Everything you read online about boilers says you should properly wash them.
If you leave a boiler dirty, then havoc ensues.
A dirty boiler can actually overheat and catch on fire. The air filter can only stop so much dust from going into the system, then once the dust gets in the inner workings and the surance struggles to maintain heat, there is your fire hazard. Another opening is carbon monoxide. While the boiler strains to achieve the temperature control setting, the heat exchanger can crack. This releases carbon monoxide into the home, which is a tasteless, aromaless, and poisonous gas. The only way to detect it is through a carbon monoxide detector. The only way to avoid it is with respected boiler cleanings. I am on top of it with boiler service. I have a Terrell, TX boiler repair and repair supplier that is amazing. They show up on time and do routine repair once a year. They check for dust, rust, and coercion. They change my air filter, wash the inner workings, and inspect every itn top to bottom. Typically they find nothing. This most recent time there was just a small worn part. It only cost me about 300 bucks for the part and labor. I was cheerful to spend my money for it. I feel anytime they catch a boiler repair is ideal. That part could have actually graduated into total system failure. It is almost better when they catch something. That way I can justify it in my head that my boiler repair is a smart investment every year. I cherish all the benefits I get from it.