Mr. Heater Big Buddy Propane Space Heater 18,000 BTU - MH18B
Mr. Heater Big Buddy Propane Space Heater 18,000 BTU - MH18B
Mr. Heater Big Buddy propane space heater provides radiant heat for indoor and outdoor use. It has swivel regulators and connects to two 1 lb. cylinders; Buddy accessories can be used to connect to a 20-lb tank.
The heater has low, medium, and high settings and is designed to heat approximately 400 square feet. Safety features include an oxygen depletion sensor, thermal shut-down system, and accidental tip-over shut-off.
- Heat Output: 4,000, 9,000, or 18,000 BTU/hr
- Temperature Settings: Low, medium, high
- Fuel Connection: Two 1 lb. cylinders
- Coverage: Approximately 400 square feet
- Safety: Automatic low Oxygen Shut-Off System (ODS)
Shipping, returns & fit
Shipping is free on every U.S. order — no minimum. Orders are processed in 1–2 business days, then delivered in another 5–8 business days. We currently ship to U.S. addresses only.
Orders are picked and packed within 1–2 business days. Once shipped, delivery normally takes another 3–7 business days, and you'll receive a tracking link by email. Full details on our Shipping Policy.
You have 30 days from delivery to return any unworn item with tags in its original packaging. Return postage is paid by the buyer, unless your item arrived damaged, wrong, or never arrived — in those cases we replace it or refund you in full and cover the postage.
Approved refunds go back to your original payment method within 5–10 business days. See the full Refund Policy.
Sizes and measurements for each piece are listed in the description above. Colors may vary slightly between screens and batches — that is normal, not a defect.
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