How much heating does my marquee need?

Very simply one this, to raise a marquees temperature by 20degrees you require 1KW/3500BTU for 5 cubic metres.

Some examples:

4x4m Commercial DIY Marquee (average height is 2.5m) = 4x4x2.5 = 40 cubic metres so requires 8KW/28,000BTU’s
6x12m Commercial DIY Marquee (average height 2.5m) = 6x12x2.5 = 180 cubic metres so requires 36KW/126,000BTU’s
9x12m Deluxe DIY Marquee (average height 3.05m) = 9x12x3.05 = 329.4 cubic metres so requires 66KW/231,000BTU’s

Some things to point out:

Most room thermostats are around the 20degree mark so if it’s below freezing outside allow for more heating
If there are going to be lots of openings to the outside (rather than another marquee/the house) then allow for more heating
If it’s a formal evening function (think ladies in evening dresses) then allow more heating
Better to have several heat sources to create a more even room temperature than one large heat source which risks creating too hot and too cold areas in the marquee.
If it’s an 18th birthday party where everyone will be drinking and/or dancing then you can probably allow less heating

In short, I would always treat this number as a bare minimum, much better to have more heating than required so it can be turned down than risk having a function ruined th

The sort of figures quoted here can only realistically be achieved using gas or diesel/oil powered heaters. Save yourself a headache and avoid using any electrically powered heaters or infra-red heaters. They’re fine for taking the chill off on a patio or outside a pub, they are inadequate (not to mention expensive to run) in a marquee of any decent size.

Spencer

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