Roger visits the Pipelife Academy in Cork, Ireland, to discuss heat pumps and renewable energy technology with Mike Geary.







Summary







Noise Concerns and Quiet Innovations







A significant obstacle to the adoption of heat pumps is noise. Many UK homeowners face planning permission issues due to sound levels. However, innovations like quieter fan designs in new units—especially the “media unit”—help meet stringent noise regulations.







Running Cost Misunderstandings







A recurring issue is complaints about higher electricity bills. This often results from misconceptions. Heat pumps are commonly installed in older, poorly insulated homes, leading to inefficiencies. Many believe removing their oil boiler will save £3,000 annually, which is misleading since electricity bills inevitably rise, though often less than perceived.







Design Matters in Retrofits







A key insight is that retrofitting heat pumps without upgrading insulation, windows, and heating controls leads to inefficiency. Pipelife only installs pumps after conducting thorough home assessments to ensure customer satisfaction, emphasising that heat pumps should be the last component in a retrofit.







Weather Compensation Benefits







Systems with weather compensation—where an external sensor adjusts water temperature based on outdoor conditions—achieve up to 30% cost savings. Many homeowners misunderstand lukewarm radiators as a problem, but it's a sign of optimised performance.







Proper Installation and Oversight







We must emphasise the importance of experienced and trustworthy installers. A full heat loss calculation, radiator sizing, and proper commissioning ensure long-term success. A good installer also teaches homeowners how to use their systems efficiently.







Heat Pump Behaviour and Efficiency







Heat pumps can heat water up to 65°C, but efficiency drops at higher output. A COP (Coefficient of Performance) of 3–4 over a year is typical. Systems are tailored for climate and house conditions to optimise performance.







Environmental and Behavioural Shift







With growing electrification—cars, ovens, and hobs—heat pumps may appear to be the biggest consumers, but broader electricity use is the real cost driver. Users must adapt to new heating behaviours and manage expectations regarding comfort and billing cycles.