Work Process

Sustainable Retrofit in Progress: Solar, Battery Storage, and OCHSNER Heat Pumps At The Big Heat Pump Company, we’re excited to be working on a cutting-edge retrofit project that combines renewable energy and high-efficiency heating. As part of this complete retrofit, we are installing solar panels, battery storage, and OCHSNER heat pumps—creating a fully integrated, low-carbon energy system. This approach not only reduces energy bills but also significantly lowers the building’s carbon footprint. By combining solar generation with battery storage, the system maximises self-consumption, while the OCHSNER heat pumps provide reliable, efficient heating year-round. The project is a great example of how modern technologies can work together seamlessly to create sustainable, future-ready buildings. We look forward to sharing the finished results soon!

At The Big Heat Pump Company, we’re always looking for smarter, faster, and more efficient ways to deliver heating solutions—and our latest project for a London educational setting is a perfect example. Once the plant room was ready, our logistics team transported it directly to the school. The installation process was straightforward: the container arrived, was positioned on-site, and connected to the school’s existing systems. From start to finish, the school had a fully functional plant room with minimal disruption to their day-to-day operations. Looking Ahead This project demonstrates the future of plant room construction: modular, off-site, and ready to deploy. Schools, universities, and commercial clients can benefit from faster installation, higher quality, and reduced operational disruption—all while getting a fully bespoke heating solution. At The Big Heat Pump Company, we’re proud to deliver innovative solutions that combine efficiency, sustainability, and practicality. Whether it’s a small school or a large university campus, our containerised plant rooms make high-performance heating systems simpler than ever.

Cambridge Retrofit Complete: A Smart New Plant Room for an OCHSNER Air Hawk 208 We’ve recently completed another successful domestic retrofit—this time in Cambridge—where The Big Heat Pump Company has installed a new internal plant room to support an OCHSNER Air Hawk 208 heat pump. The project focused on upgrading the home’s heating system to a modern, efficient and future-ready solution while making best use of the existing space inside the property. Our team designed a bespoke plant-room layout to house the core system components neatly and accessibly, ensuring long-term reliability and ease of maintenance. From buffer vessels and hot-water cylinders to pumps, controls and distribution pipework, every element was installed with precision and care. The finished plant room is compact, tidy and well-organised—reflecting the high standards we apply to every domestic project, whether it’s a full system replacement or part of a wider refurbishment. The OCHSNER Air Hawk 208 was selected for its strong performance, quiet operation and ability to deliver consistent comfort even in colder conditions. Once commissioned, the system was carefully balanced and optimised to suit the property’s heat demand, giving the homeowner efficient, low-carbon heating and dependable hot water. Projects like this highlight how thoughtful design and quality installation make all the difference in retrofit settings. If you’re considering upgrading your home’s heating in England & Wales, The Big Heat Pump Company is proud to deliver expertly engineered solutions from start to finish.

Bespoke Plant Rooms, Delivered: Modular Energy Centres for Commercial Properties At The Big Heat Pump Company, we’re increasingly delivering bespoke, prefabricated plant rooms designed to make commercial decarbonisation faster, cleaner and more efficient. For many sites, whether urban rooftops, industrial yards, farms or estate developments, traditional plant-room construction can be disruptive, time-consuming and weather-dependent. Our solution is to design and build containerised energy centres off site, fully fitted with heat pumps, battery storage and associated controls, then deliver them ready to connect. Each modular plant room is engineered specifically for the project. We size the heat pump systems to match building loads, integrate battery storage to support peak demand and tariff optimisation, and include all necessary hydraulic equipment, electrical infrastructure, safety systems and monitoring. Once delivered to site—whether at ground level, craned onto a rooftop or positioned within a farmyard—the unit can be rapidly connected, commissioned and brought into service. Prefabrication offers major advantages for commercial clients. Factory-built environments allow for higher quality control, safer working conditions and precise installation of equipment and pipework. On site, disruption is reduced, programmes are shortened and weather delays are minimised—particularly valuable for operational buildings that need to stay open during works. These modular systems also offer exceptionally efficient performance. By designing the entire energy centre as a single integrated package, we can optimise hydraulic layouts, controls and storage strategies from day one—delivering reliable, low-carbon heating with lower running costs and long-term resilience. From logistics depots and agricultural estates to offices, schools and mixed-use developments, our containerised plant rooms are helping organisations transition to clean heat quickly and confidently. If you’re exploring commercial heat pumps or on-site energy storage, The Big Heat Pump Company can deliver a complete, bespoke solution—built off site and delivered ready to perform.