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Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Heater — 80,000 BTU, Model# MHU80NG
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Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Heater — 80,000 BTU, Model# MHU80NG

Item# 27465

Was $569.99
Sale $499.99

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Manufacturer's Warranty: 3 year limited warranty

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Product Summary

This Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Heater is quiet and vented for easily heating a 2- to 3-car garage. The low-profile design requires only 1in. clearance from the ceiling (two angle brackets are included). Big Maxx features power exhaust for vertical or horizontal venting. Use right or left side piping, electrical and flue connections by simply rotating 180°. Big Maxx includes an aluminum tubular heat exchanger for maximum efficiency and longer life. Handy extras include spark ignition with a self-diagnostic control module and easy outside access to the thermostat and AC terminals.

What's Included

  • (1) Garage/workshop heater
  • (1) LP conversion kit

Features + Benefits

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  • Power exhaust allows for vertical or horizontal venting
  • Designed for right or left side piping, electrical and flue connections by simply rotating 180°
  • Tubular heat exchanger and spark ignition
  • Venting kit required (sold separately — Item#s 28794, 28795 vertical mounts; Item#s 29794 horizontal mount)
  • Thermostat sold separately — Item# 173641
  •  Includes LP conversion kit Note: Due to BTU loss through exhaust gases, heater runs at approx. 81% operating efficiency. Check local codes and ordinances for approved installation and usage.

Key Specs

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Item#27465
Ship Weight90.0 lbs
Product TypeForced air
Vent-FreeNo
BTU Output80,000
Heating Capability (sq. ft.)1,000
Blower IncludedYes
Blower Power Supply (Volts, Amps)110
Heat SettingsSingle
Fuel TypeNatural gas
Gas Inlet (in.)3/4 in. MPT
IgniterElectronic
Thermostat IncludedNo
Remote IncludedNo
Oxygen Depletion SensorNo
Dimensions L x W x H (in.)29.33 x 15.15 x 23.37

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Extended Warranty

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Service Protection Plus

Manufacturer Warranty:
3 year limited warranty

Protect your purchase beyond the manufacturer's warranty
with Service Protection Plus!

DESCRIPTION (Click More Info for details) 1 Year Extension 2 Year Extension
Extended Warranty Repair Plan
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Extended Warranty + Accidental Damage Repair Plan
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Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Heater — 80,000 BTU, Model# MHU80NG The price is $499.99.
Mr. Heater Big Maxx™ Natural Gas Garage/Workshop Heater — 80,000 BTU, Model# MHU80NG
(Not Yet Rated - New)
Item# 27465
In Stock Online
Was $569.99
Sale $499.99
Hide Similarities
Product Type Radiant heat Forced air Radiant heat Convection heater Forced air
Vent-Free No No Yes No No
BTU Output
25,000 50,000 60,000 75,000 80,000
Heating Capability (sq. ft.) - 700 - - 1,000
Blower Included No Yes No Yes Yes
Blower Power Supply (Volts, Amps) - - - 120 110
Heat Settings - Single - - Single
Fuel Type Natural gas Natural gas Natural gas Natural gas or propane using included conversion kit Natural gas
Fuel Consumption (gal./hr.) - Varies - - -
Gas Inlet (in.) - 3/4 in. MPT - 3/8 3/4 in. MPT
Igniter - Electronic Pilot light Hot surface igniter Electronic
Thermostat Included Yes No Yes Yes No
Remote Included No No No No No
Oxygen Depletion Sensor No No - - No
Dimensions L x W x H (in.)
29 3/4 x 12 1/4 x 7 18.5 x 25 x 17 - 17 5/8 x 25 1/4 x 24 13/32 29.33 x 15.15 x 23.37