Future-proof your buildings with RetroFIT+
Achieve cost savings, better comfort, and regulatory peace of mind — all with one solution.
What is RetroFIT+?
RetroFIT+ is Belimo’s proven method for efficiently upgrading HVAC systems at scale. It combines expert guidance, ready-to-install solutions, and smart tools to deliver measurable energy savings with minimal disruption. The process is simple: Start with a quick assessment of the building, apply targeted improvements, verify them with data, and replicate success across your buildings.
Cut energy use and costs by up to 55%, without major disruptions
Improve comfort and indoor air quality
Get compliance-ready documentation that helps you qualify for incentives and stay confidently on track
Why retrofitting matters
Buildings consume vast amounts of energy and emit high levels of CO2. Rising costs and stricter regulations make energy inefficiency a financial and compliance risk. That’s why smart, energy-efficient HVAC solutions are essential.
30%
Buildings account for 30% of total global energy consumption.
27%
Buildings account for around a quarter of global CO2 emissions (~9.8 Gt), according to our study Building Tomorrow.
40%
About 40% of building energy costs are spent on heating, cooling, and ventilation.
Stay ahead of tightening regulatory standards
Intelligent, data-driven HVAC controls and operational performance are vital for achieving ESG goals and compliance. Delaying upgrades means missing out on savings and incentives while risking stranded capital.
How RetroFIT+ works — The PLUS Methodology
Profile:
- Assess buildings with the highest retrofit potential
- Focus on age, energy use, and system setup
- Result: Prioritised starting point
Log:
- Capture key system, control, and performance data
- Establish a transparent operational baseline
- Result: Fact-based assessment
Utilise:
- Pilot targeted improvements with minimal disruption
- Validate impact using real-time data
- Result: Proven measures
Sustain:
- Verify performance and confirm savings
- Scale successful solutions across the building portfolio
- Result: Portfolio-wide impact
Pick your path
Building owners and portfolio managers
Reduce energy cost, boost asset value, and achieve sustainability goals.
HVAC professionals
Access retrofit playbooks, product selection tools, and training to deliver high-performance retrofits.
Success you can measure
From reducing gas consumption by half at our Großröhrsdorf site to helping a New York City property manager reduce carbon emissions by 40%, Belimo solutions deliver real-world impact in energy efficiency. Discover how our customers achieve more with RetroFIT+.
Embarcadero Center, San Francisco (USA)
At San Francisco’s iconic Four Embarcadero Center, an aging chilled water system with two-way, pressure-dependent globe valves and pneumatic actuators was struggling with low Delta T, rising energy costs, and no visibility into hydronic performance.
Retrofitting the building with Belimo Energy Valves converted the legacy system to pressure‑independent control. The result: improved Delta T, real‑time system visibility, and hidden faults brought to light. The upgrade reduced chiller plant energy use by 28%, delivering around $131,000 in annual energy cost savings.
Success Story
Embarcadero Center, San Francisco (USA)
United States
At San Francisco’s iconic Four Embarcadero Center, an aging chilled water system with two-way, pressure-dependent globe valves and pneumatic actuators was struggling with low Delta T, rising energy costs, and no visibility into hydronic performance.
Retrofitting the building with Belimo Energy Valves converted the legacy system to pressure‑independent control. The result: improved Delta T, real‑time system visibility, and hidden faults brought to light. The upgrade reduced chiller plant energy use by 28%, delivering around $131,000 in annual energy cost savings.
Allseas (Netherlands)
Allseas, a company with global leadership in the offshore energy sector, is setting new standards in HVAC efficiency. To ensure the sustainable operation of the fleet and the comfort of up to 500 employees per vessel, the heating and cooling systems of the Allseas ships are being gradually equipped with Belimo Energy Valves. A special highlight of these modernisation measures is the retrofit of the "Pioneering Spirit", the world's largest construction vessel. The vessel, which can raise offshore platforms weighing up to 60,000 tons in a single lift, achieved impressive results by installing 175 Energy Valves: the pumps' current consumption was reduced from 600 kW to 120 kW — an energy saving of 82%.
Thanks to this targeted Belimo RetroFIT+ measure, Allseas is now saving approximately EUR 700,000 in energy costs each year. As a result of these significant savings, the project's payback period is just three years. This means that the company is making a significant contribution to economic efficiency and to the reduction of the ecological footprint of the offshore industry.Watch our video to learn how Allseas is using innovative Belimo valve technology to maximise energy efficiency at sea and significantly reduce operating costs.
Success Story
Allseas (Netherlands)
Netherlands
Allseas, a company with global leadership in the offshore energy sector, is setting new standards in HVAC efficiency. To ensure the sustainable operation of the fleet and the comfort of up to 500 employees per vessel, the heating and cooling systems of the Allseas ships are being gradually equipped with Belimo Energy Valves. A special highlight of these modernisation measures is the retrofit of the "Pioneering Spirit", the world's largest construction vessel. The vessel, which can raise offshore platforms weighing up to 60,000 tons in a single lift, achieved impressive results by installing 175 Energy Valves: the pumps' current consumption was reduced from 600 kW to 120 kW — an energy saving of 82%.
Thanks to this targeted Belimo RetroFIT+ measure, Allseas is now saving approximately EUR 700,000 in energy costs each year. As a result of these significant savings, the project's payback period is just three years. This means that the company is making a significant contribution to economic efficiency and to the reduction of the ecological footprint of the offshore industry.Watch our video to learn how Allseas is using innovative Belimo valve technology to maximise energy efficiency at sea and significantly reduce operating costs.
Paramount Group, New York (USA)
In response to a regulatory mandate in New York City focused on improving energy efficiency and reducing carbon emissions for large buildings starting in 2024, a major property management company upgraded key buildings with the Belimo Energy Valve™, a pioneering, IoT-enabled device designed to optimize energy use and maintain Delta T in HVAC systems.
The upgrade dramatically cut energy use and costs – saving over $1 million in electricity in 2023 alone. The effort also earned Paramount $2.1 million in utility incentives, aligned the buildings with 2030 carbon reduction goals, and secured top sustainability certifications. This marks a significant stride towards the 2050 carbon neutrality target, demonstrating a strong commitment to sustainability and efficiency. Watch the video to find out more about the CO2 reductions and cost savings.
Success Story
Paramount Group, New York (USA)
United States
In response to a regulatory mandate in New York City focused on improving energy efficiency and reducing carbon emissions for large buildings starting in 2024, a major property management company upgraded key buildings with the Belimo Energy Valve™, a pioneering, IoT-enabled device designed to optimize energy use and maintain Delta T in HVAC systems.
The upgrade dramatically cut energy use and costs – saving over $1 million in electricity in 2023 alone. The effort also earned Paramount $2.1 million in utility incentives, aligned the buildings with 2030 carbon reduction goals, and secured top sustainability certifications. This marks a significant stride towards the 2050 carbon neutrality target, demonstrating a strong commitment to sustainability and efficiency. Watch the video to find out more about the CO2 reductions and cost savings.
Belimo Office, Großröhrsdorf (Germany)
Belimo is committed to increasing energy efficiency and reducing CO₂ emissions in buildings. An example of our initiative is the upgrade of the heating system at our Großröhrsdorf site in Germany, which covers an area of approximately 19,000 m2. Before our own RetroFIT+ specialists intervened, the site consumed 750,000 kWh of gas annually.
Through a series of targeted adjustments and modernization measures, we successfully halved this consumption, resulting in an annual saving of 75 tons of CO₂. The payback period was approximately one year, and the annual savings amount to EUR 38,000. Watch our video to see the practical steps and technologies Belimo has employed to decrease energy use, lower costs, and contribute positively to the environment.
Success Story
Belimo Office, Großröhrsdorf (Germany)
Germany
Belimo is committed to increasing energy efficiency and reducing CO₂ emissions in buildings. An example of our initiative is the upgrade of the heating system at our Großröhrsdorf site in Germany, which covers an area of approximately 19,000 m2. Before our own RetroFIT+ specialists intervened, the site consumed 750,000 kWh of gas annually.
Through a series of targeted adjustments and modernization measures, we successfully halved this consumption, resulting in an annual saving of 75 tons of CO₂. The payback period was approximately one year, and the annual savings amount to EUR 38,000. Watch our video to see the practical steps and technologies Belimo has employed to decrease energy use, lower costs, and contribute positively to the environment.
Ready to act?
Start your RetroFIT+ journey today.
Downloads
RetroFIT+ Guides and Checklists
RetroFIT+ Guide
Guide
6.23 MBApplication book – Air handling units (AHUs)
Application book
9.41 MBBrochure – Guidance document for indoor air quality
Brochure
2.55 MB