D Steven & Son Equips New Trailer with Vector HE 19 MT Unit

D Steven & Son Equips New Trailer with Vector HE 19 MT Unit

The most northerly haulage company on the UK mainland is celebrating its centenary with the delivery of a new Gray & Adams trailer mounted with Carrier Transicold’s flagship Vector HE 19 MT (multi-temperature) refrigeration unit.

Scrabster-based D Steven & Son, which also has depots in Aberdeen, Glasgow and Wick, has a long history of specifying Gray & Adams trailers with Carrier Transicold refrigeration units.

The latest delivery, part of an order for six trailers, stands out for being the first in the fleet to benefit from the latest generation Vector HE 19 MT unit – which improves fleet efficiency and sustainability. To mark the anniversary, the trailer’s rear barn doors carry the message ‘Servicing Caithness for over 100 years’.

“Being based in one of the most remote parts of Scotland means we need to have absolute confidence in the trucks and trailers we buy for the fleet,” said David Steven, managing director, D Steven & Son. “The Gray & Adams and Carrier Transicold combination works extremely well; we operate all the way down to mainland Europe and we enjoy superb reliability. There’s simply no need to look elsewhere.”

The new 13.6m single-deck trailer joins a fleet of 30 trucks and 50 trailers and will remain in service for the next five years, operating up to seven days per week.

“This is our first Vector HE 19 MT, and it should help us to achieve major performance advantages in almost every area – including a considerable improvement in fuel efficiency,” said David Steven Jr, director, D Steven & Son. “Plus, it’s around 50% quieter than the Vector 1950 we’ve been buying for years, so it’ll be particularly popular with our drivers.”

The Vector HE 19 also benefits from a fully hermetic scroll compressor and economiser which help to deliver a significant increase in refrigeration capacity during pull-down, while reducing the chance of refrigerant and carbon dioxide (CO2) escape, making it an environmentally sustainable choice. Customers can enjoy favourable savings on maintenance costs, thanks to a combination of the new features and extended service cycles. Carrier provides sustainable, effective refrigerated transport solutions for customers, part of its Healthy, Safe, Sustainable Cold Chain Program.

The trailer features high-gloss impact resistant five-element panels and is mounted on a heavy-duty twin member chassis, designed to withstand the demands of long-distance international haulage. Other features include a step neck chassis to reduce overall height, fuel saving vortex generator at the rear of the roof, fully waterproof aluminium floor surface and Michelin tyres as original equipment.

Get the daily refrigeration briefing

One email a day. Trusted by 3,000+ RACHP professionals.

Related news

Most read this week

All news →

Related insights

Article

Secop’s Solar Direct Drive (SDD) System Earns WHO PQS Approval – The Team Behind It

Partner's material In March 2026, Secop’s Solar Direct Drive Power Management Module was granted WHO PQS prequalification and officially listed in the WHO Catalogue of Prequalified Immunization Devices. The WHO IMD-PQS (Immunization Devices Performance, Quality and Safety programme) is the global benchmark for cold chain equipment used in immunisation. Being listed in its catalogue is

22 Jun 2026
Tech Guide

Case Study – Effect of Louvers or diffusers on air flow distribution and cooling time on a meat log during Chill cycle

By Kushal Aurangabadkar An experimental analysis was conducted on a cooler space measuring 3.66 m × 6.096 m (12.0 ft × 20.0 ft), equipped with an ammonia refrigeration coil, five 30 cm (12 in.) fans, and five diffusers. The study measured airflow patterns, cooling rates, and heat transfer efficiency in meat storage by testing two configurations:

Kushal Aurangabadkar · 21 Jan 2026
Tech Guide

Total Cost of Ownership (TCO) for Modular Refrigeration Systems in Life Sciences Distribution Centers

by Ramez Naguib, P.E. Introduction Life sciences distribution centers are under immense pressure to deliver consistent temperature control, comply with increasingly stringent regulations, and optimize operational efficiency. Traditional built-up refrigeration systems often prove cumbersome, costly, and slow to implement. In contrast, modular, factory-assembled refrigeration systems have emerged as a compelling alternative. Drawing on lessons from

14 Jan 2026