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How to Install

Free Standing

You can install and run these units almost anywhere. They are designed to heat large areas by funneling clean hot air directly into the surrounding area. Exhaust gasses need to be vented through the wall or roof to the outside.


The Zero Ridge hot air heater is very versatile. It can be located almost anywhere.  

It has two simple requirements;

  • located somewhere a flue can be exited from the building
  • located where the colder air can be drawn in and blown out.


Fabbri space heater installation in a warehouse
Fabbri heat flow diagram



The space heater can be sited in almost any dry location.

  • Any solid stable floor.
  • Chimney needs to exit the building and meet any local building regulations.
  • A designated safe zone around the space heater is advised.

Your space heater should be sited with the recommended minimum clearances. We recommend that your heater is installed centrally within the building. This removes the requirement for further ducting, which will allow you to heat the largest of premises effortlessly and efficiently.


Fabbri installation clearances

Where to position


It is important to install your hot air heater in a position away from regular traffic from people and machinery. 

We would recommend a dedicated marked floor area reserved for only the heater. 



Fuel storage should be local but at a distance to meet your own fire regulations.


Recommended Clearances Click Here

Chimney. Why it is needed and how to install.

A connection between the heater and the outside is needed. Within the combustion process of burning wood not all of it can be burnt, the leftover is expelled as smoke an exits through the chimney or flue.

A chimney is constructed from acid-resistant materials such as stainless steel. It will be constructed of two layers with insulation between the layers. This is important to prevent excessive surface temperatures and also to prevent heat loss.

The chimney should always rise with no more than 45deg angle from vertical. It must not be closer than 2" (50mm) from inflammable materials.

It should be supported as it passes through the roof with a roof flashing.

We do not recommend a chimney cowl.

Access for cleaning the flue and chimney should be provided.

Quick Chimney Guide Click Here