EnerPHit retrofit and extension of 1960’s semi
Paul Testa Architecture is the company behind the modernisation and extension of this cold 1960’s semi into a warm, comfortable and generous home for a young family.
Paul Testa Architecture, based in Sheffield is the company behind the modernisation and extension of this cold 1960’s semi into a warm, comfortable and generous home for a young family. The small practice of environmentally conscious and design-led architects specialise in bespoke homes, extensions and retrofits, was well placed to see this project through to completion.
This project displays the versatility of the Showersave WWHR solution, as it can be used to retrofit existing buildings as well as in new build projects to help improve their energy efficiency.
The Showersave QB1-21 Waste water heat recovery system (WWHRS) was installed in the project. SAP calculations were not performed, but it is estimated that Showersave made 4kWh/m2 difference to the primary energy demand of this semi-detached home.
The homeowner learned about the benefits of Showersave via the product listing on Passivhaus Planning Package, which allowed for an informed decision to be made while comparing alternative products.
Our client would recommend installing the Showersave QB1-21 in a self build or renovation project, where the cost of water heating is likely to be significant.
Benefits
- Critical for Part L 2021 compliance and route to Future Home Standard.
- Low CAPEX and competitive £ per point in SAP.
- Lower cost alternative than other technologies, including MVHR, Solar PV and Triple Glazing.
- Can be kept in-line throughout whole house pressure test to > 20 bar, therefore no need to isolate.
- Showersave is a “fit and forget” technology, therefore requires little, or no maintenance.
- Only WWHRS designed, manufactured and distributed throughout Europe by a single company.
- Proven to cut running costs of heat pumps and increase the overall efficiency of space heating and hot water production.
- Embedded Carbon independently measured at 51KgCo²e using CIBSE TM65 methodology. Carbon recovery less than 6 months.
“As we’ve worked hard on delivering such an efficient space heating strategy with minimal losses, the energy demand created by hot water usage then becomes a very significant proportion of our usage. We decided that a simple waste water heat recovery (WWHR) system would be really useful”