Add your business
Choose your business or enter its website. Check the services, hours, and details callers need.
AI phone answering for your business
An HVAC phone answering service takes calls for your heating and cooling company when you are on a job or done for the day. AllDayDesk answers around the clock using the business information you save, and you keep your existing number by forwarding calls to the service. Setup covers your business details, a sample call, and phone forwarding.
Hear it answer for your business No credit card to try it
How it works
Choose your business or enter its website. Check the services, hours, and details callers need.
Listen to a sample for your business and check its answers. The sample does not create a real booking.
Follow the steps for your phone service. Set up booking availability and any call transfers you want to use.
Review calls, messages, and bookings in your dashboard.
HVAC work pulls you away from the phone. A service call, an install, or a rooftop unit repair means the person who normally answers is the person holding the wrench. An answering service fills that gap: it answers with your business name, explains your services, shares prices you have saved, and books appointments into your calendar.
AllDayDesk works from the business details you provide. When a caller asks something the saved information does not cover, such as a price for a job you have not listed or an appointment slot that is already taken, the assistant takes a message so you can follow up yourself. Changes to existing appointments are passed to you as requests, not confirmed changes, so you stay in control of your schedule.
If a caller needs to reach you directly, the assistant can transfer the call to a destination you have configured, along with the rules for when transfers happen. Transfers depend on that setup, so a pickup is not guaranteed. Most HVAC owners answer their own phone, so the service is designed to work for a one-person operation as well as a larger crew.
Setup starts by choosing your business from a list or entering its website. AllDayDesk pulls in details like your company name, services, and hours, and you check everything before going further. Next you hear a personalized sample so you know how your business will sound to callers. The sample is for demonstration only and does not create a real booking.
The last step is phone setup. You keep your public number by forwarding calls to the service, and the instructions depend on your phone provider. On Verizon mobile, for example, you activate all-call forwarding by dialing *72 plus the 10-digit destination, and *73 turns it off; setup must be done from the phone while in Verizon coverage. T-Mobile uses short codes such as **21*1 followed by the destination and # for unconditional forwarding. Other carriers use portals, star codes, or both, so check the guide for your exact service before dialing anything.
Sources: Verizon mobile call forwarding · T-Mobile short codes
Calls the service handles show up in your dashboard with a transcript and a summary, so you can see who called, what they needed, and what was promised without listening to recordings. New bookings appear on the built-in AllDayDesk calendar by default, once you have configured your services and availability.
If you already run your schedule in Google Calendar, you can optionally connect it in Settings. You connect and authorize your Google account yourself; the connection is not automatic. Appointment change requests from callers also come through the dashboard, and you decide whether to accept them.
Not every answering service works the same way, and it helps to know the main differences before you pick one. Human answering services staff calls with people; for example, Ruby advertises live virtual receptionist plans starting at $245 per month as of October 9, 2026, and Smith.ai prices its human receptionist service per call. Those figures are starting points only; you would need a current quote to compare included minutes, overage rates, hours, and contracts.
AllDayDesk is an AI receptionist, which is this site's own product. It answers using your saved business details, books into your calendar, and shows transcripts in the dashboard. When comparing options, look at what each one actually documents: how calls are answered, how appointments are booked, what happens when the assistant does not know an answer, and how you get your messages. A fair comparison weighs documented features, not marketing claims.
Sources: Ruby live virtual receptionists · Smith.ai virtual receptionist pricing
Around-the-clock availability means the service is set up to answer at any hour, but it is not a promise that every single call connects. Transfers only work after you configure a destination and rules, and a pickup is not guaranteed. When the assistant cannot answer a question, find a price, or find an opening, it takes a message instead of guessing.
Two things are worth checking before you rely on the service. First, confirm your phone carrier's forwarding steps for your exact product, since codes differ between a carrier's wireless, landline, and business platforms. Second, note that Google Voice does not support forwarding calls to an automated system, so a Google Voice number is not a compatible path. If you use Google Voice, you would need a different phone number to forward from.
Sources: Google Voice linked phone setup
Pricing
Solo $99/moBusiness $199/moGrowth $349/mo
Each plan includes call minutes. Extra minutes cost more. See your estimate before you start. Your first 30 calls are free, with no credit card. Paid plans are monthly; cancel anytime.
No. You keep your public number and forward calls to the service. The forwarding steps depend on your phone carrier, so use the guide for your exact service.
No. The personalized sample is a demonstration of how your business will sound. It does not create a booking or contact anyone.
New appointments go on the built-in AllDayDesk dashboard calendar by default, once you have configured your services and availability. You can optionally connect Google Calendar in Settings after connecting and authorizing your Google account.
When an answer, price, or appointment opening is unknown, the assistant takes a message so you can follow up yourself. It does not guess.
Yes, after you configure a transfer destination and the rules for when transfers happen. Because transfers depend on that setup, a pickup is not guaranteed.
No. Google states that forwarding calls from a Google Voice number to an automated system is unsupported, so you would need to forward from a different phone number.
Enter your business name or website, review your details, and listen to a personalized sample to hear how your calls would be answered before you connect your phone.
Hear it answer for your business No credit card to try it
HVAC Answering Service That Never Misses a CallExplore call answering