Caravan fridge vents are essential external wall components that enable three-way absorption fridges to operate efficiently by creating proper airflow circulation. Our comprehensive range includes upper and lower fridge vents from leading manufacturers Dometic, Thetford, MPK and Dorset, available in white and black finishes with standard UK sizing. Upper vents allow hot air to escape whilst lower vents draw cool air into the fridge compartment, preventing heat buildup that causes poor cooling performance and increased energy consumption. Popular models include Dometic LS330 vents (480x185mm), Thetford vents (451x156mm cut-out), and MPK surface-mounted vents (360x135mm), all designed for easy installation with sliding clips or screw fixings.
These motorhome and caravan fridge vents are specifically engineered for absorption fridges that run on gas, 12V or 240V power sources. The upper vent must be positioned above the fridge cooling unit whilst the lower vent sits at floor level to create effective thermal circulation. Most vents feature angled slats and protective covers to prevent rain ingress whilst maintaining essential airflow. Installation requires precise rectangular cut-outs - typically 340x115mm for MPK vents, 365x140mm for winter cover compatibility, or manufacturer-specific dimensions for Dometic and Thetford models. Each vent includes mounting frames, external grilles, and eight fixing holes for secure wall attachment.
Winter covers for fridge vents become essential when ambient temperatures drop below 8°C, during winter storage, or when washing your caravan. These covers restrict excessive cold airflow that prevents the heat exchanger from reaching optimal operating temperature, improving fridge efficiency in cold conditions. Our selection includes genuine Dometic winter covers (440x130mm), Thetford covers (186x483mm), and universal covers in white or black finishes. One consideration is that poorly sealed vents can create minor draughts in windy conditions, though proper installation with adequate sealant around frames minimises this issue. Compatible with all major caravan manufacturers including Swift, Bailey, Lunar, and continental brands using standard European vent sizing.
Dometic Vents for Caravans and Motorhomes. Ventilation grilles for y
MPK Surface fit fridge vent. Width 360mm, height 135mm, eight fixing h
(5 reviews)
Fridge vent. Width 360mm, height 135mm, eight fixing holes. Cut out re
(4 reviews)
Fridge vent. Width 360mm, height 135mm, eight fixing holes. Cut out re
(4 reviews)
Winter Cover for 5039 Vent - White - 365mm x 140mm
(5 reviews)
Winter Cover for 5039 Vent - Black - 365mm x 140mm
(6 reviews)
Dorset Fridge Vent Pair. Pack of 2. Fit recess 355mm x 122mm
(1 review)
Winter cover for refrigerators and built in generators etc. 384mm x 2
Frequently Asked Questions
Why do caravan fridges need external vents when house fridges don't?Three-way absorption fridges work differently from domestic compressor fridges by using heat to create cooling rather than mechanical compression. They generate substantial heat that must escape to the outside environment through dedicated vents. House fridges have natural airflow around them and use much less heat, whilst caravan fridges are sealed inside cabinets and produce far more waste heat that requires forced ventilation to function properly.What size fridge vent do I need for my Dometic or Thetford fridge?Dometic fridges typically use vents with 480x185mm external dimensions, whilst Thetford fridges need 451x156mm cut-out apertures with 483x186mm overall dimensions. Check your existing vent frame or measure the cut-out hole in your caravan wall. Most UK caravans use these standard sizes, though some older Electrolux models and larger wheel-arch fridges may have different requirements. The vent brand doesn't need to match your fridge brand - Dometic vents work with Thetford fridges and vice versa.When should I use winter covers on my fridge vents?Use winter covers when ambient temperatures drop below 8°C, during winter storage, when washing your caravan, or whilst towing in cold conditions. Below 8°C, excessive cold airflow prevents the heat exchanger from reaching optimal operating temperature, reducing fridge efficiency. Never use covers above 8-10°C as this restricts essential cooling airflow. Some caravanners also fit covers whilst towing to reduce excessive wind flow over the vents that can disrupt the thermal circulation process.Can I install fridge vents myself or do I need a professional?Replacing existing vents is straightforward DIY work - remove the old vent frame, fit the new frame with sealant, and clip or screw the outer grille in place. Creating new vent apertures requires cutting through the caravan wall and ensuring proper sealing, which many owners tackle themselves with basic tools. However, any gas connection work must be done by a Gas Safe registered engineer. If you're unsure about wall cutting or sealing, professional installation ensures weatherproof fitting and maintains warranty coverage.Why is my fridge not cooling properly despite having vents fitted?Check that winter covers aren't fitted in warm weather, vents aren't blocked by external items like washing lines, and the caravan is reasonably level. Verify both upper and lower vents are clear of debris and properly positioned - the upper vent must be above the fridge cooling unit height. Poor cooling often results from inadequate ventilation airflow, particularly in hot weather above 25°C when additional fans may help. Also check your 12V supply provides full voltage at the fridge terminals, as voltage drop reduces heating element performance significantly.Are fridge vents waterproof and how do I prevent water ingress?Quality fridge vents have angled slats and protective covers designed to shed rainwater whilst allowing airflow. Water should only be directed over vents from above during washing - never spray water directly into vent openings as this can penetrate into your caravan interior. Proper installation with adequate sealant around the frame prevents water ingress around the edges. If water does enter, it usually indicates damaged sealing or incorrect washing technique rather than vent design problems.Do I need both upper and lower vents for my caravan fridge?Yes, absorption fridges require both upper and lower vents to create proper thermal circulation. The lower vent draws cool ambient air into the fridge compartment whilst the upper vent allows hot air to escape, creating a natural convection current over the cooling unit. Without both vents, the thermal circulation fails and your fridge cannot cool effectively. Compressor fridges can operate without external vents, but three-way absorption fridges absolutely require this dual-vent ventilation system to function.
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