Best Answering Service for HVAC Companies: 12 Prices at the Same Call Volume (2026)

By analyzing the data from about 800 HVAC shops, ServiceTitan determined that heat waves drove up calls by 20%, jobs by 25%, and revenue by 55%. The first heat wave of the season had the largest impact, which increased daily revenue by approximately 90% above the typical non-heat-wave baseline. In heating-dominated markets, the same pressure comes with the first hard freeze: a significant portion of the seasonal demand comes through the phone line in a short period of time.

That’s a straightforward question about a purchase, and the answer is anything but simple for the HVAC company that’s thinking about using an AI answering service. The comparison below compares one workload to each billing model to help HVAC companies ensure the security of bookings and margins during a surge in demand. If you also run plumbing calls, we tested 10 services against plumbing intake checks in a separate comparison of AI answering services for plumbers.

What 300 Answered Minutes Cost Across 12 Vendors

Three hundred answered minutes is about 100 three-minute calls, which can exceed many starter plans. That is where the headline price becomes less useful and the billing model begins to matter.

What Each HVAC Answering Service Offers Beyond the Price

The profiles below show what sits behind each figure and where the practical limits begin.

For shops that want published pricing, per-second billing, and multilingual support.

Verified price:

Starter costs $29/month for 150 minutes, Pro $99 for 700, and Business $199 for 1,500. Extra minutes cost $0.18, $0.14, and $0.13 by tier.

Integrations: 

ServiceTitan and other field service tools connect through the API, webhooks, Zapier, or Make. 

Languages: 

150+, with 60+ Google voices, 25+ ElevenLabs voices, and voice cloning through the API.

Setup and trial: 

A managed answering agent can go live within 24 hours. The 14-day trial begins after a demo call, and turnkey development is also available.

Disqualifier: 

Direct ServiceTitan dispatch-board booking requires a custom integration.

For shops with long conversations and a relatively small pool of repeat callers.

Verified price: 

Starter costs $79/month, Growth $129, and Scale $249. Every tier includes unlimited minutes and tokens, plus 100, 250, or 500 unique customers. Each additional customer costs $0.50. A 14-day free trial is available.

Integrations: 

The pricing page names Zapier as its only integration. A separate ServiceTitan page mentions an API connection, but it does not describe a native connector.

Languages:

According to its claims, Goodcall’s voice agents accommodate 20+ languages. The pricing page and help center do not list all of them or state if they’re available on all plans.

Setup and trial: 

Starter comes with one logic flow and 7 days of call information. Those limits are increased to three flows and 30 days for Growth and 25 flows and unlimited retention for Scale.

Disqualifier: 

Pricing is based on unique phone numbers and not on talk time. A residential acquisition line can cross its allowance quickly, while repeat callers can stretch the same plan across far more minutes

For single-location shops that require English and Spanish call handling on every plan.

Verified price: 

Professional costs $49/month for 250 minutes, Scale $149 for 1,000, and Growth $299 for 2,000.

Integrations: 

Rosie lists Zapier as its only named integration, connecting to 1,000+ apps. ServiceTitan, Housecall Pro, and Jobber are absent from the pricing page.

Languages:

All plans include English and Spanish.

Setup and trial:

Direct calendar booking, warm transfers, and live transfers begin on Scale. Waterfall Transfers begin at Growth. The number of message-taking scenarios grows from 2 to 5 and then to unlimited.

Disqualifier: 

Professional ends at 250 minutes and doesn’t disclose any overage rate. The only published plan that covers 300 minutes is Scale at $149. What happens at Rosie’s cap, and which services handle it differently, is in our Rosie AI alternatives breakdown.

For shops seeking call handling, reviews and local ads all in one place.

Verified price: 

Monthly plans cost $49 for Core with 2,000 credits, $119 for Growth with 6,000, and $349 for Franchise with 20,000. Voice calls consume 15 credits for every minute. On paid plans, there is an ad management fee of 5% to 10%.

Integrations:

ServiceAgent promises to sync with ServiceTitan, Jobber, and Housecall Pro in both directions. The vendor states that these integrations are certified but doesn’t link to any marketplace.

Languages:

There is no list of supported languages published for ServiceAgent.

Setup and trial: 

The free entry-level option is the $0 Launch tier, which offers pay-as-you-go credits and does not require a card. CRM and calendar setup can be completed within 48 hours, and workflow setup and optimization can take two weeks, per ServiceAgent.

Disqualifier: 

The site does not explain which usage bands receive each rate within the $0.02–$0.04 range, and it’s hard to predict what the pay-as-you-go rate will be. Call handling in multiple languages is not mentioned.

For shops replacing a business phone system and an answering service at the same time.

Verified price: 

The business plan costs $45 per month and the Ultra plan costs $120 per month.The AI receptionist requires one additional Business seat, which will make the monthly starting price for a one-person shop $90.

Integrations: 

Allo offers native CRM sync with HubSpot, Pipedrive, Attio, Salesforce, and other business tools. 

Languages:

Allo explicitly lists English, French, and Spanish. It further states that calls are transcribed and summarized in the language of the caller.

Setup and trial: 

The AI receptionist can be deployed in approximately 10 minutes, Allo claims. There is a seven day free trial and no setup fee or contract.

Disqualifier: 

The fixed seat price ensures that the base bill remains steady regardless of fluctuations in call volume, but Allo publishes no concurrency limit for the AI receptionist. ServiceTitan or Jobber workflows would depend on Zapier, Make, or a custom webhook.

For multi-location operations that are already on ServiceTitan.

Verified price:

None. Avoca does not disclose a price or a billing unit but directs interested customers to a demo.

Integrations:

Of the AI services in this comparison, Avoca is the only one that is listed as a Certified Application in the ServiceTitan Marketplace.

Languages:

Avoca does not list the languages it supports but does say it has multilingual support.

Setup and trial:

Avoca’s ServiceTitan page states that it takes 5 minutes to set up, and the ServiceTitan Marketplace states that the majority of customers go live within two weeks of onboarding, integration, and custom agent training. No self-service trial is available.

Disqualifier:

If there is no public price or billing unit, cost cannot be estimated before speaking to sales.

For shops where field-service integrations are the deciding factor.

Verified price:

None published. LeadTruffle names four plans, Essential, Growth, Scale, and Managed, without disclosing prices or a billing unit. Plans are month-to-month and can be cancelled anytime. Its HVAC page states that LeadTruffle charges no per-minute answering fees.

Integrations:

The integration directory includes ServiceTitan, Housecall Pro, Jobber, Workiz, Zapier, webhooks, and a public API. Google LSA, Yelp, Thumbtack, and Angi are supported lead sources. The HVAC page also lists FieldEdge, but it is not listed in the current integration directory. No ServiceTitan certification is shown.

Languages:

LeadTruffle does not publish a list of supported languages.

Setup and trial:

All customers receive an onboarding call to review the checklist. Scale adds white-glove setup and Managed adds ongoing configuration, monitoring and optimization. No free trial is promoted, access starts with a demo.

Disqualifier:

Without a public price or billing unit, the cost of 300 minutes cannot be estimated before speaking with sales. The monthly prices ($400-$1,500) and per-minute costs ($0.75-$2.00) listed on its HVAC page refer to the traditional answering services, not LeadTruffle.

For agencies and teams ready to develop, test and maintain their own voice agent.

Verified price:

Retell advertises pay-as-you-go pricing of $0.07–$0.31 per minute. It includes voice infrastructure for $0.055, text-to-speech for $0.015-$0.040, language models for $0.003-$0.32 and US telephony for $0.015 per minute. The first 20 concurrent-call slots are included; each additional slot costs $8 per month.

Integrations:

On its home-services page, Retell AI names ServiceTitan, Housecall Pro and Jobber. But, the current integration directory marks ServiceTitan as an unofficial connector and the instructions for setting it up involve Zapier to create the job. There are no entries in the directory for Housecall Pro and Jobber.

Languages:

Retell AI supports 55 languages across 63 locale variants, including Spanish. The combinations available will vary by voice and speech provider.

Setup and trial:

Self-service accounts get $10 in free credits, prebuilt templates and API access. Retell AI says that a basic agent can go live in minutes, with dedicated implementation support offered as an Enterprise add-on.

Disqualifier:

The usage estimate does not include prompt design, HVAC call-flow configuration, integration, testing or monitoring. Shops without an internal process owner will require an agency, a certified Retell AI partner or paid implementation support.

For businesses rolling out large-scale voice automation across multiple locations.

Verified price:

Enterprise contracts start at $30,000 annually. The final pricing will vary based on call volume, concurrency, telephony, integrations, security needs, and launch support. There are no self-service plans or public per-minute rates.

Integrations:

The current integration directory lists over 200 apps, including ServiceTitan, Housecall Pro, and Jobber under Vertical CRM. However, their entries provide no setup details or explanation of the data each connector can read and write. ServiceTitan certification is not claimed.

Languages:

Synthflow supports over 30 languages overall, and a single agent can use and switch among up to 10 languages during a conversation.

Setup and trial:

The implementation, onboarding, testing, training, launch support and ongoing optimization are all part of enterprise contracts. Synthflow describes deployment in weeks. The current pricing page does not advertise a trial and leads to sales or a custom demo.

Disqualifier:

The $30,000 annual minimum is difficult to justify for a shop handling only a few hundred minutes each month.

For shops that want U.S.-based human receptionists to answer all calls.

Verified price:

$30/month plus $1.60–$1.95 per minute, with automatic volume discounts and one-second billing. There are no minute plans, contracts, overage fees, or surcharges for nights, weekends, and holidays.

Integrations:

AnswerFirst lists integrations with ServiceTitan, Jobber, Workiz, RazorSync, JobNimbus, and FieldPulse. On its ServiceTitan page, it promises job creation and updates, though two-way API setups might come with hourly charges.

Languages:

Handling is advertised in English and Spanish. There is no published wider language list or pricing information.

Setup and trial:

Most accounts can start taking messages within one business day. White Glove support continues for at least 45 days. The 30-day risk-free offer is a conditional refund, not a free trial.

Disqualifier:

At 300 minutes, AnswerFirst is roughly nine to eleven times byVoice’s $56 Starter route before PSTN and any LLM overage. The exact rate and integration costs require a quote.

For shops that want human answering backed by HIPAA, PCI DSS, HITRUST, and SOC 2 credentials.

Verified price:

Pay As You Go costs $49/month with no included minutes and $1.37 per minute. Business is $179 for 125 minutes, Enterprise $339 for 250, and Premium $649 for 500, with overage at $1.30, $1.28, and $1.28. The cheapest option is Enterprise with 300 minutes for $403.

Integrations:

MAP mentions Zapier, Google Calendar, Calendly, HubSpot, Salesforce, Clio, and Rocket Matter. No ServiceTitan, Jobber, Housecall Pro, or Workiz connector is published, so dispatch-board automation would need to be done via Zapier or custom work.

Languages:

All plans include English and Spanish. No broader language list is published.

Setup and trial:

There is a seven-day trial with all the features without requiring a credit card. Plans are month-to-month and are cancelable with no fees.

Disqualifier:

The lowest cost plan will be $403 at 300 minutes. MAP doesn’t have any native integration with ServiceTitan, Jobber, Housecall Pro or Workiz, so dispatch-board automation would need to be done through Zapier or custom development.

For shops that want human receptionists connected to field-service software.

Verified price:

None published. Plans include a monthly minute allowance and charge by the minute; the first 30 calls lasting under 30 seconds are free each month.

Integrations:

Integrations include ServiceTitan, Housecall Pro, Jobber, Workiz, FieldPulse, Service Fusion, Salesforce, HubSpot, QuickBooks, Encircle, Improveit360, and Zapier. ServiceTitan is integrated via Zapier.

Languages:

English and Spanish.

Setup and trial:

No public setup timeline or trial is published.

Disqualifier:

Without published rates or minute tiers, the cost cannot be estimated. The billing treatment of short calls after the first 30 free calls is not explained.

What Public Vendor Pages Cannot Prove About an HVAC Deployment

A booking agent is not a replacement-system estimator

byVoice, Rosie, Avoca, and the other AI vendors can collect details, qualify callers, book jobs and escalate exceptions. But load calculations, rebates, and margins sit outside a normal answering service workflow, so replacement pricing needs approved rules and human review.

Setup times are measuring different milestones

Avoca promises five minutes for their ServiceTitan integration, while byVoice promises 24-hour managed implementation for its AI answering service for HVAC companies, and ServiceAgent and Synthflow talk about weeks for implementation. Those numbers are not directly comparable. Connecting an app or placing the first call is a different milestone from having an agent that knows your job types, booking rules, escalation paths and failure handling.

ServiceTitan answering service: what “integration” actually means

Avoca books jobs directly via the API and is a certified application. Retell creates a job with a Zapier workflow, and AnswerForce creates a lead with Zapier. LeadTruffle advertises ServiceTitan booking but does not include it in its published native-integration list. The important question is what ServiceTitan shows at the end of the call, rather than whether its logo appears on an integrations page.

The prices and integration lists in this article were taken from each vendor’s website on 01 September 2026. Prices are monthly unless otherwise indicated. “Actual” per-minute figures are our calculations, not vendor claims: the monthly cost at the stated volume divided by 300 minutes. Prices fluctuate from one day to the next so check the pricing page before you book. Please notify us of any errors you find here with a dated note and we will correct them.