The Grant Aero 18 Litre Sealed System Kit includes a 18 litre expansion vessel, filling loop, pressure gauge, PRV and air vent. Grant's sealed system kits are designed to suit all Aero heat pump models including this kit which is for a 18 Litre Sealed System.

• Sealed system kit suitable for installation with all Grant air source heat pumps
• Includes : 18ltr expansion vessel, filling loop, pressure gauge, PRV, air vent
• Available in 3 sizes - 12ltr and 50ltr sealed system kits also available
• It is required that a sealed system kit is fitted with Grant Aero ł heat pumps
• This 18ltr sealed system kit is supplied in Grant's Installation Packs A, B & C