Mr. Heater MH45T Triple Tank Top Heater - Portable Propane Heat

In this review the Mr. Heater MH45T Triple Tank Top Heater is presented as a straightforward solution for short-term outdoor and semi-sheltered heating needs; its single biggest selling point is simple, adjustable heat output up to 45,000 BTU that runs from a standard propane cylinder. The reviewer finds it best for campsite groups, outdoor gatherings, and jobsite spot heating where portability and raw output matter more than precise indoor temperature control. Installation is basic and the unit provides immediate radiant heat, though customers report mixed experiences with lighting and flame stability.

Key Features

• Variable BTU Output: The heater delivers 10,000 to 45,000 BTU per hour so users can choose a single burner or all three for the heat they need.
• Three Heat Modes: High, medium, and low settings let you tailor fuel use and warmth for short stays at a campsite or while working outdoors.
• Safety Shutoffs: Three tip-over safety shut-off switches add a level of protection when the unit is bumped or repositioned on uneven ground.
• Durable Finish: Polished chrome and stainless steel components resist the elements and keep reflectors bright for directed radiant heat.
• Simple Mounting: Mounts on 20 to 100-lb. propane cylinders with a soft nose P.O.L. connection so common tanks work with the unit.

Who It's For

The heater is best for people who need portable, high-output radiant heat outdoors: campers, tailgaters, small work crews on open construction sites, or homeowners who want a quick warm-up while working in a garage or at a covered patio. It suits situations where instant warmth and simplicity matter more than indoor-style thermostatic control.

It is not ideal for fully enclosed indoor spaces or for users who require whisper-quiet, consistent flames at all times; reviewers noted some reports of burners blowing out or difficulty keeping flames steady, so anyone needing perfect ignition reliability or indoor-rated appliances should look elsewhere.

Pros & Cons

Pros

• High maximum output lets the unit warm several people in short order when all three burners run.
• Easy to mount on common propane cylinders and straightforward to set up for quick use.
• Tip-over safety shut-offs and match-lit ignition are practical for outdoor use where movement happens.
• Chrome reflectors focus radiant heat efficiently toward the target area.

Cons

• Some customers reported inconsistent lighting and burners that blew out in windier conditions, which can limit reliability outdoors.
• The unit is intended for outdoor use only and should not be used in fully enclosed spaces.

Specifications

Brand	Mr. Heater
Model	MH45T Triple Tank Top Heater
Heat Output	10,000 to 45,000 BTU per hour
Fuel	Propane cylinder, mounts 20 to 100-lb tank
Ignition	Match-lit ignition
Safety	Three tip-over safety shut-off switches
Construction	Polished chrome reflectors; stainless steel components

Our Verdict

The MH45T is a practical, value-oriented propane space heater for outdoor use where quick, adjustable radiant heat is needed. It shines for camping, tailgating, and short-term jobsite warmth because it is simple to mount and offers strong output, but potential buyers should accept that lighting and flame stability can vary; as long as you use it outdoors and expect a no-frills heater, it represents good value.

Frequently Asked Questions

Can this heater be used indoors?
No. The unit is designed for outdoor use only and should not be operated in fully enclosed spaces.

What size propane tank does it mount to?
The heater mounts on 20 to 100-lb. propane cylinders using a soft nose P.O.L. connection; tanks are not included.

How many burners can run at once?
Operate 1 to 3 burners for different heat output combinations, ranging from the low setting up to the full 45,000 BTU output.