mission

Greentomato’s mission is to make the greatest possible contribution to improving the environment through education and an innovative approach to business.

We want to prove that green businesses can be viable and turn a profit, as that is the most compelling way to persuade others to follow suit.

We offer ways of doing what you do everyday in a way that is kinder to the planet – with no extra hassle and no extra cost. Whenever we can, we will even make it more pleasant, more efficient and cost less.

My boiler is 90% efficient; there is almost no room for improvement.

Truth: A “heat pump” can produce 4... read more

My boiler is 90% efficient; there is almost no room for improvement.


Truth: A “heat pump” can produce 4 units of heat for every unit of electrical input. Thus by a conventional definition it is 400% efficient, a big improvement on your boiler! (To avoid confusion, a different measure of efficiency called the Coefficient of Performance, or CoP, is used in heat pumps).


However, the really large fuel bill savings will come from insulating, airtighting and replacing windows in a house to mean that the boiler (or heat pump) does not have to produce so much energy in the first place.