If your home has an older type of boiler that is more than 12 years old, it is not eco- friendly and wastes a lot of fuel. Yes, as gas or oil burns it releases a lot of CO2 into the atmosphere. Older boilers are only 65% to 80% efficient, but newer condensing boilers are over 90% efficient. So that means that an old boiler is wasting fuel and is costing you money. At GetAFreeBoiler.Co.UK we have boiler grants in Wales and heating grants in London which can enable you to get a new boiler installed for free! You will be eco-friendly and save money as well!