by Tom Morgan
Few heating systems last forever. They
may be replaced due to damage, or
because newer models offer greater energy
efficiency. But often parts of the
original system—piping, radiators,
ducts, or flues—are worth salvaging.
When tying the new system into existing
components, it's critical that the
new equipment be well matched to the
old. If not, the updated system will not
live up to its potential. In my work as a
commercial and residential home inspector,
I see three main types of systems:
steam, hydronic, and warm air.
Steam systems can be finicky and
their heating output difficult to finetune.
But they are common in older
New England homes and may be worth
upgrading with a