No-heat calls in the first cold snap: a dispatcher’s playbook

The first hard cold night does not send you one no-heat call. It sends you twenty by 7 a.m., and each caller believes theirs is the emergency. A playbook written in September beats improvising in the cold. Here is a plan an HVAC dispatcher can run from.

The first freeze is not the coldest night of the year. It is the first night many systems run at all, so cracked ignitors, dusty flame sensors and pilot lights that went out in spring all surface on one morning. That is why call volume spikes in a day instead of building. Natural gas was the main space-heating fuel in 46% of U.S. homes in 2024, according to the EIA’s Winter Fuels Outlook, with electricity close behind, so expect both gas and electric calls on one board.

Triage in four questions

• Is anyone at risk? A gas smell or a carbon monoxide alarm is not a scheduling question. Tell the caller to leave the building and contact emergency services, then log it.
• Who is in the home? Infants, older adults and anyone medically fragile move a call up the list.
• What is the temperature doing? A house at 62 degrees with a space heater can wait longer than one at 48 with frozen pipes risk.
• What is the system and the symptom? A furnace that will not ignite and a thermostat with dead batteries are not the same visit. Ask for the make, the age and any error code the caller can read.

The intake script

A good intake call sorts the job and sometimes fixes it without a truck, because tripped breakers and dead thermostat batteries show up on every first-freeze board. Put these five questions on a card next to every phone:

1. Do you smell gas, or is a carbon monoxide alarm sounding? If yes, give the safety instruction and stop.
2. Is anyone in the home very young, elderly or medically vulnerable?
3. What does the thermostat say, and does it have power? A blank screen often means batteries or a tripped breaker. Check that it is set to Heat with a setpoint above room temperature.
4. Has the furnace switch or breaker tripped, and when was the filter last changed? A clogged filter can trip the high-limit switch. Walk the caller through checking, but never ask anyone to open a burner compartment.
5. What is the indoor temperature now, and is there plumbing at risk?

Log the answers in the job notes so the technician knows what has been tried.

Rank calls in four tiers

When the board triples, first come, first served stops being fair. The fourth caller may have a newborn at home while the first has a second furnace that still works. A written tier list gives you a defensible order and gives your phone staff something concrete to say. Get the owner’s sign-off before the freeze; a list invented at 7 a.m. will not be applied consistently.

• Tier 1, safety and people at risk. A possible gas leak or carbon monoxide is an instruction, not a dispatch decision. Connecticut’s utility regulator says to leave if the smell is strong or you are unsure, and to call the gas company or 911 from outside without touching switches or the thermostat (CT PURA). For an alarm, the Oregon State Fire Marshal says to get everyone outside into fresh air and call 911. The technician goes after the utility or fire department clears the house. The CDC says more than 400 Americans die each year from unintentional carbon monoxide poisoning not linked to fires, and lists flu-like symptoms such as headache, dizziness and upset stomach, so treat those symptoms next to a misbehaving furnace as a CO call. No heat with vulnerable people home also lands here: the CDC’s winter weather guidance names babies sleeping in cold bedrooms and older adults with inadequate heating among those most at risk of hypothermia.
• Tier 2, no heat with freeze risk. A vacant rental, owners away, plumbing in a crawl space. Nobody is in danger yet, but a burst pipe turns an ignitor job into a water damage claim. Ask how cold it is and how fast it is dropping.
• Tier 3, partial heat. One zone of two is down, or the auxiliary strips do not kick in, but the house is holding 60 degrees. Uncomfortable, not dangerous. Give a firm window today or tomorrow, plus space heater safety guidance.
• Tier 4, inconvenience. A noisy blower, uneven rooms, a thermostat that will not hold a schedule. Book these into the normal calendar.

Set the priority before you set the route

Give every call a priority at intake, not after you start dispatching. Jobs in FSM Navigator carry a priority and an SLA deadline, so a no-heat call with a medically fragile occupant is visibly ahead of a tune-up that slipped to this week. Write down your own rules for what counts as urgent, so two dispatchers triage the same call the same way.

Hold capacity back

• Keep one technician per shift light on scheduled work so an emergency does not have to bump someone mid-job.
• Move non-urgent maintenance visits out of the first cold week and tell those customers early.
• Check parts before the surge: igniters, flame sensors, capacitors, blower motors and the common thermostats. A second trip for a part is the most expensive kind of no-heat call.
• Decide your after-hours rate and your response window now, and put both in the quote template so the office is not negotiating at midnight.

Which maintenance visits to keep, move or combine

Booked tune-ups are technicians who could be on no-heat calls. A rule that holds up:

• Keep visits for members whose agreement promises a window you have already confirmed, and commercial accounts with contracted response terms.
• Move residential tune-ups booked as sometime this week where the customer has not arranged their day around them.
• Combine where you can. If a member’s tune-up is two streets from a Tier 2 call, one technician can do both in the morning.

Call the people you are moving; do not text a reschedule at 7:15 and hope. Saying that families are without heat this morning and asking to move to Thursday usually gets a yes, while silence gets a cancellation. Every tune-up you push is one you will be catching up on in two weeks, so put moved visits into specific slots right away.

On-call, overtime and keeping technicians upright

A cold snap rarely lasts one day. If everyone works 14-hour shifts on Monday, Wednesday’s board is worse because two people call in sick. Decide the stop time in advance, for example that residential calls taken after 6 p.m. go to the on-call technician unless they are Tier 1. Keep whoever worked 12 hours today off the pager tonight, and add a backup slot to your rotation for the season; our guide to on-call rotation for service technicians shows how. Overtime is a choice, so pick your policy before the freeze.

Let the board rebalance, not the dispatcher’s memory

Once the calls start, the day changes every hour. A job runs long, a part is missing, a new emergency comes in two streets from a tech who just finished. On Pro and Enterprise, FSM Navigator’s intelligent dispatch assigns by skills, certifications, location and workload and keeps rebalancing through the day as conditions change, and the dispatch board refreshes on its own. A job can require specific skills, and dispatch assigns a technician holding every required skill with an approved, current certification, or the closest match if nobody does. You can still reassign anything by hand. On the Free plan you assign by hand on the same board. See intelligent dispatch and FSM Navigator for HVAC.

When a technician calls in sick on day two, jobs that have not started yet are reassigned to the next best available technician, and a job with no free technician waits for your dispatcher instead of being double-booked. If an open job gets close to its SLA deadline, owners and dispatchers get a Telegram warning (Pro and Enterprise, once Telegram is set up), so a promised window does not slip past unnoticed.

Tell the customer what happens next

A customer waiting in a cold house wants two things: a window and a name. Give an honest arrival window, text or call when the technician is on the way, and say plainly if the wait is long. Customers forgive a long wait more readily than silence. Texts are one-way notifications on Enterprise, sent with your own Twilio account.

• Quote by tier, not by hope. Tier 1: the next available technician is on the way. Tier 3: tomorrow, morning or afternoon window.
• Use windows, not times. On a day like this a two-hour window is honest and a fixed time is not; see arrival windows vs appointment times.
• Call before the window breaks. If a technician is running long at 2 p.m., the 3-to-5 customer hears it at 2:15.
• Give interim safety advice. The CPSC’s winter heating tips say to keep space heaters at least three feet from anything that burns, plug them straight into a wall outlet and turn them off when sleeping.

The one-page version

• Triage questions and the intake script on a card next to every phone.
• Tier list signed off by the owner; priority and SLA set at intake.
• One light technician per shift in the first cold week.
• Parts checked, rate and window written down, maintenance keep-and-move rule agreed.
• Stop time and on-call backup decided before the freeze.
• Board open all day, with someone watching it.

Then review it in 30 minutes

When the board calms down, sit with your service manager and look at how many calls came from customers who skipped a fall tune-up (next year’s maintenance campaign list), which calls were fixed by phone (a self-check list for your site or hold message), where you missed promised windows and why, and whether every Tier 1 call got the right instruction. Check your SLA numbers too; SLA tracking for field service teams covers what to measure. Write the changes into the tier sheet while you remember what hurt.