Upgrade your HVAC system today and unlock lasting value
With RetroFIT+, cut energy costs, secure asset value, and achieve sustainability goals.
Start smart, avoid overspending
Begin your RetroFIT+ project by optimising your HVAC system to achieve savings and improve performance — before committing to larger, potentially unnecessary modernisation projects. Only invest where it truly adds value.
What you gain with this approach:
- Fast return on investment, immediate impact, low downtime: Smaller, OPEX-sized projects deliver results quickly.
- Right-sizing benefits: Lower peak load after optimisation (~5–15%) lets you select smaller, more cost-effective equipment later.
- Comfort preserved: Sequencing and hydronic fixes reduce complaints, overrides, and noise.
- Decision clarity: Belimo provides prioritisation of the next steps with costs, savings ranges, and operational risk insights — giving you confidence at every stage.
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| Potential energy savings | 10–25% | 10–30% | 10–30% |
| Return on investment | 0.5–4 years | 2–7 years | 10–20+ years |
| Downtime | less than 1 day | 1 day to 1 week | 3 months to 1 year |
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*Lower peak load after Stage 1 reduces equipment and auxiliaries in Stage 2, cutting future CAPEX as well as energy use. |
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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
RetroFIT+ Assessment Tool — get fast results
Quickly assess your building with the Belimo RetroFIT+ Assessment Tool and uncover its savings potential with specific measures.
What you get:
- ISO 52120-based assessment
- Energy savings and carbon impact analysis
- Fault detection and quick wins
- Cost savings, investment estimate, and break-even calculation
Regulatory requirements are tightening — RetroFIT+ helps you stay compliant
European requirements are increasing the need for better controls, clearer performance evidence, and stronger energy management. RetroFIT+ helps building owners assess comfort and ventilation, improve control performance, and support audits, compliance reviews, and funding discussions.
Important standards
• EPBD recast and national BACS implementation • EN 16798 comfort and IAQ benchmarks • ISO 52120 for controls and automation • UK ESOS for qualifying organisations
RetroFIT+ helps achieve compliance
• Document comfort and ventilation performance • Review controls against recognised functions • Prepare audit-ready evidence and action plans
Financial subsidies
• BEG/BAFA and KfW in Germany • CEE white certificates in France • National and utility schemes across the EU and UK
Energy codes, benchmarking expectations, and incentive programmes are increasing the pressure to prove HVAC performance and control effectiveness. RetroFIT+ helps building owners validate results, improve sequences and setpoints, and support reporting, tax deductions, and utility incentive cases.
Important standards
• ASHRAE 90.1 (energy efficiency) • ASHRAE 62.1 (ventilation) and ASHRAE 55 (comfort) • 2024 IECC, where locally adopted ENERGY STAR Portfolio Manager benchmarking
RetroFIT+ helps achieve compliance
• Validate before and after performance • Improve control sequences and setpoints • Support benchmarking and compliance documentation
Financial subsidies
• Federal 179D tax deduction • State and utility incentive programs • Municipal incentives for public buildings and schools
Energy codes, green building frameworks, and ESCO-led retrofit models are increasing the need for clear performance evidence. RetroFIT+ helps building owners document comfort, ventilation, and energy performance, package measurement and verification evidence, and support submissions under local sustainability frameworks.
Important standards
• Australia NCC 2022 Section J • NABERS operational ratings • Singapore BCA Green Mark 2021
Financial subsidies
• State and utility schemes tied to Section J measures • Higher NABERS rating can support asset value • Green Mark upgrade pathways
RetroFIT+ helps achieve compliance
• Improve controls, setpoints, and scheduling • Set up metering and performance tracking to support better NABERS ratings • Support Green Mark documentation on HVAC system efficiency and performance verification
Energy codes, green building frameworks, and ESCO-led retrofit models are increasingly needed for clear performance evidence. RetroFIT+ helps building owners document energy, comfort, and ventilation results. It also supports retrofit planning and preparation for financed upgrade programmes.
Important standards
• Saudi Energy Conservation Code (SBC 601) • Abu Dhabi Estidama Pearl framework • GSAS in Qatar • Dubai retrofit programs and ESCO models
RetroFIT+ helps achieve compliance
• Produce audit-ready comfort and ventilation records for local green codes • Package measurement and verification evidence for ESCO contracts • Map documentation to Estidama and GSAS requirements
Financial subsidies
• ESCO-financed retrofit models • Municipal and utility-backed savings-share models
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)
How can you modernise a 40 year old high rise without a major capital investment?
Targeted HVAC retrofit reduces energy use by 28%.
At San Francisco’s iconic Four Embarcadero Center, an aging chilled water system with 2-way pressure-dependent globe valves and pneumatic actuators was struggling with low differential pressure (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
How can you modernise a 40 year old high rise without a major capital investment?
Targeted HVAC retrofit reduces energy use by 28%.
At San Francisco’s iconic Four Embarcadero Center, an aging chilled water system with 2-way pressure-dependent globe valves and pneumatic actuators was struggling with low differential pressure (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.
Trends transforming the building and HVAC industry by 2050
Global megatrends are changing buildings and the HVAC industry. These trends include climate change, a shortage of skilled workers, AI, and connectivity.
Learn how these forces will affect building automation and start your retrofit journey now.
Need help?
FAQ
How long does the assessment take?
Typically, about half a day, provided basic data is prepared in advance.
Will this disrupt tenants?
Usually, there is only minimal disruption to tenants. RetroFIT+ focuses on small, targeted retrofit measures that can be implemented with limited disruption to occupied buildings.
Who implements the measures?
Either your preferred technician or one of our qualified RetroFIT+ Partners can implement the measures.
Is this a capital or an operating expense?
In most cases, this is a CAPEX investment with fast ROI. Depending on the application and building conditions, break-even can be achieved in less than a year.
What if we do not have a modern building management system?
That is not a blocker. Many retrofit opportunities can be implemented without a modern BMS, while still creating better transparency and preparing the building for future digital integration.
How do we verify savings?
Verification becomes much easier when the right data is available. Products such as the Belimo Energy Valve, Thermal Energy Meter, and sensors provide transparent performance data, either through Belimo cloud-based insights or data collection in the building management system
Can we start small before committing to a larger retrofit?
Yes. RetroFIT+ is designed to start with targeted measures in high-impact areas, so you can validate results first and scale step by step.
RetroFIT+ redefined
Discover our innovative solutions that make HVAC modernisation simple and efficient. From smart valves to intelligent sensors and the powerful assessment tool, we deliver everything you need.
Belimo Energy Valve™
Gain transparent insights into energy flows and system health. Continuously monitor and turn data into verified performance.
Sensors and Meters
Turn existing building data into a ranked list of measures in hours with savings and payback bands, expected class uplift, and a decision-ready report
RetroFIT+ assessment tool
ISO 52120-compliant analysis for class uplift, break-even points, and prioritised measures — all-in-one intuitive platform. Our expertise made scalable.
Ready to act?
Start your RetroFIT+ journey today.