Your current position:  Faq
  • What is the covering area of JH heater?

    xin 适用空间.jpg

  • How do JH infrared radiant heaters work?

    A classic convection heater heats initially circulating air. Our infrared heating panels first people and objects, not the air around it. Infrared rays heat up the skin in a short time, and that warm glow goes through the blood circulation around the body. So you feel pretty soon a comfortable warmth while the surrounding air can be cooler.
    This illustration shows the difference between conventional and convection heat infrared heater:                      
    1.It warms human body directly by far infrared ways, instead of wasting lots of energy to warm the air.
    2.Compared with other radiant heater, it has much higher electricity-heater efficiency, because our heater adopts new Nano technology.
    3.It is much more comfortable than other electric heater.

  • How much does it cost to operate JH infrared radiant heaters?

    Assuming an electricity rate of €0.35 per kilowatt-hour, the operating costs for JH heaters range from €0.63 per hour (1800 W) to €1.12 per hour (3200 W). For comparison, a much less efficient “mushroom-type” patio heater with 13 kW costs €4.55 per hour to run, i.e. four times as much as the most powerful and longest  model.

  • What is difference between 13A heater and 14A heater?

    The difference is only the radiant panel design, inside heating element and structure are same, and the heating effeciency is also same.

  • What is the best installlation height?

     Recommended installation height is 1.8 to 2.5 meters
  • Why Short Wave ?

    Basially,the shorter the wave,the more easily it travels throught the air,Short wave infrared generates heat by heating the object it meets with,without heating the air around it, Even effective and instand heat withou pre-heating. A good example for this mode of acton is the effect that occurs when a person walks out of the shade into the sunlight. Although the ambient temperate remains the same,they feel the temperate as considerably warmer under direct solar radiation.

  • Why infrared?

    Benefis of short wave infrared radiation lamps compared with other radiating elements  

    Efficinecy: 92% of the energy consumed is transformed into infrared radiation and hence into heat,Ablity to direct the radiation:As with light,it is not affected by air currents ,there is no loss of enery,and the heat is applied where it is neeeded. 

    Versatility: The power input can be adjusted between 0% and 100% without any effect on lifespan. 

    Cleanliness and Safety: No noise,dust or smoke. 

    Compactness : Optimal power density.

  • What is electric heating system ?

    An infrared heater is a body with a higher temperature which transfers energy to a body with a lower temperature through electromagnetic radiation. Depending on the temperature of the emitting body, the wavelength of the infrared radiation ranges from 780 nm to 1 mm. The relationship between temperature and wavelength is expressed by the Wien's displacement law. No contact or medium between the two bodies is needed for the energy transfer. Infrared heaters can be operated in vacuum or atmosphere.

    One classification of infrared heaters is by the wavelength bands of infrared emission.Short wave or near infrared for the range from 780 nm to 1,400 nm, these emitters are also named bright because still some visible light is emitted;Medium infrared for the range between 1,400 nm and 3,000 nm;Far infrared or dark emitters for everything above 3,000 nm.

  • How about your delivery time?

    Generally, it will take 15-25 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

  • Are you a factory or trading company?

    We are a factory.