Vented hot water cylinder are gravity-fed from a cold water cistern tank, usually in the loft space of a property. The cold water tank is used to let trapped air to escape as well as acting as an expansion tank to accommodate the expansion of hot water. Because of this, a vented cylinder does not require the addition of an expansion vessel like the unvented cylinder. The cold water is either heated directly from an immersion heater within the cylinder or indirectly through the central heating boiler. Depending on the heating method you have a choice of an indirect vented hot water cylinder or a direct vented cylinder.

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Harlequin Heatstream HS 200DI - 200 Litre Direct

Product code: HS200DI

Harlequin Heatstream HS 200DI - 200 Litre Direct

Product Code: HS200DI

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£675.00 ex VAT
(£810.00 inc VAT)
Harlequin Heatstream HS 150DI - 150 Litre Direct

Product code: HS150DI

Harlequin Heatstream HS 150DI - 150 Litre Direct

Product Code: HS150DI

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£625.00 ex VAT
(£750.00 inc VAT)

Harlequin Heatstream HS 250DI - 250 Litre Direct

Product code: HS250DI

Harlequin Heatstream HS 250DI - 250 Litre Direct

Product Code: HS250DI

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£760.00 ex VAT
(£912.00 inc VAT)
Harlequin Heatstream HS 150IN - 150 Litre Indirect

Product code: HS150IN

Harlequin Heatstream HS 150IN - 150 Litre Indirect

Product Code: HS150IN

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£675.00 ex VAT
(£810.00 inc VAT)

Harlequin Heatstream HS 200IN - 200 Litre Indirect

Product code: HS200IN

Harlequin Heatstream HS 200IN - 200 Litre Indirect

Product Code: HS200IN

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£720.00 ex VAT
(£864.00 inc VAT)
Harlequin Heatstream HS 250IN - 250 Litre Indirect

Product code: HS250IN

Harlequin Heatstream HS 250IN - 250 Litre Indirect

Product Code: HS250IN

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£815.00 ex VAT
(£978.00 inc VAT)

Harlequin Heatstream HS 200TW - 200 Litre Solar

Product code: HS200TW

Harlequin Heatstream HS 200TW - 200 Litre Solar

Product Code: HS200TW

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£965.00 ex VAT
(£1,158.00 inc VAT)
Harlequin Heatstream HS 250TW - 250 Litre Solar

Product code: HS250TW

Harlequin Heatstream HS 250TW - 250 Litre Solar

Product Code: HS250TW

  • Delivery Options: FREE 48 Hour Delivery
  • Guarantee: 25 Year Guarantee
£1025.00 ex VAT
(£1,230.00 inc VAT)