This sad & controversial Analysis is based upon the empirical measurements of 60 months continuous data logging. Even when comparing equivalent daily Ambient versus equivalent Heat Profile Loading across disparate locations by equally diligent high-quality installations, the conclusions were decisive: Heat Pump COPT’s were degrading steadily per annum whilst running costs on input Maintenance & Operating costs (MOPEX) were escalating. There were winter SCOP’s predicted at 3 to 4 now barely logging 2.2 and finally reducing performance year by year to <1.55.

When moving parts CAN break-down; they WILL break-down…sooner or later. When correctly designed this must NEVER require a “Return to Factory”. The “Lowest Life Cycle Cost (LCC)” involves a monobloc ASHP (water-cooled chiller life-span normally at 20-30 years & HMRC NAV amortization @ <6years) to be designed with a larger “footprint” for an overall larger “Enclosure volume” than a standard “compact”designed, residential H.P:..............

Our early years of R&D, across the Japanese islands of 1970’s, evolved our engineering expertise for an absolutely secure anchoring technique (on both rooftops & now solar Façade-curtain walls) of Ren.Energy .devices onto variable exterior building envelopes. This demanded resilience to the highest cyclonic wind loading and also for Historic & Heritage structures in an earthquake zone.