HVAC is one of the hardest industries to run a phone line for. You're either on a roof, under a unit, or driving between jobs and the calls that matter most tend to come at 9pm when a furnace dies in January. A no-heat call that goes to voicemail is often a $600 job handed to whoever picked up.
AI receptionists have gotten good enough that this is a solvable problem. The options range from $29/month set-and-forget tools to fully custom-built agents that know your pricing, your service areas, and exactly how to handle an emergency escalation. The right one depends on your setup.
I tested and researched 10 of the most used options specifically for HVAC companies. Here's the honest breakdown.
Emergency call handling (no-heat, no-cooling, carbon monoxide), ServiceTitan and Jobber integration, after-hours coverage, setup complexity, pricing structure, and whether the AI actually sounds like it knows what HVAC is.
- Dolfyn Best overall for HVAC contractors
- NextPhone Best flat-rate AI-only option
- Smith.ai Best hybrid AI + human
- AnswerForce Best for human-first coverage
- Rosie AI Best budget entry point
- Dialzara Cheapest option
- Goodcall Best for testing the concept
- PeakDemand AI Best custom alternative
- ServiceAgent.ai Best pay-per-call option
- AnswerHero General budget option
Dolfyn sits at the top of this list for one reason: it's the only option here that's built specifically around your business, not configured from a generic template. When you sign up, Dolfyn's team has a conversation with you about your services, your service areas, how you handle emergencies, what scheduling software you use, and how your crew actually operates. Then they build the agent. You don't touch the configuration.
For HVAC specifically, that matters. Generic AI knows what HVAC is. Dolfyn's agent knows the difference between a no-heat call that needs immediate escalation and a maintenance reminder that can wait. It knows your pricing ranges, your service territory by zip code, and the specific questions your customers ask. That's not something you get from a self-serve product.
Dolfyn's call handling logic is continuously refined from real contractor call data across active clients. That means the system has seen the edge cases, the weird callers, the contractors who describe their problem in five different ways. Spam filtering is also built in so you're not wasting time on junk calls.
A few things worth calling out that most competitors don't offer: Dolfyn runs a proprietary address verification check on every address captured during a call, cross-referencing it against location data in real time. Typos and mishears get caught before a tech drives somewhere wrong. There's also built-in fallback error handling for unexpected call scenarios when a caller goes off-script, the agent has defined recovery paths. And if something goes wrong, Dolfyn's team is available 24/7 to fix it in real time, not via a support ticket.
The daily human oversight is probably the biggest differentiator. Real people review calls every day, catch problems early, and tune the agent. Other services in this category either offer no oversight or charge a premium for it. With Dolfyn it's standard.
On the downside, it's the highest starting price on this list and it's not the right fit if you just want to test the concept with minimal commitment. The 2-week free trial helps, but the setup process requires a real conversation rather than a self-serve signup.
- Custom-built for your exact business, not a template
- Native ServiceTitan, Jobber, HouseCall Pro integrations
- Daily human review of calls
- Proprietary address verification on every call captured
- 24/7 real-time support if something breaks
- Configurable call forwarding missed call, 2-ring, flushed
- Month to month, no annual contracts, 2-week free trial
- Highest starting price on this list
- Setup requires a conversation, not instant self-serve
- Not ideal for testing the concept on a tiny budget
NextPhone is one of the more seriously built AI receptionists for trades businesses. Their platform is informed by a proprietary dataset of over 130,000 calls from 45 contractors, and it shows the emergency keyword detection is tuned for HVAC specifically. The system knows that "no cooling" and "no heat" are different urgency levels than "I want to schedule a tune-up." Most generic AI does not.
Flat rate at $199/month with unlimited calls and no per-minute charges is a clean pricing structure. No surprises during peak season when call volume spikes. Integrates with ServiceTitan, Jobber, and HouseCall Pro via Zapier, and handles concurrent calls without degradation. Also filters spam, which is a genuine annoyance for HVAC businesses.
The limitation is that it's AI-only. For callers who want a human voice, NextPhone routes them to you via smart forwarding but there's no human backup built in. Setup is also self-configured, so the quality of the end product depends on how well you set it up.
- Flat $199/month, unlimited calls, no overages
- Contractor-specific emergency keyword detection
- Spam filtering included
- ServiceTitan/Jobber via Zapier
- AI-only, no human fallback option
- Self-configured output quality depends on setup
- Integrations are Zapier-based, not native
Smith.ai runs a hybrid model AI handles the routine stuff, live North American receptionists step in for complex situations. For high-value HVAC calls where a caller is upset, confused, or the situation requires actual judgment, having a human in the loop has real value.
The tradeoff is cost. Their Starter plan starts at $292.50/month for 30 live calls, which adds up fast for an HVAC company with high inbound volume. They serve multiple industries so the HVAC-specific training isn't as deep as purpose-built options. Worth considering if you handle a lot of warranty disputes, difficult customers, or high-dollar commercial accounts where call quality matters more than cost.
- Human backup for complex calls
- Established, well-reviewed service
- Good for high-value commercial accounts
- Expensive for high volume priced per call
- Not HVAC-specific
- Overkill for most residential HVAC operations
AnswerForce takes the opposite approach to most options on this list humans first, AI assistance. Their live receptionists are trained specifically for HVAC and home services, know emergency terminology, and follow HVAC-specific call scripts built from years of serving contractors. Forbes named them best answering service in 2025, and they hold a 4.9/5 Trustpilot rating across over 900 reviews.
For HVAC companies that deal with a lot of after-hours emergencies where caller distress is high, a human voice has genuine value. The cost is premium typically $400/month and up depending on volume. If you're running a large multi-truck operation and a customer with no heat at midnight needs to feel heard, AnswerForce is worth the premium. For a 2-truck residential operation focused on capturing leads, it's probably more than you need.
- HVAC-trained live receptionists
- 4.9/5 Trustpilot, 900+ reviews
- Best for high-distress emergency calls
- Bilingual answering available
- Premium pricing, $400+/month
- Humans, not AI higher cost per call
- Overkill for small residential HVAC shops
Rosie was built specifically for small trades businesses. It scans your website and Google Business Profile to train on your services, hours, and service areas, and you can be live in under an hour. At $49/month for unlimited minutes on the Scale plan, it's the most affordable dedicated HVAC option on this list that still understands the trades.
The catch: appointment booking is only available on the Scale plan ($149/month) and above. The base Professional plan is message-taking only. If you just need after-hours coverage and lead capture without booking, the $49 plan works. If you want the AI to actually schedule jobs, budget $149/month. Still reasonable, but worth knowing upfront.
- Affordable $49/month unlimited minutes
- Built for trades, understands HVAC terminology
- Fast setup, under an hour
- 7-day free trial, no contracts
- Booking only on higher plan ($149/month)
- Less customization than done-for-you options
- No human oversight
Dialzara starts at $29/month for unlimited call handling. That price point is hard to ignore if you're just starting to explore AI answering services. Setup is fast most businesses are live in under an hour and it handles the basics: 24/7 answering, lead capture, appointment booking, dispatch and booking workflows.
It's not HVAC-specific. The call handling is more generic than dedicated trades options, and you'll need to invest time in configuring it well to get contractor-quality results. At $29/month it's a legitimate way to test whether AI call answering works for your business before committing to something more built-out.
- $29/month lowest price on this list
- Unlimited calls included
- Fast setup
- Generic not built for HVAC
- Quality depends heavily on your configuration
- No trades-specific emergency handling
Goodcall is a solid general-purpose AI receptionist that works fine for HVAC businesses with straightforward call needs. It was built out of Google in 2017, syncs with your Google Business Profile to learn your basic info, and starts at $59/month for up to 100 unique callers. Self-serve configuration, fast to get live.
Worth knowing: Goodcall's pricing is based on unique callers, not call minutes. For an HVAC company getting mostly emergency calls from new customers calling once during a crisis, you can hit that ceiling faster than expected. It also doesn't have trades-specific emergency handling it takes messages rather than triaging and escalating. Fine for a small residential shop that mainly needs after-hours coverage for non-emergency calls.
- $59/month starting price
- Easy self-serve setup
- Good for simple call handling needs
- Unique-caller pricing model can surprise
- No emergency triage or escalation
- Generic not HVAC-specific
PeakDemand is a Canadian agency that builds custom voice AI receptionists for HVAC and home service businesses. Like Dolfyn, they work through discovery and build your agent from scratch call flow design, integration work, QA testing, and a monitored launch phase. HVAC-specific workflows are their stated focus, including urgent no-heat and no-cooling screening, scheduling, and dispatch support.
No public pricing you need to contact them for a quote, which makes comparison harder. Based in Canada, so if you're a Canadian HVAC operation it's worth a conversation. Less established than Dolfyn with fewer public reviews, but the approach is similar. Worth including as an alternative if you want a custom-built agent and are comparing options.
- Custom-built per client like Dolfyn
- HVAC-specific focus
- Good option for Canadian businesses
- No public pricing
- Less established, fewer reviews
- Harder to evaluate without a call
ServiceAgent is trades-focused and prices per call handled rather than monthly flat rate. The platform books jobs into your calendar, fires follow-up texts automatically, and handles inbound 24/7. For an HVAC company with lower call volume that doesn't want to pay a flat monthly rate for coverage they don't fully use, pay-per-call has appeal.
The math flips at higher volumes pay-per-call gets expensive once you're taking 200+ calls/month. But for a 1-2 truck operation just getting started with AI answering, it's a low-risk way to trial the service without committing to a monthly fee.
- Pay-per-call, no monthly minimum
- Trades-focused, HVAC terminology
- Books directly into your calendar
- Gets expensive at high volume
- Less customization than done-for-you options
AnswerHero is a general-purpose AI answering service that covers the basics 24/7 call answering, message capture, lead qualification. Not HVAC-specific and doesn't have trades-oriented emergency routing, but it handles the core job of making sure calls don't go to voicemail. Sits at the budget end of the market.
If your main concern is simply having something answer the phone after hours and take a message, AnswerHero does that. For an HVAC business dealing with emergency calls and booking workflows, you'll likely outgrow it quickly.
- Budget-friendly
- Simple to set up
- 24/7 basic coverage
- Not HVAC-specific
- No emergency triage
- Generic call handling
Quick comparison
| Product | Starting price | HVAC-specific | Emergency routing | ServiceTitan/Jobber | Human oversight | Setup |
|---|---|---|---|---|---|---|
| Dolfyn | $179/mo | Yes | Yes | Native | Daily | Done for you (as fast as 1 day) |
| NextPhone | $199/mo flat | Yes | Yes | Via Zapier | No | Self-serve |
| Smith.ai | $292.50/mo | Partial | Yes (human) | Via Zapier | Human backup | 2-5 days |
| AnswerForce | ~$400+/mo | Yes | Yes (human) | Via Zapier | Human staff | Custom scripts |
| Rosie AI | $49/mo ($149 booking) | Yes | Basic | No | No | Under 1 hour |
| Dialzara | $29/mo | No | No | Via Zapier | No | Self-serve |
| Goodcall | $59/mo | No | No | Via Zapier | No | Self-serve |
| PeakDemand AI | Contact for pricing | Yes | Yes | Custom | Unknown | Custom build |
| ServiceAgent.ai | Pay per call | Yes | Basic | Yes | No | Self-serve |
| AnswerHero | Budget | No | No | No | No | Self-serve |
How to choose
The right call depends on where you are as a business and what your calls actually look like.
If you're a solo HVAC tech or a 2-truck operation and you mainly need something to catch after-hours calls and take messages, Rosie AI at $49/month is a legitimate starting point. Simple, trades-aware, cheap enough to trial without much risk.
If your calls are complex emergency dispatching, ServiceTitan booking, after-hours no-heat calls the difference between a generic AI and something trained on your actual business is a real revenue difference. An HVAC job is worth $500 to $900 on average. A single recovered emergency call per month justifies the cost of any option on this list.
For HVAC companies doing real volume and running ServiceTitan or Jobber, the short list is Dolfyn, NextPhone, and Smith.ai. Dolfyn wins on contractor-specific customization and daily oversight. NextPhone wins on flat-rate simplicity. Smith.ai wins if you need human backup for complex calls.
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