Memberships die from friction, not from price
Almost nobody cancels a plumbing maintenance plan on purpose. They lapse. The annual flush doesn't get booked, nine months go by, the customer forgets they're paying for something, and the renewal gets declined. The revenue you spent a year building leaks out through a scheduling gap.
The only reliable fix is automation that fires at the close of the previous job, not a reminder on somebody's calendar. When the last visit closes, the next one generates and lands on the schedule. The membership fee bills on its own day. Nobody has to remember anything, which is the entire point.
Emergency work is a trust business
At 11pm in a flooded basement, the homeowner is not comparing prices — they are deciding whether to trust you. A tech who arrives knowing the water heater is a 2019 Rheem with eighteen months of warranty left, who quotes from a flat-rate book instead of inventing a number, and who takes payment cleanly on a phone, wins that house for the next decade.
All of that requires the record to be in the field, not the office. Equipment history, prior repairs, plan status, and pricing have to be on the tech's phone at the moment they matter. That's what separates a shop that grows on referrals from one that competes on being the cheapest number on Google.