The ZeroRPM® system architecture allows for scalable solutions to fit your needs. This is possible through our configurable product stack for energy and climate control. Our systems can supply your vehicle with energy ranging from 100Ah to 1,000Ah. Our electric compressors ensure that the operator remains comfortable while the engine is off. There are two options for heat, including an electric coolant pump and a fuel-fired heater. We also offer expansion modules such as a 1.25kWh energy expansion pack for situations when more power is required. Our A/C expansion module provides even more cooling capacity to keep you cool in even the harshest of climates.

ZeroRPM Checklist

  • Improve operator safety and comfort

    The IMS® provides full use of all HVAC and electrical components without the fumes and noise from an idling engine. The system’s automatic delivery of heat, air conditioning , and power for equipment in park (as if the engine were running while the engine is off) means few distractions. A focused operator is a safe and happy operator.

  • Reduce emissions and protect the environment

    A gallon of gasoline and a gallon of diesel fuel produce 18.95 lbs and 22.06 lbs of CO2, respectively. This translates to more than 31 tons of harmful emissions per double-shift vehicle each year. A fleet of 20 vehicles working 262 days a year could produce more than 4.5 million lbs of CO2 and other harmful emissions over their service lives.

  • Reduce fuel consumption

    Diesel engines consume 0.9-1.2 gallons of diesel fuel during every hour of idling. When an engine's RPM gauge is at zero RPM, it consumes 0.0 gallons of fuel per hour, resulting in a typical payback from fuel savings ranging from two to four years.

  • Reduce operating cost

    Every hour an engine idles, it is estimated to create the same wear and tear as 33 miles of driving. Many fleets reduce the payback period by 1/3 or more when maintenance cost reduction and asset life extension are factored into the payback calculation. DPF regenerations are often cut in half and manual regenerations are usually eliminated.

Engine-off A/C Through the Factory Vents

Using patented ZeroRPM technology, the system provides cooling through the factory vents without running thechassis engine.

Engine-off Heat Through the Factory Vents

The system provides heating through the factory vents without running the chassis engine. You no longer have to enter a freezing vehicle on a cold day!

Lithium-Iron Power to AllElectronics

Using safe Lithium-Iron batteries, the system provides power to all electronics (e.g. radio, lights, and computers) without running the chassis engine. The batteries have a five-year warranty.

Automatic Recharging

The batteries charge natively from a 12V alternator. Solar panel and shore power integrations are optional.


ZeroKEY allows you to securely leave the vehicle while our system takes care of climate control and powering your electronics. When you return to the vehicle everything will be in operation as you left it.


ZeroIDLE prevents the IMS® from automatically starting the engine in "no-idle" zones. The operator can be notified by an optional buzzer, backup alarm, or voiceannunciator.


Our system protects the chassis batteries from being drained from your vehicle's accessories. This protects you from returning to your vehicle to find a dead chassis battery.

Electric PTO Optional

The system can provide energy to powered take-off equipment such as hydraulic buckets, booms, and lifts, all while the engine is off.

ZeroRPM Architecture