Marquee Heater Hire: How to Keep Your Guests Warm at Any Event

Booking marquee heater hire is one of those jobs that is easy to leave until the last minute, and one of the first things guests notice when it goes wrong. A marquee is a wonderful space for a wedding, party or corporate event, but it is still a tent. Once the sun goes down, the temperature inside drops quickly, even in the middle of summer. The good news is that the right heating, sized properly and set up by people who do it every week, keeps everyone comfortable from the first drink to the last dance.

This guide explains how marquee heating works, which type of heater suits which event, how to work out what size you need, and what a good hire package should include. Whether you are planning a late summer wedding in Kent, an autumn party in Sussex or a winter corporate event in Surrey, it should help you ask the right questions before you book.

Table of Contents

• Why does a marquee need heating?
• What types of marquee heater are there?
• How big a heater do you need?
• What should marquee heater hire include?
• Keeping everyone safe
• Heating the outdoor spaces too
• Marquee heating at a glance
• Frequently asked questions

Why does a marquee need heating?

A marquee does a brilliant job of keeping off the rain and wind, but the walls are thin fabric and there is no insulation. Whatever the temperature is outside, it will not be far off inside once the sun has gone. That is fine on a hot afternoon, but British evenings are rarely as warm as we hope. A summer wedding that starts in sunshine at two o’clock can feel chilly by nine, and from September onwards the evenings cool off fast.

Cold guests do not dance, they do not linger at the bar and they start looking for their coats before the cake has been cut. Heating is not a luxury add-on. It is part of what makes a marquee feel like a proper venue rather than a tent in a field.

There is also the morning to think about. If your marquee is used for a ceremony or a breakfast, it may have been sitting cold and damp overnight. A heater running for an hour before guests arrive takes the chill and the damp out of the air and makes the whole space feel more welcoming.

It is not only about winter

Many couples assume heating is only needed for winter weddings. In reality, plenty of marquee events between May and September need it too. Clear skies mean warm days but cold nights, and a thermostat-controlled heater simply sits quietly in the background until it is needed. If the evening stays warm, it barely runs. If the temperature drops, your guests never notice, because the marquee stays comfortable.

What types of marquee heater are there?

There are three main ways to heat an event space, and each has its place.

Indirect fired heaters

These are the standard choice for marquees, and for good reason. The heater itself sits outside the marquee. It burns fuel inside a sealed chamber, and a fan pushes clean warm air through a duct into the marquee. The fumes leave through a flue on the outside, so none of them end up inside with your guests.

Indirect heaters are powerful, quiet once they are set up, and they can be linked to a thermostat inside the marquee so the temperature stays steady all evening. Because the unit is outside, it also takes up no space on the dance floor and nobody has to look at it.

Electric heaters

Electric heaters are clean and simple, and they are useful for smaller spaces such as a bar tent, a reception area or a small marquee. The catch is power. Heating a large marquee with electricity alone needs a lot of it, more than many venues or field sites can supply, and it may mean a bigger generator. For most medium and large marquees, an indirect fired heater does the job far more efficiently.

Open flame and patio heaters

Gas patio heaters and fire pits are lovely outdoors, but they are not designed to heat the inside of a marquee. They give off heat and fumes into the space around them and need plenty of open air. Keep them for terraces, smoking areas and outdoor seating, where they add atmosphere as well as warmth. More on that further down.

How big a heater do you need?

There is no single answer, because the right size depends on several things working together. A good supplier will ask about all of them before recommending a heater.

• The size of the marquee. More floor area and a higher roof mean more air to warm.
• The time of year. An October evening needs far more heat than a July one.
• The walls. Solid or window walls hold heat better than open sides. If the walls will be rolled up for part of the day, the heater needs to cope when they come down.
• The number of guests. People generate heat. A packed dance floor warms up on its own, while a half-empty space stays cooler.
• The ground. A marquee on grass with no floor feels colder than one with a raised floor and carpet.
• Doors and entrances. Every time a door opens, warm air escapes. Busy entrances, catering tents and walkways all need to be taken into account.

It is usually better to have a little more heating capacity than you need rather than too little. With a thermostat fitted, a larger heater simply works less hard. An undersized heater, on the other hand, runs flat out all night and still leaves guests cold.

If you are unsure, the easiest thing is to share your marquee size, layout, date and guest numbers with us. We can recommend the right package and, where needed, visit the site to check where the heater, fuel and ducting will go.

What should marquee heater hire include?

When you compare quotes for marquee heating, check exactly what is included. A low price can look appealing until you discover that fuel, set up or the thermostat are extra. A complete package should cover:

• Delivery and set up. The heater positioned safely outside, ducting run into the marquee and everything tested before guests arrive.
• Fuel. Enough for the hire period, with extra available if your event runs over or the weather turns.
• A thermostat. So the marquee stays at a comfortable temperature without anyone having to keep adjusting it.
• Power for the heater. Indirect heaters need a small electrical supply to run the burner and fan. Make sure this is part of your power plan, especially if you are using a marquee wedding generator.
• Support during the hire. Someone to call if anything needs attention, at any time of day or night.
• Collection. Everything taken away afterwards, with no mess left behind.

At Christopher James Events, our marquee heating packages come delivered and set up ready to use, with fuel included for the hire period and a thermostat fitted, backed by 24/7 support while the equipment is on hire.

Book heating, power and lighting together

Heating, power and lighting are closely linked. The heater needs power, the power plan needs to know about the heater, and everything needs to fit around the marquee layout. Booking them from one supplier means one plan, one site visit and one team on the day. It also tends to keep costs down, as we explain in our guide to marquee lighting and power costs.

Keeping everyone safe

Heating equipment at an event should always be installed by people who know what they are doing. A few things a professional team will take care of:

• Position. The heater sits outside the marquee, on stable ground, away from guest routes, exits and anything flammable.
• Ducting. Warm air is directed into the marquee at a sensible point, not blasting onto a table or the top table.
• Fuel storage. Fuel is kept safely and refilled by the team, not by guests.
• Cables and hoses. Run neatly and protected so nobody trips over them.
• Checks. Equipment that is regularly maintained and tested before every hire.

It is also worth letting your marquee company know that you have booked heating. They can plan where the duct enters the marquee and leave a suitable gap or panel. If you are still choosing a marquee supplier, our guide on what to look for when hiring a marquee company covers the questions to ask.

Heating the outdoor spaces too

Guests rarely stay inside the marquee all evening. They drift out to the terrace, gather by the bar, step outside for fresh air or head to the smoking area. Those spaces can feel cold quickly, and they are often where the best conversations happen.

This is where outdoor heating hire comes in. Fire pits are a real favourite. They give off a lovely warm glow, look beautiful in photographs and naturally draw people together. Toasting marshmallows by the fire is a simple touch that guests remember. Our fire pits are available as dry hire, or with fuel included so you do not have to think about it.

Patio heaters can also work well in sheltered outdoor seating areas. For more ideas on keeping guests warm outdoors, take a look at our earlier article on portable event heaters.

Do not forget the lighting

A warm space only feels inviting if guests can see where they are going. Festoon lighting, lit pathways and a gently lit seating area make the outdoor spaces feel like part of the event rather than an afterthought. Combine them with heating and you effectively add extra room to your venue.

Marquee heating at a glance

• Indirect fired heaters: the standard choice for medium and large marquees. Powerful, fume-free inside, thermostat controlled.
• Electric heaters: good for small spaces such as bar tents and reception areas, but power hungry for large marquees.
• Fire pits and patio heaters: for terraces, outdoor seating and smoking areas, never inside the marquee.
• Sizing: based on marquee size, walls, floor, season, guest numbers and entrances. A little extra capacity is better than too little.
• A good package includes: delivery, set up, fuel, thermostat, power for the heater, support during the hire and collection.
• When to book: as early as possible for peak summer and autumn weekends.

Frequently asked questions

Do I really need heating for a summer marquee wedding?

Very often, yes. Summer days can be warm, but clear evenings cool off quickly and a marquee holds little heat. A heater with a thermostat only runs when it is needed, so it is a safe precaution that keeps guests comfortable if the temperature drops.

Will the heater be noisy?

Indirect heaters sit outside the marquee, so the noise stays outside too. Inside, you will mostly notice a gentle flow of warm air. We position the heater away from speeches and the top table wherever possible.

Does marquee heater hire include fuel?

It should, so check every quote carefully. Our marquee heating packages include fuel for the hire period, and extra fuel is available on request.

Can I use a patio heater inside a marquee?

No. Patio heaters and open flame heaters are designed for outdoor use and need plenty of open air. Inside a marquee, use an indirect fired heater that keeps the fumes outside.

How far in advance should I book marquee heating?

As early as you can, particularly for weekends between May and October, when demand is highest. Booking alongside your power and lighting also makes it easier to plan everything around the marquee layout.

Book marquee heater hire with Christopher James Events

Christopher James Events is a family run production support company helping private clients, wedding planners and marquee companies across Kent, Sussex, Surrey and the South East deliver exceptional events. We look after heating, power, lighting, audio, staging and event crew, so you can have one trusted team for everything behind the scenes.

If you are planning a marquee event, tell us about your date, venue and guest numbers and we will put together a clear quote with no hidden charges. Get in touch with our team for a free, no obligation quote, or explore our full range of event hire services.