
Inside Roto-Rooter's $90 Lead Math: How an AI Answering Layer Changes Home Services
Incoming call · burst pipe
Emergency · after hours
Job booked
Tech dispatched · 8:00 AM
Roto-Rooter is the largest commercial and residential plumbing and drain cleaning provider in the United States: $899.9 million in fiscal 2025 revenue as a segment of Chemed, coverage reaching more than 90% of the US population, and a network that runs through corporate branches plus 361 franchisees and 72 independent contractors who staff their own phones. It spends $83.1 million a year on advertising, much of it billed per click and per call. The phone is the business.
Its own executives have published the economics of that phone with unusual candor. On earnings calls across 2025 and 2026, leadership reported leads down 7.2% year over year, paid search climbing past half of all leads, a Google Maps visibility collapse from 72% to 24% before a partial recovery, and the CEO's plain summary: 'the phone is not ringing like it did in the past.' The CFO put numbers on every ring: roughly $90 per paid lead, 1.5 to 2 leads per paying job, $150 to $180 of acquisition cost per booked job.
Now set those numbers against how the industry handles the calls it pays for. Invoca's benchmark across 60 million home-services calls found only 55% of callers reach a live person, and on the calls that connect, staff ask for the appointment only 44% of the time. ServiceTitan's data across 3,000+ trade businesses puts the average booking rate at 42%, collapsing from 61% at the morning peak to 21% after 6 PM at large shops, and 9% at small ones. On weekends, 41% of calls go unanswered entirely.
The exposure is sharpest exactly where the brand is strongest: emergencies. A burst pipe at 11 PM calls whoever answers, with drain clears at roughly $220 and sewer and excavation work running $1,500 to $5,000 and beyond. When 60 to 65% of the leads ringing the line were bought at $90 each, an unanswered call is not an abstract miss. It is spent budget dialing the next provider.
The industry numbers
Where the revenue leaks
The lead is paid for before the phone rings
Roto-Rooter's corporate call centers run 24/7 with humans on the line, and nothing public suggests they underperform. The exposure sits in the structure: 361 franchisees and 72 independent contractors answer their own phones, the industry around them connects barely half its callers, and the leads ringing those lines are increasingly bought. By the company's own math, 60 to 65% of leads are paid at roughly $90 each.
Run the vendor measured industry rates over 1,000 inbound calls (Invoca and ServiceTitan sell call software; their datasets are their own platforms, disclosed as such):
Invoca's 60-million-call benchmark: 55% of home-services callers get a human. The rest hit IVR loops, hold music, or voicemail, where fewer than 3% leave a message.
37% of answered calls are genuine service leads by Invoca's measure, and staff ask for the appointment on only 44% of calls.
46% of answered leads convert. ServiceTitan's cross-trade average books 42% of calls; its own 24/7 answering service books 64%.
Of the 450 unanswered calls, roughly 60% arrived through paid channels at about $90 a lead: $24,000 of sunk acquisition cost per 1,000 calls, before a single lost ticket is counted.
THE SYSTEM
For a trades network at this scale, and for every operator buying $90 leads, the Kaigen playbook puts an AI answering layer on every line, every hour, booking jobs straight into the schedule:
Every Call Answered Before the Third Ring
The AI answers overflow and after hours calls, triage the emergency, explain the free onsite estimate, and book the earliest slot directly into the schedule. No hold music, no voicemail, no caller hanging up to dial the next name on the list.
The 6 PM Booking Cliff, Removed
Trade booking rates fall from 61% at the morning peak to 21% or lower in the evening. An AI desk books at midnight exactly as it does at 10 AM. ServiceTitan's own 24/7 live answer service books 64% of calls; that is the bar an always on layer competes with.
Missed Call Rescue in Seconds
Any ring that slips through triggers an instant text back and an AI callback within the minute. Fewer than 3% of callers pushed to voicemail leave a message, so the text is the save, and the $90 lead stays in the funnel.
Estimate Follow Up That Always Asks
Open estimates get a next day call and text with the quote and a one tap confirm. Industry call data shows staff ask for the appointment on fewer than half of calls; the AI asks every time, and follows up until there is an answer.
Day by day
One emergency call, end to end
Modeled on the call flows the Kaigen team builds for home-services operators, from first ring to booked job.
The AI answers, triage the emergency (burst pipe versus slow drain), explain the free onsite estimate, and book the earliest slot.
A confirmation text with the appointment window and prep instructions, so the caller stops dialing competitors.
The job logged with address, issue, urgency, and source, attributed against the $90 lead that produced it.
Any ring that slips through triggers an instant text back and an AI callback within the minute, rescuing the lead before the next provider answers.
Open estimates get a follow up with the quote and a one tap confirm; unsold quotes get a scheduled second touch.
PROJECTED IMPACT
What an answered phone is worth at Roto-Rooter scale
Per 1,000 inbound calls: answers the 45% of callers who reach no one today, assumes half were never bookable, and applies Invoca's measured lead and conversion rates to the rest. Even at the $220 floor of a basic drain job that is over $8,000 in work, and it stops roughly $24,000 of paid lead spend from ringing into silence.
Treats unanswered callers like answered ones, which is how emergencies behave: the caller needs a plumber either way. Recovered work runs from $17,000 at the $220 floor into six figures as $1,500 to $5,000 sewer and excavation tickets enter the mix.
How we modeled this
This analysis uses Chemed's SEC filings and earnings calls for Roto-Rooter's economics, and platform datasets from Invoca (60 million+ calls) and ServiceTitan (3,000+ trade businesses) for industry rates, disclosed as vendor data throughout. Roto-Rooter discloses no job or call volumes, so the model runs per 1,000 inbound calls; the $90 per lead and $150 to $180 acquisition cost figures are the CFO's own, from the Q4 2025 earnings call.
The model assumes corporate call centers beat industry averages and locates the recoverable gap in franchise and contractor territories, overflow, and after hours windows. Popular stats that could not be traced to a methodology (85% of missed callers never call back; $1,200 per missed call; 43% of calls arriving after hours) are excluded entirely.
Invoca home-services benchmark (plumbing 56%); weekends run worse, at 41% unanswered per ServiceTitan.
The conservative scenario halves them; the midpoint treats an emergency caller as a job for whoever answers.
Invoca's measured rates on answered calls, applied unchanged to recovered calls.
Chemed CFO, Q4 2025 earnings call: 60 to 65% of leads paid at roughly $90 each, 1.5 to 2 leads per paying job.
Angi 2026 cost guides: drain clearing about $220, sewer line work $1,500 to $5,000+. No Roto-Rooter average ticket is public.
Staffed 24/7 centers are assumed to beat industry rates; the model targets franchise, contractor, overflow, and after hours volume.
Sources
- Chemed Corporation FY2025 Annual Report (SEC Form 10-K)
- Chemed Q4 2025 earnings call transcript
- Chemed Q2 2025 earnings call transcript
- Chemed Q1 2026 results (SEC Form 8-K exhibit)
- Invoca, Call Conversion Benchmarks Report: Home Services (2025)
- Invoca, the cost of missed calls in home services (2024)
- ServiceTitan, call booking rate data (2022)
- ServiceTitan, 24/7 customer service webinar data (2023)
- Harvard Business Review, "The Short Life of Online Sales Leads" (2011)
- Angi, plumbing and emergency plumber cost guides (2026)
- US Bureau of Labor Statistics, customer service representatives
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