HVAC Answering Service That's Also Your Phone System

Homeowners and businesses reach your techs first. When nobody can pick up, the AI receptionist answers 24/7, triages no-heat and no-cool calls, dispatches your on-call tech, and logs every call, human or AI, in one inbox.

Keep your current number: port it over, or simply forward it.
Try a no-heat emergency, ask about the diagnostic fee, or book a tune-up. It's a demo line for a fictional HVAC company.
InboxAllAI answeredYour team
AI
No-cooling call before you're on site7:20 AM
AC quit overnight and the house is already 84 degrees.
Diagnostic booked 11amAI answered
L
Maintenance-plan member, fall tune-up9:35 AM
Am I due for my fall service yet?
Tune-up bookedLuis answered
AI
Routine repair1:15 PM
My thermostat keeps resetting itself.
BookedAI answered
M
Supplier, parts are in3:02 PM
Your compressor came in, want it held at the counter?
Call loggedMarcus answered
AI on a call now

Here's a Saturday. You barely touched your phone.

A real-shaped day. Every call rang your team first. The AI took the ones nobody could, and every call and text landed in one inbox.

7touch points
3jobs booked
0wake-ups
7:20 AM
CallNo-cooling call before you're on siteAIAI answered

“AC quit overnight and the house is already 84 degrees.”

Answers on the first ring, captures the address and the symptoms, and books a diagnostic into your next open slot, then texts the customer a confirmation.

Diagnostic booked 11am
9:35 AM
CallMaintenance-plan member, fall tune-upLLuis answered

“Am I due for my fall service yet?”

Rang the crew; Luis picked up live from the app on the business number. The call was still transcribed, summarized, and filed on the customer.

Tune-up booked · logged
11:48 AM
TextCustomer texted instead of callingAIText · AI replied
New text · 11:48 AM
no hot water since this morning
We can help. Gas or electric water heater? I can get a tech out today between 2 and 4.
gas. 2-4 works

A customer texts your business number instead of calling. The AI replies from the same number in seconds and carries it by text until it's booked. The thread lands in the same inbox as your calls.

Replied in seconds · estimate booked
1:15 PM
CallRoutine repairAIAI answered

“My thermostat keeps resetting itself.”

Not an emergency. Captures the equipment and address, books it into the next open slot, and leaves your afternoon uninterrupted.

Booked · next open slot
3:02 PM
CallSupplier, parts are inMMarcus answered

“Your compressor came in, want it held at the counter?”

The call rang the crew; Marcus took it live on the same number and kept the job moving.

Call logged
6:40 PM
CallPricing question after hoursAIAI answered

“What's your diagnostic fee, and do you cover my area?”

Answers from your pricing and service area, captures the lead, and logs it so your office can follow up first thing.

Answered · lead captured
1:52 AM
CallNo-heat emergencyAIAI answered

“Furnace died and we have a newborn in the house.”

Asks the symptoms and address, flags it a true emergency by your rules, and rings your on-call tech, then texts the customer an ETA. It only wakes you if your rules say a human must. You read the summary at breakfast.

Emergency dispatched · tech ETA texted
Monday morning

No more scrolling. Just ask about it.

Ask Fast Response reads every call, text, chat, task and contact on your line. Type a question and get the answer with links to the actual conversations, plus quick actions you can act on.

How Ask Fast Response works →
Ask Fast Response
What happened this weekend?

7 conversations Saturday, 3 jobs booked. 5 handled by the AI and 2 by your team, each with a recording or thread and a summary.

No-heat emergencyPricing question after hoursSupplier, parts are in
Ask about calls, texts, tasks or contacts…

Built around the calls an HVAC shop actually gets

Train it once on your service area, fees, maintenance plans and on-call rules. Then it handles homeowners, plan members and suppliers, and hands off when it should.

“Furnace died and we have a newborn in the house.”
01Emergencies

Triage by your rules

No heat with a newborn, no cooling in a heat wave, a gas smell: your rules decide what rings the on-call tech at 2 AM. Everything else books the next open slot.

“AC quit overnight and the house is already 84 degrees.”
02Service calls

Books the diagnostic on your calendar

Captures the address, the system and the symptoms, then books the visit on your Google or Outlook calendar and texts the homeowner a confirmation.

“What's your diagnostic fee, and do you cover my area?”
03Pricing

Answers the fee and area questions

Diagnostic fee, service area, financing, licensing: set them once and the AI answers them on every call, day or night.

“Am I due for my fall service yet?”
04Maintenance plans

Keeps plan members on schedule

Members calling about a tune-up get booked into the next open slot, and the call is logged on their record.

A tech picks up between jobs, the AI stays out of it.
05Your team

Rings your techs first

Office and field phones ring for about 15 seconds before the AI steps in. Anyone can watch an AI call live, whisper, or take it over.

“2 calls this season: Oct 3 (no heat), Nov 12 (tune-up).”
06Record

Every call on the customer's record

Calls, texts and chats per customer and address, with AI summaries, so the next tech knows the history before they roll.

Running several locations or service brands? One login, one inbox, a separate number and greeting per location if you want it.
Multi-business · all plans

What's different from forwarding calls to an AI receptionist?

Most AI receptionists just forward the calls you miss to their AI, so they only ever see those. Fast Response is the business line itself, so every call lands in one place.

Forwarding to an AI
Only the calls the AI takes are loggedYou forward the calls you miss to their bot, so that's all it ever sees.
Calls your tech answers leave no recordPick up on a cell and there's no recording, transcript, or summary.
Automations fire on the AI's calls onlyRules can't act on a call the system never handled.
Phone line and AI dashboard stay separateTwo tools, two inboxes, nothing joined up.
Fast Response
AI and team calls in one logWhoever answers, the call lands in the same place.
Every call recorded, transcribed & summarizedFiled on the contact automatically, with the texts and chats.
Automations on every call, AI or humanText a booking link to a caller who didn't speak, or text your own rep the second a hot lead comes in.
One business line and inboxCalls, texts, and web chat together, not scattered.
See how the call inbox works →

Automations built for HVAC

The AI handles the call. Automations act on what happened in it: the category, the summary, the transcript, whether it was resolved. Pick a recipe, edit the text, turn it on.

Call triggerTemplate
No-heat and no-cooling calls reach the on-call techA cold house can't wait for Monday.

When the transcript mentions no heat or no cooling, text the on-call tech right away.

Call trigger
Replacement quotes move to QualifiedSystem-replacement leads don't sit in the inbox.

When the transcript mentions a quote or a system replacement, move the caller to Qualified.

Call trigger
Save the service addressNo more retyping addresses into your dispatch tool.

When a call captures an address, save it to the contact's Service address field.

Call trigger
Booked jobs go to your field-service softwareThe call details arrive without re-typing them.

When the summary mentions a booked service visit, send the job details to your field-service software by webhook.

Call trigger
Review requests after a good callHappy customers become five-star reviews.

When a caller sounds happy and the issue is resolved, text them your review link.

Call trigger
Service requests by text get a booking linkCustomers who text get an answer in seconds.

When a customer texts asking for service, reply with your booking link and the next open times.

See all automation templates →Automations are on Pro and up.

Hear the AI answer, in its own voice.

Real recordings from the same assistant that will answer your line. Or skip the samples and call the demo line yourself.

AI ASSISTANT
AI Appointment Booking

This assistant booked an appointment straight onto our client's calendar — automatic win!

1:34
AI ASSISTANT
Inbound Call FAQ

This assistant handled questions from inbound calls about a short-term rental listed for sale on the MLS.

2:30
AI ASSISTANT
Collecting Information

This assistant collected customer information and sent an SMS notification with it to the business owner.

0:49
AI ASSISTANT
Switching to Mandarin

Our assistant speaks up to 40 languages. Hear it switch from English to Mandarin mid-call.

0:36

Flat pricing. No per-seat fees.

Most HVAC shops land on Pro: the office and every field tech on one number, for $79 a month. Two months free on yearly plans.

Starter
$29/mo
Handle everyone who contacts you.
For operators who are done losing business to voicemail.
250
Voice min
30
AI min
250
Texts
∞
Chats
Included each month, then pay-as-you-go
Calls and texts, answered 24/7
Outbound AI calls
Website chat embed
Basic integrations: Google Calendar & Outlook
Emergency triage and dispatch to your on-call staff
SMS and email AI call summaries
Try it free →
No card needed · cancel anytime
Most popular
Pro
$79/mo
Handle everyone — and automate the follow-through.
Everything in Starter, plus your whole team, automations, and advanced integrations.
1,000
Voice min
100
AI min
1,000
Texts
∞
Chats
Included each month, then pay-as-you-go
Everything in Starter, plus
Team accounts — unlimited users
Automations
Advanced integrations: Follow Up Boss, Zapier & webhooks
Lower overage rates
Priority support
Try it free →
No card needed · cancel anytime
Scale
$249/mo
Built around your operation.
For high-volume operators who want the phones handled their way.
2,000
Voice min
250
AI min
2,000
Texts
∞
Chats
Included each month, then pay-as-you-go
Everything in Pro, plus
Mass outbound AI calling & texting
Toll-free number option
Custom integrations
White-glove onboarding
Lowest overage rates
Direct support line, same-day response
Try it free →
No card needed · cancel anytime
Free to try — no card needed
Keep your number: port or forward it
iOS, Android & web apps included
Calls, texts & website chat — you or the AI
No contract — cancel anytime

Pay as you go after your allowance, from a prepaid wallet you control. See full pricing

How much does a missed call cost you?

Why do HVAC companies use an answering service?

Because a no-heat call at 11 PM in January goes to whoever picks up first, and your techs are on rooftops, not by the phone. Human answering services cover the overflow at $200-500 a month and still just take a message. Fast Response answers on your own business line, triages the emergency, books the diagnostic or dispatches your on-call tech, and texts your crew a summary. Anyone can pick up any call live from the app, and those calls are logged exactly like the AI's.

A missed no-heat call at 11 PM is an emergency visit, and often a system replacement, booked with a competitor.

Missed call cost calculator →

How much does an HVAC answering service cost?

A human answering service runs $200–500 a month, and after-hours surcharges land on exactly the no-heat calls that matter most. Fast Response is $29 for the line with 24/7 AI answering included, $79 with dispatch automations, $249 with outbound maintenance campaigns. No surcharges, no contract.

Answering service cost, compared →

HVAC after-hours answering service for no-heat and no-AC calls

When a furnace dies at 11 PM or an AC quits in a heat wave, Fast Response answers on the first ring, captures the address and symptoms, and decides whether it's a true emergency by rules you set. A no-heat call with an infant in the house rings your on-call tech within seconds, with the details they need to roll. Routine repairs get booked into the next open slot instead of waking anyone up. No scripted call center, no busy signal during the seasonal rush, and every call in one inbox.

After-hours answering service →

Frequently asked questions

Fast Response starts at $29/mo, and $79/mo covers your whole crew with no per-seat fees. No contract. Most companies are live in about 5 minutes, and you only pay more if you go past your monthly call and text allowances, far below the $200–$500/mo a traditional HVAC call center runs. See full pricing →

Stop sending customers to voicemail

Get your AI business line answering calls, texts, and chats in about five minutes. Keep your current number: port it or forward it.

No card needed · available on iOS, Android & web
Dashboard
Test Call AssistantPhone DialerRiverside PM
+1 (916) 555-0142
95 calls in last 7 days · 18 after hours · 3 open tasks
Last 7 days ▾Edit dashboard
Needs attention now
3items
Follow-up tasks across 3 calls.
Call volume
95calls+12
71 incoming · 24 outgoing.
After-hours calls
18of 95+4
Outside 9am–6pm. AI answered all 18.
AI vs team handled
AI 61Team 34
Team time saved
3h 12m
Talk time the AI absorbed instead of your team.
Tasks from Calls
3 open across 1 type · 1 overdue
All tasks →
Leasing1
1 overdue
Confirm ShowingOverdue 4h
Caller asked about the 2BR on Oak St. AI booked 11am tomorrow — confirm access with the current tenant.
Suggested owner: leasing · from +1 (916) 555-3071
Priya Gill
+1 (916) 555-3071
AI CallFollow-up
Prospective tenant asked about price, pet policy and availability. AI answered from the listing and booked a showing into Dana's calendar.
▶0:00 / 1:22
Open full callAI CallManual CallTextShare
Latest Calls
95 calls · 71 incoming · 8 unreviewed
View all calls →
AllNeeds actionUnreviewedMore (8) ▾
PG
Priya Gill
+1 (916) 555-3071
Aug 13, 7:15 AM · 1m 22s
LESS ▴
New lead · leasingAI Call1 task
Outcome
Follow-up required
Handled by
AI Call
Status
Customer ended
How it ended
AI booked a showing and offered to text the address.
Details captured
Unit
2BR · 1450 Oak St
Budget
$2,400/mo
Move-in
Sept 1
Pets
1 cat
Pre-qualified
Yes · 3× income
Next step
Showing tomorrow 11am
▶0:00 / 1:22
AI CallManual CallTextShareMark Reviewed
Marcus T.
+1 (916) 555-4410
Human CallVendor
Owner check-in
+1 (916) 555-2298
Human CallIncoming
AI → Dana takeover
+1 (916) 555-7756
AI CallLeasing
Other industries
Property ManagersRealtorsContractorsHome ServicesPlumbersElectriciansRoofersPest ControlLandscapingRetailNon-ProfitsSchoolsLaw FirmsSales TeamsAfter hours answering service