Just like any other big appliance or major piece of equipment in your home, your heating system needs a certain amount of service to be able to continue functioning as best it can. An integral part of this is making sure you stay on top of your annual maintenance appointments (or bi-annual, if you have a heat pump).
We may be well into winter, but it really is never too late for this service—in the absence of a complete system breakdown—and scheduling your heating maintenance appointment as soon as you can if you haven’t done so in the last year will help keep your heater in good working order throughout its lifespan.