Checked October 26, 2026. Prices were read on each vendor's own pricing page. ServiceTitan, Workiz and Avoca do not publish prices; we say so. Prices change: re-check before you buy. Dooza Crew is our product and our top pick for the office side of a small contracting business; we say why, and where the trade-specific tools fit better.
Best AI tools for HVAC and plumbing contractors: the short answer
Our top pick for the office side of a small HVAC or plumbing business is Dooza Crew: AI employees for the jobs nobody has time for, such as hiring techs, supply ordering and filling forms, $49 a month for the whole organization, and it asks before it sends anything. If you want field service software with AI, Housecall Pro starts at $59 a month billed annually, while ServiceTitan and Workiz do not publish prices. For answering calls, Sameday and Avoca are built for home services; Rosie starts at $49 a month, Goodcall at $79, Smith.ai has a free plan and Dialzara starts at $29 a month.
Who this list is for
This list is for owner-operated HVAC and plumbing shops, from one truck to roughly twenty, not national chains. Contractors are adopting AI, but cautiously. ServiceTitan's 2026 survey of trades contractors, run by Thrive Analytics, found "Active engagement with AI increased from 46% in December 2025 to 52% in September 2026, while the share of contractors watching from the sidelines declined from 22% to 18%." The same report says "Despite growing usage and demonstrated productivity benefits, only 11% of contractors place high or complete trust in the AI tools they use, while 58% report little or no trust." (ServiceTitan sells software, so read its survey as a vendor's view.)
A small shop has an owner on the phone between jobs, a dispatcher who is also the bookkeeper, and a stack of permits, supplier orders and hiring that waits until night. The tools below fall into three groups: field service software with AI built in, AI that answers the phone, and AI that does office work in your browser.
AI tools for HVAC and plumbing compared
| Tool | What the AI does | Price (vendor page, Oct 26) | Free option |
| Dooza Crew (ours, top pick) | AI employees for office work: hiring, supply orders, forms, email drafts; takes phone calls | $49/mo per organization, unlimited users and agents, AI usage included | 7 days free (card required) |
| ServiceTitan | Field service software; AI Virtual Agent and Contact Center Pro as Pro add-ons | Per-technician, not published (contact sales) | None stated |
| Housecall Pro | Field service software, AI Team; separate AI CSR answers calls | From $59/mo billed annually (AI CSR sold separately) | 14-day free trial, no card |
| Workiz | Field service software; AI tools on the Pro plan | Not published (request pricing) | 7-day free trial, no card |
| Avoca | AI CSR for service businesses: inbound calls, speed to lead | Not published (contact sales) | None stated |
| Sameday AI | AI phone answering and campaigns for home services | Starts at $449 per month | None stated |
| Rosie | 24/7 AI answering, booking, transfers | $49 per month (250 minutes) | 7-day free trial |
| Goodcall | AI phone agent billed per unique caller | $79 a month (100 customers) | Free demo agent |
| Smith.ai AI Receptionist | 24/7 AI call answering, summaries, scheduling | Free $0 (25 calls); Pro $150/mo | Free plan |
| Dialzara | AI receptionist, messages and transfers | From $29/month (60 minutes) | 7-day free trial |
1. Dooza Crew (our product, top pick): AI employees for the shop's office work
Crew gives a contractor AI employees, each with its own computer and browser and its own job. They work around the clock, work with your team in one chat, and pass work to each other. They work in the web-based tools you log in to with a browser, and Crew agents take phone calls too, included in the plan. Before an agent sends an email or clicks Send, Submit or Pay, it asks you to Approve, Edit or Reject.
Some jobs you could give it:
- Hiring: you could give one agent the job of posting your technician or apprentice opening on job sites, sorting the replies and drafting answers to applicants for you to approve.
- Supplies: you could give one agent the job of checking prices for parts and supplies on your suppliers' websites and building the order, then waiting for you to approve before it clicks Pay.
- Forms: you could give one agent the job of filling the fillable PDF, Word and Excel forms you upload, such as a vendor application or a rebate form. Scanned PDFs without form fields cannot be filled. You type passwords and 2FA codes yourself.
- Reviews and email: you could give one agent the job of drafting replies to online reviews and routine supplier email for you to approve.
- Price: free for 7 days (card required), then $49 a month for the whole organization (unlimited users and agents), AI usage included with a hard spending cap. At the cap it pauses and tells you.
- Watch for: it is not a licensed contractor and does not quote, diagnose or dispatch; licensing, safety and pricing decisions stay with you. No field service software (ServiceTitan, Housecall Pro, Jobber) is integrated, so it works only where you can log in with a browser; test yours during the trial.
Try Dooza Crew free for 7 days.
2. ServiceTitan: the big field service platform, with AI in its Pro list
ServiceTitan covers dispatching, scheduling, call booking, invoicing, pricebook and mobile estimates. Its menu lists "AI Virtual Agent" and "Contact Center Pro" under "Get more with Pro".
3. Housecall Pro: field service software with an AI Team
Housecall Pro covers online booking, invoices and payments, scheduling and dispatching, quotes and review management. Its AI page says "Your AI Team catches missed leads and clears the busywork, so growth doesn't cost more hours." A separate AI CSR "Answers calls and books jobs 24/7 so you never miss an opportunity."
4. Workiz: AI tools on the middle plan
Workiz offers field service software in three plans: Standard, Pro and Ultimate. The Pro plan is described as "The step up – AI tools and stronger automations."
5. Avoca: an AI CSR built for service businesses
Avoca's page title is "Avoca AI | The AI Workforce for Service Businesses". Its main product is an AI CSR that books jobs around the clock, with inbound, outbound, speed-to-lead and web chat products, and a ServiceTitan integration. It invites you to "See how Avoca can handle your inbound calls in a 20-minute demo."
- Price: not published; you book a demo. We found no pricing page and no trial.
- Watch for: demo-only with no public price, so compare quotes. Test it on emergency calls before you send your after-hours line to it.
6. Sameday AI: AI call answering and campaigns for home services
Sameday describes itself as "The AI front office for home services." It sells AI CSRs, a phone system, a scheduling wizard and campaigns, and lists scheduling with ServiceTitan and similar software on its plans.
- Price: Launch starts at $449 per month with 500 minutes and 3 locations; Scale starts at $789 per month with 1000 minutes and unlimited locations; Enterprise is custom (Sameday AI pricing).
- Watch for: it is the priciest call tool on this list for a one-truck shop, plans are minute-based, and sign-up goes through a demo. No trial stated.
7. Rosie: a low-cost AI answering service
Rosie is a "24/7 AI answering service that knows your business." It takes messages, books appointments and transfers calls to your team.
- Price: Professional $49 per month (250 minutes); Scale $149 per month (1,000 minutes, books on your calendar, warm transfers); Growth $299 per month (2,000 minutes) (Rosie pricing).
- Trial: "Start your 7-day free trial."
- Watch for: plans cap minutes, and it connects to other software through Zapier rather than named field service integrations.
8. Goodcall: pay per caller, not per minute
Goodcall bills by unique customer: "We never meter minutes."
- Price: Starter $79 a month (100 unique customers, then 79 cents each); Growth $129 a month (500 unique customers); Scale $299 a month (2,000 unique customers) (Goodcall pricing).
- Trial: "Better: a free demo agent."
- Watch for: a storm week with many different callers pushes you past your plan's customer count, and Starter is aimed at a solo operator.
9. Smith.ai AI Receptionist: a free plan to start
Smith.ai's AI Receptionist offers 24/7 AI call answering with recording, transcription and summaries, call routing and AI scheduling with Calendly and similar tools.
- Price: Free $0 a month for 25 calls ($3.00 per call after that); Pro $150 a month ($2.00 per call); Enterprise $500 a month ($1.67 per call) (Smith.ai AI Receptionist pricing).
- Free plan: "Try it and trust it first."
- Watch for: a general small-business tool; the page names Calendly, Clio and Zapier but no field service software.
10. Dialzara: a low-cost AI receptionist
Dialzara answers calls, takes messages with custom questions and transfers calls, with add-ons for outbound calls, SMS and website chat.
- Price: Business Lite $29/month for up to 60 minutes ($0.48/min over); Business Pro $99/month for 220 minutes; Business Plus $199/month for 500 minutes; Business Elite $349/month for 1000 minutes (Dialzara pricing).
- Free trial: "7-day free trial", no contract, cancel anytime.
- Watch for: you pay by talk minutes, so a heat wave adds up. It is not trade-specific and names no field service software.
Free AI tools and trials for contractors
- Free plan: Smith.ai AI Receptionist, 25 calls a month for $0.
- Trials: Housecall Pro 14 days (no card), Workiz 7 days (no card), Rosie 7 days, Dialzara 7 days, Dooza Crew 7 days (card required), Goodcall a free demo agent.
- Demo or quote only: ServiceTitan, Avoca and Sameday.
Trust and checking the work
Trust is the real hurdle in the trades. A phone agent that books the wrong address or promises a price you never quoted costs more than a missed call. Before you route your main line to any AI, run test calls, including an emergency such as a burst pipe or a furnace out in winter, listen to the recordings, and decide what it may never say, such as a firm price or an arrival time. With Dooza Crew, agents ask you to Approve, Edit or Reject before they send an email or click Send, Submit or Pay, which keeps you the last stop on anything that leaves the building.
How to choose an AI tool for your shop
- Start with the job that costs you most. Missed calls, after-hours coverage, hiring techs, or the paperwork that piles up at night.
- Check your field service software first. If you already run ServiceTitan, Housecall Pro or Workiz, see what AI it includes before you add another tool.
- Do the math your way. Rosie and Dialzara price by minutes, Goodcall by unique caller, Smith.ai by call, Sameday from $449, Dooza Crew as one price for the organization.
- Keep yourself in charge. AI can answer, draft and fill forms; quotes, safety calls and licensed work stay with you.
- Test before you switch. Use the free plan or trial and real calls for a week.
Comparing tools for other parts of your business? See best AI tools for small business, or try Dooza Crew free for 7 days.
Try Dooza Crew
A lead AI agent plus helper agents that browse the web, write files and ask you before they send or pay. 7-day free trial (card required), then $49/month with AI usage included and a hard spending cap.