No sensors or retrofits
Integrates directly with your existing BMS. Deploy quickly across any building management system with minimal disruption.
Patented AI · NTU Spin-off
Cut chiller energy 15–20% — through software, not hardware
GRAM Tech optimises HVAC through your existing BMS. No sensors. No retrofits. Deploy in weeks, not months.
18%
Avg. chiller electricity reduction
0
IoT sensors required
~12 mo
Typical payback period
Why GRAM Tech
Software-first HVAC optimisation
Buildings waste energy guessing cooling demand. GRAM Tech learns your building's behaviour and optimises in real time — without disrupting tenants or installing new hardware.
15–20% energy savings
Real-world results from commercial buildings. Independently audited savings on chiller electricity consumption.
AI that learns your building
Advanced machine learning adapts to airside and waterside characteristics, getting smarter with every day of operation.
Innovations made simple
Smarter with every use, without the complexity of IoT
GRAM Tech learns from your building's behaviour and continuously improves — delivering advanced AI optimisation through software alone.
Explore GRAM Tech
How it works
From BMS connection to measurable savings
Connect
Integrate with your existing BMS — no additional hardware required
Learn
AI models your building's airside and cooling load patterns
Optimise
Real-time setpoint adjustments aligned with chiller efficiency
Report
Track savings, equipment health, and sustainability metrics
Built for your role
Solutions for every stakeholder
Maximise asset value with proven ROI
Reduce operating costs and meet green building targets without capital-intensive retrofits.
- Typical 12-month payback on software investment
- Scale across your portfolio with fast deployment
- Support Green Mark and ESG reporting goals
- Start with a low-risk Proof of Value on one building
Portfolio savings overview
Before vs. after GRAM deployment
Optimise operations without disruption
Keep tenants comfortable while reducing energy waste — all through your existing BMS.
- Non-intrusive deployment in under 3 months
- No tenant disruption during installation
- Smart equipment diagnostics for proactive maintenance
- Real-time airside responsiveness monitoring
BMS integration status
● Connected · Optimising · All zones nominal
Chiller plant efficiency: +4% improvement
Meet sustainability targets with data
Quantifiable carbon reduction backed by independent audit and analytics partnerships.
- Measurable reduction in chiller electricity consumption
- Pleo-GRAM analytics via Power BI on Azure
- Contribute to climate-ready, sustainable cities
- Third-party validated results (Beca audited)
Carbon impact dashboard
-19.6%
Chiller cooling load reduction (POV result)
Impact in practice
Real buildings, real savings
Featured deployment
City House, Singapore CBD
23-storey office building owned by City Developments Limited. Full-building deployment in under 3 months with minimal tenant disruption.
“GRAM’s expertise and innovative approach have not only enhanced our energy efficiency but also reinforced our commitment to sustainability, and the results speak for themselves.”Lim Ke-Vin · City Developments Limited
16%
Chiller electricity reduction
4%
Chiller plant efficiency gain
Proof of Value
Green Mark Platinum Office
800,000 sq ft commercial building. Results independently audited by Beca, demonstrating savings even on high-performing green buildings.
“What stood out to us was how seamlessly it worked with the existing systems — no additional devices were needed, and there was no disruption to tenants. The optimisation translated into tangible energy savings.”Irene Yong · Beca
18.1%
Electricity savings
19.6%
Cooling load reduction