In relatively recent time, some religious worship facilities are presenting a contemporary worship service with music that can be considered modern and different from the more traditional music produced by an organ, piano, groups that employ instruments as used by a symphony orchestra, and by a choir. Modern music for a contemporary service is typically produced by a band using electric keyboards, electric and acoustic guitars, drums, and singing by a solo vocalist or by singing groups with all of the music electro-acoustically amplified. Thus, halls, auditoriums, and sanctuaries for contemporary worship services must generally be less reverberant than a facility for traditional music, and the sound reinforcement system must properly handle relatively high level music and vocals. It also seems that architecture for worship facilities where contemporary services will be held has changed from more traditional architecture to more informal designs with exposed ceiling structure, movable chairs, etc. This also seems to produce HVAC systems with higher noise due to exposed supply air ducts, short return air paths, and roof-top air handlers. Examples of and acoustical data for worship spaces with contemporary services will be presented.