Solarventi units are surprisingly efficient; the output from the larger SolarVenti units provides a substantial amount of free energy in the form of warmed air to the inside of any property. This free incoming energy supplements your existing space heating system, of whatever type, to a pleasantly surprising degree.

(A recent closely monitored SV30 installation installed in Victoria, Australia (similar climate to UK) reports energy savings of almost 35% over the winter quarter)

SolarVenti provides a valuable supplement to existing space heating systems – it is not intended to replace them. Those wise enough to use SolarVenti get a radical transformation of the internal atmosphere in their property and reduced energy bills too.
There have been horrendous price rises for gas and electricity over the last year and these are expected to continue for several years.