Energy Efficiency Upgrades: Reduce fuel consumption, improve system output and eliminate energy waste.
Reduce Cost, Improve Efficiency, Accelerate Decarbonisation
Industrial boilers account for up to 70% of a plant's total energy use. We engineer systems that dramatically improve performance, efficiency and reliability.
What We Deliver
Heat Recovery Systems: Capture waste heat and turn it into usable energy to cut operational costs.
Boiler Optimisation: Advanced tuning and control systems that improve steam reliability and efficiency.
Decarbonisation Pathways: Engineered plans that reduce emissions and prepare facilities for future standards.
Our Engineering Approach
Talk to our engineers
Assessment
Assessment
On-site measurement of how your plant really uses energy — an accurate baseline built from real operating data, not assumptions.
System Modelling
System Modelling
We model your thermal systems to pinpoint losses and test efficiency, fuel-switching and heat-recovery options before any spend.
Engineering Design
Engineering Design
A detailed solution sized to your plant, site and compliance needs — engineered to fit your operation, not the other way around.
Delivery & Optimisation
Delivery & Optimisation
Installed and commissioned with minimal disruption, then monitored and tuned to hold peak efficiency over the long term.
Why Businesses Choose O'Brien for Energy Engineering
Decades of expertise in energy systems — designed, installed and maintained by our engineering team.
Heat Pumps & Chillers
Finnish-engineered Oilon ChillHeat heat pumps and water chillers recover and upgrade waste heat from 50 kW to 8 MW. View a brochure or request a tailored assessment.
Oilon ChillHeat
Oilon ChillHeatIndustrial Heat Pumps & Water Chillers
High-efficiency heating and cooling from a single system.
- Heat Pump
- Water Chiller
- 50 kW – 8 MW
ChillHeat PPiston Compressor Series
High-temperature output up to 120°C with piston technology.
- Piston Compressor
- Up to 120°C
- High Efficiency
ChillHeat SScrew Compressor Series
High-capacity heating and cooling for large industrial loads.
- Screw Compressor
- High Capacity
- Low-GWP Refrigerants
Energy Services
Energy Services Guide
Audits, upgrades, certificates and verified savings. See how O’Brien identifies and delivers measurable energy efficiency across your operation.