Would a gas heating system of 13 years be considered as old?
How long in average does a heating system "live"?
How much are they, and where are the best ones on the market, what makes? Is there anyone one here with an idea on this? thank you

The forced air heating system is most commonly seen in residential structures. It works by heating air in a furnace and then forcing the air out into various areas of the home through installed ductwork and vents. It is also commonly known as a central heating system because it comes from a central point in the home, where it can be filtered, humidified, or dehumidified. The air can be heated with various methods, including electricity, natural gas, propane, or oil.

Heat system more than 10 years can give several problems, its coiling system might have some problem and its undersized duct too.

The radiant heat heating system is often praised for its ability to produce natural and comfortable heat in a home. In this system, heat is commonly delivered through a system of hot water tubes underneath the floor, although these tubes can also be installed in ceiling panels.