Back to Product Search

CTM HOTflow® Engine Heater

Sectors

Equipment
Engine

Markets

Applications

Product Categories

Pump Driven Heaters

An efficient forced circulation system that allows for a variety of small engine applications.

Despite its small footprint, efficient forced circulation allows the HOTflow® CTM system to heat engines up to 20 liters in displacement, allowing for a wide variety of weather-protected small engine applications. Multiple options are available, including UL/C-US listed and CE-compliant models.

The CTM’s inlet and outlet may be reoriented at 90° increments to accommodate heater plumbing. The included mounting kit is ideal for most installations; an optional vibration isolation kit is also available. Forced circulation provides uniform heat throughout the engine, reducing component maintenance and offering significant energy savings - resulting in end-user utility cost reductions up to 35%*.

*Savings are dependent on local utility rates and installation variables.

Not intended for hazardous locations.

Heating Information

Primary Heating

Water
Coolant Mix

Primary Heat Power

1 kW
1.5 kW
2.5 kW

Power Specifications

Power Sources

AC, Single-Phase, 60 Hz
AC, Single-Phase, 50 Hz

Voltages

120
240

Power Connectors

NEMA Plug
Euro Plug (Schuko)
Hardwired

Temperature Control

Primary Temperature Control

100–120 °F (38–49 °C)

Primary High Limit Temperature

300°F (149°C)

Mount Types

Bracket

Inlets / Outlets

Inlets

0.625” hose barb (15.9 mm)

Outlets

0.625” hose barb (15.9 mm)

Ingress Options

System Ingress

IP44

Certifications

CE-compliant models available
UL-C / US listed

CTM HOTflow® Engine Heater

Part Number

Voltage

Wattage

CTM10110-A00

120

1 kW

Replacement Parts List

CTM10110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10110-CTM	CTM REPL ELEM ASM 1000W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10110-N00

120

1 kW

Replacement Parts List

CTM10110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10110-CTM	CTM REPL ELEM ASM 1000W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-A00

240

1 kW

Replacement Parts List

CTM10210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-E00

240

1 kW

Replacement Parts List

CTM10210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM10210-N00

240

1 kW

Replacement Parts List

CTM10210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1 kW Element	RE10210-CTM	CTM REPL ELEM ASM 1000W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15110-A00

120

1.5 kW

Replacement Parts List

CTM15110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15110-CTM	CTM REPL ELEM ASM 1500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15110-N00

120

1.5 kW

Replacement Parts List

CTM15110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15110-CTM	CTM REPL ELEM ASM 1500W 120V 100-120F		3 lb (1.4 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-A00

240

1.5 kW

Replacement Parts List

CTM15210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-E00

240

1.5 kW

Replacement Parts List

CTM15210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM15210-N00

240

1.5 kW

Replacement Parts List

CTM15210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	1.5 kW Element	RE15210-CTM	CTM REPL ELEM ASM 1500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25110-A00

120

2.5 kW

Replacement Parts List

CTM25110-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25110-CTM	CTM REPL ELEM ASM 2500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25110-N00

120

2.5 kW

Replacement Parts List

CTM25110-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25110-CTM	CTM REPL ELEM ASM 2500W 120V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-A00

240

2.5 kW

Replacement Parts List

CTM25210-A00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-E00

240

2.5 kW

Replacement Parts List

CTM25210-E00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

CTM25210-N00

240

2.5 kW

Replacement Parts List

CTM25210-N00 Replacement Parts List

Part Image	Name	Replacement Part Number	Part Description	Dimensions	Weight
	2.5 kW Element	RE25210-CTM	CTM REPL ELEM ASM 2500W 240V 100-120F		3 lb (1.4 kg)
	Thermostat	RSU10-TF	SENSING UNIT 1012 W/ 300 THERMOFUSE	5 x 4 x 3 in (127 x 102 x 76 mm)	0.1 lb (0.05 kg)
	Pump	CTM-P	REPL PUMP ASM CTM	4 x 4 x 4 in (102 x 102 x 102 mm)	3 lb (1.4 kg)
	Seal Kit	CTM-SK	KIT CTM SEAL	4 x 4 x 4 in (102 x 102 x 102 mm)	1 lb (0.5 kg)

Related Products

CKM HOTflow® Engine Heater

The CKM can ensure diesel or gas engines are ready to start and assume full load quickly with minimal wear.

The CKM model heater is designed to be a true drop-in replacement for legacy convection-based systems. Featuring a mechanically-driven pump and a custom-designed pump volute mated to a stainless-steel…

Primary Heating

Water
Coolant Mix

Primary Heat Power

3 kW
4 kW
5 kW

CSM HOTflow® Engine Heater

A pump-driven forced circulation that provides superior heat distribution while improving heater performance.

The HOTflow® CSM engine heater features the most powerful pump (10 gpm flow) and most powerful heating element options (up to 12 kW) in the HOTflow® lineup. The CSM's heating power, combined with…

Primary Heating

Water
Coolant Mix

Primary Heat Power

3 kW
6 kW
9 kW

CSM Euro HOTflow® Engine Heater

Hotstart-CSM-Euro-HOTflow-Coolant-Engine-Heater

The CSM Euro features the most powerful pump (10 gpm flow) and most powerful heating element options (up to 12 kW) in the HOTflow lineup. The CSM's heating power in an energy efficient system is ideal…

Primary Heating

Water
Coolant Mix

Primary Heat Power

3 kW
6 kW
9 kW