GasSaver is a Passive Flue Gas Heat Recovery Device, part of a system that reuses heat from boilers that would otherwise be wasted.

GasSaver improves the efficiency of hot water production and saves fuel and money.

Passive Flue Gas Heat Recovery Devices or PFGHRDs

Without a GasSaver installed flue gases that escape to the atmosphere can exceed 60°C.

A Passive Flue Gas Heat Recovery Device reclaims much of this wasted heat, which means that the flue gases that vent into the atmosphere are therefore much cooler.

A heat exchanger is fitted around the flue coming from the boiler to heat up the mains cold water that is fed into it. GasSaver then stores the heated water in a tank for use later on.

Inside a passive flue gas heat recovery device

Benefits of Passive Flue Gas Heat Recovery Devices

  • Easy installation when you change your boiler
  • GasSaver on top or integral to your boiler
  • Cuts fuel bills
  • Most effective during winter when energy demands are highest
  • Can cut water consumption by 7%
  • Reduces carbon dioxide emissions by around half a tonne a year
  • Zero maintenance
  • Requires no mains electricity to operate

 

Passive Flue Gas Heat Recovery Devices are listed under SAP appendix Q with an independently assessed, additional energy saving rating.

A GasSaver passive flue gas heat recovery device

Check your boiler

Before buying one, check what type of boiler you have to see what savings are possible. Since 2005 the vast majority of gas boilers fitted in the UK have been more efficient, condensing boilers. However, the way energy labelling is done can be mis-leading as it does not take into account the energy lost, even by 'A' rated boilers, that can be re-used for domestic water production.

The GasSaver passive flue gas heat recovery device provides the only way to get maximum, nearly 100% efficiency from your boiler.

 

FIND GASSAVER BOILERS DOWNLOAD GASSAVER BROCHURE

A short video Showing how a passive flue gas heat recovery device re-uses wasted energy to heat domestic hot water.

 

Watch GasSaver Overview Video

Seasonal demand for hot water graph

Seasonal demand for hot water graph