Condensing boilers produce water vapour during combustion, the water vapour condenses and latent heat passes into the system. Acidic water known as ‘condensate’, is produced. If the condensate is pumped straight to the drain, it can have a harmful effect on the environment.



CalDensate is designed to treat the acidic waste produced by condensing boilers. The tough, non-corrosive, in-line unit is quick and easy to fit. There is no need to dig a condensate trap. CalDensate is so versatile; it can be fitted with all makes of condensing boiler – even those that are situated above ground floor level. The acidic waste from condensing boilers (condensate) damages the environment. Dealing responsibly with condensate is easy with CalDensate.


  • Robust in-line unit
  • Complete with push-fit fittings for use with acidic water
  • Acid compatible – will not corrode
  • Unique cartridge refill
  • Suitable for installation with all combination boilers
  • No need to dig condensate traps
  • Perfect for boiler installations above ground level
  • Environmentally friendly unit and refill — less acidic and less landfill waste
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CalDensate Specification
Length200mm (including fittings)
Diameter55mm (max)
MaterialAcid Compatible - will not corrode
FittingsPush-fit adapted for use with acidic water discharge
Maximum working pressure5 bar (70 psi)
Maximum temperature80 °C
Maximum flow rate1.08 l/sec (14gpm)
ConsumablesDensate R Cartridge replaceable every 12 months

CalDensate Replaceable Cartridges

The unique replaceable cartridges for CalDensate makes the unit even more environmentally friendly. Replacing the special cartridge does not require the complete replacement of the CalDensate unit and the cartridge only needs to be replaced every 12 months. Ask for the Densate R cartridge.



The CalSoakaway has been designed to fully conform to the latest regulations and has been manufactured to the highest possible standards using the latest material that will not degrade when in contact with acidic waste. The durable housing has the recommended number of outlets for the acidic waste to disperse from the calcium carbonate whilst the universal cap provides installations to cope with 22mm, 35mm and 42mm condensate pipe. This ensures that the product is easy to install, saving time and money, whilst providing the confidence to installers that they are meeting the current regulations.


  • Total acid protection
  • 10 year warranty
  • No replacement needed
  • Lasts the lifetime of the boiler – based on boiler replacement scheme
  • Simple to install and easy discharge
  • No need to dig condensate traps
  • Compatible with 22mm, 35 mm and 42mm condensate pipe
View Brochure View and download the Brochure