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ETA 
Pellet boiler

Whether you want to build a new microgrid or modernise an existing one – we can offer you the right solution for a centralised and efficient heat supply with pellets! The perfect pellet boiler model is available for microgrids. Together with your planner or installer, we will find the optimal design, tailored to the size and specific heat requirements of your network.

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Pellets

ETA ePE-K

Perfect for large properties: with an integrated precipitator and external ash removal, this solution offers high efficiency, convenience and environmentally friendly operation.

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ETA 
Components

The right system for each situation
No two heating system are alike. Different requirements such as the integration of solar systems, the connection of multiple buffer storage tanks or the separation of heating circuits have so far required a high level of planning – often without standardised solutions for regulation and control. The implementation, especially the cabling, was quite complex. Therefore, ETA has developed modular components that can be flexibly combined to create an well-coordinated overall system. This allows heating solutions to be individually tailored to your specific circumstances together with the fitter or heating engineer – the right system for every situation.

ETA

SP-PLUS stratified buffer storage tank

The right temperature layer by layer! The ETA stratified buffer storage tank increases efficiency and reduces operating costs.

The buffer storage tank – the heart of heat distribution
Heat is stored here, which in turn can be accessed at any time if more energy is needed. So the buffer storage tank evens out peak and reduced loads and thus ensures a uniform and more efficient operation of the heating system and also a longer lifetime of the boiler. A well-adjusted stratified buffer significantly enhances comfort as well.

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ETA

SPS-PLUS stratified buffer storage tank

Sophisticated technology and efficient operation: The ETA SPS stratified buffer storage tank optimally turns solar energy into sustainable heat with a system.

Efficient heat storage using solar power
As a central element in the heating system, the stratified buffer storage tank plays a key role: In addition to absorbing energy from biomass, it also absorbs the heat generated by the solar thermal system and makes it available as needed – for hot water preparation as well as for heating support. This enables intelligent utilisation of energy surpluses, balances load fluctuations, and protects the boiler. This ensures not only consistent and economical operation but also significantly enhances living comfort—sustainably and efficiently.

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ETA

Fresh water module

Always hygienic, always fresh! Hot drinking water – always cleanly prepared.

Always hygienic, always fresh
The fresh water module ensures that the buffer storage tank is used even more efficiently. When hot water is needed in the house, the fresh water module kicks in: using the instantaneous water heater principle, it heats fresh cold water as needed and hygienically – exactly when it is required. For maximum comfort and consistently clean hot water.

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ETA

Stratified charging module

The stratified charging module ensures that the energy from a solar power system is used optimally in combination with a buffer storage tank.

Optimally harnessing the power of the sun:
The perfect stratification of solar heat into the buffer storage tank is made possible by the stratified charging module. This ensures optimal use of solar thermal energy for hot water preparation and heating support. For example in the morning when the sun is weak, the module supplies the lower half of the buffer. Once the sun is sufficiently strong to heat the upper, warmer buffer strata, the system switches to the upper half.

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ETA

System separation module

The system separation module separates heating systems, for example heating water and antifreeze solution

Clean separation for safe systems
Whenever heating circuits need to be separated, the ETA system separation module is used – for example, to separate residential heating from frost-protected areas such as workshops, stables or open areas. Separation also protects against damage in old underfloor heating systems or stable heating systems that introduce oxygen or pollutants into the system. The media are reliably separated from each other using a plate heat exchanger – similar to solar thermal systems.

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ETA

Mixing circuit module

The heating circuit module is a fully wired system for two heating circuits.

Heat distribution has never been easier: plug it in, and you're done!
This is how quickly a whole system can be installed: you've got your heat distribution under control with just a plug and a data cable. The ETA heating circuit module is suitable for all types of heat distribution - i.e., underfloor, wall and/or radiator heating as well as fan heaters.

The ETA heating circuit module for 2 mixing heating circuits saves a lot of time and money during installation, because there is no need to lay sensor lines, pump and mixing cables. All components are connected to the already integrated control system.

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ETA

Heat transfer module

The heat transfer station is the professional solution for private and commercial heating networks.

Efficient solutions for district and local heating
The heat transfer station from ETA is the professional solution for private and commercial heating networks. It is not only suitable for new builds but also especially good for the quick and economical renovation of buildings that don't have their own heating boiler.

The first heating circuit and hot water charging are integrated into the module and operate with only one highly efficient heating pump. In addition, the ETA module concept and the ETA touch control system also allow other solutions, so that individual systems can be designed. Whether you want to use your old oil boiler or plan a solar powered house – everything is possible!

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ETA

Transfer station

Compact, ready-to-connect heat transfer station with integrated ETA controls – ideal for district heating systems.

Efficient solutions for district and local heating
ETA transfer stations are available in various power ratings. These compact heat transfer stations are used for direct connection to district and local heating plants for indirect operation.

All those important components needed for a district heating operator are already pre-installed and pre-wired. Connection to a household system can also be done easily and individually. The ETA control is already integrated, and can be optionally expanded as required.

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ETA Reviews
What our partners & customers say

Hello, I installed an ETA PU 15 and it has been running perfectly since February 2025. What I would particularly like to praise is the customer service. I have never experienced customer service with this level of accessibility, competence and friendliness. Many thanks to Mr. Rammelmüller for your exceptional and perfect service. I'd give you 10 out of 5 stars :-) I'll happily recommend your products to my friends and acquaintances.

Ernst Siebein on Google

The first step is to call an engineer. He was able to help me immediately, in an easy-to-understand way. The next day I picked up a replacement part from the company. They immediately took care of me and explained everything to me. Mr. Chr. The spare parts department is more than competent and friendly! I (a trained plumber) can highly recommend this company!

Cactus Maximus on Google

Excellent customer service! After the pellet heating system started acting up for the first time in 12 years (right on New Year's Eve), customer service was contacted on 2nd January and the engineer was already at the door two and a half hours later and was able to fix the problem. This is how you ensure satisfied customers 👍👍

Klaus Zimmermann on Google

I've had the (bulk) heating system since 2009 and I'm very satisfied. Very good products.

Stefan Kaiser on Google

ETA 
Fuel calculator

Fuels in comparison
While the price of fossil fuels such as oil and gas is subject to heavy fluctuations in the international markets and will certainly rise in the long-term, the price of wood and pellets is stable. Calculate your heating costs with our fuel calculator.

Switching systems is worthwhile
Looking back 15 years – discover how much you could have saved by switching!