Replacing Your Boiler??
Older boiler systems had efficiencies in the range of 56% – 70% usually systems over 20 years old. Modern boiler systems can reach efficiencies as high as 97%, converting nearly all the fuel to useful heat for your home. Energy efficiency upgrades and a new high-efficiency boiler system can often cut your fuel bill and your boilers pollution output in half.
Upgrading your boiler from 56% to 90% efficiency in an average cold-climate you will save 1.5 tons of carbon dioxide emissions each year if you heat with gas. If your boiler is old, worn out, inefficient, or significantly oversized (usually after remodel), the simplest solution is to replace it with a modern high-efficiency model.
Old coal burners that were switched over to gas are prime candidates for replacement, as well as gas boilers with pilot lights rather than electronic ignitions and or large exhaust systems – this is usually a good sign of high gas consumption. When shopping for high-efficiency boilers, look for the ENERGY STAR label. If you live in a cold climate, it usually makes sense to invest in a high-efficiency system if at all possible.