Radius rings buy clicks from the far side of I-285 at four in the afternoon
A circle drawn around your yard is a promise your dispatcher cannot keep during the hours homeowners want appointments.
Distance is the wrong unit here. Twenty miles north at ten in the morning is a comfortable trip. The same twenty miles at four means an estimator loses the rest of the day, and the homeowner is annoyed before the tape measure comes out.
Build the targeting from named cities and ZIP codes grouped into drive-time bands from the yard, not from a mileage ring. Bid the close band hardest, the middle band at a discount, and leave the far band off until a route already puts a crew nearby.
Set location targeting to people in your area rather than people merely interested in it. The looser setting buys clicks from out-of-state owners and researchers.
Dayparting is worth testing against the same logic. If nobody can service an appointment request that lands at five, ask whether the far band should be bidding at all in the late afternoon.