Weather-adjusted gas reduction for heating and hot water. The unadjusted reduction was 20.5%.
One month
November 2025 compared with November 2024.
An individual OH4 installation result. This is not a forecast for your building.
What was installed
Sherwoods FM installed the OH4 system at Exmouth House on 21 October 2025. The first full month of available data was November.
The report separates the change in recorded gas consumption from the weather-adjusted comparison.
The evidence behind the result
| Source data | The care home’s gas metering for heating and hot water. |
|---|---|
| Baseline month | November 2024: 2,904 m³ of gas. |
| Comparison month | November 2025: 2,308 m³ of gas. |
| Unadjusted reduction | 596 m³, or 20.5%. |
| Weather data | 296.8 degree days in November 2024 and 327.9 in November 2025, using degreedays.net data. |
| Reported adjusted result | 813 m³, or 28%, for the first full month. |
This is an early result from one month. It is not an annual saving or evidence of sustained performance across all seasons. A longer agreed assessment period is needed for your own 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 same month is compared year on year. Read the source calculation alongside the raw gas readings and weather data.
Plan a fair comparison
Discuss how much historical meter data is available for your home and how comfort and operation will be checked during a pilot.
Review the installation and measurement plan
Related evidence: Ablecare’s full-year case study · All case studies