Arcadia Halogen PAR38 Reptile Heat Lampsmake up the backbone of effective heating. They provide strong visible light, IR-A, work well with dimmers and have a longer life than tungsten.The PAR38 is the stand out ‘wow’ lamp and is theperfect partner for DHPwhere DHP fills in the missing IR-B to create about the closest representation of natural heat from terrestrial daylight.