Guide · AI Receptionists
The AI receptionist built for HVAC and plumbing bills in credits, not minutes — here's how that math works
ServiceAgent is the rare receptionist sold for the home-services trades, but its credit model hides the per-minute rate. We convert it back to dollars and line it up against the flat-rate generalist alternative.
If you run an HVAC, plumbing, or other home-services shop and want a receptionist built for your trade rather than a generalist retrofit, the answer in this dataset is ServiceAgent — and the first thing to understand is that it doesn’t sell you minutes. It sells credits. Its three plans run $39/mo (Core), $95/mo (Growth), and $279/mo (Franchise), bundling 2,000, 6,000, and 20,000 credits respectively, all with 20% off annual. Voice answering burns 15 credits per minute at $0.01/credit — $0.15/min — so if every credit went to voice you’d get roughly 133, 400, and 1,333 voice minutes a month. That “if” is the catch, because the same credits also fund SMS and ad features, so those minute figures are a ceiling, not an allowance.
What the credit model actually costs per call
The honest way to read ServiceAgent is to convert the credits back to a per-minute rate and price a realistic workload. A home-services call — booking a furnace tune-up, dispatching a leak — runs a few minutes. Say you take 300 voice-minutes a month:
| Plan | Monthly | Credits | Voice ceiling | Cost at 300 voice-min |
|---|---|---|---|---|
| Core | $39 | 2,000 | ~133 min | $39 + (167 × $0.15) = $64.05 |
| Growth | $95 | 6,000 | ~400 min | $95 (within allowance) |
| Franchise | $279 | 20,000 | ~1,333 min | $279 (within allowance) |
On Core, 300 minutes blows past the ~133-minute ceiling, so you pay the $39 base plus 167 overage minutes at the same $0.15/min — about $64. Growth absorbs the same 300 minutes inside its allowance at a flat $95. The overage rate never changes across tiers; what you buy by moving up is headroom, not a cheaper minute. And because credits are shared, any SMS or ad-creative use pulls minutes off these ceilings — the $64 and $95 figures assume you spend every credit on voice.
The generalist alternative: Goodcall’s flat unlimited minutes
The other way to cover the trades is a generalist that doesn’t meter voice at all. In this dataset that’s Goodcall, whose plans run $79/mo (Starter), $129/mo (Growth), and $249/mo (Scale) with 15% off annual — and every one is unlimited minutes. The cap isn’t talk time; it’s unique customers per month: 100 on Starter, 250 on Growth, 500 on Scale, with $0.50 per additional unique customer above the cap.
That single difference reframes the whole comparison. ServiceAgent’s bill scales with how long you talk; Goodcall’s scales with how many distinct people call. For a home-services business, the unique-customer cap is the more natural meter — one customer often means one job, and a long dispatch call costs Goodcall nothing extra.
| ServiceAgent | Goodcall | |
|---|---|---|
| Entry plan | $39/mo (Core) | $79/mo (Starter) |
| Meter | $0.15/voice-min (15 credits/min) | Unlimited min; 100 unique customers |
| Overage | $0.15/min | $0.50 / extra unique customer |
| Annual | 20% off | 15% off |
| Built for | Home services | Generalist |
How to choose between them
The crossover is volume of talk, not volume of calls. ServiceAgent’s $39 Core is the cheapest sticker in this pairing, and if your call volume stays inside ~133 voice-minutes it’s genuinely the floor — $31.20/mo on annual. But the moment your minutes climb, the $0.15 meter runs, and a busy 300-minute month lands Core near $64 — already inside reach of Goodcall’s $79 Starter, which from there answers unlimited minutes for the same flat price until you cross 100 unique customers.
So the rule is simple. If your shop fields a modest number of calls and you want the lowest possible floor — plus the trade-specific framing ServiceAgent is built around — start on Core at $39 (or Growth at $95 if you’d rather not watch the meter). If you field a high volume of talk-time, or long dispatch calls, the flat unlimited-minute structure of Goodcall Starter at $79 stops the per-minute clock entirely and only charges you for genuinely new customers.
One caveat the dataset is explicit about: ServiceAgent does not publish HIPAA, BAA, bilingual, or even its integration list, and neither does Goodcall publish HIPAA or BAA. Goodcall lists Zapier and Google Voice; ServiceAgent’s ServiceTitan/Jobber/Housecall hooks are referenced in provenance but not confirmed on the page. For a plain HVAC or plumbing front desk that rarely matters — but if you’re routing into a specific field-service CRM, confirm the integration before you commit, because the published record stops short of guaranteeing it.