Chapter 1: Your home at a glance
Start the journey with the shape of your home and daily water habits.
Property type
Occupancy & water use
Current system
Chapter 2: Heat pump hurdles
Spot the retrofit blockers with visuals before you dive deeper.
Heat emitter (before/after)
Pipework & wall space
Insulation level (EPC)
Water pressure test
Chapter 3: Priorities & budget
Set the trade-offs you care about most.
Cost priorities
Comfort preferences
Chapter 4: Household & alternatives
Capture change, urgency, and compare tailored alternatives.
Household dynamics
Property details
💰 Whole-life cost inputs
Enter upfront costs to see total cost of ownership over time. Leave blank to skip cost analysis.
Calculate and compare total cost of ownership over the system lifetime, including installation, running costs, maintenance, and replacements.
Potential solution A
Potential solution B
Potential solution C
Potential solution D
This illustration is for guidance only and does not constitute financial advice, a quotation, or a heating system design.
Figures are derived from UK field research (2015–2025) on domestic water use, DHW efficiency, combi lag, cylinder losses, and installer-reported performance.
Values are indicative and should be confirmed by an on-site survey.