事業案内

Electric Electric Water Heater



yunoka FAQ
We answer common question about product of yunoka.
Please refer before question laying upon.




Q1. What is EcoCute?
In late years we attract attention as energy saving, high efficiency, economical hot water supply machine with hot water supply machine of CO2 refrigerant heat pump type developed in 2001 by Denso and Tokyo Electric Power Co.,Inc., Central Res. Inst. of Electric Power Industry and country establishes spread number aim and recommends positively. We assume electricity heat source and are introduced a lot in electric-power-controlled house.
Q2. What is heat pump type?
We absorb atmospheric heat and are system to change to energy. Because we can make several-fold energy of quantity of heating with little energy, we attract attention as eco-friendly system. Of EcoCute, besides, even air-conditioner or refrigerator are used.
Q3. Difference between electric water heater and EcoCute?
Electric water heater forms hot water using heater. EcoCute forms hot water using atmospheric heat by heat pump not heater. As well as electric power, EcoCute to prepare hot water into using heat of air makes hot water efficiently. Therefore electricity bill of the moon is about 1/3 of electric water heater with EcoCute.
Q4. Why is it eco-friendly?
Because we use heat pump system, we can create thermal energy with quantity of little heating effectively. In addition, global warming potential is 1/1, 700 of Freon because refrigerant of heat pump uses CO2 of natural refrigerant not Freon-based gas. We collect effluent gas of factory and use this CO2.
Q5. Why does electricity bill become cheaper?
We can choose set rate contract of advantageous late-night electricity rate when we introduce late-night heat storage apparatus including EcoCute. (Kyushu Electric Power light contract "electrification de knight" "yoka knight 10") EcoCute collects hot water which boiled in the night when electricity bill becomes more economical as for 70% than noon in tank, and hang the hot water in evening from the next morning, and use. In addition, power consumption is 1/3 degree than conventional electric water heater as EcoCute boils hot water using atmospheric heat. Therefore we can largely hold down electricity bill.
Q6. Is additional heating of bath possible?
Hot water supply, maintenance and thermal insulation (automatic additional heating) of quantity of water are possible by button one push by fully automatic type. Of course we can make favorite quantity of water and yuon by manual operation.
Q7. How long does it take for hot water tension of bath?
It is - around 20 minutes for approximately 15 minutes (in the case of bathtub of 200L).
But please be careful as you vary according to environment of use including size of bathtub and strength of the water pressure.
Q8. How many hours can you do it in thermal insulation time for bath?
We can set in yunokaekokyuto until up to eight hours
Q9. Please tell about care and check method
We ask for care for bathtub adapter, drainage washing every day.
This is to prevent adapter by adhesion such as scale, clogging of the plumbing. And we ask for 2-3 times, washing and short circuit crossing gate, escape valve, simple check of tank and care for bath pipe using cleaner in year.
Specifically, look at instruction manual.
In addition, there are consumption parts (including various valves and sensors) in various parts using with EcoCute, too.
Therefore exchange of those parts may be necessary.
We recommend periodical check (pay) once in 3-4 years in yunoka.
Please offer application to store, installation construction shop you want. ※We change thing needing parts exchange for a fee by parts and setting condition and terms of use needing periodical exchange, special environment.
※Please appoint our genuine parts on parts exchange by all means.
Q10. Is remote control of bathroom waterproofing?
It is waterproofing type, but please do not sprinkle water intentionally. It may cause trouble.