AI Receptionist vs Answering Service: What It Costs an HVAC Shop

Quick answer: For an HVAC shop taking about 150 calls a month, an AI receptionist costs roughly $79 to $600 a month and a human answering service roughly $621 to $1,440, at published US prices. In a busy summer month with twice the calls, the human services go up by about $600, while most AI plans barely move.

We build and run an AI receptionist for HVAC contractors, so we priced out every option, including the ones cheaper than ours. Every price below comes from the company's own pricing page, checked Saturday 17 October 2026.

Published prices, side by side

Sources: PATLive pricing, Ruby pricing, Smith.ai receptionist pricing, Smith.ai AI Receptionist pricing, Goodcall pricing, SynthAI pricing. PATLive also has a $49 pay-as-you-go plan at $2.99 a minute.

How does an answering service charge?

By the minute or by the call, on a monthly plan with a set amount included. Go over, and every extra minute or call costs more. (Every one. Somebody out there has a very accurate stopwatch, and they are not afraid to use it.)

PATLive and Ruby count minutes. Smith.ai's receptionist plans count calls instead. PATLive is upfront that it only bills the time a receptionist is actually on your call, not the note-writing afterwards, which is genuinely nice of them.

Here's where it gets HVAC-specific. On a per-minute plan, you pay for every second a homeowner spends doing an impression of their furnace. You know the one: "It goes WHUMP, then a kind of whistle, then WHUMP again." (Linda is made up. Her furnace impression is not. Every shop has heard it.)

That's 40 seconds of performance art, billed at up to $2.99 a minute. Linda gets a standing ovation, and you get the invoice.

How does an AI receptionist charge?

Mostly a flat monthly fee, sometimes with a cap on how many different people call, not on minutes. That's the whole difference, and I'm slightly embarrassed it took me a spreadsheet to see it.

Goodcall charges $79 a month for 100 different callers, which its own page says works out to about 150 calls, with no minute meter at all. Smith.ai's AI Receptionist starts free for 25 calls, then charges by the call. (Yes, free. I checked twice, because the last free thing I got was a cold.)

No minute meter means Linda can do the full WHUMP routine, with an encore, and your bill doesn't flinch. The AI won't get bored either. It listens to the whistle section like it's hearing it for the first time, which is more patience than I've shown anyone, including myself.

What does each option cost for a real HVAC month?

Here's one example shop priced five ways. It takes 150 calls a month, and we used PATLive's own estimate of about 2.5 minutes a call, so 375 minutes. (These are example numbers. Your shop is unique. Your mom says so, and she's right.)

Then we doubled it to 300 calls, because a heat wave doesn't ask permission.

Two things jump out. Goodcall is the cheapest by a mile, and if you want to set it up yourself, it's a good deal. (Yes, I sell one of the other rows. My marketing coach is breathing into a paper bag.)

The second thing: the human services climb by about $600 in the busy month, and the flat-fee ones stay put. If a flat bill in July sounds nice, that's how our HVAC answering service is priced: one monthly fee, whether the phone rings 150 times or 300.

Why does summer blow up an answering service bill?

Because HVAC calls come in waves, and per-minute plans charge you for the wave. A week of 95-degree days sends every homeowner with a warm living room to the phone at the same time. (Including a man named Doug, who just wants to know if 78 is a normal thermostat setting. It is, Doug. Please hang up.)

On a plan with a fixed number of minutes, your busiest week is also your most expensive one. That's backwards. You'd want the bill to shrink when you're slammed, but that only happens in my dreams and in zero pricing models I could find.

The fix isn't complicated. Before you sign, price your worst month, not your average one. (I know. Nobody wants to think about July in October. Do it anyway, then go have a snack.)

Is an AI answering service better than a human receptionist?

For booking routine jobs at 2 a.m., AI usually wins on cost and speed. For a caller who's upset, a good human still wins. That's the honest answer, and it's less fun than picking a side. (I tried picking a side. Both sides left me on read.)

AI picks up on the first ring, takes no lunch break, and doesn't mind 40 calls in an hour. A trained person is better with someone who's angry, confused, or refuses to talk to a machine on principle. (Respect. That person also writes checks at the grocery store, and honestly, good for them.)

Some companies sell both, so you don't have to choose blind. Smith.ai has human and AI plans on the same pricing page, and PATLive goes the other way: its page says it does not use AI to answer calls at all. (PATLive feels strongly about this. It's a heading. A big one.)

What do you actually get for the money?

A message, or a booked job, and you should know which one you're paying for. Ask every service, human or AI, exactly what happens after it hangs up. (A message that says "call Linda back" is a to-do list. You already have one. It's on the fridge, next to the menu from the place that closed.)

For an HVAC shop, check three things before you sign:

• Does it book the job on your calendar, or only take a message?
• What happens on an emergency? A gas smell needs a safe next step and your on-call phone right away, not a callback in the morning.
• Who fixes it when it gets something wrong? You, or them?

That last question is where the real cost hides. (Dramatic pause. Please imagine spooky music. Budget cuts.)

The cost that isn't on any pricing page: your time

Self-serve AI is cheap because you're the one setting it up, testing it, and fixing it. That's a fair trade if you like that sort of thing. (Some people do crosswords. Some people tune phone scripts at 11 p.m. No judgment. Mild judgment.)

It's also why ours costs more than Goodcall. Here's what the $600 a month covers on our Answering plan, word for word from the plan:

1. Calls you can't take answered 24/7 in your company's name

2. Every caller qualified: problem, urgency and address

3. Jobs booked on your calendar or texted to you

4. Emergencies put straight through to your on-call phone

5. Weekly call review and script fixes by our team

6. Monthly report: calls answered, jobs booked, what they were worth

There's also a one-time $1,000 buildout, which is the week we write the script with you. You spend about an hour of it on the phone with us, which is less time than most people spend picking a lawnmower. (I spent three hours. It's a very nice lawnmower. It has never once done a furnace impression.)

If you'd rather run it yourself, a self-serve tool is a good choice, and we'll tell you so on the call. The first 10 shops also get our founding rate: a $500 buildout and $600 a month on either plan, locked for 12 months.

FAQ

Is an AI receptionist cheaper than an answering service?

Usually, yes. At published US prices, a shop taking 150 calls a month pays about $79 to $600 for an AI receptionist and $621 to $1,440 for a human answering service. The gap grows in busy months, because human services bill by the minute or by the call.

How much does an HVAC answering service cost?

Human answering services start at $99 a month for 50 minutes (PATLive) and go up to $2,100 a month for 300 calls (Smith.ai). For about 150 calls a month, expect roughly $621 to $1,440.

Do answering services charge per minute or per call?

Both. PATLive and Ruby charge by the minute, and Smith.ai's receptionist plans charge by the call. Most AI receptionists charge a flat monthly fee or count different callers instead.

Can an AI receptionist handle emergency HVAC calls?

A good one gives the caller a safe next step and transfers them to your on-call phone straight away. Before you sign, ask the provider to play you exactly what it says on a gas-smell call.

Will callers know they're talking to AI?

They should. Ours introduces itself as a virtual assistant and says the call is recorded. Most callers just want someone to pick up and get them on the schedule.

Get an answering service that books the job

Our HVAC answering service answers the calls you can't take, books the job and puts emergencies straight through to you, for one flat monthly fee. Call the live demo at (651) 427-2493 and hear it answer as an HVAC company.