Miroland G19 & G80 Retro Filament Light Bulbs Review

As with standard incandescent filament light bulbs, these light bulbs consume a lot more energy than modern CFL and LED light bulbs and in turn run hot.

Power consumption

The power consumption of the G80 model is about 42 watts as displayed on the watt meter:

Miroland G80 wattage

The G19 model consumes slightly less at 39 watts:

Miroland G19 wattage

The voltage at the time of measurement was 233V:

Miroland Input voltage

Both light bulbs clearly meet their power consumption ratings.

A pair of bulbs run for an hour or two a day are unlikely to have a noticeable effect on your electricity bill, however, this energy consumption sharply increases with extended usage, particularly with multiple bulbs. For example, two bulbs run for 1 hour a day such as above a dining room table would consume 29.2kWh per year, roughly €5.34 per year in Ireland based on Electric Ireland’s standard price of 18.3c/kWh. Increase this to 6 bulbs and 5 hours a day such as in a retro chandelier in the hallway lit each evening and the cost goes up to roughly €80.15 per year.

Temperature

Most filament light bulbs run hot to the point that they will scald when touched, including 60 watt incandescent light bulbs typically used in table lamps.

Both light bulbs were operated in this table lamp for at least 10 minutes at which point the temperature stabilised. The temperature readings were taken by aiming an infra-red thermometer at the top centre of the bulb where the highest surface temperature is reached.

The G80 model became lukewarm around the outside of the bulb, but got quite hot at the very top:

Miroland G80 peak temperature

As the G19 is a smaller bulb, it has less surface area for its heat to dissipate, so its temperature at the top was higher:

Miroland G19 peak temperature

Despite the high readings, both bulbs can be touched at the top briefly without any issue. I also had no issue unscrewing either bulb by hand within 30 seconds of switching off, whereas a standard 60 watt bulb needs at least 5 minutes to cool down.

As with low energy light bulbs, the operating temperature will go up considerably when installed in a partially or fully enclosed lamp fixture, particularly with the base of the bulb facing up. With such usage, the bulb may need 5 to 10 minutes to cool down sufficiently before attempting to remove the bulb by hand.

This concludes our review. Head to the following page to read our final thoughts and conclusion….