Don't let your boiler get like this! Once it does, much of your heat is going up your boilers stack. Burners can lose their 'tune', and once they do, can begin to create soot. Once accumulation starts it rapidly builds until heat transfer is impacted. Every 1/8" of soot buildup on your boilers heat transfer area decreases heat transfer efficiency by 10%. That is huge in the current environment of nearly $3 fuel oil. Call us to get your heating system running as efficiently as possible and save your precious heating dollars today. Need to replace a boiler? call us. We will recommend the finest installers in the Interior. If you are in the market for an alternative to fuel oil, call us. We've been at the forefront of alternative heating methods in Alaska for over a dozen years.