HydroMX System Volume Estimator

Start estimate

Client / site nameOptional, but useful for quote output. Email findings toOptional. Opens a pre-filled email draft. Select application

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Commercial system

Boiler kW, cascade and system type method.

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Domestic property

Radiator lookup, pipework factor and UFH method.

Commercial estimator

Number of boilers

Boiler size each, kW

Boiler arrangement Cascade / staged — normal assumption Single boiler / all boilers normally duty Clearly oversized cascade Old / struggling system Building / system type Typical commercial / school Modern compact system Older steel pipework Hospital / large estate Emitter type Radiators / typical emitters Fan coils / AHUs Underfloor heating Mixed emitters Unknown

Optional commercial sanity check

Approx. heated floor area, m²

Calculate commercial volume

Domestic estimator

Property / pipework condition Typical domestic pipework Modern compact system Older / extended property Large or uncertain pipe runs Converts radiator water content into realistic system volume by allowing for pipework. System type Combi boiler System boiler + cylinder Open vented / header tank Unknown RadiatorsBased on radiator height + type lookup, then multiplied by length.

Add radiator

Optional UFH / fan coil additions

Underfloor heating area, m² UFH pipe spacing / allowance Standard UFH — 1.0 L/m² Loose spacing — 0.75 L/m² Tight spacing — 1.3 L/m² Fan coil / other known plant volume, litres

Calculate domestic volume

System condition and install controls

Magnetic filter fitted? UnknownYesNo

Deaerator / air separator fitted? UnknownYesNo

Sludge / cold spots / circulation issues? UnknownNo known issuesSome evidenceSignificant evidence Fill water condition UnknownClean softened / treated water availableHard water supply

HydroMX must be installed with clean softened / treated water. If hard water is present, use pre-mixed solution delivered to site.

Estimated output

Estimated system volume-

HydroMX required at 50%-

Water / balance volume-

Practical estimating range
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Confidence
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System condition / cleaning note
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Installation requirement
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This is an estimating tool, not a final design calculation. Final HydroMX quantity should be confirmed by measured fill, drain-down volume, pressurisation records, pipework review, or refractometer checks after dosing.