This Sunpak gas wall mounted heater has a two stage wireless remote control and an output up to 34,000 BTUs.
Williams 35,000 BTU Fireplace Front Liquid Propane Gas Room Heater 3502921A - The Home Depot
Mr. Heater 30000-BTU Wall or Floor-Mount Indoor Natural Gas or Liquid Propane Vent-Free Radiant Heater in the Gas Space Heaters department at Lowes.com