Bortolussi Case Study: Heat Pump and Wood Fire Hybrid System

Smart, sustainable heating: A hybrid solution for comfort & savings

Our client sought an energy-efficient heating solution that would reduce their reliance on LPG gas, as they were experiencing particularly high running costs. The property, situated on acreage, had an abundance of fallen trees that could serve as a free energy source. Additionally, as the owners were not full-time residents, they required a system that could be operated remotely. Another key requirement was integrating pool heating into the system for year-round comfort.

To meet these needs, we designed and installed a hybrid hydronic heating system that could generate heat from both a hydronic heat pump and a wood fire boiler. This system provides warmth for both the home and the pool, offering flexibility, efficiency, and reduced operational costs.

Our Solution & Process

System Design

The project began with a comprehensive heat load analysis of the house to determine the optimal system specifications. We carefully sized the heat pump to ensure maximum efficiency and selected a wood fire boiler with an appropriate heat output. The system was designed to leverage the heat pump’s running temperature to maximise energy efficiency, while the panel radiators were sized to meet the home’s heating requirements at this temperature.

Once the design was finalised, we prepared a detailed quote for client approval. Prior to installation, we utilised a Stiebel Eltron plumbing schematic, incorporating the wood fire boiler, coil heat exchanger, and additional pump sets to guide the installation. Control systems were designed to allow seamless operation between the heat pump and wood fire, ensuring efficient heat management.

How the System Works

The system operates dynamically to maintain efficiency and cost-effectiveness:

• If heat is required, the system prioritises available heat sources.
• When the wood fire boiler is not in use, the heat pump runs automatically to maintain desired temperatures.
• When the wood fire is operational, the system detects the heat output and turns off the heat pump once the temperature surpasses the set threshold.

This setup allows for three modes of operation:

• Heat pump only
• Wood fire boiler only
• A combination of both to meet heating demand

The result is a comfortable home and warm pool year-round, with significantly reduced energy costs by taking advantage of free firewood and a highly efficient heat pump. 

Project Outcome

Our client now enjoys a cost-effective and sustainable heating solution, ensuring a consistently warm home and pool with minimal energy expenses. The system provides automatic, seamless operation, with the added convenience of remote access. By utilising firewood from the property and an energy-efficient heat pump, the homeowners benefit from an environmentally friendly system with the lowest possible running costs.

This project showcases the versatility and efficiency of hybrid hydronic heating, demonstrating how Peninsula Hydronic Heating delivers tailored solutions that prioritise comfort, sustainability, and long-term cost savings.