Wren Kitchens

When a critical commercial site suffers a sudden power interruption, the immediate priority is asset stabilisation. Following a recent power cut at the prominent Wren Kitchens showroom in Paisley, our HVACR team was rapidly deployed on an emergency call-out to investigate localised climate control failures.

Upon arrival, our engineers conducted comprehensive diagnostics on two independent, legacy split air conditioning networks, identifying that four indoor fan coil units (FCUs) were entirely non-operational.

Engineering Diagnostics & The Core Challenge

Deep fault-finding procedures revealed that the severe electrical surge from the power cut had critically damaged the external Printed Circuit Boards (PCBs).

Because the existing equipment was 14 years old, the client was faced with an operational crossroads:

• Procuring obsolete replacement parts for aging hardware running on R410A refrigerant (a gas rapidly escalating in cost due to strict, ongoing global phase-out quotas).
• Executing a strategic upgrade to modern, high-density infrastructure designed for long-term commercial output.

Liaising transparently with our intermediary client, Penguin FM, we presented a detailed commercial roadmap outlining the economic risks of maintaining the legacy units versus the immediate sustainability returns of an upgrade. Backed by this data, the decision was made by Wren Kitchens to bypass short-term patches and completely replace the broken assets.

Technical Execution

Operating efficiently to minimise disruption to the live retail environment, our HVACR team executed a complete, clean strip-out and modern installation:

• Hardware Replacement: Dismantled and safely disposed of the two failed outdoor compressors and the four corresponding indoor FCUs.
• Infrastructure Upgrades: Upgraded the legacy structural pipework networks completely to match the pressure and thermal characteristics required by modern technology.
• Rigorous Testing Protocol: Conducted high-pressure nitrogen strength testing, deep system evacuation to remove moisture, and precise additional refrigerant trims to confirm optimal operational pressures.
• The Transition to R32: Commissioned the new systems utilising next-generation R32 refrigerant, maximising thermal capacity while drastically lowering the asset’s direct environmental footprint.

Operational ROI & Sustainability Impact Matrix

• Future-Proof Asset Protection: By proactively migrating away from R410A, Wren Kitchens eliminates vulnerability to the skyrocketing maintenance and supply costs driven by the F-Gas phase-out regulations.
• Energy Efficiency Gains: The new R32 architecture significantly lowers electricity consumption per kilowatt of cooling/heating output, instantly reducing the showroom’s ongoing operational overheads.
• Extended System Lifespan: The brand-new system completely resets the asset lifecycle clock, guaranteeing reliable, prolonged climate comfort for both staff and visiting showroom customers.

By moving past standard “break-fix” maintenance and acting as genuine strategic partners, we helped Wren Kitchens transform an unexpected electrical failure into a major victory for their corporate sustainability goals.

By executing all diagnostics, pipework modification, and gas commissioning under one roof, our HVACR team has set a clear benchmark for responsive, commercially minded retail engineering.