Engine Preheaters for Generator Sets

Compare the main series first. Open the full model list, parameter table and dimension drawing only when you need deeper technical details.

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Quick Series Decision

Use confirmed product type, control method and catalogue power range to identify the most relevant series. Series without a confirmed circulation classification are still included in the complete library below.

Self-Circulating Engine PreheatersConfirmed series: EHA, EHA/S, EHB and EHC.

Forced-Circulation Engine PreheatersConfirmed series: EHD, EHDC and EHE.

Complete Engine Preheater Product Library

Review each series summary first, then expand the complete model list, parameter table and dimension drawing when deeper technical detail is needed.

Standard VersionElectronic Temperature ControlSelf-Circulating

EHA Engine Preheater

The standard self-circulating series uses electronic temperature control with microprocessor control and power/operating indication.

Model Count9 models

Voltage240VAC, 120VAC, 50VDC

Power500-2000 W

Displacement2.5-11.5 L

Weight1.2 kg per listed model

ControlElectronic temperature control

Full Model List

EHA1005V3, EHA1010V3, EHA1015V3, EHA1020V3, EHA1005V1, EHA1010V1, EHA1015V1, EHA1005V0, EHA1010V0

Parameter Table

Dimension Drawing

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Simplified Economical VersionBimetal ThermostatSelf-Circulating

EHA/S Engine Preheater

A simplified, lower-cost self-circulating series using a bimetal thermostat for straightforward generator applications.

Model Count7 models

Voltage240VAC, 120VAC

Power500-2000 W

Displacement2.5-11.5 L

Weight1.2 kg per listed model

ControlBimetal thermostat

Full Model List

EHA/S1005V3, EHA/S1010V3, EHA/S1015V3, EHA/S1020V3, EHA/S1005V1, EHA/S1010V1, EHA/S1015V1

Parameter Table

Dimension Drawing

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Multiple Voltage Options

EHG/S Engine Preheater

EHG/S combines a 2000-4000 W range with 120VAC, 240VAC and 480VAC catalogue options for projects that need broader supply-voltage coverage.

Model Count6 models

Voltage240VAC, 120VAC, 480VAC

Power2000-4000 W

Displacement12-22 L

Weight2.1 kg per listed model

Full Model List (6 Models)

EHG/S1030V3, EHG/S1040V3, EHG/S1020V1, EHG/S1030V1, EHG/S1030V6, EHG/S1040V6

Parameter Table

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Dimension Drawing

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120VAC and 240VAC Options

EHG Engine Preheater

EHG provides a focused four-model range from 2000 W to 4000 W across the two listed supply voltages.

Model Count4 models

Voltage240VAC, 120VAC

Power2000-4000 W

Displacement12-22 L

Weight2.2 kg per listed model

Full Model List (4 Models)

EHG1030V3, EHG1040V3, EHG1020V1, EHG1030V1

Parameter Table

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Dimension Drawing

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Self-Circulating

EHB Engine Preheater

A compact self-circulating series with two catalogue-listed 240VAC models.

Model Count2 models

Voltage240VAC

Power2000-2500 W

Displacement11.5-13 L

Weight3.5 kg per listed model

Product TypeSelf-circulating

Full Model List (2 Models)

EHB1020V3, EHB1025V3

Parameter Table

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Dimension Drawing

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Self-Circulating

EHC Engine Preheater

A self-circulating series covering 2000-5000 W with 120VAC and 240VAC catalogue options.

Model Count5 models

Voltage240VAC, 120VAC

Power2000-5000 W

Displacement11.5-27 L

Weight5.2 kg per listed model

Product TypeSelf-circulating

Full Model List (5 Models)

EHC1030V3, EHC1040V3, EHC1050V3, EHC1020V1, EHC1030V1

Parameter Table

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Dimension Drawing

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A1 and B1 Variants

EHC/S Engine Preheater

EHC/S groups A1 and B1 variants across 120VAC, 240VAC and 480VAC, with catalogue power options from 2000 W to 5000 W.

Model Count16 models

Voltage240VAC, 120VAC, 480VAC

Power2000-5000 W

Displacement11.5-27 L

WeightA1: 5.2 kg; B1: 4.6 kg

Full Model List (16 Models)

EHC/S1030V3-A1, EHC/S1040V3-A1, EHC/S1050V3-A1, EHC/S1020V1-A1, EHC/S1030V1-A1, EHC/S1030V6-A1, EHC/S1040V6-A1, EHC/S1050V6-A1, EHC/S1030V3-B1, EHC/S1040V3-B1, EHC/S1050V3-B1, EHC/S1020V1-B1, EHC/S1030V1-B1, EHC/S1030V6-B1, EHC/S1040V6-B1, EHC/S1050V6-B1

Parameter Table

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Dimension Drawing

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Current Version

EHE Engine Preheater

The current forced-circulation EHE is the main version, with upgraded appearance and components and three catalogue power options from 2000 W to 3000 W.

Model Count3 models

Voltage240VAC

Power2000-3000 W

Displacement12-23 L

Weight3.7 kg per listed model

Product TypeForced-circulation

Full Model List (3 Models)

EHE1020V3, EHE1025V3, EHE1030V3

Previous-Generation EHE Availability

Previous-generation EHE configurations, including the valid 1.5 kW EHE1015 option, remain available. Contact us for legacy configuration support.

Parameter Table

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Dimension Drawing

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4000-6000 W Range

EHF Engine Preheater

EHF covers three 240VAC power steps for catalogue applications from 30 L to 50 L displacement.

Model Count3 models

Voltage240VAC

Power4000-6000 W

Displacement30-50 L

Weight4.9 kg per listed model

Full Model List (3 Models)

EHF1040V3, EHF1050V3, EHF1060V3

Parameter Table

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Dimension Drawing

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Three-Phase Configurations

EHDA Engine Preheater

EHDA combines 208VAC and 415VAC three-phase configurations with left- and right-side model variants across four power steps.

Model Count12 models

Voltage415VAC/3P4W, 208VAC/3P4W

Power4500-12000 W

Displacement30-100 L

Weight13.7 kg per listed model

Full Model List (12 Models)

EHDA4045V5L, EHDA4060V5L, EHDA4090V5L, EHDA4120V5L, EHDA4045V2L, EHDA4060V2L, EHDA4045V5R, EHDA4060V5R, EHDA4090V5R, EHDA4120V5R, EHDA4045V2R, EHDA4060V2R

Parameter Table

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Dimension Drawing

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Forced-Circulation

EHDC Engine Preheater

A forced-circulation series with 12 catalogue models, two three-phase voltage configurations and left/right variants.

Model Count12 models

Voltage415VAC/3P4W, 208VAC/3P4W

Power4500-12000 W

Displacement30-100 L

Weight13.0 kg per listed model

Product TypeForced-circulation

Full Model List (12 Models)

EHDC4045V5L, EHDC4060V5L, EHDC4090V5L, EHDC4120V5L, EHDC4045V2L, EHDC4060V2L, EHDC4045V5R, EHDC4060V5R, EHDC4090V5R, EHDC4120V5R, EHDC4045V2R, EHDC4060V2R

Parameter Table

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Dimension Drawing

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Forced-CirculationSingle-phase and Three-phase Options

EHD Engine Preheater

A forced-circulation series with a broad catalogue range for projects requiring multiple power, voltage and phase configurations.

Model Count54 models

Voltage120, 208, 240, 277, 415, 480VAC

Power4000-12000 W

Displacement30-100 L

Weight21.8 kg per listed model

Current5.4-48.0 A

Full Model List (54 Models)

EHD3045V5L, EHD3060V5L, EHD3090V5L, EHD3120V5L, EHD3045V6L, EHD3060V6L, EHD3090V6L, EHD3120V6L, EHD3045V2L, EHD3060V2L, EHD3090V2L, EHD3120V2L, EHD1040V2L, EHD1045V2L, EHD1060V2L, EHD1090V2L, EHD1045V3L, EHD1060V3L, EHD1090V3L, EHD1120V3L, EHD1045V4L, EHD1060V4L, EHD1090V4L, EHD1120V4L, EHD1045V6L, EHD1060V6L, EHD1090V6L, EHD3045V5R, EHD3060V5R, EHD3090V5R, EHD3120V5R, EHD3045V6R, EHD3060V6R, EHD3090V6R, EHD3120V6R, EHD3045V2R, EHD3060V2R, EHD3090V2R, EHD3120V2R, EHD1040V2R, EHD1045V2R, EHD1060V2R, EHD1090V2R, EHD1045V3R, EHD1060V3R, EHD1090V3R, EHD1120V3R, EHD1045V4R, EHD1060V4R, EHD1090V4R, EHD1120V4R, EHD1045V6R, EHD1060V6R, EHD1090V6R

Large Parameter Table

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Dimension Drawing

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Single- and Three-Phase Options

EHDD Engine Preheater

EHDD provides extensive voltage, phase, power and left/right configuration choices while keeping its complete 54-model list inside the expandable section.

Model Count54 models

Voltage120, 208, 240, 277, 415, 480VAC

Power4000-12000 W

Displacement30-100 L

Weight21.8 kg per listed model

Current5.4-48.0 A

Full Model List (54 Models)

EHDD3045V5L, EHDD3060V5L, EHDD3090V5L, EHDD3120V5L, EHDD3045V6L, EHDD3060V6L, EHDD3090V6L, EHDD3120V6L, EHDD3045V2L, EHDD3060V2L, EHDD3090V2L, EHDD3120V2L, EHDD1040V2L, EHDD1045V2L, EHDD1060V2L, EHDD1090V2L, EHDD1045V3L, EHDD1060V3L, EHDD1090V3L, EHDD1120V3L, EHDD1045V4L, EHDD1060V4L, EHDD1090V4L, EHDD1120V4L, EHDD1045V6L, EHDD1060V6L, EHDD1090V6L, EHDD3045V5R, EHDD3060V5R, EHDD3090V5R, EHDD3120V5R, EHDD3045V6R, EHDD3060V6R, EHDD3090V6R, EHDD3120V6R, EHDD3045V2R, EHDD3060V2R, EHDD3090V2R, EHDD3120V2R, EHDD1040V2R, EHDD1045V2R, EHDD1060V2R, EHDD1090V2R, EHDD1045V3R, EHDD1060V3R, EHDD1090V3R, EHDD1120V3R, EHDD1045V4R, EHDD1060V4R, EHDD1090V4R, EHDD1120V4R, EHDD1045V6R, EHDD1060V6R, EHDD1090V6R

Large Parameter Table

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Dimension Drawing

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Related Resources

Plan the Application Before Model Matching

Coolant Heating ApplicationReview the application and circulation paths. EHA vs EHA/SCompare confirmed control and catalogue differences. Selection GuidePrepare engine, environment and installation inputs. Engine Preheater FAQReview common technical and model-matching questions.

Explore the complete Cold Start Solution · Natural vs Forced Circulation