The best AI receptionists for HVAC companies in 2026
The best AI receptionist for an HVAC company is the one that books into the software you already run. On ServiceTitan, its built-in AI Virtual Agent books straight to the dispatch board, and Avoca adds an AI CSR with its own human team behind it. Sameday books into ServiceTitan, Housecall Pro, Service Fusion, Jobber or FieldPulse. On Housecall Pro or Jobber, their own add-ons are the shortest path. Smith.ai puts live receptionists behind the AI, and Upfirst, Rosie and Goodcall are self-serve from $24.95 a month. We, Modern Mustard Seed, publish this guide and build a custom receptionist that we run and you own. Whichever you choose, answer fast: after one unanswered call, 82% of people call a competitor instead (CallRail, 2025). Every fact below was read from each company's own site on October 26, 2026.
Last checked October 26, 2026.
Further reading: What our AI receptionist does for HVAC companies, AI receptionist cost in 2026: every published price compared, AI receptionist vs a live answering service
Hear one answer a call for an HVAC company.
Type your number and our AI receptionist calls you in about ten seconds. Ask it about an emergency, a quote or a booking, the way your customers do.
Hear your own voice agent.
Drop your number and Mr. Mustard calls you right now. He asks what your business is, then tells you exactly what your own agent would answer.
One call, placed by Mr. Mustard to the number you just typed, because you asked for it. No list, no spam, and he will not ring you twice. Rather dial him? (406) 312-1223
Who each one is best for
- ServiceTitan AI Virtual AgentBest for an HVAC company already running ServiceTitan
- AvocaBest for a multi-truck shop on ServiceTitan that wants an AI CSR with people behind it
- SamedayBest for a shop that wants an AI CSR on the software it already runs
- Housecall Pro CSR AIBest for a shop already running Housecall Pro
- Jobber ReceptionistBest for a small shop already on Jobber
- Modern Mustard SeedBest for an owner who wants one built, run and owned, without switching software
- Smith.aiBest when you want live human receptionists behind the AI
- UpfirstBest for a small shop that wants low per-call pricing and a free trial
- RosieBest for a one-truck shop that wants a low monthly price and a free trial
- GoodcallBest for a self-serve agent billed by callers, not minutes
ServiceTitan AI Virtual Agent
An AI voice agent built into ServiceTitan. It answers calls and books jobs straight onto the ServiceTitan dispatch board from real-time technician availability, working alongside your current phone system or as part of ServiceTitan Contact Center Pro.
Strengths
- Native to ServiceTitan, "eliminating the need for third-party add-ons or complex integrations," per ServiceTitan.
- Books to the dispatch board from live technician availability, and confirms and reschedules appointments.
- Takes overflow and after-hours calls, and escalates or transfers to your own live CSRs when a call needs judgment.
Watch for
- You need a ServiceTitan subscription: the agent runs on ServiceTitan data and is not sold on its own.
- Its texting agent works only on ServiceTitan tracking numbers.
- No published price. ServiceTitan prices per technician, by request.
PriceNot published. Every ServiceTitan package (Starter, Essentials, The Works) says Request Pricing.
Avoca
Avoca bills itself as "The AI Front Office for HVAC": an AI CSR that answers calls around the clock, books jobs into your CRM and routes emergencies, plus outbound campaigns, call coaching and analytics.
Strengths
- Books jobs directly onto your ServiceTitan board, with real-time syncing between the two systems.
- "Emergency calls get routed to your on-call tech immediately. Everything else gets booked," per Avoca.
- A hybrid option sends calls the AI cannot handle to Avoca's own human CSR team.
Watch for
- No published price: it starts with a 20-minute demo.
- ServiceTitan is the only field service platform with its own integration page; on other software, confirm how deep booking goes before you sign.
PriceNot published. Book a demo.
Sameday
"The AI answering service for HVAC companies," per Sameday. Its AI CSRs answer every call 24/7, including nights, weekends and holidays, recognize urgent no-heat and no-cooling calls, and put service tickets on the dispatch board during the call.
Strengths
- Books into ServiceTitan, Housecall Pro, Service Fusion, Jobber or FieldPulse, per its HVAC page.
- Unlimited users on every plan, and unlimited locations on Scale.
- Follows your dispatch rules and brings in your own people when it matters.
Watch for
- Plans are sized by minutes and the price climbs with volume; the per-minute overage is not published.
- Sign-up runs through a sales demo.
- The Launch plan is framed for after-hours calls and caps you at 3 locations.
PriceLaunch from $449 a month (500 minutes), Scale from $789 a month (1,000 minutes), Enterprise custom.
Housecall Pro CSR AI
An AI customer service rep built into Housecall Pro. It answers calls and web chats day or night and books jobs onto your Housecall Pro calendar from your own services, hours and availability.
Strengths
- Built in, so "your team, jobs, and tools work in sync," per Housecall Pro.
- Emergency handling is always on: urgent calls forward to the number you choose or trigger a text alert.
- A caller who asks for a person can go to your number or to a Housecall Pro Assist rep.
Watch for
- CSR AI is an add-on, and its price is not on the pricing page.
- Booking depends on Online Booking being set up with services and open windows.
- Text answering is still in alpha.
PriceCSR AI add-on: not published. Housecall Pro plans: Basic $59, Essentials $149 and Max $299 a month billed annually ($79, $189 and $329 billed monthly).
Jobber Receptionist
An AI receptionist built into Jobber that "answers calls and texts 24/7, books visits, takes requests, and escalates to you when needed," running on the business data already in your Jobber account.
Strengths
- You choose the keywords that mean urgent, such as a burst pipe or no heat, and those calls escalate to you.
- Books into your Jobber calendar through your Online Booking form.
- An after-hours caller "gets an answer instead of a voicemail box," per Jobber.
Watch for
- Only for businesses on a paid Jobber plan, with a Jobber dedicated phone number (US, Canada and UK).
- On the add-on, each conversation past the 30 included costs $0.79.
- No staffed humans: it transfers to you or your escalation contact, or sends a text alert.
PriceReceptionist add-on $29 a month with 30 conversations, then $0.79 each; included with unlimited use on Jobber Plus ($280 a month, annual prepaid). Jobber plans start at $21 a month, annual prepaid.
Modern Mustard Seed(that's us)
That's us. We are an AI product studio in Kalispell, Montana, and we build a custom AI receptionist for one HVAC company at a time: your services, service area, emergency rules and booking rules, in a natural voice. Then we run it for you, for businesses in every state.
Strengths
- Built and managed for you: we write the call rules with you, test them, and keep tuning after launch.
- Answers every call in seconds, day or night, books the job and texts you a summary when the call ends.
- You own the configuration and the accounts, and changes to what we built are included.
Watch for
- Not self-serve: it starts with a discovery call and a written scope, so it is not live the same afternoon.
- If you run ServiceTitan with a CSR team, a native option books deeper into the dispatch board.
- No published price; we quote a set package after the call.
PriceSet package price, quoted after a free discovery call
Smith.ai
An AI receptionist backed by live North America-based receptionists, billed per call. Its HVAC page hands live receptionists the "emergency service coordination, upset customers, and complex system discussions."
Strengths
- A complex call can transfer to a live receptionist, day or night.
- A free plan with 25 calls a month, so you can try it first.
- AI scheduling through Calendly and other booking tools.
Watch for
- Every answered call counts toward your quota; you can remove up to 10% a cycle as spam, and known spammers are filtered first.
- Calls past your allowance bill at a higher per-call rate.
- Canceling takes 30 days notice.
PriceFree plan: 25 calls a month, then $3.00 a call. Pro: $150 a month for 75 calls, $270 for 150, $500 for 300. Enterprise: $500 a month for 300 calls or $800 for 500, custom from 1,000.
Upfirst
A self-serve AI answering service billed by calls a month, with calendar booking, warm transfers and a choice of answering every call, overflow only or after hours. Its HVAC page is built around "after-hours and emergency calls."
Strengths
- 14-day free trial with no credit card and no contract.
- Spam, calls under 15 seconds and silent calls are not billed.
- Live, warm handoffs to you or your team.
Watch for
- $1.50 a call past the 30 included on Starter.
- Books into general calendars (Google Calendar, Outlook, Calendly, Acuity); field service software connects through Zapier or a custom API action.
- Each extra agent is $9.95 a month.
PriceStarter $24.95 a month for 30 calls, Premium $59.95 for 90, Pro $159.95 for 300, Scale $299 for 600; annual billing saves 20%.
Read from
Rosie
A self-serve AI answering service that answers 24/7, takes messages, texts booking links or books on a connected calendar, and alerts you to high-priority calls.
Strengths
- 7-day free trial on every plan, with no contracts or cancellation fees.
- Go over your minutes and you move up to the next plan at its standard price, with no per-minute overage.
- Books on Google Calendar, Calendly, Acuity or Appointlet from the Scale plan up.
Watch for
- It does not dispatch technicians; an emergency becomes a notification to you.
- Calendar booking and call transfers start on the $149 Scale plan; the $49 plan texts a booking link instead.
- No direct field service software integration; CRMs connect through Zapier.
PriceProfessional $49 a month (250 minutes), Scale $149 (1,000 minutes), Growth $299 (2,000 minutes); annual billing gives 2 months free.
Read from
Goodcall
A self-serve AI answering service you build by talking to its AI builder, Gabi, billed per unique customer served each month instead of per minute. Its HVAC page calls it "particularly well-suited to HVAC operations where seasonal call surges are routine."
Strengths
- Billed by unique customers, never by the minute.
- Runs practice calls on tricky cases, such as an emergency at midnight, before you go live.
- Transfers to up to three escalation contacts in order, retrying busy lines.
Watch for
- Extra customers bill at your plan rate: 79 cents each on Starter.
- Native connections are Google Calendar, Google Sheets and HighLevel; field service software needs an API tool or MCP server.
- No free trial on the pricing page: you build a free demo agent and pay when a number is connected.
PriceStarter $79 a month (100 unique customers), Growth $129 (500), Scale $299 (2,000); Enterprise by quote.
- We read each company's own product, trade and pricing pages on October 26, 2026, and list only what they publish. Where a company publishes no price, we say so.
- We sorted by the software you already run and how much you want to set up yourself, not by a single ranking, so the order is not a score.
- We judged on what an HVAC company needs from its phone: emergencies to the on-call tech, booking into the schedule, after-hours coverage, and what happens to the bill when call volume spikes.
- We did not place test calls to any vendor for this guide. Everything here is what each company publishes about itself.
- Modern Mustard Seed wrote this guide and builds AI receptionists. We are on the list, we say so, and every option gets the same space.
Last checked October 26, 2026. Prices change; check each source before you buy.
Still deciding? Let it take a call.
Drop your number, tell him your trade, and he answers the way your own receptionist would.
Hear your own voice agent.
Drop your number and Mr. Mustard calls you right now. He asks what your business is, then tells you exactly what your own agent would answer.
One call, placed by Mr. Mustard to the number you just typed, because you asked for it. No list, no spam, and he will not ring you twice. Rather dial him? (406) 312-1223
Common questions
What is the best AI receptionist for an HVAC company?
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The one that books into the software you already run. On ServiceTitan: its AI Virtual Agent, or Avoca for an AI CSR with people behind it. On Housecall Pro or Jobber: their built-in add-ons. On one of several platforms: Sameday. Self-serve on a budget: Upfirst, Rosie or Goodcall. Built, run and owned without switching software: Modern Mustard Seed.
How much does an AI receptionist cost for an HVAC company?
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Published prices on October 26, 2026: Upfirst from $24.95 a month for 30 calls, Rosie from $49 a month for 250 minutes, Goodcall from $79 a month, Jobber Receptionist $29 a month as an add-on to a paid Jobber plan, Smith.ai from $150 a month for 75 calls on Pro (or a free plan with 25 calls), and Sameday from $449 a month for 500 minutes. ServiceTitan, Avoca and Housecall Pro CSR AI publish no price. Modern Mustard Seed quotes a set package price after a discovery call.
Can an AI receptionist handle a no-heat call at night?
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Yes, if it is set up to. Sameday says it recognizes urgent no-heat and no-cooling calls and transfers true emergencies to your on-call tech, Avoca routes emergencies to the on-call tech immediately, and Jobber escalates on keywords you choose. Self-serve tools such as Rosie notify you instead of dispatching.
Can I hear an AI receptionist before I buy?
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Yes. Call (406) 312-1223 and Mr. Mustard, our own voice agent, answers. Smith.ai has a free plan with 25 calls a month, Upfirst a 14-day free trial and Rosie a 7-day free trial.
Related comparisons and guides
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