# Home energy cost comparison by country | EcoBack Canonical: https://getecoback.com/en/solution-calculator.html Choose your country below for local guidance. The maths uses your bill and quotes, never a guessed national tariff. ## Country and language are different choices This English overview serves readers across countries. Germany, France, Spain and Italy have separate local-language pages with national resources. We do not infer your tariff, permissions or eligibility from your browser language or location. ## Start with the job the device must do A fan is not equivalent to an air conditioner. A dehumidifier does not repair a leak. Before comparing running costs, check capacity, room temperature, noise, drainage and installation. Confirm equal service only when both options meet the same need. ## Use bills and installation quotes Enter variable electricity charges including relevant taxes. For time-of-use tariffs, use a consumption-weighted price over the actual operating hours. Include any changed fixed charges in annual additional costs. Do not count unchanged standing charges as savings. ## Local decisions need local evidence German heating support has a KfW eligibility process. France has the Médiateur national de l’énergie tariff comparator. Spain provides CNMC tariff comparison and IDAE self-consumption guidance. Italy has Portale Offerte and ENEA tax-relief guidance. A tax deduction is not an upfront cash grant. ## How the calculation works Cooling/drying: W ÷ 1000 × hours × days. Heating: useful heat ÷ seasonal ratio. Saving = annual cost A − annual cost B. Payback = max(0, cost B − cash grant − cost A) ÷ positive annual saving. No financing, discounting, inflation, equipment replacement, degradation or delayed tax credits. Results do not establish capacity, installation permission or grant eligibility. ## Sources checked · 2026-09-20 - [France · official tariff comparator](https://comparateur-offres.energie-info.fr/) - [Spain · CNMC tariff comparator](https://comparador.cnmc.gob.es/) - [Italy · Portale Offerte](https://www.ilportaleofferte.it/portaleOfferte/) ## Buy less, compare better Compare appliance labels, dishwashing and showerheads. Start with an example; choose a country and decision. No account or personal details needed. Label: kWh/100 cycles ÷ 100 × yearly cycles; annual labels unchanged. Total = purchase + annual electricity × rate × years. Payback = positive extra investment ÷ positive annual saving. Dishes: machine energy × electricity price + litres × water price/1000; price handwash heating separately. Annual labels retain their standard test usage; cycle counts affect only cycle-based labels. Do not compare different test standards or capacities. Costs exclude finance, repairs, water, residual value and replacement. Keeping or repairing may be better. Electric appliances only: gas-appliance running costs are not modelled. Select the energy boundary: whole-cycle electricity includes heating once; for a hot-feed machine, use appliance-only electricity and externally heated litres separately. Do not enter annual EnergyGuide kWh as cycle energy. Dishwashers use the same load and rinse volume. The comparison excludes detergent, cleaning quality, time, purchase and installation costs. Water difference = flow difference × minutes × showers. Input energy = litres × temperature rise × 0.001163 ÷ heat/input ratio. Heat-pump ratio can exceed 1; use fuel price for a boiler. Does not model fixed tank losses. Do not change stored-water safety settings. - Heat-pump dryers: check capacity, space, drainage and cycle duration. - Fridges and freezers: compare usable volume, ventilation clearance and annual kWh. - Dishwashers: match load size, eco programme, plumbing and installation dimensions. - Low-flow showerheads: check minimum flow, pressure, heater and approval; shorter showers remain a no-purchase option. Sources & method - [UK energy labels](https://www.gov.uk/guidance/the-energy-labelling-of-products) - [Energy Saving Trust: water](https://energysavingtrust.org.uk/advice/saving-water-at-home/)