A guide to Biomass Heating

Below is a clear, structured guide to help you understand how Windhager systems work, what models exist, how to choose one, and what to expect in installation and operation.

What Windhager biomass heating is

Windhager manufactures biomass boilers that burn:

• Wood pellets (most popular).
• Wood logs.
• Wood chips.

These systems provide central heating and hot water while reducing carbon emissions and running costs. Windhager boilers are known for:

• High efficiency (92–96%) depending on model.
• Automated cleaning and ash removal on many units.
• Maintenance intervals generally once a year.
• 30% modulating output.
• Smart controls via the MyComfort app.

Choosing the Right Windhager Heating System

Here is a list of things to consider when choosing your Windhager biomass heating system:

1) Fuel Type

• Pellets – Best for convenience, automation, and compact storage.
• Logs – Cheapest fuel option, using advanced gasification technology for high efficiency, though it requires manual loading (typically once or twice a day).
• Chips – Best for large buildings with space for bulk storage, with automated suction feed systems minimising day-to-day handling.

2) Property Size

Choosing the right system depends on the size and heating output requirements of your property and its insulation values (U-Values).

As a general guide - 

• Small homes: Recommended boilers - BioWIN / LogWIN - 3-18kW.
• Medium homes: Recommended boilers - BioWIN / LogWIN / PuroWIN - 3-33kW.
• Large homes or commercial: Recommended boilers - BioWIN / LogWIN / PuroWIN 3-400kW.

3) Fuel Storage Requirements

Storage needs vary by fuel type:

• Wood pellet fuel needs a pellet store or hopper. Windhager offers pellet storage hoppers in various sizes, fully automated pellet suction feed systems, and conversion of storage rooms and outbuildings into pellet stores.
• Log boilers (LogWIN) need a dry log store or outbuilding, ideally close to the boiler for manual loading. Large filling chambers, with capacities of up to 226 litres, reduce how often restocking is needed.
• Wood chip boilers (PuroWIN) need a dry, covered chip store or bunker. A flexible, automated suction extraction system allows this store to be sited up to 25 metres away from the boiler.

4) Basic Maintenance Requirements

Windhager boilers require:

• Ash removal every few weeks or months, depending on the boiler fuel type and model.
• A professional annual service. Windhager’s 365 Support Plan covers this service for you and provides total peace of mind with direct access to our technical support team.

5) Running Costs & Efficiency

• Pellets are typically cheaper and more stable in price than oil or LPG. 2 kg of pellets ≈ 1 litre of heating oil (energy equivalent).
• Logs are generally the lowest-cost fuel by raw material price.
• Wood chips offer strong value at scale, particularly for larger properties and commercial use.
• Across the range, Windhager boilers achieve 92–96% efficiency, reducing fuel use.

6) Full Installation Overview

A typical installation includes:

• Boiler unit.
• Fuel storage solution appropriate to the system – pellet store or hopper, log store, or wood chip store (if required).
• Flue system.
• Buffer/accumulator tank (if required).
• Controls and safety systems.

Windhager UK offers a complete system design, commissioning, and aftercare service across the full boiler range, including pellet, log gasification, and wood chip systems.