The “best” new van for a heating engineer is usually a medium panel van with strong payload, a sensible roof height for racking, and a layout that keeps parts organised and secure. For many UK heating installers that means something like a Ford Transit Custom, VW Transporter, Vauxhall Vivaro/Peugeot Expert/Citroën Dispatch, or Mercedes Vito in the right spec — but the best choice depends on whether you carry boilers and cylinders daily, how often you tow, and where you work (ULEZ/Clean Air Zones).
Size: small, medium or large?
Medium vans are the sweet spot for most: easy to park on estates, enough load length for ladders/pipe, and typically 1.0–1.4t payload depending on spec. If you regularly move boilers, cylinders and heavy toolboxes, check the payload on the exact trim (auto gearboxes, 4×4 and high-spec interiors can reduce it).
Large vans (e.g. Transit, Sprinter, Movano/Boxer/Relay) suit boiler swaps and bigger stock, but cost more to run and can be harder in tight streets. Small vans work for servicing-only engineers, but you may quickly outgrow them once you add racking and spares.
Key spec choices that matter on the job
Roof height: a higher roof makes racking and access easier, but adds wind drag and height restrictions (some car parks).
Side door(s): twin sliding doors can be a game-changer for safe kerbside loading.
Power & towing: if you tow a trailer, confirm the van’s braked towing limit and your licence/weight compliance.
Diesel vs electric for heating work
If you work in or near ULEZ/Clean Air Zones, a new Euro 6 diesel is generally compliant, but always check the specific zone rules as policies can change. Electric vans can be ideal for city-based servicing with predictable mileage and overnight charging; they may qualify for the Plug-in Van Grant (currently up to £2,500 or £5,000 depending on GVW, subject to OZEV review).
Two quick follow-ups to ask yourself
1) What’s your heaviest “typical day” load? Add racking, passengers, tools, parts and waste — then choose payload with margin.
2) How will you secure and insure the kit? Factory deadlocks, bulkhead, alarm, and a well-planned racking system often matter as much as the badge.