Decode the energy label to find the most energy saving electrical appliances
While many electrical appliances claim to be energy saving, how energy efficient are they? Many of you would check the energy label for the appliances’ energy efficient, but how well could you read information from the label?
1. New and old energy labels
The new energy label maintains 5 energy efficiency grades. Grade 1 products are most efficient (in green) while Grade 5 products are least efficient (in red).
Starting from 2015, room air conditioners, refrigerating appliances and washing machines supplied by importers shall bear the “U1 energy label.” The grading standards has been upgraded and tightened. Take washing machines as example, those Grade 2 to 5 machines under the previous standards, all fall under Grade 5 in the updated standards.
Under the updated standards, how much energy could a Grade 1 electrical appliance save? From the below graph, a Grade 1 refrigerator could save 97% more energy than a Grade 5 one.
2. Calculate electrical fee from energy label
You could refer to the annual electricity consumption figure to compare which appliance could save more energy. The higher figure from annual electricity consumption, the higher your electrical fee would be.
3. Be an expert in energy saving by calculating efficiency of air-conditioners.
For air-conditioners, “Efficiency = cooling capacity/hourly electricity consumption”. Let’s use the below example for a trial calculation:
The higher the energy efficiency indicates the better energy saving it is. In general, 3 or above represents very high efficiency.
4. Look at water consumption and washing capacity of washing machines
Energy label varies between different electrical appliances. Washing machines with capacity below 7 litre shall bear energy labels, which list its water consumption and washing capacity for consumers' easy comparison.
Log inSee moreSee allMenuHomeSearchDid you meanPageHelp and supportDownload our appBusiness objectivesresults foundAccept and continueStart dateEnd dateEvent typeEnviroment relatedPreferred disciplineFirst PreferenceOther PreferenceProject focusProject codeInternship typePagesHelps and supportCourse durationSelect course durationCourse typeforFilter ByClear allShowing {0} of {1} resultsSort byEarliest start dateOldest start dateInternship start dateInternship end datePlease stay tuned for upcoming openings.CalculateKey in the figures and press calculate buttonTotal Carbon emission(kg/COApprox. number of trees plantedElectricity consumption(units)Bill CalculatorBilling Start DateBilling End DateTariff TypeConsumption Unit(kWh)Number of Billing DaysThe earliest date you can select is the 1st day of previous calendar year.Residential TariffConcessionary Tariff for the ElderlyCalculation DetailsNotes:Charge (HK$)DetailsConsumption PeriodRate (HK$)Large Power TariffLarge Power Tariff with High Voltage Super DemandHigh Load Factor Rider DiscountYesNoOn-Peak Period Unit (kWh)Off-Peak Period Unit (kWh)On-Peak Maximum Demand (kVA)Off-Peak Maximum Demand (kVA)Please select datePlease input Consumption UnitThis bill calculator is meant to calculate electricity charges for previous and current years only.The bill calculator can only calculate the budget electricity bill for up to 90 days.Start Date cannot be later than End Date.Please select Tariff TypePlease select High Load FactorPlease input On-Peak Period Unit (kWh) Please input Off-Peak Period Unit (kWh)Please input On-Peak Maximum Demand (kVA)Please input Off-Pear Maximum Demand (kVA)On or off peak demand, whichever is higher, should not less than 35,000 kVAThis topic is related toCustomer Service centreNoteTipView All10 sec videoAs a , I want toResidential customerBusiness customer No data District Sub-districtRecalculatePlease input Number of Billing DaysConsumption UnitkVAkWhEnergy chargeEnergy saving rebateFuel cost adjustmentConcessionary tariffRent & rates special rebateTotal amountEnergy charge on peakEnergy charge off peakDemand charge on peakDemand charge off peak2022 Special rebate2023 Special energy saving rebateSpecial fuel rebateBilling demand shortfallHigh load factor rider discountSearch Help and SupportLatest updateCustomer Service HotlinesYearMonthJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecemberDownloadLink copiedresultsSorry, something went wrong. We can't get that information right now. Please try again later.FeedbackHow would you rate the overall website experience today?Please tell us more(optional)Leave us your comments (optional)SubmitBill CalculatorEV TariffEV Residential TariffThe earliest date you can select is the 1st day of this calendar year.