Heat Pump Technology

Engine Preheaters

Air-source heat pump technology reducing standby generator heating energy draw by up to 75% — the most efficient genset heater available.

Up to 75% Energy Savings
UL / CSA / CE Certified
Generators 1MW+
Engine Preheater
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The World's Most Efficient Genset Heater

Stallion engine coolant preheaters are designed to warm engine coolant before startup, helping diesel engines, generator sets and industrial equipment operate more reliably in low-temperature conditions. The range includes compact engine preheaters, inline coolant heaters and pump-assisted engine preheating systems for different engine sizes and installation requirements.

Available heating capacities range from 500W to 9000W, with DC 48V, AC 240V single-phase and AC 415V three-phase options. Depending on the selected model, the preheaters are suitable for engines from approximately 2 litres to 75 litres. Smaller models use 16mm coolant connections, while medium and high-capacity engine heaters use 1-inch NPT inlet and outlet connections.

Selected engine preheater models include temperature-control switches, digital control interfaces, alarm indications and integrated coolant circulation pumps. The range features IP44 protection, 10MΩ insulation resistance, 1800V voltage strength and heater chambers pressure tested to at least 0.5MPa, making it suitable for diesel generator preheating, industrial engine heating and cold-start applications.

Features & Benefits

Every aspect of the Energy Efficient Heater is designed to deliver maximum performance with minimum energy consumption.

75% Energy Reduction

Heat pump COP of up to 3.5 means for every 1kW of electricity consumed, up to 3.5kW of heat is delivered — dramatically cutting running costs.

Cold Start Reliability

Maintains waterjacket coolant at the optimal temperature 24/7, ensuring your generator achieves rated load within 10 seconds of start command.

Simple Retrofit

Integrates directly with existing heater infrastructure. Minimal downtime during installation — typically completed within one working day.

Remote Monitoring

Built-in connectivity allows real-time temperature monitoring and alerts — giving facility managers full visibility from anywhere.

Sustainability

Reduce your facility's carbon footprint by up to 28 tonnes of CO₂ per generator per year — supporting ESG targets without compromising reliability.

Proven ROI

Published whitepapers with Avista Utilities and INFRA Science & Engineering validate typical payback periods of 2–4 years depending on energy tariff.

Key Specifications

Detailed technical specifications for the Energy Efficient Genset Heater. Contact us for custom configurations.

Request Full Datasheet
TechnologyAir-Source Heat Pump
Generator Size1MW and larger
COP (Coefficient of Performance)Up to 3.5
Energy ReductionUp to 75%
Annual kWh Savings40,000+ kWh per unit
Operating Temperature Range-30°C to +50°C ambient
Coolant Temperature MaintainedConfigurable 30°C – 70°C
Power Supply208–480V, 3-phase, 50/60Hz
CertificationsUL Listed, CSA, CE Marking
Compatible OEMsCaterpillar, Cummins, MTU, Kohler
MonitoringRemote monitoring capable
Warranty2 years standard

Applications & Markets

The Energy Efficient Heater is ideal for any facility operating standby generators 1MW and larger where energy efficiency and reliability are both critical.

Data Centres

Reduce PUE and operating costs while maintaining 100% generator availability for Tier III and Tier IV facilities.

Hospitals

Meet sustainability targets without compromising the life-safety reliability demanded by healthcare facilities.

Universities

Support campus sustainability programs and reduce energy bills on large estate standby power installations.

Power Generation

Utility-scale and distributed generation facilities seeking to optimise auxiliary energy consumption.

Critical Infrastructure

Government, defence, and mission-critical facilities where reliability and efficiency are non-negotiable.

Industrial Facilities

Manufacturing plants and industrial sites with large standby or continuous power generation requirements.

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Energy Costs?

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