Of or relating to the production of sound through the mouth: the vertebrate vocal organs; a vocal defect. 2. Uttered or produced by the voice: vocal sounds. 3. Full of voices; resounding: a playground vocal with the shouts and laughter of children.
It depends on how old your furnace is and the cost to get a new furnace. A good rule of thumb is, no matter the age of the furnace, if the cost to repair is 50% of the cost of a new furnace, you should replace it. But for less expensive repairs, you should be less resistant to replacing the furnace the older it is. So if the furnace is 20 years old, and the cost to repair the furnace is only 10% of the cost of a new furnace, you should probably replace it (because itâs more likely to break down again soon).
Joe Mancini of Mancini Heating and Air Conditioning says a furnace less than 10 years old doesn't need annual maintenance. 1  He adds a typical furnace should last 20 years without any major problems, if you follow some easy steps like: 2  Replacing the air filter every three months. 3  Cleaning the blower compartment every year.