Marquee heater hire in the UK: what to specify before you book

Electric radiant heaters are quiet, produce no combustion products and can be mounted inside the marquee, which makes them suitable for smaller structures, seated dining and venues with a usable power supply. Their limit is available electrical capacity: high-output radiant heating needs three-phase or a generator for larger marquees.

Indirect-fired diesel heaters sit outside and duct warm air in. They deliver high output without a large electrical supply, which is why they dominate large winter events, but they need external space, fuel, ducting routes and generator power for the fan. Direct-fired heaters introduce combustion products and moisture into the space and should not be used inside an occupied marquee.

Before requesting quotes, confirm what supply exists on site: single-phase 13A/16A/32A sockets, three-phase, or nothing at all. A 32A single-phase circuit supports roughly 7kW, so multi-heater electric setups quickly exceed a domestic-style supply. If a generator is needed, that cost belongs in the comparison alongside fuel and delivery.

Ask each supplier to state the total load, the number of circuits required and whether distribution boards, cabling and RCD protection are included. Vague quotes often omit distribution and become more expensive on the day.

Marquee fabric, drapes, table dressing and staging all impose minimum clearances that the manufacturer specifies for each heater. Radiant heaters must be positioned so nothing flammable enters the hot zone, and cabling should be routed away from walkways or protected by matting. Fuel-burning equipment needs separation from exits and from the public.

Confirm the supplier carries public liability insurance, provides a risk assessment and method statement, and will attend for setup and collection. Many venues and local authorities require this documentation before the event.

A clear quote separates heater hire for the stated period, delivery and collection, setup and takedown, generator or distribution equipment, fuel where relevant, standby or out-of-hours support and any damage waiver. Charges are usually per day or per weekend, with weekend and winter peak dates priced higher and booking well ahead of December materially improving availability.

If your event is longer, or the space is used repeatedly through winter, a permanent radiant installation can be worth pricing against repeat hire. We can pass your requirement to heating suppliers who cover both routes so you can compare.