EARTH Hour 2010 happens on March 27 at 8:30 pm. The collective support of the Filipino people made last year’s Earth Hour a resounding success for the Philippines, with the country ranking No. 1 worldwide in terms of scale of public participation. The results of last year’s Earth Hour have led to significant power savings and more important, greater prospects for meaningful and sustained actions against climate change.

On March 27, 2010, the Philippines once again joins over one billion people in more than 6,000 cities, towns, and municipalities worldwide in this symbolic act in response to the environmental realities the world faces today.

Here’s how you can play an active role in Earth Hour 2010:
• Switch off your lights in at home and in your office;
• Attend the Earth Hour countdown in SM Mall of Asia from 7 pm to 10pm; and
• Switch from incandescent bulbs to compact fluorescent lamps (CFL).

Meanwhile, here are more energy efficiency tips from Meralco especifically for those seeking to beat the heat this summer. After all, helping save Mother Earth is not the work of just one hour!

According to Meralco, choosing the right size of air conditioning unit for your room size can help you save on electricity. With the right unit size, your air conditioner will operate properly for peak efficiency and would require low maintenance only.

• First, determine the floor area of the room you want to install an air conditioner in, in square meters; for example, the floor area of a room with a length of five meters and a width of four meters is 20 sq. m.
• Use this formula to estimate the required cooling capacity: Cooling capacity = size of the room (m2) x 500 kJ/hr – m2. Substitute the computed floor area as the size of the room and then multiply this value by the constant 500kJ/hr – m2. The resulting value is the estimated cooling capacity of the air conditioner that you need to install. *Look for a unit with matching cooling capacity as shown in the Energy Guide. If the matching cooling capacity is not available, choose the one with the next higher value. Get the highest Energy Efficiency Ratio (EER) rating that your budget can afford as the higher the EER, the more savings you get from operating the unit.
• Set your thermostat at the highest comfortable temperature possible. A comfortable room temperature setting is about 24 degrees Celsius. Setting your thermostat at a colder setting than normal when turning your unit on will not help cool your room any faster. Rather, it could result in excessive cooling and, therefore, unnecessary expense.
• Check the filter once a month by holding it up against the light. If you can’t see through it, it’s time to clean or replace the filter.

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