n\n

    \"What\n\t\t\t\n\t\t\t\t\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n

    Why having too much wealth is worse than having too little<\/h2>\n\n\n\n

    This is the most important sentence in this article, and most salespeople don\u2019t say it.<\/p>\n\n\n\n

    A pellet stove<\/a> has a modulation range: for example, it can operate from 2.5 to 9 kW. If you install a 12 kW unit (modulation range 4 to 12 kW) in a room that requires 6 kW, it will almost always run at its minimum output of 4 kW, which is still too much. The result:<\/p>\n\n\n\n