what is a heat exchanger for a house - Nordic Tec
Plate Heat Exchanger NORDIC Ba-12-40 85kW 3/4" DN20
what is a heat exchanger for a house - Nordic Tec
Plate Heat Exchanger NORDIC Ba-12-40 85kW 3/4" DN20

Plate Heat Exchanger NORDIC Ba-12-40 3/4" 85kW

Plate Heat Exchanger with 40 plates / Inox NORDIC TEC Ba-12-40

Plate Q'ty: 40 pcs.
Connections: 3/4" BSP
Heat Exchange Area: 0.48m²

The heat exchanger features 40 steel plates designed for heat exchange in both central heating (CH) systems and cooling systems. With a total plate surface area of 0.48m², it is suitable for servicing small heating devices such as gas boilers, boilers using other types of fuels, as well as water jacket fireplaces.
The Ba-12-40 40-plate heat exchanger can be purchased separately or with accessories such as heat exchanger insulation or a mounting kit (wall mounting with screws). The accessory selection menu for the heat exchanger is located just above the price.

Reference: NT Ba-12-40
Condition New
Accessories for PHE
  • Exchanger only (without accesories)
  • with Wall-Mounting+Fittings
  • With Thermal Insulation
  • Full Set (with Insulation&Wall-mounting with Fittings)
On stock
VAT included


Heat Exchanger (BPHE) Nordic Tec Ba-12-40

4x 3/4", 40 plates

Biomass Boiler Heat Exchanger 40 plates 3/4"

Technical details:

  • Stainless Steel S316L, brazed with 99,9% Cu
  • Connections: 4x 3/4", BSP
  • Working Pressure - <10 bar, Tested with 20 bar
  • Max. temperature +230°C
  • Nominal flowrate - 4 m³/h
  • Heat Exchange Surface - 0.480 m²

    Wood stove heat exchanger with 40 plates Ba-12-40

The 40-plate heat exchanger in the Ba-12 series - the Ba-12-40 model - has a plate surface area of 0.48 m². As seen in the attached graph, it is not the largest heat exchanger in this series. If the plate area is too small, one may also consider a model one size larger, such as the Ba-12-50.


Sizing of a plate heat exchanger for a heating system, with the most common heating devices

If you are about to size the correct plate heat exchanger for your fireplace, gas boiler or any other heat source working with similar temperatures (45-60oC) we suggest you to hold on to the converter 0.25-0.3m² of heat exchange area for 10kW of the device. The 40-plate model from the serie Ba-12 can work excellent way with similar devices (pellet, biomass, wood, coal, solid fuel as well) - when they are about 15-19kW.

This PHE is not a good choice for a Heat Pump - this type of heat sources requires much bigger plate surface.

The surface of the plates in the plate exchanger is the most important selection parameter and it says how efficient this model is in comparison to other units. If you are looking for an exchanger for a gas furnace or other type of heating boiler-then the 40-plenty Ba-12-40 model is appropriate, provided that they are devices with a capacity of around 16-19kW. If you select a fireplace or other more inert device based on a water jacket and working in an open system-Ba-12-40 will safely handle a 16-17 kW device.

A 40-plate heat exchanger for connecting an electric boiler

This model is also suitable if you need to connect an electric or electrode furnace. In this case, the most important parameter of selection is the area of the heated surface - this model will easily heat the house up to 150 m² or even 180 in the case of newer construction. If we plan to use the heat exchanger to connect the electrode boiler - it should be remembered that you should give up water treatment with salt.

Heat Exchangers for stoves - Nordic Tec
(A) -
191 mm
(B) -
73 mm
(F) -
97 mm
(C) -
154 mm
(D) -
40 mm

In DOWNLOAD section you get the data sheet of the unit.

How does a Plate Heat Exchanger work in a heating or cooling installation?

A plate heat exchanger consists of thin steel plates that are placed paralel one above the other. It forms series of channels for fluids to flow in spaces between the PHE plates. Flowing through the exchangers both fluids just exchange the temperatures, without mixing them. The key is to size the unit correctly up to your needs, with the heat exchange surface big enough.

Wood burner heat exchanger - Nordic Tec Ba-12-40 3/4"

The Nordic Tec Ba-12-40 3/4" wood burner heat exchanger is a compact -but also efficient solution for enhancing the performance of wood-burning boilers - but as well for classic water fireplaces. This plate heat exchanger is specifically designed to harness the heat ( generated by wood burners ) - and transfer it to the heating system, maximizing energy utilization.

With its sturdy construction and high-quality materials - Stainless Steel, the 40-plate Ba-12-40 heat exchanger ensures durability and reliabity of handling the wood burners up to the 16-17 kW (in order to handle bigger wood burners or fireplace -  check the wood burner heat exchanger with 50 plates - like Ba-12-50).

Its compact design allows for easy installation and integration into existing wood-burning boiler systems, even for diving the system between the open and sealed parts. The 3/4" connections enable seamless connection to the water circuit, facilitating efficient heat transfer. If you appreciate the comfort and you don't want to waste your time - check also the dedicated wall-mounting set - it can be ordered directly in set with Ba-12-40 plate heat exchanger.

By using a 40-plate heat exchanger - Nordic Tec Ba-12-40 optimizes heat exchange between the wood burner and the heating system - increasing overall energy efficiency. It effectively captures and transfers the heat from the wood burner to the water, enabling efficient heating of domestic hot water or space heating.

The Ba-12-40 heat exchanger is a reliable choice for those seeking --> to improve the performance of their wood-burning boilers or stoves. With its innovative design and exceptional heat transfer capabilities -- it provides an efficient and sustainable solution for harnessing the energy from wood burners.

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