Case studies
Every figure below comes from real customers and real meter readings: measured consumption before and after installation, weather-adjusted where the data allows. No marketing maths. Each page includes the full published case study as a PDF.
The Headland Hotel: 19% verified, £50,453 saved in year one
19%
An iconic Cornwall hotel with a spa, Aqua Centre and 40 holiday cottages. Verified across a full year, adjusted for weather and occupancy.
Ablecare Homes: 27% verified, six-home rollout
27%
A verified energy saving at Belvedere Lodge, measured from the home's own meters, convinced the group to fit the V1 system across all six of its homes.
St Michael's Resort: 26.1% saving at a luxury spa hotel
26.1%
£8,917 saved in the first eight months, on track for more than £20,000 a year, measured per degree day per guest.
One Hotel Mayfair: 14.4% weather-adjusted in three months
14.4%
A luxury Mayfair hotel with serious heating and hot water demand: £16,330 saved in the first three months after a four-hour installation.
The Georgian House Hotel: 20%, exactly as promised
20%
A historic boutique hotel that was quoted 15–20% and measured 20% after twelve months. The installation cost was recovered within year one.
The Priest House Hotel: 21.3% on LPG and oil
21.3%
Proof the system is not just for mains gas: a historic rural hotel saved £5,242 in ten months across LPG and oil-fired plant.
Amica Care, Exmouth House: 28% in the first month
28%
A savings report from the first full month after installation: a 28% weather-adjusted reduction in gas for heating and hot water.
Devon Chamber of Commerce: 20% at the Chamber's own offices
20%
The Chamber measured a 20% reduction per degree day at its Plymouth offices from a one-hour installation on a single boiler.
Wearebauer Group: 16% at a low-use industrial unit
16%
A net-zero-focused landlord tested the system on a small unit heated only in office hours, and still measured a 16% reduction per degree day.
Dingley Dell: 18% at a house with a heated pool
18%
The same physics at domestic scale: two 30kW boilers, one house, one swimming pool, and an 18% weather-adjusted saving over a full year.
How to read these numbers: savings are measured from each client's own meters or fuel deliveries against a pre-install baseline, adjusted for degree days (and occupancy where relevant) so a mild winter can never flatter a result. The full methodology and data tables are in each case-study PDF.
The V1 system is the OH4 Energy Saving System, so client quotes and the full case-study documents refer to it as OH4.
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