For my next test, I performed the same test as the previous one, but left the door to the room open for the entire duration to see what effect would have on how well an electric fireplace can heat a room.

Therefore, the conditions for this test were:

• Electric fireplace on high heat setting (1850W) for the duration of the test.
• The door to the room was left open for the duration of the test.

This test started at 5pm, and I ensured that the starting temperature in the room was exactly the same as the first test, of 57.3°F (14.1°C).

Again, the thermostat was left in the room for a while before the test started to ensure that it was acclimatized.

Temperature recordings were also taken at 10 minute intervals, and the results for the second test are presented in the table below.