Practical Ways to Reduce Household Electricity Consumption

The quickest way to lower your electricity use is to find the few appliances that use the most kWh and change how you use them. Spreading small efforts across everything does less. In Philippine homes with air conditioning, that usually means starting with the aircon. Next come appliances that run all day, like the refrigerator, plus standby loads, and then high-wattage appliances such as instant water heaters, flat irons and clothes dryers. Lighting matters, but in most homes it’s further down the list.

This guide follows that order. It also shows how to measure your own appliances so you don’t have to guess. Any peso figure below is a worked estimate using assumed wattages and the example rate of ₱15.06/kWh (Meralco’s announced overall rate for a typical household in October 2026). Your appliances, habits and utility rate will give different numbers.

First, find out where your kWh go

Two numbers decide what an appliance costs you: how many watts it draws and how many hours it runs.

kWh per month = watts ÷ 1,000 × hours per day × days per month
Monthly cost  = kWh per month × your rate per kWh

A 1,000 W flat iron used for 30 minutes three times a week (about 6.5 kWh a month) uses roughly as much as a 10 W router that never turns off (about 7.2 kWh), and both together use far less than an aircon running every night. List your appliances in the appliance consumption calculator and sort them by kWh. The top two or three are where to start. If you’re not sure how kWh turn into the peso amount on your bill, read how to calculate your electricity bill.

Three ways to measure

1. Read your main meter. Write down the reading before bed and again in the morning, or before and after a day out. The difference is what the house used. If you do this with almost everything off, you get your baseline, the power the house uses while it is effectively idle.
2. Use a plug-in energy meter. This is an inexpensive device that sits between the wall socket and an appliance and shows watts and cumulative kWh. Leave it on for a full day, or a full week for a refrigerator, to capture on-off cycling. It works well for refrigerators, TVs, computers, rice cookers, water dispensers and chargers.
3. Read the label and nameplate. The DOE energy label on newer aircons, refrigerators and TVs gives an estimated monthly kWh. The nameplate gives rated wattage, but actual draw depends on the setting, and appliances with compressors cycle on and off.

Where the kWh usually go

This order is typical, not a rule. A home without aircon but with an old second refrigerator and an instant water heater could look quite different, which is why measuring first helps.

1. Air conditioning: the biggest lever in most homes

An aircon combines high power draw with long hours. It also works harder when it’s hotter. Meralco notes that its own appliance calculator may underestimate cooling appliances from March to June, when compressors are under more strain.

Cut the hours first. Use the timer so the unit switches off a few hours into the night or once the room has cooled. Meralco suggests the same, using the timer or a smart plug.

Set a sensible temperature. The DOE’s consumer tip sheet on cooling appliances (May 2022) recommends 24°C. With a higher setpoint, the compressor has less cooling to do. Some households also run an electric fan alongside the aircon to stay comfortable at that setting.

Keep filters and coils clean. The DOE advises cleaning the filter and vacuuming the outdoor coil regularly. Meralco recommends cleaning filters at least every two weeks in high-use months and getting a professional cleaning every quarter. Meralco states that a clean filter “can reduce energy use by up to 9%”. That’s Meralco’s own figure, and your result may differ.

Keep the cool air in and the heat out. Close doors and windows while the aircon runs. Draw curtains or blinds against direct sun. Where possible, install the unit on a shaded side of the room, as the DOE suggests.

If you’re replacing a unit, compare energy labels (see below). Meralco says an inverter aircon can save “as much as ₱4.25 per hour” compared with a conventional unit. That figure comes from a comparison of 1.0 HP window and split-type units tested in 2019 and 2024, priced at Meralco’s 2024 average residential rate of ₱12.1817/kWh, and Meralco notes that actual savings vary. Our guide to inverter vs non-inverter aircons explains when the difference matters. You can test your own numbers in the aircon electricity cost calculator.

2. The refrigerator: small changes, every hour of the day

A refrigerator draws less than an aircon, but it never stops. Most of the advice is about helping its compressor run less. From the DOE and Meralco:

• Placement. Keep it away from the stove, oven and direct sunlight. Meralco suggests leaving about a 2-inch gap on all sides for air circulation.
• Door seals. Meralco’s paper test: close the door on a sheet of paper. If it slides out easily, the gasket needs repair or replacement. The DOE also says gaskets should be airtight.
• Fewer, shorter openings. Decide what you need before opening the door.
• Let hot food cool first, and cover liquids.
• Defrost manual-defrost units regularly. Meralco suggests defrosting when frost reaches about ¼ inch.
• Keep it reasonably full, but not packed. Meralco suggests about two-thirds full so air can circulate.
• Right-size it. Meralco’s rule of thumb is 7–10 cubic feet for two people plus about one cubic foot per additional person. A large, mostly empty refrigerator wastes energy.

An old second refrigerator or chest freezer used for occasional storage is worth checking. Put a plug-in meter on it for a week. If it uses a lot for very little benefit, consider consolidating. The refrigerator electricity consumption guide shows how to estimate this.

3. High-wattage appliances: water heaters, irons, dryers and cooking

Some appliances draw thousands of watts for short periods. A few minutes less each time adds up quickly.

Instant water heaters

In a warm climate, many households also skip the heater on hot days.

Ironing and clothes drying

Meralco’s laundry tips: iron large batches in one session so the iron doesn’t have to reheat again and again, match the temperature to the fabric, and switch the iron off a few minutes before you finish so the leftover heat does the light items. Many towels and drip-dry clothes don’t need ironing at all. For drying, Meralco calls the clothes dryer “usually the second or third largest electricity-consuming appliance” in homes that have one. Line-drying on sunny days avoids that use completely. For washers, run full loads without overloading and use the right amount of detergent so you don’t need extra rinses.

Cooking

• Rice cooker keep-warm. Meralco advises against leaving rice on “Keep Warm” for long periods. Cook closer to mealtime and unplug the cooker afterwards.
• Match pans to burners and use lids on electric stoves.
• Microwave or toaster oven for reheating small portions instead of a full-size oven.

4. Standby and always-on loads

Standby power is electricity that devices use when they’re switched off or not doing their main job. Examples include TVs, set-top boxes, speakers, game consoles, microwave ovens, chargers and air conditioners. Lawrence Berkeley National Laboratory estimates that standby accounts for 5–10% of residential electricity use. That estimate comes from Berkeley Lab’s research, not from a Philippine household survey, so your share could be higher or lower.

Always-on devices that you actually need, such as the router, CCTV and the refrigerator, are a separate category. Keep them, but know what they use.

What to do: Plug entertainment devices into a power strip with a switch and turn it off when you’re not using them. Unplug chargers and appliances like water dispensers or rice cookers when you don’t need them. Keep the switched strip somewhere easy to reach, or you’ll stop using it.

5. Lighting and fans

Lighting is usually a smaller share than cooling, but it’s easy to improve.

• Switch to LED bulbs as old fluorescent or incandescent bulbs burn out, and compare lumens (brightness) instead of watts.
• Turn off lights in empty rooms and use daylight where you can.
• Fans: the DOE recommends the lowest fan speed that keeps you comfortable, cleaning the fan regularly so the motor runs smoothly, and switching it off when no one is in the room.

Using DOE energy labels when you buy

The Energy Efficiency and Conservation Act (Republic Act 11285, 2019) requires the DOE to run a mandatory energy rating and labelling system. The law calls it the Philippine Energy Standards and Labeling Program, and the DOE’s label scheme is usually called the Philippine Energy Labeling Program (PELP). The law names products such as room air conditioners, refrigerators and televisions. Section 15 requires the label to show:

• the product’s energy efficiency rating,
• its estimated monthly energy consumption,
• the brand name and model, and
• the year the rating was issued.

Manufacturers, importers, distributors and retailers must display the label. The Department of Trade and Industry, through the Bureau of Philippine Standards, enforces the display requirement together with the DOE.

To compare models, look at the estimated monthly kWh and the efficiency rating for models of the same size or capacity. The DOE’s tip sheet suggests choosing refrigerators “with the most number of stars” or a high Energy Efficiency Performance Rating (EEPR). To turn the label into pesos:

Monthly cost difference ≈ (label kWh of model A − label kWh of model B) × your rate per kWh

Label figures come from standard test conditions. Your use will differ, especially for aircons in hot weather, so use them to compare models, not to predict your bill exactly.

A simple plan for the next month

1. Week 1: Read your meter daily at the same time and write it down. Note what ran that day.
2. Week 1: List your appliances in the appliance consumption calculator and find your top three loads.
3. Week 2: Make one or two changes to the biggest load, such as aircon hours and setpoint, or cleaning the filters.
4. Week 3: Measure your standby baseline overnight and set up a switched power strip.
5. Week 4: Compare your daily kWh with week 1. Use kWh, not pesos, because rates change every month.

The bottom line

Start with measurement, not guesswork. In most homes with aircon, cooling hours, temperature setting and filter cleaning matter more than anything else. After that come the refrigerator, high-wattage heating appliances and the standby devices that are on all day. Lighting and small chargers come last. When you replace an appliance, use the DOE energy label to compare models. Any saving depends on your own appliances and habits, so check your kWh each month to see what actually changed.