What is an indirect-fired heater?

Indirect-fired heaters have an enclosed flame within a sealed combustion chamber. The heat inside this chamber is then transferred to the air after passing through a heat exchanger. This guarantees that the flame never touches or reacts with the exhaust air, making it safe for enclosed spaces.

What are the benefits of an indirect-fired heater?

There are several advantages of using an indirect-fired heater. They are:

• The production of hot, clean air as the chimney expels all pollutants.
• Can be safely used in a range of areas and locations – both indoors and outdoors.
• Outdoor operation can decrease heating efficiency but the energy is recovered by recirculating clean air.
• By using tubes, the warm air an indirect-fired heater produces can be distributed to multiple different spaces and rooms.
• There are no potent smells or noxious fumes produced by an indirect-fired heater.

What is the difference between an indirect-fired heater and a direct-fired heater?

There are quite a few differences between an indirect-fired heater and a direct-fired model. Some of the main differences include:

• Direct-fired heaters can be used in unoccupied spaces with good ventilation while an indirect-fired heater can be used in small or large spaces with people present.
• An indirect-fired heater produces pollutant-free warm air while a direct-fired heater generates warm air and products of combustion.
• You can add additional tubes and air ducting to an indirect-fired heater, but not a direct-fired heater.
• An indirect-fired heater has a more complex design than a direct-fired heater, while the latter boasts quick and cost-effective maintenance – something the former cannot offer.