How to Heat a Static Caravan: Systems, Costs and Practical Tips

A static caravan can feel every bit as cosy as home, provided it’s heated properly. Get it right and you’ve got a snug retreat whatever the weather’s doing outside.

This guide covers the different static caravan heating systems, what they cost to run and the practical steps that make the biggest difference to comfort.

Key takeaways:

• Static caravans typically use one of two main heating approaches: wet central heating (like Alde) or blown air systems (like Truma), each with its own running costs and feel. Modern caravans with a well-maintained heating system can be cosy and comfortable in winter.
• The cheapest way to heat a static caravan usually comes down to good insulation and sensible habits, not just the heating system itself.
• Leaving the heating on low during winter, rather than switching it off entirely, protects pipes from freezing and can save money on repairs down the line. Of course, the temperature you opt for depends on if you plan on using the caravan in winter or just maintaining it ready for the warmer months.

The different types of static caravan heating systems

Wet central heating systems

A ‘wet’ central heating system works much like the central heating in a house: a boiler heats water, which circulates through pipes to radiators around the caravan.

Alde is the best-known brand in this space, and its systems typically use a mix of water and glycol, heated by gas, electricity or both. The result is even, quiet warmth throughout the caravan, plus hot water for showers and taps as a bonus.

Blown air heating systems

‘Blown air’ heating (Truma and Whale are the two big names) uses a fan to push warm air through ducts and vents around the caravan. It heats up faster than a wet system and takes up less space, though some owners find the warmth less even, with certain corners staying cooler than others.

Electric heaters and portable options

Portable electric heaters – fan heaters, oil-filled radiators, convection heaters – are a common backup or standalone solution, particularly in older static caravans without a built-in central heating system. They’re cheap to buy and flexible to use, though it’s worth checking your pitch’s electricity supply can handle the load, since caravan sites often cap usage at 16 or 20 amps per pitch.

Gas and LPG heating

Many static caravans run partly or entirely on LPG (liquid petroleum gas), stored in bottles and connected via a change-over valve. It’s an effective and widely used fuel source, though it does mean keeping an eye on gas levels and having a suitable, well-ventilated space to store bottles safely.

Underfloor heating and infrared panels

Static caravan underfloor heating is less common but does exist, usually fitted beneath laminate or vinyl flooring for a gentle, all-over warmth without visible radiators.

Infrared panels are another option worth knowing about: low-wattage, wall or ceiling-mounted, and better suited to caravans with limited electrical capacity than a full central heating system.

How much does it cost to heat a static caravan?

Running costs depend heavily on your setup: the heating system itself, your fuel source, insulation quality and how cold it is outside.

As a general rule, electric heating wastes very little energy – almost all the electricity going into the heater is converted directly into heat, right there in the room. Flick the switch, and nearly all the power you’re paying for becomes warmth. If your site includes electricity in the pitch fee, electric heating can end up feeling like the cheaper day-to-day option purely because you’re not paying separately for it.

Gas and LPG work differently: burning the fuel creates heat, but some of it escapes up the flue (aka the vent that carries exhaust gases safely outside) before it ever reaches your caravan’s air. Even so, gas is often cheaper per unit of energy in the first place, which is why it can still work out more economical overall despite the losses.

Static caravan heating systems compared	Gas / LPG	Electric
Efficiency	Loses some heat up the flue (vent)	Very little wasted – nearly all power becomes heat
Cost per unit of energy	Usually cheaper	Usually more expensive
Running cost per week (typical winter use)	Roughly £15–£35, more in a hard freeze	Roughly £20–£45, more with heavy use
Best when…	You want lower running costs and have a reliable gas supply	Electricity is already included in your pitch fee
Extra consideration	Requires safe gas bottle storage and regular servicing	Site electricity may be capped (e.g. 16–20 amps per pitch)

Installing a full central heating system, if your static caravan doesn’t already have one, typically costs from a few hundred pounds for a basic setup up to a couple of thousand pounds for a complete system with multiple radiators and a combi boiler.

Read more: The costs of owning a holiday home, like a static caravan.

What’s the ‘cheapest’ way to heat a static caravan?

Before reaching for a bigger heater, it’s worth tackling the basics:

• Draught-proof first. Fitting caravan-specific draught excluders around doors and windows reduces how hard your heating has to work.
• Keep on top of insulation. Double glazing and good underfloor insulation make a bigger long-term difference to running costs than almost any heater choice.
• Layer up before turning up the heat. An extra throw or thicker socks costs nothing and takes the edge off before you reach for the dial.
• Use thermostats and timers. Heating a static caravan efficiently is as much about when as how – a programmable thermostat avoids wasting energy heating an empty room.

Should you leave the heating on in a static caravan when you’re not there?

This is one of the most common questions static caravan owners ask, and the short answer is: yes, on a low setting, especially over winter. Leaving the heating off entirely in freezing weather risks pipes freezing and bursting, which is a far more expensive problem than a bit of background heating. 

Many owners set a frost-protection thermostat setting, which keeps the caravan just warm enough to prevent freezing without running full heating costs while nobody’s there.

Going out for the day while staying at the caravan – leave the heating on?

Generally yes, just on a lower setting rather than switching it off.

• Wet and blown-air caravan heating systems both take a while to get back up to full temperature from cold, so if you switch these off, you could come home to a chilly caravan and then have to wait for it to warm up.
• Letting the caravan cool right down for several hours makes condensation more likely to form on cold windows and walls when warm, moist air (from cooking, showers, breathing) meets a cold surface – a classic caravan damp trigger.

This is a different situation to leaving the caravan empty for days or weeks – a few hours out isn’t a freezing-pipes risk on its own, so turning the thermostat down rather than off is the sensible middle ground.

Central heating antifreeze for static caravans

If your static caravan has a wet central heating system, it likely already runs on a mix of water and glycol-based antifreeze rather than plain water. This lowers the freezing point of the fluid circulating through your pipes and radiators, protecting the system during cold snaps even if the caravan is left unoccupied. 

It’s best to check fluid levels and concentration periodically, ideally as part of an annual boiler service, rather than assuming it’ll look after itself indefinitely.

How to turn the heating on in a static caravan

The exact steps vary by system, but the general process looks like this:

• Check your gas or electricity supply is connected and switched on before attempting to start the system.
• Set your boiler or heating unit to the correct mode (many modern systems, like Alde, have a control panel with simple on/off and temperature settings).
• Set your thermostat to your desired temperature – start moderate and adjust rather than blasting full heat immediately.
• Check radiators are bled if you’re switching a wet system on for the first time after storage, since trapped air can stop them heating evenly.
• Give it time. Wet systems in particular can take a little while to reach full temperature throughout the caravan, especially after being off for an extended period.

If anything seems off – unusual smells, a boiler that won’t fire, or radiators that stay cold – get it checked by a qualified engineer rather than troubleshooting a gas appliance yourself.

Keeping your holiday home warm, whatever the season

Whether you’re settling in for a cosy autumn weekend or a proper midwinter escape, a well-heated static caravan or holiday home makes all the difference to how much you enjoy it. 

If you’re considering ownership, it’s worth understanding what’s typically included as standard, how running costs stack up over a year and how a static caravan compares to other types of holiday home before you commit.

Speak to our friendly team to see if owning a caravan on a holiday park would suit your lifestyle on 0344 558 0328.

FAQs: Static caravan heating systems for cosy winter retreats

What is a wet central heating system in a caravan?

A wet central heating system heats water (often mixed with glycol antifreeze) in a boiler, then circulates it through pipes to radiators around the caravan, much like a house’s central heating. Alde is the most recognised brand of wet system in the UK caravan market.

How do I get my static caravan ready for winter?

Getting ready for winter is really about protecting against freezing and damp: draining the fresh water system if the caravan will be unoccupied, checking your central heating antifreeze levels, having the boiler serviced, disconnecting and safely storing gas bottles if the park is closing, and removing soft furnishings that can hold moisture. A quick check of the roof and seals before the cold sets in is worth doing too. 

Read more: Our static caravan winter prep checklist.

How to insulate a static caravan from the inside?

Thermal curtains or blinds make a noticeable difference to heat loss through windows, and draught excluders around doors close off the gaps that let cold air creep in. Reflective foil fitted behind radiators helps direct heat back into the room rather than losing it through the wall, and a good insulated underlay beneath flooring tackles one of the biggest sources of cold in a caravan: the floor itself.

Are static caravans cold in winter?

They can be, particularly older or seasonal-use models without much insulation, but a well-maintained static caravan with double glazing, good underfloor insulation and a working heating system can stay comfortable through winter.

Can you leave the caravan heating on overnight?

Yes, and for many owners this is standard procedure in colder months, particularly on a low or frost-protection setting. Just make sure any portable heaters used overnight have safety features like automatic shut-off, and that fixed systems have been serviced recently.

Do you need to drain static caravan central heating in winter?

No – a sealed wet central heating system containing antifreeze should not be drained, as this disrupts the antifreeze balance and can damage the system or affect its warranty. What does need draining is the separate fresh water plumbing (taps, shower, toilet) if the caravan will be left unoccupied and unheated, since that’s the part at risk of freezing. Check antifreeze levels annually rather than draining the sealed system yourself.

What is the best heater for a static caravan?

It depends on what you need it for. A wet central heating system or blown air system suits whole-caravan comfort best, while a portable oil-filled radiator or infrared panel is a good, low-cost option for heating just one room or topping up an existing system on particularly cold days.

How much does it cost to install central heating in a static caravan?

Costs vary widely depending on the system and your caravan’s layout, ranging from a few hundred pounds for a simple setup to a couple of thousand pounds for a full system with a combi boiler and multiple radiators.

 Further reading

• What’s included in a self-catering holiday home?
• What’s different about caravan ownership compared to other types of holiday home?
• Holiday home site fees explained: do you pay all year?
• Top UK static caravan makers ranked 
• Why a holiday home is a great choice