£1,545.00 ex VAT

  • Ideal for Crawlspaces – Ducting options available
  • 1 year Fullr warranty
  • Remote control equipped
  • Has Condensate Pump – can pump up to 4.5m Head
  • Size for up to 2600sq.ft
  • Sound level <55DBA
  • Functional Temp range 1 – 40 Deg C
  • Dehumidification is 90L at 30degC and 80% RH
  • AHAM (26Deg C / 60% RH) = 50L
  • Dimensions 630w x 450h x 400d (mm)
  • 240v option available
  • Weight 35.5kg

Click here to download spec sheet.




The Sentinel HDi90 Dehumidifier is ideal for crawlspaces, cellars and basements when condensate needs to be pumped out from low levels or where drainage is not available. It is robust, compact and versatile

The main benefits for all the Sentinel range is that the machines can be controlled remotely. A controller plugs into the unit via a Cat 5 cable. The controller displays the temperature and humidity in the environment that is being controlled.

The machine can be operated in two modes. Both the controller and the HDi90 unit have a Humidistat in them and you can set the controller to work from either humidistat.

Mode One: Controlling on the HDi90 Humidistat.

In this mode you could have your machine in the basement and control the humidity and monitor your basement conditions on the remote control unit which could be in a different room above the basement. You can alter the RH from the comfort of your living room!

Mode Two: Controlling on the remote control Humidistat.

In this mode you could have your dehumidifier outside the room space you want to control and duct the air to the room. This would work in a similar way to your central heating system and thermostat as you don’t have your boiler in the room (it is remote) but you want to control the temperature in the room via your thermostat.

Condensate is removed via a holding tank and pump which can operate up to 4.5m head. Standard protection incorporates a tank full switch to protect your work space in the event of a blockage in the condensate pipework.

Please go to the accessories page for the remote control unit and ducting pricing.