Weather-adjusted gas reduction. The unadjusted reduction was 17%.
Two months
March and April 2026 compared with the same period in the previous year.
An individual OH4 installation result. This is not a forecast for your building.
Fitted while the hotel operated
The OH4 system was fitted in the hotel’s plant room in January 2026. The published case study records four hours of installation, with no downtime on heating or hot water and no disruption to guests, spa or restaurant operations.
Measurement began in March, after the intervening month.
The evidence behind the result
| Source data | The hotel’s gas metering. |
|---|---|
| Assessment period | March and April 2026. |
| Baseline | The corresponding period in the previous year. |
| Unadjusted reduction | 17% across the two-month period. |
| Weather-adjusted reduction | 16%, following a degree-day adjustment for the marginally warmer comparison period. |
| Published adjusted consumption | 77,517 m³ before and 65,114 m³ after. |
Two months of data are not a full-year assessment. The public summary states a weather adjustment; it does not describe an occupancy adjustment. Review guest numbers and other operational changes when assessing a hotel pilot.
Read the source
V1 Energy Solutions is a UK-based reseller of the OH4 Energy Saving System, working with clients worldwide. This published case study concerns an OH4 installation. The original report may name OH4 or its installation partner.
The reported percentages apply to March and April 2026 only. They have not been annualised here.
Assess your own hotel’s demand
Identify the heating and hot water meters and the operating information needed for a fair comparison. Start with a free survey, then agree a one-building pilot.
Review the installation and measurement plan
Related evidence: Headland’s full-year case study · All case studies