Sure yea, it says outdoor only in the listing but it's fine, keep a window cracked (like with any propane burning CO is created.) It saved my families life, worked flawlessly, runs for 3 days on low off one tank.
Mr. Heater MH18CH Radiant Cabinet LP Heater https://www.amazon.com/dp/B0054WH796/ref=cm_sw_r_apan_glt_fabc_KJRFA0THGZJNC4XE5AZH?_encoding=UTF8&psc=1