Design & Installation
From small split systems to large VRV, VRF and multi-split installations, plus close-control units for IT and comms rooms. Every project co-ordinated to leave your operation undisturbed.

Three decades designing, installing and maintaining air conditioning and ventilation systems for the spaces where comfort and uptime are non-negotiable.

Barrett Environmental Services Ltd was founded in 1994 by Managing Director Steve Barrett, who has spent his career building a reputation for quality, reliability and professionalism within the field of air conditioning.
We design, supply, install, service and maintain air conditioning, ventilation plant, ducted systems and close-control units for IT and computer rooms — alongside the full set of associated mechanical accessories.
Recognised dealers and installers with Daikin, Mitsubishi Electric (A1 accredited), Toshiba (Qualified Installer) and Stulz — plus many other market-leading brands.
Every job — from a single split unit in a Mayfair office to a close-control deployment in a Slough data hall — passes through the same hands and the same standard.
From small split systems to large VRV, VRF and multi-split installations, plus close-control units for IT and comms rooms. Every project co-ordinated to leave your operation undisturbed.
Engineers available 24 hours, 365 days. Choose same-day, next-day, or a four-hour response window — tailored to the risk profile of your site.
Preventative schedules that protect your manufacturer warranty (typically three years) and extend the working life of every system we touch.
Ducted air conditioning, ventilation plant and associated mechanical services for commercial, industrial, retail, leisure and domestic environments.

Site visits and quotations are provided free of charge and without obligation. Tell us the postcode and the problem — we'll do the rest.