🔧 Plumbing & Heating

16 calculators

Boilers, cylinders, underfloor heating, pipe sizing and radiators.

Cylinder capacity by occupants and recovery time.

kW output by bedrooms, radiators and hot water demand.

Pipe spacing, loops and manifold sizing for UFH systems.

BTU output per bathroom and towel rail sizing.

Total heat load, pump sizing and expansion vessel.

Pressure, flow rate and expansion vessel for unvented systems.

TRV count, types and placement per room.

Cold water storage and header tank sizing.

Fixture count by building type and use.

Stack sizing and branch connection requirements.

Pipe diameter by appliance load in kW.

Tank size, catchment area and demand for rainwater systems.

Pipe diameter and flow rate to BS EN 806.

Heating and cooling load by room dimensions and building fabric.

BTU output per room based on dimensions and insulation.

Air changes per hour by room type and occupancy.

Upload your construction drawings to PlanScan AI and get complete material schedules, quantities and cost estimates in minutes — not hours.