🔧 Plumbing & Heating
16 calculatorsBoilers, cylinders, underfloor heating, pipe sizing and radiators.
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Hot Water Cylinder Calculator
Cylinder capacity by occupants and recovery time.
Boiler Sizing Calculator
kW output by bedrooms, radiators and hot water demand.
Underfloor Heating Calculator
Pipe spacing, loops and manifold sizing for UFH systems.
Towel Rail/Radiator Calculator
BTU output per bathroom and towel rail sizing.
Central Heating System Calculator
Total heat load, pump sizing and expansion vessel.
Unvented Cylinder Calculator
Pressure, flow rate and expansion vessel for unvented systems.
Thermostatic Valve Calculator
TRV count, types and placement per room.
Water Tank Calculator
Cold water storage and header tank sizing.
Sanitary Ware Calculator
Fixture count by building type and use.
Soil & Waste Pipe Calculator
Stack sizing and branch connection requirements.
BS EN 12056Gas Pipe Sizing Calculator
Pipe diameter by appliance load in kW.
Rainwater Harvesting Calculator
Tank size, catchment area and demand for rainwater systems.
Pipe Sizing Calculator
Pipe diameter and flow rate to BS EN 806.
BS EN 806HVAC Load Calculator
Heating and cooling load by room dimensions and building fabric.
Radiator BTU Calculator
BTU output per room based on dimensions and insulation.
Ventilation Rate Calculator
Air changes per hour by room type and occupancy.
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