The Holiday Inn Express Royal Docks ran on an HVAC estate assembled over many years: around 40 condensers from three manufacturers serving 136 bedrooms, some dating to 2005, on R410A refrigerant with no shared controls. The mix meant no single contractor could service it. Plant had reached end of life, guest complaints were rising, and an impending R410A phase-out closed off any like-for-like repair.
Before any product decisions, ASG surveyed the building back-of-house over three weeks with no bedrooms offline, mapping pipe routes, risers and roof plant. The specified solution was Daikin Heat Recovery VRV on R32, a three-pipe system that captures surplus heat from rooms needing cooling and redirects it to rooms needing heat, on a refrigerant with far lower global warming potential than R410A.
All 12 condensing units were craned to the roof in a single lift before any bedroom went offline, so the roof programme ran independently of the bedroom phases. Bedrooms were released one phase at a time, 10 to 12 rooms each. When a roof fire alarm sounder failed outside ASG’s scope, the site team repaired it at no charge.
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