1) American indie rock group 2) Arms of the underworld 3) Baseboard apparatuses 4) Gats or rods 5) House-warming buys 6) Laboratory devices 7) Radiators 8) Radiators and such 9) Room radiators 10) Some pieces 11) Warming devices 12) Winter necessities Found on https://www.crosswordclues.com/clue/heaters