Energy Energy Electricity costs Savings Refrigerant (kWh/day) (kWh/year) in 6 years) in 6 years) (€ (€ 50% Topten model 0.15 R290 55 66 Water Cooler energy/unit Cold Only Inefficient model 0.30 R134a 110 132 66 €/unit 80% Topten model 0.17 R290 62 74 Water Cooler energy/unit Hot and Cold Inefficient model 0.85 R134a 310 372 298 €/unit Comparing similar models, the Topten models allow electricity savings, in 6 years, up to 300 for €/unit hot and cold water and around 65 for cold only. Best models consume about 50% less energy €/unit than inefficient models, and even 80% less in the case of hot and cold units. Water coolers with climate-friendly refrigerants are starting to enter the market (e.g. R290 or R600a). Procurement criteria The following criteria can be inserted directly into tendering documents. The newest version of this document is always available at . Subject: Highly Energy-Efficient Water Coolers Technical Specifications Energy use per day Water coolers must use no more energy than given in the following table, measured according to the method described by ENERGY STAR under: https://www.energystar.gov/ia/partners/product_specs/program_reqs/ES_WC_V2_Spec.pdf Energy Use (On Mode With No Category Water Draw) Cold Only ≤ 0.16 kWh/day Hot and Cold 0.18 kWh/day ≤ Verification Bidders must supply the energy use measured according to the procedure defined by ENERGY STAR. Standby mode Water coolers must have the ability to go into standby mode. Verification Bidders must supply the manual and indicate the page(s) with instructions regarding standby mode.
Energy (kWh/day) Refrigerant Energy (kWh/year) Electricity costs (€ in 6 years) Savings (€ in 6 years) Water Cooler Cold Only Topten model 0.15 R290 55 66 50% energy/unit 66 €/unit Inefficient model 0.30 R134a 110 132 Water Cooler Hot and Cold Topten model 0.17 R290 62 74 80% energy/unit 298 €/unit Inefficient model 0.85 R134a 310 372 Comparing similar models, the Topten models allow electricity savings, in 6 years, up to 300 €/unit for hot and cold water and around 65 €/unit for cold only. Best models consume about 50% less energy than inefficient models, and even 80% less in the case of hot and cold units. Water coolers with climate-friendly refrigerants are starting to enter the market (e.g. R290 or R600a). Procurement criteria The following criteria can be inserted directly into tendering documents. The newest version of this document is always available at . Subject: Highly Energy-Efficient Water Coolers Technical Specifications Energy use per day Water coolers must use no more energy than given in the following table, measured according to the method described by ENERGY STAR under: https://www.energystar.gov/ia/partners/product_specs/program_reqs/ES_WC_V2_Spec.pdf Category Energy Use (On Mode With No Water Draw) Cold Only ≤ 0.16 kWh/day Hot and Cold ≤ 0.18 kWh/day Verification Bidders must supply the energy use measured according to the procedure defined by ENERGY STAR. Standby mode Water coolers must have the ability to go into standby mode. Verification Bidders must supply the manual and indicate the page(s) with instructions regarding standby mode.
Water_Coolers_Procurement_Guide_August_2016.docx