Frequently Asked Questions about Flued Gas Heater

The size of your room is the most important factor when selecting a gas-flued heater. For smaller spaces (around 29-42 square metres), you’ll need a heater with an output of 2.9-4.2 kilowatts (kW). Medium-sized rooms (46-66m²) require a heater with 4.6–6.6 kW, while larger areas (52-82m²) demand an output of 5.2-8.2 kW for effective heating. These guidelines ensure your heater provides optimal warmth without wasting energy.

Gas consumption varies based on heater size and output. A smaller heater (2.9-4.2 kW) typically uses 13-15 megajoules per hour (MJ/h), while medium-sized units (4.6-6.6 kW) consume about 18-21 MJ/h. Larger heaters (5.2-8.2 kW) will use over 23 MJ/h. Choosing the correct size for your space helps balance energy efficiency and heating performance, saving you money in the long run.

Yes, gas-flued heaters are designed with safety in mind. They vent combustion byproducts like carbon monoxide safely outside, keeping indoor air clean and healthy. Regular servicing is essential to maintain safety and efficiency, so ensure your heater is inspected and maintained by a licensed professional.