Free tools
Size it yourself, in a minute
The calculations our engineers do before every quote — pump duty points, softener cycles, hot water storage — free, with every formula explained. No sign-up, and every result has a link you can share.
Pump Sizing Calculator
Free pump sizing calculator: flow, head and motor HP to fill an overhead tank or boost pressure, with running/standby pumps and pressure tank size.
Open the calculator →Water Softener Calculator
Free water softener calculator: OBR (output between regeneration), how often to regenerate, salt per cycle and the resin volume your hardness and daily use need.
Open the calculator →Heat Pump Sizing Calculator
Free heat pump water heater calculator: the hot water storage tank and heat pump kW for your family, hotel or hostel, and what you save over an electric geyser.
Open the calculator →Rather have an engineer do it?
Tell us about your building — we'll size the system and send you a quote.