Products › Espar Heater Install Image 1 of 1 Espar Heater Install $999.00 Install an Espar style heater under your passenger seat, in a Sprinter, Transit or Promaster. Add To Cart Added! Install an Espar style heater under your passenger seat, in a Sprinter, Transit or Promaster. Reviews Reviewer Name Review Date Star Rating Description Posted on Etsy Product Show More You Might Also Like Under-Cover Board Rack Installation $160.00 The Juicebox -- 240 to 360AH Installation $320.00 Dometic RTX install $1,280.00 Rear Door Carrier Install $495.00 Fan Install $499.00