Shortwave halogen heat lamps consist of a tungsten filament heated by an electric current to a temperature of approximately 2200º c. At this temperature most of the emission (95%) is in the short-wave infrared wavelength.
Halogen heat lamps contain a small amount of halogen gas which surrounds the tungsten element. The halogen reacts with the evaporating tungsten and redeposits the tungsten back onto the filament. This prevents bulb blackening and extends the lifespan of the tungsten filament. This allows halogen lamps to operate at much higher temperatures – which is why they are a particularly effective source of outdoor heat.
Halogen patio heaters heat up the instant they are switched on. The warmth is immediate and this gives short-wave patio heaters one of their main benefits. The heaters only need to be switched on at the times an area is occupied. This can save a lot of money over conventional heating systems that might require several hours to heat a space before it feels warm. When heating an outdoor space with the wrong type of heat the temperature of the space may not increase due to wind and air movement. This makes it all the more important to specify the right heaters with the correct output to have an effect. Without doing this, you could be needlessly wasting energy.
Despite almost all of the Heat Outdoors short-wave infrared heaters utilising Halogen lamp technology, there are slight differences within the ranges which are explained below:
The Shadow Ultra Low Glare heater range have been designed and manufactured with the highest-grade halogen lamps available on the UK marketplace today.
The ULG range are fundamentally designed first and foremost to reduce light output, with a gold coating added to the halogen lamps. The ULG infrared range does however have other additional benefits along with this much needed light reduction. With the largest tungsten filament, the ULG range offers the most powerful heat output within the infrared range. By incorporating this with extra-large reflectors, the ULG range offers immediate, powerful and directed heat.
The gold coating applied to achieve the light reduction and fantastic heat output, also adds an extra protective layer to each lamp too. Increasing the already incredible strength of the infrared Halogen lamp, helping to reduce onsite damage or breakages.
Much like it’s ULG counterpart the Ultra Low Glare Plus heaters have been designed with light output in mind, or more accurately, the reduction of light output. Gone are the days where your patio area needed to look like a flood lit football pitch to be adequately heated! The extra gold coating on the Halogen lamps will reduce light output by up to 90%. This has made the ULG+ infrared range one of the most popular to date.
Due to the sleek design of the ULG+ heater unit, the tungsten filament within this Halogen lamp will be slightly smaller than the standard ULG range, as the lamps themselves are smaller in size to fit into the smaller units.
The sleek and smaller sized reflector and outer casing, created specifically to support where heater installation space may be more limited, will make the heater slightly less hot than the standard ULG heater range.
The Shadow Diffusion range includes both Carbon lamp heaters, and Halogen lamp heaters. The technical spec on each page will detail which lamp is used.
The Diffusion Halogen lamped range offers beautifully styled heaters, which will provide comforting and reliable close range personal heat.
The Halogen lamp design within the stunning Diffusion range doesn’t have the low glare gold coating, and is slightly smaller that both the ULG and the ULG+ halogen heater lamps. This won’t offer the powerful burst of heat that ULG infrared ranges do, bu will provideremarkable close range comfortable warmth. The Diffusion heater have been created for style. What they lack in Halogen heat, they more than make up for in their show stopping aesthetics.