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Indirect Fired Heaters for Rent

United Rentals’ large fleet of indirect-fired heater rentals can provide heating for your next commercial, industrial or residential project.

For our full list of indirect fired heaters for rent, view the items below. For more information, visit our resource section.

Black FLAGRO Indirect Heater, 400,000 BTU/h, Diesel Powered
Cat Class Code
250-2475

Indirect Heater, 400,000 BTU/h, Diesel Powered

  • 390,000-408,000 BTU depending on model
  • Diesel or electric indirect fired heater
  • 2,500-3,760 CFM depending on model
  • 115-120V depending on model
  • Uses: Ideal for commercial and industrial heating applications
Blue and yellow Frostfighter indirect fire heater
Cat Class Code
250-3033

170,000-199,000 BTU LP/NG Indirect-Fired Heater

  • 170,000-199,000 BTU depending on model
  • LP/NG indirect-fired heater
  • 1,610-3,250 CFM depending on model
  • 115-120V depending on model
  • Uses: Ideal for commercial and industrial heating applications
Red and black CAMPO Indirect Fired Heater, 200 BTU, Diesel Powered
Cat Class Code
250-3040

170,000-200,000 BTU Diesel or LP/NG Indirect-Fired Heater

  • 170,000-200,000 BTU depending on model
  • LP/NG or diesel indirect-fired heater
  • 1,610-3,250 CFM depending on model
  • 115-120V depending on model
  • Uses: Ideal for keeping jobsites and events warm and comfortable
Gray and blue FROSTFGHTR Indirect Heater, 420,000-500,000 BTU/h, Propane/Natural Gas Dual Fuel
Cat Class Code
250-3115

320,000-325,000 BTU LP/NG or Oil/Diesel Indirect-Fired Heater

  • 320,000-325,000 BTU depending on model
  • LP/NG or oil/diesel dual-fuel options available depending on model
  • 2,800 CFM
  • 110-120V depending on model
  • Uses: Ideal for keeping jobsites and events warm and comfortable
Blue Frostfighter Indirect Fired Heater, 700,000 BTU, Propane/Natural Gas Dual Fuel
Cat Class Code
250-3117

683,000-700,000 BTU LP/NG or Diesel Indirect-Fired Heater

  • 683,000-700,000 BTU depending on model
  • LP/NG or diesel indirect-fired heater
  • 4,600 CFM
  • 208/230V, 3-phase 400V or 3-phase 460V and 3-phase 600V depending on model
  • Uses: Ideal for keeping jobsites and events warm and comfortable
Gray WACKER Indirect Heater, 750,000 BTU, Diesel Powered
Cat Class Code
250-3121

390,000-750,000 BTU LP/NG or Diesel Indirect-Fired Heater

  • 390,000-750,000 BTU depending on model
  • LP/NG or diesel indirect-fired heater
  • 3,000-4,600 CFM depending on model
  • 120-230V depending on model
  • Uses: Ideal for keeping jobsites and events warm and comfortable
Blue FROSTFGHTR Heater, 1,000,000 BTU, Diesel Powered, Towable
Cat Class Code
250-3122

505,000-1,000,000 BTU Towable Diesel or Electric Indirect-Fired Heater

  • 505,000-1,000,000 BTU depending on model
  • Diesel or electric indirect-fired heater
  • 3,200-6,200 CFM depending on model
  • 120V
  • Uses: Ideal for keeping large-scale jobsites and events warm and comfortable
Gray WACKER Indirect Fired Heater, 1,000,000 BTU/h, Propane/Natural Gas Dual Fuel
Cat Class Code
250-3123

1,000,000 BTU LP/NG Indirect-Fired Heater

  • 1,000,000 BTU
  • LP/NG indirect-fired heater
  • 1,300 lbs.
  • 240V
  • Uses: Ideal for keeping large jobsites and events warm and comfortable
Blue SUREFLAME Indirect Heater, 1,500,000 BTU, Propane/Natural Gas Dual Fuel
Cat Class Code
250-3133

Indirect Heater, 1,500,000 BTU, Propane/Natural Gas Dual Fuel

  • 1,500,000 BTU
  • Electric indirect-fired heater
  • 20,500 CFM
  • 208/230V, 460V or 575V
  • Uses: Ideal for space, process and temporary heating applications in or outdoors
Black MI-T-M Infrared Heater, 115,000 BTU/h, Diesel Powered
Cat Class Code
250-3170

111,000-125,000 BTU Diesel or Kerosene Infrared Heater

  • 111,000-125,000 BTU depending on model
  • Diesel or kerosene radiant heater
  • 68-104 lbs.
  • 120V
  • Uses: Ideal for space heating, industrial processes, food service, animal care, medical purposes, outdoor comfort and more
Red and black CAMPO Indirect Heater 400,000 BTU, Natural Gas

Low Emissions

Cat Class Code
250-3477

329,000-399,000 BTU LP/NG Indirect-Fired Heater

  • 329,000-399,000 BTU depending on model
  • LP/NG indirect-fired heater
  • 3,015-5,500 CFM depending on model
  • Heavy-duty design for commercial use
  • Uses: Ideal for keeping large jobsites and events warm and comfortable
Blue and black CAMPO Heater, 400,000 BTU, Ducted
Cat Class Code
250-3484

395,000-408,500 BTU Diesel Indirect-Fired Heater

  • 395,000-408,500 BTU depending on model
  • Diesel indirect-fired heater
  • 2,800-5,500 CFM depending on model
  • 110-120V depending on model
  • Uses: Ideal for commercial and industrial heating applications
Grey and red FROSTFGHTR Heater, 420,000-500,000 BTU/h, Diesel/Oil, Ducted
Cat Class Code
250-3485

420,000 BTU LP/NG or Oil/Diesel Indirect-Fired Heater

  • 420,000 BTU
  • Indirect-fired LP/NG or oil/diesel dual-fuel options available depending on model
  • 3,100-4,800 CFM depending on model
  • 110-120V depending on model
  • Uses: Ideal for commercial and industrial heating applications
Grey and red FROSTFGHTR Heater, 350,000 BTU/h, Diesel Powered, Ducted
Cat Class Code
250-3486

Heater, 350,000 BTU/h, Diesel Powered, Ducted

  • 350,000 BTU
  • Indirect-fired oil, diesel or kerosene heater options available depending on model
  • 2,500 CFM
  • 110-120V depending on model
  • Uses: Ideal for commercial and industrial heating applications
Black FLAGRO Indirect Heater, 400,000 BTU, Kerosene
Cat Class Code
250-3530

Indirect Heater, 400,000 BTU, Kerosene

  • 390,000-400,000 BTU depending on model
  • Indirect-fired kerosene heater
  • 2,500-3,600 CFM depending on model
  • 120V
  • Uses: Ideal for warming residential, industrial or construction areas
Grey and blue FROSTFGHTR Indirect Fired Heater, 390,000 BTU/h, Propane/Natural Gas Dual Fuel
Cat Class Code
250-6525

350,000-395,000 BTU Oil, Diesel or LP/NG Indirect-Fired Heater

  • 350,000-395,000 BTU depending on model
  • LP/NG indirect-fired or oil/diesel dual-fuel options available depending on model
  • 2,500-2,800 CFM depending on model
  • 110-120V depending on model
  • Uses: Ideal for maintaining optimal temperatures in commercial and industrial environments, such as factory floors, warehouses and office buildings
Resources

FAQs About Indirect-Fired Heaters

At United Rentals, our robust selection of commercial indirect-fired heater rentals offers heating solutions for a variety of applications, from warming enclosed spaces in large retail spaces, hospitals or warehouses to heating outdoor construction sites or events. In an indirect-fired heater, fresh air is pushed through a heat exchanger that generates cleaner and drier air to safely heat small and large spaces or speed up construction tasks like curing concrete. Our fleet of indirect heater rentals includes diesel, propane, natural gas and kerosene-powered configurations that are cost-effective, energy-efficient, portable and quietly operated. Rent indirect-fired heater models rated from 170,000 BTUs to 1.5 million BTUs from reliable brands such as Frost Fighter, Flagro, L.B. White and Campo.

Learn more about indirect fired heater rentals in the FAQ section below.

What is the difference between direct and indirect-fired heaters?

Direct-fired heaters warm fresh air with an open flame. They are highly efficient, cost-effective and easy to move, but they create moist air and require plenty of ventilation because they produce carbon monoxide. Indirect-fired heaters contain the flame in a burn chamber, which warms a heat exchanger that warms fresh air that is pulled through it. These models are safe to use in enclosed spaces and generate drier air, but they are less efficient and more expensive to operate.

Are indirect-fired heaters safe to use indoors?

Yes, they can be used indoors if installed with the proper duct work. In an indirect-fired heater, combustion happens inside the heat exchanger, and unwanted fumes are exhausted through a chimney or flue.

What types of fuel can be used in indirect-fired heaters?

The type of fuel that can be used in an indirect-fired heater varies depending on the individual models. Most indirect heaters run on oil, diesel, natural gas, propane or dual fuel.