What does infrared radiation mean ?

The infrared emission or infrared light is an electromagnetic emission with wave length from (0.7 to 300) μm (micrometers), in other words – from the end of the red area of the visible spectrum to the  microwave emission. Infrared rays are often called heat rays, because they have high thermic effect on human skin when near to heated bodies, which are the main source of infrared emission. Thus the emit wave length depends inversely to its temperature: the higher the temperature, the shortest the wave length and with higher emit intensity. All bodies with temperature higher than the absolute zero (-273.15C) are emitting infrared emission.

Are infrared rays dangerous?

The visible spectrum rays and infrared rays cause no harm effects to living organisms. Infrared rays heat the Earth since the dawn of Earth’s creation, since the birth of the Sun – infrared emission is everywhere in our system.

What are infrared short waves?

Infrared short wave is part of the non-visible light, which is situated directly next to the visible red spectral range (Wave length from 780 to  1.400nm) and felt as warmth. Infrared short waves are among others also responsible for the feeling of warmth created by the natural solar radiation (sun rays). This radiation is artificially created with

How does a infrared radiant heater work?

An infrared radiant heater converts electric energy into infrared short wave rays which are distributed to the surrounding area by the specific geometric design of the radiant heater, where they heat people and objects. The energy conversion takes place in a crystal tube inside the radiant heater which contains a glow wire in a special gas mixture as well as a special surface coating.

How efficient is an infrared radiant heater ?

The efficiency factor of an infrared radiant heater lies between 85% and 93% of the electricity that is loaded into the heater. This figures depend highly on the components used, mainly on the cristal tube. There may be huge differences between low cost productions and high quality heaters distributed by redsun. The loss of electric energy  (the remaining % to achieve 100% efficiency) results mainly from the wires, pipes and the convection. As a comparison, a convectional heating system (radiators, air conditions, blowers, etc.) has an efficiency rate of around 50%-70%.

How hot does an infrared radiant heater get on the outside surface?

Depending on the design, material and the heating capacity an infrared radiant heater reaches between 120° and 180° Celsius surface temperature.

How hot does the tube get ?

The tube inside an infrared radiant heater heats up depending on the surrounding environment (Air temperature, humidity, Convection, etc.) and heating capacity (i.e. kWh of the heater) and reaches between 800° and 900° Celsius.

What is the guaranty of the tubes and the radiant heaters?

The guaranty of the radiant heater (body) is 2 years, of the pipe (inside and may be changed separately, same like a  simple lamp bulb in a household) 1 year.

How long does a tube last?

An infrared heating pipe lasts up to 5‘000 hours. Many different factors such as temperature, humidity, pollution, direction of applicance, vibrations, etc. may have influence on the life span of the pipe. The pipes are built for constant operation, i.e. do not need breaks for cooling down to recover.

What do the IP declarations mean ?

The IP declarations show how well a device is protected against contact and dirt (1st figure) as well as against water (2nd figure). Our infrared radiant heater have following IP declarations:

IP20: Protected against contact with finger or other hard materials with a caliber up to 12.2 mm. No protection against water.

IP24: Protected against contact with finger or other hard material with a caliber up to 12.5 mm. Protected against water splashes.

IP65: Protection against wire and any other hard material as well as dust. Protection against jet of water (out of a nozzle) from different angles.

IP67: : Protection against wire and any other hard material as well as dust. Protection against temporary submersion.

What area may be heated with an infrared radiant heater?

One single Infrared radiant heater can, depending on the angle to the surface, cover between 10m² and 12m². It must be noted however, that the intensity, such as with every source of light, decreases with an increasing distance. Further it is not possible to heat an area that is in the shadow due to an object standing between the radiant heater and this area, same as we know from the sun light.

In order to heat up bigger areas with one single radiant heater, one must use a multi-device with several heating pipes.

General wattage suggestions:

140W/m² for warehouse
180-200W/m² for office
180-220W/m² for home
250W/m² for outdoor no wind
300W/m² for outdoor partly windy
400W/m² for very cold outdoor seaside/mountains

What is the angle of radiation?

The angle of radiation of a radiant heater depends on the geometry of the used reflector as well as other components that distribute rays. Our infrared radiant heaters have a radiation angle vertically to the heating pipe of approx.  90°. On the side of the infrared heater an angle of 40° may be reached.

On which materials can infrared radiant heaters be mounted?

Using the hanger attached to the heater an Infrared Radiant heaters may be mounted on any surface that is able to carry the weight of the device. Further it should be considered that the parts to which a heater is attached will not take any damage due to the heat, for example metal parts, walls or wood parts. Be careful with plastic parts because they tend to melt when facing high temperatures. If you have doubts please do not hesitate to contact us for advice.

How many radiant heaters can be controlled with one dimmer ?

The amount of radiant heaters per dimmer depends on the capacity of the heater as well as the capacity of the dimmer. The model BHC3600-x can regulate a heating capacity of 3600W.

In case a dimmer can control different zones, the amount of zones is shown on the last figure of the description, i.e. BHC4002-ER can regulate 2 different zones. Smaller dimmers can usually only control one zone.

Which fuse should be used with an infrared radiant heater?

An infrared radiant heater uses a high initial current when switching it on (approx. 10 times more than during normal operation), however only for a very short moment (considerably below one second). This is why a slow-blow fuse (C-Automat) should be used to avoid an activation of the fuse during this moment. The fuse must comply to the technical regulations of each infrared radiant heater (see datasheets).

Can a room be heated up with an infrared radiant heater similar to a common heating ?

Infrared radiant heaters do not heat up the air within a room but the objects such as furniture, bodies, walls, etc. The infrared rays warm up objects which return part of the warmth back to the surrounding air which as a conclusion heats up a room or the surrounding area.

What is the optimal mounting height of an infrared radiant heater ?

Heaters intended for wall mounting should be applied at a height between 1.8m and 2.5m to create an optimal heating effect. The ideal height depends on the capacity of the heater, the area that has to be heated and other external factors. We are happy to consult you in order to evaluate the ideal height and mounting of the heaters.

Where can I buy the Infrared Radiant Heaters?

Infrared panel heaters from Redsun can be bought from:
-our office-store at – Sofia city, Shoping centre “TABI”, Todorini Kukli Street, №20
-from our partners published on our website
-delivered to you by courier
-delivered for free to the nearest office of the courier company we work with

Do you offer leasing?

Yes. We offer leasing for all our products. Leasing contracts can be made in our shop. For more information contact us.

For questions that are not present in this section please ask them using the inquiry form.