The 'Should have insulated more' Regret
The most frequent regret from new heat pump owners is underestimating the importance of insulation. While a gas boiler is fairly tolerant of heat loss, a heat pump operates differently. If your home isn't well-insulated – think cavity wall, loft, and good windows – a heat pump will struggle to maintain comfortable temperatures efficiently. Many assume their insulation is 'good enough' for a heat pump, only to find it's not. This leads to higher running costs and dissatisfaction, even with a perfectly installed system.
- Heat pump performance relies heavily on insulation.
- Gas boilers are more forgiving of heat loss.
- Poor insulation leads to higher heat pump running costs.

