I feel anytime they catch a heater repair is ideal.
Everything you study online about boilers says you should officially wash them. If you leave a heater dirty, then havoc ensues. A dirty heater can actually overheat & catch on fire. The air filter can only stop so much dust from going into the system, and once the dust gets in the inner workings & the surance struggles to maintain heat, there is your fire hazard. Another option is carbon monoxide. While the heater strains to achieve the temperature control setting, the heat exchanger can crack. This releases carbon monoxide into the home, which is a tasteless, smellless, & poisonous gas. The only way to detect it is through a carbon monoxide detector. The only way to avoid it is with regular heater cleanings. I am on top of it with heater service. I have a Terrell, TX heater repair & service corporation that is amazing. They show up on time & do routine repair once a year. They check for dust, rust, & coercion. They change my air filter, wash the inner workings, & 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 & labor. I was blissful to pay for it. I feel anytime they catch a heater 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 heater service is a smart investment every year. I enjoy all the benefits I get from it.