1. Turn off your hot water tank
If you are vacant from your property for an extended time be sure to turn off the breaker for your hot water tank. You might also consider switching to an on demand tank. These smaller tanks are much more efficient and usually provide plenty off hot water for most people.
2. Turn off your breakers.
Many property owners in Costa Rica are away for extended periods. ALthough your lights and electrical devices might be off, they can still consume electricity, so if you are away go ahead and turn the breaker off, just be sure to leave the fridge on or at least cleaned out.
3. Switch out your light bulbs.
Changing your light bulbs can make a big difference. Both LED and CFL bulbs tend to be the most efficient, the bulbs can be more expensive but usually save you in the long run.
4. Turn off your ceiling fans.
Its good to air out your place while you are away, but don’t leave ceiling fans on forever. I think a lot of people are misinformed on how much electricity ceiling fans can consume, especially when they are left on all day long. Obviously if they are on because you are using them thats one thing, but if you leave your home for the day or are not in a bedroom, turn them off.
5. Make sure you air conditioner is getting cleaned and maintenanced regularly.
I know some people who go years without cleaning their AC, this just makes the unit work harder, costing you more, not to mention making it more likely that your AC will break down. Be sure to have it cleaned and checked every 6-8 months.