Know what failed before the customer calls.
FurnaceWatch is a furnace-mounted sensor and fleet portal built for HVAC service companies. It senses the heat call, follows the inducer, ignition, and blower through every cycle — and the moment a cycle goes wrong, your office gets the failure by name.
Enrolling a small number of design partners for this heating season.
Heat call with no ignition
Thermostat has been calling since 5:42 AM. The furnace has not fired.
Heat call with no ignition — Furnace 07. Calling since 5:42 AM, not fired.
The customer finds out first.
The thermostat says heating. The house is 58°. Your first sign of trouble is a phone call at 6 AM — often in a cold snap, when every truck is already booked.
The truck rolls blind.
No-heat call, no diagnosis. The tech starts troubleshooting in the driveway — and the right part may be back at the shop.
The agreement renews on faith.
Your maintenance agreement promises attention. Between visits, nobody is actually watching the furnace.
Installed by your tech. Watched by your office.
Your tech installs it
One maintenance visit: mount on the cabinet, power from the furnace’s 24V transformer, sense the heat call from the thermostat wires.
It watches every cycle
Heat call, inducer, ignition, blower — around the clock, with detection running on the sensor itself.
It names the failure
Not an error light. “Heat call with no ignition.” “Igniter failure.” “Short cycling.”
Your office knows first
A push alert with the failure mode and timeline, before the customer notices a cold house.
Failures get names, not guesses.
State-based diagnosis: FurnaceWatch knows what a normal heating cycle looks like, and when a cycle goes wrong it tells you which way. Not a prediction — a diagnosis, the moment it happens.
Heat call with no ignition
The thermostat is calling for heat and the furnace has not fired — the no-heat call, caught before the house gets cold.
Igniter failure
The ignition sequence started — the inducer ran — but no flame was ever detected.
Flame sensor failure
The flame lit, dropped out within seconds, and the furnace retried until it locked out.
Pressure switch / rollout trip
The inducer ran, but ignition never followed — a safety is holding the furnace off.
Short cycling
The furnace is starting and stopping without completing normal cycles.
Sensor offline
The sensor stopped reporting — flagged, so no furnace is ever silently unwatched.
Dispatch with the diagnosis.
The dispatcher sees the failure mode and the timeline before assigning the truck. The technician walks in already knowing the failure mode — right tech, right parts, one visit.
- Every monitored furnace in one list, with health scores
- Cycle history per furnace, for context before the truck rolls
- Customers log in and see only their own equipment
Worth money, not just goodwill.
Monitored agreements
Turn the maintenance agreement into a monitored agreement — a reason to renew and a premium tier the company down the road doesn’t have.
Fewer callbacks
When the first visit starts from a named failure, fewer jobs need a second truck.
Warranty installs, covered
You warranted that furnace for a decade. Now you’ll know what happened to it — before the homeowner does.
No batteries. No wall wart. No homeowner homework.
Built with service companies, not just for them.
We're working with a small number of HVAC service companies this heating season — real maintenance-agreement fleets, honest feedback, and a direct line to the person building it. Partners lock in launch pricing.
About the programStop reacting. Start knowing.
Book a 30-minute demo — the sensor, the portal, and the alerts, live.