Every resort seems to be just obsessed with cost cutting nowadays and its steadily getting worse by the day. Maybe it has something to do with the current government’s pledge to be ‘carbon-free’ or it might be because of the perceived immediate threat to the country by Global warming (which some believe is a hoax.) Anyways, the first usual answer to the question of how to save energy in a resort normally comes like, to change all the lights to energy saving bulbs, to change all normal air conditioners to Daikin VRV systems etc.. or something simplistically similar. However this can be very wrong. While energy saving bulbs are in fact more economical to use in the long term, the cost of one energy saver bulb is several times more than a normal bulb. So the costs pretty much even out over a long enough space of time. However the typical longer life span of an energy saver bulb means less inconvenience for the guest and less work for the work overloaded maintenance desk.
Much more energy could be saved in a typical guest room by taking care of the air-conditioner and water heater. If an air-conditioner is not serviced routinely, dust attaches to both the condenser and evaporator of the system which clogs and lowers the energy efficiency of the unit which will cost much more times the difference saved from bulbs being changed to energy saver type.
The water heater can also waste a lots of energy if its thermal cut-out temperature is higher than is necessary. Together with air-conditioner these two units are the most energy intensive units in a typical guest room.