5000 BTU

We’ve tested the Mr. Heater Portable Buddy MH9BX and noticed how its dual-fuel capability (propane or electricity) lets us adapt to tricky power situations with ease. The 4,000–9,000 BTU output is surprisingly versatile; we found it livable for camping trips but powerful enough to warm small workshops during cooler months. The reflective quartz tube cuts down wasted heat, directing warmth straight to us. Even with its high BTU range, the heater remains indoor-safe, a key selling point for our multi-space use. Its sturdy construction and side handles ensure portability, though we wish the propane tank connection were more secure. The red and black versions look durable but could use a neutraler finish for professional settings. Overall, the MH9BX is a reliable performer that exceedingly fulfills its promise of BTU power for surprising uses.