Owners search "AI answering service for HVAC" when the office phone and the truck phone are the same problem. A homeowner calls because the house is hot, cold, or making a noise they do not trust. Someone has to ask what is wrong, where the house is, and whether the call can wait. That someone is often already on a roof or under a house.
A traditional answering service puts a person on a script you send them. A custom-built agent uses the services, cities, hours, and emergency rules you approve, answers calls and texts 24/7, and hands the conversation to your team when the rule says so. It supports the dispatcher and the on-call tech. It does not replace them. If a caller asks, it says it is an AI assistant. The HVAC page is the build. How AI agents work is the mechanics. Answering service cost lists published prices from named services, each linked to that company's page. Stakd does not publish a rate card.
The calls are not one kind of call
Sort the phone before you buy coverage. A filter question and a carbon monoxide alarm are not the same ring.
No cooling. The house is hot and the system is off, weak, or icing up. The useful questions are whether any cooling is running, the city, the address, and whether anyone in the home is at extra risk in the way you defined. The National Weather Service heat-safety page says heat can be very taxing on the body and can lead to heat-related illness or make an existing health condition worse. That is why a no-cool script should ask about the people in the house, not only the equipment.
No heat. The mirror image in cold weather. The National Weather Service winter page says winter storms can bring snow, sleet, and freezing rain across the United States, including major cities as far south as Atlanta and Dallas. A no-heat call in that kind of week is not the same slot as a thermostat question in mild weather. Ask whether there is any heat at all, then use the window you opened for that kind of call.
Carbon monoxide and gas. The EPA page on carbon monoxide lists furnaces, leaking chimneys, and back-drafting furnaces among indoor sources. The same page says to have a trained professional inspect, clean, and tune up the central heating system, including furnaces, flues, and chimneys, annually. A CO alarm or a gas smell is not that annual visit. Your emergency rule should name who gets those calls. The agent collects the address and the symptom and sends the call to that person. It does not diagnose the furnace.
Maintenance and equipment. The EPA annual tune-up is scheduled work, not a 2 a.m. page, unless you decided otherwise. The Department of Energy home-heating page lists furnaces and boilers, and heat pumps used for both heating and cooling. Ask which one the house has when the caller knows. If they do not, your tech can sort it.
Why the calendar is lumpy
The U.S. Energy Information Administration says that, on average, more than half of home energy use is for heating and air conditioning. In 2020 that share was 52 percent, for space heating and air conditioning together. EIA also says those two uses are mostly seasonal, energy-intensive, and different by location, home, and equipment. The page is Energy Explained: use of energy in homes.
That 52 percent is not a count of your phone calls. It is why a flat weekly plan fights the work. EIA says the pattern changes with place, so name the cities you cover. Ready.gov's extreme-heat page tells people to use air conditioning and, if the home has none, to find a cooling center. Ready.gov's winter-weather page says to be prepared for winter weather at home. Your after-hours rule should already say who gets a no-cool call and who gets a no-heat call.
After hours is a rule, not a vibe
After hours means the office is closed and a person is or is not on call. Write that down before anyone, human or AI, answers the phone.
Who rolls. Some shops send a tech for no-heat and no-cool. Some only roll for gas, carbon monoxide, or a system that is off with someone you flagged. The rule has to be yours. The on-call tech still decides whether to roll. The dispatcher still owns the morning route. The agent supports that handoff. It does not replace either person.
What is said. A custom-built agent can say it is an AI assistant when asked, and offer only slots you opened. A message-taking service can stop at a name and number. Know which one you bought. A text that confirms an appointment the customer just asked for is not a promotion. Do not add a pitch you did not write.
What to ask any provider
Use this list on a traditional answering service and on a custom-built agent. The point is the same: you should be able to point at the answer.
Call types. Can they separate no-cool, no-heat, a carbon monoxide alarm, a gas smell, and a maintenance visit? One script for all of them is a no.
Map and clock. Which cities get a time, what is said outside that map, and whose on-call window is real?
Handoff and appointments. Does the note hit a text, an inbox, or a calendar the office opens? Can they book only the appointments you allowed?
Identity. If a caller asks whether a person is on the line, what is said? Stakd's agent says it is an AI assistant when asked.
The price. Named answering services publish rates in different shapes: per minute, per call, and a monthly block. Those figures, with links to the company pages they came from, are on the answering service cost page. Stakd is custom-built for the shop. There is no public rate card. Book a free 15-minute strategy call and we will walk the work with you. No contracts. Month to month.
How a custom-built agent hands the call to your team
Here is the path once you have approved the rules. The same idea is on how AI agents work, written here for a heating and cooling phone.
Step 1. Answer. The agent answers calls and texts 24/7, including when the office is closed. It uses your greeting, not a generic one.
Step 2. Sort. It asks the questions you listed: symptom, city, address, equipment if the caller knows it, and the safety questions you wrote for heat, cold, gas, and carbon monoxide.
Step 3. Offer or hold. If the call matches a window you opened, it can book that appointment. If the call matches an emergency rule, it does not invent a cheerful morning slot. It reaches the person you named, with the details it just collected.
Step 4. Leave a record and stop. The office should see whether the customer booked, declined, or went to on-call. If a caller asks for a person, the agent follows the handoff rule you set. Your team keeps the customer. The tech still does the repair. You still set prices, the map, and which nights are worth a roll.
A short script you can mark up
Cross out anything you do not want said. What is left is the start of a custom-built script.
- Cooling: Is any cool air coming out? What city? Is anyone in the home affected by heat in a way you want flagged?
- Heating: Is there any heat? Furnace, heat pump, or boiler, if they know? Same question about who is in the home.
- Safety: Gas smell or a carbon monoxide alarm? If yes, use your emergency path. Do not troubleshoot on the phone.
- Out of area: Say so, and do not book the drive.
West Jordan, Utah. Call (801) 441-4315 if you would rather start on the phone. Or book the strategy call and bring the marked-up list.