How much does garage door spring replacement cost?
In Richardson a single torsion spring fitted is an estimated $185 to $345, a matched pair an estimated $265 to $450, and an extension spring pair an estimated $155 to $275. Four measurements set the price: wire gauge, inside coil diameter, relaxed length and wind direction, read against the weighed door. A 25,000 cycle upgrade adds an estimated $60 to $120. Guide figures, not a quote.
The four numbers that set the price
Door weight decides the wire size, and wire size drives most of the cost. The technician takes four readings off the spring that failed: wire diameter in thousandths of an inch, the inside coil diameter, the relaxed length, and which way it was wound. Read against a weighed door, those numbers give one correct spring rather than a range of options. That is why a firm figure over the phone is a guess and the confirmed number comes at the door.
Why the pair goes on together
On a two-spring door both springs have run the same number of cycles, so the one still intact is usually months behind the one that snapped, not years. The tension is already off the shaft while the technician is there, so fitting the second one adds the parts cost and barely any labor. A second call-out three months later does not work out cheaper. If a quote prices one spring on a dual setup, ask why.
Where the cheap quote gets its money back
A price well under the band usually means a lighter spring than the door needs, no rebalancing by hand, and no reset of the opener force and travel limits afterwards. The door works that afternoon. It runs heavy from then on, and the opener pays for it in gear teeth. Ask what wire size is going on, whether balance gets checked with the carriage disconnected, and what warranty is written on the invoice.
Get a Straight Answer
Say what changed and when it changed. A sudden fault and a gradual one point at completely different parts.
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