Replace your outdated, worn-out rooftop unit and choose Oxyma’s energy-efficient, future-proof solutions.
Rooftops are a thing of the past. Step into the future of HVAC!
Rooftop systems offer a compact air handling solution for your facility, but they come with several disadvantages that have made them obsolete.
They use too much power, leading to increased operating costs.
In extreme heat, their performance dramatically decreases, which can lead to system failures.
They use harmful refrigerants that are increasingly difficult to meet sustainability regulations.
They have a short lifespan, requiring frequent replacements.
Rooftop Retrofit: The smart alternative
The Rooftop Retrofit Program is a unique offering in the HVAC market as it provides a cost- and energy-efficient alternative to outdated, worn-out rooftop units.
Ultra-efficient
Fast return on investment
Plug-and-Play
Futureproof
Modular
Demand-optimized
Your System, Our Technology
Our solution perfectly fits into your existing system, maintaining airflow, pressure boost, base frames, and the positions of duct connections.
Installation is as straightforward as replacing a traditional rooftop unit, with added benefits in terms of energy consumption, performance, and sustainability, making it an overall better, futureproof solution.
More than retrofit - A new era of decentralized climate control
The Rooftop Retrofit Program is a unique offering in the HVAC market as it provides a cost- and energy-efficient alternative to outdated, worn-out rooftop units.
Comprehensive energy service package
Weather-based energy and thermal calculations and simulations
Detailed on-site pre- and post-audits
EKR / TAO / HEM consulting and energy certification available upon request
Comprehensive design services
Mechanical, structural, automation, and electrical engineering design
Minimal structural demolition required
Perfect fit for existing rooftop structures
Modular system solution
Custom-designed climate control module
All-in-one water management station
Weather-responsive smart control that adapts to external environmental conditions
Industrial skylight covers that reduce solar heat load
Ongoing professional support
Lifecycle monitoring, service, and remote supervision
Measurable energy and water costs
Identifying grant opportunities and green financing options
Long-term rental options
PPA, ESCO financing
Simulation + performance tracking + predictive control = guaranteed results
Performance you can plan on
In real time, based on precise weather data
Our advanced, weather-based thermal simulations and calculation tools provide detailed forecasts — from the very start of the planning phase — on system performance, consumption, and expected return on investment, all based on real meteorological data.
Lima: A new level of smart system monitoring
With our proprietary monitoring and control software, forecasts become measurable. Thanks to advanced AI and machine learning algorithms, system performance can be automatically optimized in real time.
This ensures maximum efficiency with minimal energy use, at every moment.
Predictable performance: not estimates — detailed, data-driven calculations
Measurable, verifiable savings: with savings you can track in real time
Automatic optimization: so you can always be sure your system is operating at its best
Full overview: covering temperature, humidity, air quality, and water usage, all in one interface
RR Module
The RR Module — developed in collaboration with WEGER — is available as part of our Rooftop Retrofit program. It's a high-value combination of a custom-engineered air handling unit tailored to your system and Oxyma’s IDEC precooling technology.
Energy efficient
Up to 80% lower cooling energy demand compared to conventional systems
Cost effective
A more affordable alternative to traditional rooftop units
Comfort-Optimized
Delivers a stable and optimal indoor climate with a continuous supply of 100% fresh, filtered air
Silent
Thanks to the super-efficient EC fans, it guarantees silent operation
Low-impact
Uses water as a refrigerant instead of harmful substances
Hygienic
The system components are backed by several hygiene-related patents
01
AHU module
A tailor-made air handling unit fitted for your existing system and facility, with plug & play installation, manufactured in accordance with RLT guidelines, as well as DIN and VDI standards. Naturally, it complies with ERP Eco-Design guidelines and carries EuroVent certification.
HEATING OPTIONS
Chilled water coil
Heating from existing boiler, heat pump, or geothermal source
simple, reliable
low investment requirements
easy heat storage
requires an existing heat source and piping network
Electric coil
Compact, quick-to-install electric solution
compact and easy to control
low investment requirements
compatible with solar panel systems
higher consumption with significant electrical power demand
Air and heat pump connection
RR module as an “end-point” solution for existing heat pump systems
low operating and investment requirements
smart system monitoring (Lima)
heat storage options
space requirements and lack of redundancy in new systems
Open and closed gas burner
Retrofit option, for sites with easy access to gas lines
reliable solution for locations with limited capacity expansion options
without centralized heat source
somewhat outdated technology
Integrated air-to-water heat pump
Heating from existing boiler, heat pump, or geothermal source
low operating costs
smart system monitoring (Lima)
solar power compatibility
higher upfront costs
more complicated control
heat storage challenges and temperature fluctuations caused by defrost cycles
02
INTRCOOLL - IDEC Module
Air cooler utilizing the nature-inspired, award-winning, and patented two-stage adiabatic technology (SEER >15-30), which we integrate as a pre-cooler into the Weger AHU. This significantly enhances the energy efficiency of the solution and ensures stable operation, even during extreme heat.
AVAILABLE SIZES
In harmony with nature
Pure two-stage adiabatic operation isn’t entirely without compromise. The technology works in harmony with nature, which means its performance can be influenced to some extent by external environmental factors:
IN HUMID YEARS:
In about 3-4% of annual operating hours, supply air temperatures range between 21-23 °C.
IN DRY YEARS:
In about 1-2% of annual operating hours, supply air temperatures range between 21-23 °C.
Is there a solution?
With our proprietary Lima weather-responsive control — available as an add-on module — these periods can be seamlessly managed. Hybrid solutions are also available upon request.
Add-on modules
SunCooler
An innovative durable cover designed for industrial skylights, reflecting 65–70% of solar heat and radiant energy while allowing 65–70% of visible light to pass through, ensuring soft, diffused natural lighting indoors.
ROI <5 years
SAVINGS 5-15%
More information →
Lima
Smart interface for local PLCs, enabling data collection, monitoring, weather-based control, and AI-driven self-optimization and diagnostics. It also enhances our energy and thermal simulation calculator, delivering even more accurate performance and savings forecasts.
ROI <2 years
SAVINGS 15-20%
More information →
HydroBank
A proprietary all-in-one water management station that handles filtration, purification, and disinfection — as well as the utilization of alternative water sources — all within a single compact, intelligent unit.
ROI <3 years
SAVINGS 20-70%
More information →
Water as a refrigerant
Water is one of the most powerful and abundant refrigerants on our planet, and it has a high enthalpy of vaporization. In two-stage adiabatic systems, 95% of the cooling performance is derived from this evaporation, meaning that significant temperature reduction can be achieved with relatively small amounts of water.
Beyond its cooling capacity, it offers a range of additional benefits
No ozone depletion potential
Zero CO2 equivalent
Not poisonous
Non-explosive & non-flammable
No contribution to global warming or greenhouse effect
Re-enters the natural cycle through evaporation
Natural, F-gas free
Available both globally and locally, and fully recyclable
Cost-effective
What does this mean for your facility?
No HVAC regulatory permit required No need to hire a certified HVAC technician Exempt from mandatory leak inspections Eliminates the use of hazardous HFC and HFO refrigerants OVERALL, YOU’LL HAVE FEWER HEADACHES AND LOWER COSTS!
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