Pulled from public trade-forum threads. The numbers above are calibrated against what shop owners actually say.
“I'm running a small residential plumbing operation (me + 2 guys) and we're constantly missing calls when we're on jobs. Last month I had 47 missed calls. Maybe 5 left voicemail… This is probably costing me $3-4K/month in lost work.”
— tdorsey · plumber, 3-person shop ↗The calculator estimates ~$3,300/mo lost for a solo plumber at 30% miss rate. His self-reported number matches.
“Before you spend money on a solution, figure out what those 47 calls actually are. 40 of them were telemarketers. 5 were customers that have used my services before. 2 were price shopping. There ya go, 47 calls.”
— TerryTotoSucks · plumber, replying in same thread ↗Exactly why we use 25% as the lost-job rate — most missed calls aren't real lost jobs.
“[Another vet wrote: 'In all those years I have missed a handful of calls.'] FIFY: 'In all those years I have missed a handful of calls THAT I KNOW OF.'”
— rewire · electrician, 36-yr emergency service ↗Callers who hang up without voicemail leave no trace. Your real miss rate is usually higher than you think.