Aalborg EH-W

The Alfa Laval Aalborg EH-W is a flow-through electric heater, ideal for heating technical treated water or available in a design applicable for bilge water.

Aalborg EH-W 630x360


Electric flow-through heater. Single-pass configuration with quick-change elements (QCE); also available as insert/immersion heater. Can be mounted vertically or horizontally as required.



The Aalborg EH-W (formerly VESTA™ EH-W) series heaters range from Ø150 mm to Ø400 mm shells; standard heating element lengths 1000 mm to 1.200 mm.

Other lengths on request.

Nozzles according to EN 1092-1 or JIS 16K are tailored to customers' individual requirements.


The heat load ranges from15 kW to 486 kW with a nominal surface load of 10 W/cm2. Any intermediate design is available from the standard range. The EH-W series is designed for 380 - 690 V AC; heating elements are manufactured to suit customer specific power source. Design pressure is 10 bar(g). Design temperature is 95 ºC.


The Aalborg EH-W series heat exchangers are primarily used as water heaters in ships. The flexible design makes them well suited for any application where electric power is the cheapest or the only available power source.


The target fluid is water. Other fluids on request.


The shell is fitted with two ½ inch sockets for mounting of safety valve and drain valve. The heater is fitted with a safety thermostat and a sensor pocket at the outlet for the working thermostat. A standard working thermostat with either step or PLC control is available; also, a Solid-State Relay-based control panel with a Pt100 temperature sensor can be supplied.


The Aalborg EH series is approved by ABS, BV, CCS, DNV, KR, LRS NKK, RINA, PED.


Alfa Laval Aalborg can deliver any Aalborg EH-W series heat exchanger within 7 weeks from receipt of order on FCA Aalborg basis. Emergency deliveries within few days for standard types.


Shell in carbon steel heating elements in stainless steel 1.4404 /AISI 316L

Other materials on request.


Alfa Laval Aalborg offers 12 months operating warranty on heat exchangers; maximum warranty is 18 months from time of delivery.


Features and benefits

  • Electrical flow through, outflow or immersion heater with stainless elements
  • Its heat load capacities range from 15 to 486 kW, with design conditions up to 10 bar(g) and 95°C.
  • The standard design Aalborg EH-W heater is approved by all major marine classification societies and is
    CE/PED approved.

Accessories (optional)

  • Safety valve
  • Drain valve
  • Pressure gauge
  • Thermometer
  • Pt. 100 sensor
  • Electronic or mechanical thermostat