Essential Motorhome Maintenance Checklist for Winter

As temperatures drop and the camping season slows, now is the time to prepare your motorhome for winter. Whether you plan to store it away or keep travelling through the colder months, proper maintenance is essential to protect your investment and avoid costly repairs later. 

Freezing temperatures can cause serious damage to pipes and tanks. 

• Drain all fresh, waste and hot water tanks completely. 

• Leave taps open to prevent trapped water from expanding. 

• Add non-toxic antifreeze to the system if your motorhome will be exposed to sub-zero conditions. 

• Don’t forget the toilet flush system, it’s often overlooked. 

Cold weather reduces battery efficiency. 

• Fully charge both leisure and vehicle batteries before storage. 

• Disconnect or use a maintenance charger to prevent drain. 

• If possible, store batteries in a dry, frost-free environment. 

Moisture ingress is one of the biggest winter risks. 

• Examine window, door and roof seals for cracks or gaps. 

• Clean and treat rubber seals with a silicone-based lubricant. 

• Wash and wax the exterior to protect against salt, dirt and damp. 

Tyres can lose pressure and develop flat spots in storage. 

• Inflate tyres to the recommended pressure. 

• Move the motorhome occasionally or use wheel savers. 

• Check tread depth and sidewalls for cracking before your next trip. 

Stale air and condensation can lead to mould. 

• Empty and clean cupboards, fridge and food storage areas. 

• Leave cupboard doors and lockers open for air circulation. 

• Use moisture traps or dehumidifiers to keep the interior dry. 

If you’re not driving for a while: 

• Fill the fuel tank to reduce condensation. 

• Add a fuel stabiliser if the vehicle will sit for more than a couple of months. 

• Check antifreeze levels in the engine coolant system. 

• Run the engine occasionally to circulate fluids. 

• If parked outdoors, use a breathable, purpose-made motorhome cover. 

• Avoid parking under trees where sap and debris can damage paintwork. 

• If stored indoors, ensure the space is dry and well-ventilated. 

Winter storage often means long periods unattended. 

• Remove valuables and electronics. 

• Check that alarms, trackers and immobilisers are active. 

• Ensure insurance and MOT are up to date. 

If you plan to use your motorhome through the winter, reliable heating is essential. 

• Test your space and water heaters before the cold sets in. 

• Inspect gas hoses and regulators for cracks or wear. 

• Make sure vents and flues are clear of obstructions. 

• Have the gas system professionally serviced if it hasn’t been checked in the last year. 

A quick audit of your equipment now saves hassle later. 

• Check that your emergency kit includes a torch, spare fuses, first-aid supplies, and jump leads. 

• Replace outdated fire extinguishers or smoke alarm batteries. 

• Refresh bedding, cleaning materials, and winter-grade fluids (such as screenwash and coolant). 

• If you plan winter trips, pack snow chains and thermal covers. 

A well-maintained motorhome is ready for adventure, whatever the season. Taking the time to follow this winter maintenance checklist will protect your motorhome from the worst of the weather and save you headaches come spring. 

If you’re preparing for winter or planning upgrades before next season, Chelston Motorhomes offers expert servicing, parts, and accessories to keep your vehicle in top condition. Call our team for advice and support.