HVAC Answering Service Cost: Per-Call vs Per-Minute vs AI

Here is every published price we could verify, with the meter each vendor bills on. Prices in this market move without notice — the linked page is the live source, not this table.

Two facts about that table are worth more than any single price in it.

First, the AI lane is not one price band. Rosie sells 250 AI minutes for $49. Sameday AI's entry plan starts at $449 for 500 minutes — nine times the monthly fee for twice the minutes. Both are AI answering a phone. What separates them is printed on the plans: Sameday's Launch tier lists "Pro scheduling (ServiceTitan etc)" and "3 locations included" and sells to "your home service business", while Rosie's plans list "Zapier integration — connect to 1,000+ apps". Write-back into dispatch software is what the premium buys.

Second, the HVAC-specific number the search results keep repeating is five years old. Jamey Hopper, who "has been the owner/president of Dexcomm since June of 1989," wrote in March 2021: "An HVAC company with 2-4 trucks will usually have a telephone answering service bill with a premium service of somewhere between $125 and $350 per month in the off season depending on the TAS cost factors mentioned earlier." That figure is still ranking. Note the three qualifiers everyone drops when they recycle it: off season, 2-4 trucks, and 2021 — plus the fact that the person quoting it sells answering services.

HVAC answers fewer of its inbound calls than almost any trade it competes with. Invoca's Home Services Lead Conversion Benchmarks Report 2026 charts "call answer rates by sub-industry" and puts HVAC at 34%, second-lowest of the nine trades it measures — against its headline finding, "Across home services, 52% of calls are answered by a person," and 74% for plumbing — drawn from "phone calls tracked and analyzed by the Invoca platform... within a broader dataset of over 70 million calls and 600 million minutes of conversation." Read it as what it is: an average across Invoca's customer base, meaning businesses already paying for call analytics, not a random sample of HVAC contractors. It still says the calls an answering service would bill you for are today mostly going unanswered.

The vendors say this about each other, on their own pricing pages, in writing:

1. Per call — Smith.ai bills a flat rate per call regardless of length. Its argument against the alternative, verbatim: "Per-minute services work opposite to your needs; they want to maximize your call length while you want to minimize your call time."
2. Per minute — Answering Service Care bills a minute bundle plus a per-additional-minute rate. Its argument against the alternative, verbatim: per-call providers "charge businesses the same rate for every call, regardless of its length. However, this model can become costly for businesses that frequently handle short, unproductive calls, such as wrong numbers or hang-ups, as these count the same as longer calls."
3. Flat monthly with a minute bundle — Rosie and Sameday AI bill one monthly figure for a large minute allowance. Neither publishes what happens past the allowance, which is the whole risk of the model.
4. Per unique caller — Goodcall bills per distinct phone number rather than per minute: "We DO NOT charge any fees for number of calls call minutes, or tokens consumed by your AI." A homeowner who calls six times about one furnace counts once. Robocalls and silent callers "never count towards your allowance."

One variant prices humans and AI out of a single pool without adding a fifth meter. Abby Connect measures every plan in "Abby Minutes" and converts at two rates, printed as two labelled blocks — "Human Answering / 1 Abby Minute = 1 minute" and "AI Answering / 1 Abby Minute = 2 minutes" — which its FAQ restates from the other direction: "One minute of human answering uses one Abby Minute, and one minute of AI answering uses half an Abby Minute." The meter is still per minute; only the exchange rate moves. Abby's worked example on the $599 Professional plan answers 200 minutes all-human, 300 on a mix it breaks out as "100 Human Minutes + 200 AI Minutes", or 400 all-AI — the same money buying twice the coverage as you shift the mix.

Both vendor critiques are correct, and that is the point: each meter is a bet on your average call length. Answering Service Care publishes its own working assumption — "On average, answering service calls last roughly three minutes" — an uncited vendor estimate, but the only published one, and the number the next section's arithmetic uses.

HVAC's call mix is unusually bad for per-call billing and for per-minute billing at once, for opposite reasons. Seasonal spikes fill the line with 30-second "are you open" and "do you service my zip" calls, which per-call meters charge full price for. Then a no-heat call with a nervous homeowner runs long, and per-minute meters charge for every minute of the reassurance.

Smith.ai prices 300 AI calls at $500 against 300 live calls at $2,100 — the same 300 calls, on the same company's two price sheets. Answering Service Care prices 250 AI minutes at $195 against $329 for 250 live minutes. Abby Connect bills one plan rate and lets an AI minute consume half an Abby Minute.

Take one month, stated as an illustration rather than a benchmark: 120 answered calls, at Answering Service Care's published three-minute average, so 360 billable minutes. Substitute your own two numbers and the arithmetic holds.

The formula, once, so you can re-run it: monthly bill = plan fee + (billable units above the bundle × overage rate), where billable units = calls for a per-call meter, and calls × average minutes for a per-minute meter. Every total below is the vendor's published price run through that formula; the per-call column is the total divided by 120, rounded to the nearest cent.

Five things fall out of that table.

• The same 120 calls cost between $129 and $1,125 depending only on the meter — $1,125 ÷ $129 = 8.7× — with no difference in the number of calls answered.
• Ruby cannot be priced at this volume at all. Its 200-minute plan is $720 and its 500-minute plan is $1,725; 360 minutes falls between them and no per-additional-minute rate is published. Either you buy the $1,725 tier or you find out the rate on a sales call.
• Adding booking to a per-call human plan re-prices the whole thing. Smith.ai charges $1.50 per call to book appointments, so 120 booked calls adds $180: $1,125 becomes $1,305, and $9.38 per call becomes $10.88. On its AI plans that function is bundled — even the $0 tier lists "AI Scheduling (Calendly & more)".
• Goodcall's $129 is priced per agent, and Goodcall tells you to build one agent per location. Its FAQ: "There are no limits to how many Goodcall agents you can build, so you can easily have a unique agent for every location of your business." Three locations on Growth is 3 × $129 = $387 — read the cheapest row as a single-location price.
• Human answering is not overpriced here — it is priced for judgment. $9.38 a call buys a North-America-based person who can hear panic. What share of your 120 calls needs one is a capability question, and where AI answering and a live receptionist each break down works through it call type by call type.

A flat bundle is the only meter that survives a heat wave unchanged: triple the call volume in July and the bill reads the same as February. That is why our own HVAC-only AI answering on one flat monthly rate carries no per-call and no per-minute component — the month you most need the phone answered is the month a meter costs the most.

One widely repeated warning does not survive checking against the published rates. Housecall Pro's own 2026 answering-service cost guide — ranking on page one for this query — cautions that "Some providers charge 2–3x the base per-minute rate for overages, which can turn a $149 plan into a $300 bill during a busy month." Among the vendors that publish both an included allowance and an overage rate, we could not find a multiple near that. Dividing the plan fee by its included units gives the effective included rate; comparing it to the published overage rate gives the multiple:

Those multiples run 0.96× to 1.25×, not 2–3×. The bill still doubles in a busy month — Answering Service Care's live Pro plan goes from $329 to $505 at 360 minutes in the table above — but it doubles because of volume, not because of a punitive rate. The distinction changes the fix: negotiate the bundle size, not the overage rate. And where the overage rate is unpublished, Housecall Pro's warning stands unrebutted, because there is nothing to check.

The pattern that matters for an HVAC shop: dispatch-software scheduling sits in the $400+ AI band, not the cheap one. Rosie routes integrations through a "Zapier integration — connect to 1,000+ apps", and Goodcall's FAQ says the same — "Connecting your Goodcall agent with your CRM of choice is easy using Zapier" — while Sameday AI prints "Pro scheduling (ServiceTitan etc)" on the plan itself. If a booked job has to land on your dispatch board rather than in an email, the $49 plan is not a competitor.

Seasonality re-prices every band. Specialty Answering Service — the highest-ranking result for this query, at "Pricing starting at $44/mo" — offers to "adjust your call plans every month to accommodate the seasonal volume fluctuations that are typical of the HVAC industry." That is the right instinct, and also an admission that nobody can price your account until they have seen a season of your call log.

So the last question is yours to answer with your own numbers rather than a vendor's: what does one unanswered call cost you, and how many are you losing? Work that out first, because it sets the ceiling on what any of these plans is worth paying. The revenue half of that arithmetic — what an unanswered HVAC call is actually worth — is a separate page, and you can size your own missed-call losses in a couple of minutes. After that the job is shortlisting vendors rather than models, which the field guide owns and this page does not.

See a real bill before you sign one. Bring us your call log — volume, average length, after-hours share — and we will price the meters against each other with your numbers, including the vendors that aren't us. Send it through the contact form. Our own AI answering carries no published rate because we quote it per shop against that log; the work that does carry a published rate — SEO at $2,500 a month with GEO and AI-search work included, a website at $2,500 one-time or $250 a month across twelve months — sits on our pricing page.

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