MPs held a Westminster Hall debate on heat pumps on 17 November 2010.
Heat pumps extract heat from the ground or the air, and redirect it for space heating and hot water.
Opening the debate, the Labour MP for Blackley and Broughton Graham Stringer said he was "impressed" by their potential use in future energy needs.
However he warned that there needed to be "complete assurance" that the technology delivered on its promises.
Energy and Climate Change Minister Charles Hendry said that heat pumps offered "the prospect of an exceptional contribution to meeting the challenges and the goals" on reducing energy consumption.
But he agreed that consumers needed to understand what they are buying and got an "efficient" product.