Calculate Exactly How Much Your Missed Calls Are Costing You

Three inputs drive your missed-call loss. Understand them before you touch the calculator and the output will make sense instead of just feeling like a scary number.

Average job value. This is the revenue on the average job your business completes — not your highest ticket, not your lowest. For a plumber, the national median sits around $175–$650 depending on job type. For HVAC, $250–$1,200. Emergency calls almost always land at the high end. That is the number a missed call is erasing from your revenue.

Monthly missed-call volume. Not every unanswered call is a buyer. But a meaningful percentage are. The calculator uses a conservative estimate that 40% of your missed calls are active buyers with a real job in hand — not tire-kickers, not repeat existing customers, not wrong numbers. If you are running 20–25 inbound calls per month and missing 8–10 of them, that alone is $3,000–$6,000 walking out the door every month at median job values.

Close-rate differential. This is the one that hits hardest. When a homeowner calls a plumber at 9 PM and hits voicemail, they do not leave a message and wait. They open Google and call the next listing. Your close rate on an answered call runs 50–70% for emergency and urgent work. Your close rate when they hit voicemail is closer to 10–20% — and that is if they even try you again. The gap between those two numbers is your real loss.

Multiply all three and you have your monthly missed-call cost. The calculator does that math for you in seconds.

The calculator uses national median job values from published cost guides. Here is the source data, broken out by trade, so you can verify it yourself or substitute your own average if your market runs differently. Individual results vary by geography, business model, and service mix — a plumber in San Francisco commands different rates than one in rural Oklahoma.

Plumbing. According to the Angi Cost Guide for plumbing (updated 2024), typical plumbing jobs range from roughly $180 for a basic drain cleaning to $3,500 or more for a full repipe. The national average for a plumber service call runs approximately $175–$450. Emergency and leak-detection calls often land $500–$800. The calculator defaults to $650 as the plumbing median — a conservative mid-range figure weighted toward service and repair calls that dominate most residential plumbing businesses.

HVAC. The Angi HVAC Cost Guide (updated 2024) puts HVAC tune-ups at $75–$200 and full system replacements at $3,800–$8,000, with the national average for AC repair landing around $150–$650. The calculator defaults to $1,200 for HVAC — reflecting that most missed HVAC calls happen during peak season when average ticket values run toward the high end of the repair range, not the tune-up range.

Electrical. The HomeAdvisor Cost Guide for electrical work reports typical electrical jobs from $200 for a single outlet replacement to $4,500 or more for a panel upgrade, with the average electrician service call running $150–$500. The calculator defaults to $850 for electrical, weighted toward panel, circuit, and wiring work that constitutes the majority of missed-call scenarios.

These defaults power the calculator's out-of-the-box scenarios. If your average ticket is materially different — your HVAC business does mostly high-end installs, for example — override the default with your own number. The formula does not change. To see the full job value benchmark data by trade, including service-type breakdowns and regional variance notes, follow that link before running your numbers.

The dollar loss from missed calls is not just job value times number of missed calls. It is job value times the difference between what you close when you answer and what you close when you do not.

When you pick up the phone, you are talking to someone who already decided to call you. For emergency and urgent work — burst pipe, no heat in January, tripped breaker — conversion rates on answered calls run 50–70%. The homeowner needs someone today. If you answer, you are their contractor.

When they hit voicemail, the math changes fast. Research on speed-to-lead shows that odds of qualifying a prospect drop dramatically within minutes of first contact — a widely-cited study published in the Harvard Business Review found a 21x reduction in qualification odds when response time goes from under 5 minutes to 30 minutes or more. In home services, where the homeowner opens Google and calls the next three listings in sequence, the practical close rate on a missed call falls to 10–20%.

That 40–50 percentage-point gap is the engine of your missed-call loss. On a $650 plumbing job, the difference between a 60% close rate and a 15% close rate is $292.50 per missed call — before you even count the volume.

The calculator bakes in a 60% answered close rate and a 15% missed-call close rate as defaults, both conservative relative to the lead-response data. You can adjust the close-rate differential if your business tracks it differently. Understanding what actually counts as a recovered job matters here — the recovery methodology page explains exactly what that means in practice.

[CALCULATOR EMBED — inputs: trade type selector (plumbing / HVAC / electrical / other), average job value, monthly call volume, estimated miss rate. Outputs: monthly revenue loss, annual revenue loss, weeks to payback on AI Receptionist investment.]

The calculator outputs three numbers: your monthly missed-call revenue loss, your annual loss, and the number of weeks before the AI Receptionist investment pays back at your specific job volume and ticket size. The formula is: (Monthly missed calls × Buyer percentage × Close-rate gap × Average job value). Every assumption is documented in the methodology footnote below the calculator.

Important: These are national median estimates. Your actual loss depends on your local market rates, your current close rate when you do answer, the percentage of your missed calls that are genuine buyers, and your service mix. The calculator is a directional tool, not a billing statement.

This scenario uses Angi median plumbing job values and a call volume common for a residential plumber doing $400k–$700k per year. Every arithmetic step is shown so you can verify it manually.

The inputs:

• Monthly missed calls: 8
• Buyer percentage: 40% (3.2 active buyers inside those 8 missed calls)
• Answered close rate: 60%
• Missed-call close rate: 15%
• Average job value: $650 (Angi national median for plumbing service and repair)

The math:

Jobs booked if all 8 calls were answered: 8 × 0.40 × 0.60 = 1.92 jobs per month

Jobs recovered from voicemail: 8 × 0.40 × 0.15 = 0.48 jobs per month

Monthly job loss: 1.92 − 0.48 = 1.44 jobs per month

Monthly revenue loss: 1.44 × $650 = $936 per month

Annual revenue loss: $11,232 per year

That is conservative. It assumes only 40% of missed calls are genuine buyers and only 8 missed calls per month. A plumber fielding 30 inbound calls during a busy month and missing 12 of them is looking at $1,404–$1,872 in monthly revenue loss at these same inputs.

Payback math on the AI Receptionist:

Investment: $9,997 one-time + $497/month. Monthly recovery at this scenario: $936. Weeks to payback: roughly 11 weeks ($9,997 ÷ $936/month × 4.3 weeks). That is before counting the 60-day performance guarantee. At the numbers in this scenario, $5,000 in 60 days means recovering approximately 7.7 full jobs in two months — which at 8 missed calls per month is achievable inside the first guarantee window.

HVAC is different from plumbing in one critical way: the revenue is seasonal and compressed. Most of your highest-value missed calls happen in a 6–8 week window — July heat waves and January no-heat calls — when you are also the busiest and the most likely to let calls go to voicemail.

The inputs:

• Monthly missed calls: 6 (summer peak)
• Buyer percentage: 50% (peak-season callers have less patience and a higher urgent-buyer rate)
• Answered close rate: 65% (emergency no-cool calls close at an even higher rate)
• Missed-call close rate: 15%
• Average job value: $1,200 (weighted toward AC repair and no-cool calls during peak; based on Angi's published $150–$650 repair range with high-ticket emergency calls skewing the average upward)

The math:

Jobs booked if all 6 calls were answered: 6 × 0.50 × 0.65 = 1.95 jobs per month

Jobs recovered from voicemail: 6 × 0.50 × 0.15 = 0.45 jobs per month

Monthly job loss: 1.95 − 0.45 = 1.5 jobs per month

Monthly revenue loss: 1.5 × $1,200 = $1,800 per month during peak

Peak two-month revenue loss: $3,600

Here is the seasonal wrinkle: off-season, your average ticket drops to tune-up and maintenance territory ($150–$250). The revenue loss from a missed tune-up call is much smaller. But the HVAC business that installs the AI Receptionist before peak season captures the high-ticket calls it was previously losing during the exact window that drives most of its annual revenue. Compare your number to the $5,000 guarantee threshold — at $1,800/month in peak-season recovery, this contractor hits the guarantee threshold inside the first 60-day window, even if actual recovery is only 60% of the theoretical maximum.

Off-season, the same system handles tune-up scheduling, prevents no-shows with automated reminders, and builds Google review velocity for next season.

You ran the calculator. You have a monthly loss number and an annual loss number. Here is the straightforward decision framework.

Step 1: Is your annual loss bigger than $5,000?

If yes, you are already over the guarantee threshold. The performance guarantee says $5,000 recovered in 60 days or you do not pay. If your own calculator output shows $11,000 in annual losses ($917/month), the guarantee math requires the system to recover less than half of what you are currently losing just to hit the threshold. That is not a stretch — that is the floor.

If your annual loss is under $5,000, this may not be the right fit at your current call volume. The AI Receptionist works best for businesses fielding at least 15–20 inbound calls per month with an average ticket above $500. If you are not there yet, the ROI math does not pencil — and we would rather tell you that now.

Step 2: Compare your number to the investment.

The AI Receptionist is $9,997 one-time + $497/month. The plumber example above shows payback in roughly 11 weeks at 8 missed calls per month. Your number may be faster or slower depending on volume and ticket size. The calculator shows your payback week on the output screen.

Step 3: Decide your next move.

Three paths from here:

• Get your AI Receptionist live in 48 hours — if you have seen your number and you are ready, the setup call takes 30 minutes and the system is answering your phones within two business days.
• Compare your number to the $5,000 guarantee threshold — full guarantee terms, what qualifies as a recovered job, and how the 60-day window works.
• See the full job value benchmark data by trade — if you want to verify the inputs before you trust the output.

The calculator gave you data. The next move is yours.