The best time to have your heating unit tuned is in the Spring. This allows us to schedule appointments much easier than in the summer and fall when we are busy installing new heating systems. Waiting until fall for your tune-up, may cause us to reschedule your appointment due to emergency calls. It is also better for your unit, due to some units don't run during the summer and may sit in a damp basement. This causes moisture to react with any residual carbon inside your unit and cause a acid effect, which can severely harm the metals causing premature wear.