12
900
Rules of thumb, not gospel. A cracked heat exchanger changes the answer instantly; a one-off part failure on a young system rarely does.
Our honest read
—
×5,000 ruleage × repair cost
⅓ rulerepair vs replacement price
Estimates are a start. Quotes are a promise.
A free site visit turns this ballpark into a written, itemized price you can hold us to.