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NexxTel
Your HVAC.
Always on watch.
NexxTel monitors the condenser and the furnace, including the charge and the temperature rise.
Condenser
- Superheat
- No reading °F
- Subcooling
- No reading °F
- Compressor
- No reading A
- Line Voltage
- No reading V
- Run capacitor
- No reading µF
- Condenser fan
- No reading A
Diagnostics
- Refrigerant chargeHealthy ›
- Condenser coilHealthy ›
- Capacitor healthHealthy ›
- Electrical healthHealthy ›
- ContactorHealthy ›
- Short-cyclingHealthy ›
- Compressor startHealthy ›
- Condenser fanHealthy ›
Furnace
- Temperature rise
- No reading °F
- Supply air
- No reading °F
- Return air
- No reading °F
- Blower
- No reading A
- Inducer motor
- No reading A
- Pressure switch
- No reading V
Diagnostics
- Flame sensorHealthy ›
- Flame rolloutHealthy ›
- High-limitHealthy ›
- Pressure switchHealthy ›
- IgniterHealthy ›
- Gas valveHealthy ›
- Inducer motor and capacitorHealthy ›
- Blower motor and capacitorHealthy ›
- Air filterHealthy ›
Preview of the NexxTel dashboard.
Catch problems early.
Most HVAC problems start small, and they often show up in the readings first.
Condenser
Superheat and subcooling.
These two readings are how the refrigerant charge is read.
- Superheat and subcooling Refrigerant charge
- How far the refrigerant is from changing state, which is how the charge is read.
- Compressor current
- How hard the compressor is working, in amps.
- Outdoor fan current
- How hard the fan on the outdoor unit is working, in amps.
- Line voltage
- The voltage supplied to the outdoor unit.
- Run capacitor health
- The condition of the capacitor that keeps the compressor and fan motors running.
- Compressor start
- Whether the compressor starts when it is called to run.
- Contactor
- Whether the switch that starts the outdoor unit is wearing out.
- Short-cycling
- Whether the compressor is turning on and off too quickly.
- Suction pressure Low side
- Pressure in the line returning refrigerant to the compressor.
- Liquid pressure High side
- Pressure in the line leaving the outdoor unit.
- Suction line temperature
- Temperature of the refrigerant on its way back to the compressor.
- Liquid line temperature
- Temperature of the refrigerant leaving the outdoor unit.
- Outdoor ambient temperature
- The outside air temperature at the unit.
- Condenser coil
- Whether the outdoor coil is dirty or blocked, from the liquid line and outdoor temperatures.
Furnace
Temperature rise.
How much warmer the air is after the furnace heats it.
- Temperature rise Delta-T
- The difference between the air leaving the furnace and the air coming back.
- High-limit and auxiliary limit switches
- The safeties that shut the burners off if the furnace overheats.
- Flame rollout switch
- The safety that shuts the burners off if flame rolls out of the burner area.
- High fire and low fire
- Which heating stage is on.
- Gas valve
- Whether the valve that feeds gas to the burners is open.
- Hot surface igniter
- The part that lights the burners.
- Flame sensor
- Confirms the burners lit and keeps them running safely.
- Pressure switch
- The safety that confirms combustion air is flowing before the burners light.
- Inducer motor and inducer capacitor
- The fan that pulls combustion air through the furnace, and the capacitor that runs it.
- Blower motor and blower capacitor
- The fan that moves air through the house, and the capacitor that runs it.
- Return air temperature
- Temperature of the air coming back to the furnace.
- Supply air temperature
- Temperature of the air leaving the furnace.
- Air filter condition
- Whether the filter is restricting airflow.
The HALO Report
Every month.
In plain English.
A monthly email that sums up how the condenser and furnace are doing.
-
Health
How the condenser and furnace readings came out.
-
Alerts
Anything that went wrong, and when it cleared.
-
Load
How often the equipment ran.
-
Outlook
What to plan for, like a capacitor nearing replacement.
Made for both sides of the service call.
For contractors.
A way to watch customer condensers and furnaces.
For homeowners.
A way to see the same readings for your own system.
When it is available.
Join the list.
Tell us how to reach you.
We email you.
We email you when NexxTel is available.
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You decide whether to go further.
Get early access.
We will email you when NexxTel is available.