Modernize your air handling unit without replacement

Modernize your air handling unit for higher energy efficiency and improved performance — without demolition, crane lifting or costly equipment replacement.
Free consultation

Is your AHU outdated and too expensive to replace?

In industrial and commercial facilities, most air handling units (AHUs) have become outdated. They operate inefficiently and create a wide range of challenges for facility operators:
High energy consumption and
increasing operating costs
Significant efficiency loss during extreme heat and peak load conditions
Noisy, dusty operation with
outdated hygiene standards
Obsolete control systems with limited controllability and automation
Use of environmentally harmful refrigerants, creating compliance issues with the EU F-Gas Regulation and other environmental requirements
Significant wear after 15 years,
requiring frequent maintenance

AHU Retrofit:
Unlock the full potential
of your air handling unit!

The Oxyma AHU Retrofit Program offers a unique alternative to complete AHU replacement. Through comprehensive energy, hygiene, automation and aesthetic modernization, existing systems can be upgraded with minimal demolition work, no crane lifting and significantly reduced downtime risks.
Explore our retrofit programs →
AHU Retrofit

Key benefits

Energy efficient
Fast return on investment
Minimal structural intervention
Modular and scalable

Keep your AHU.
Upgrade its performance.

Modernization

Minimal intervention. Maximum compatibility.

The retrofit requires no major structural modifications. Our solutions integrate seamlessly into your existing AHU while maintaining the original airflow and external static pressure requirements.

Dramatic improvement in efficiency

The result is a future-ready air handling unit that delivers significantly better performance in terms of energy efficiency, system controllability, hygiene, operational reliability, and indoor comfort.

Beyond component replacement.
Complete Modernization.

The AHU Retrofit Program goes far beyond replacing individual components or carrying out repairs. Every project begins with a detailed assessment of the existing AHU and identification of all potential upgrade opportunities. Based on this evaluation, we develop a customized modernization package tailored to your operational requirements, complemented by engineering consultancy and long-term aftercare services.
Tanácsadás

Comprehensive energy and tax consultancy

  • Weather-based energy and thermal performance calculations and simulations
  • Detailed on-site pre- and post-audits
  • EKR / TAO / HEM consultancy and energy certification (upon request)
  • Environmental tax incentive administration (upon request)

Comprehensive design services

  • Mechanical, automation and electrical engineering design
  • Optimized, application-specific solutions for your existing air handling unit
Szakági tervezés

Modular system solution

  • Tailor-made AHU refurbishment programs
  • Scalable upgrade packages that can be implemented over multiple years
  • Hardware and software modernization from a single supplier
  • Our recommended best-selling retrofit packages

Ongoing professional support

  • Lifetime performance monitoring, continuous operation support, remote monitoring and service
  • Measurable and optimized energy savings
  • Performance guarantee and full project accountability
  • Identifying grant opportunities and green financing options
  • Long-term rental options
  • PPA, ESCO financing

AHU Retrofit
packages

CORE

package
Core modernization including controls, high-efficiency ventilation and filtration.
Package includes
LIMA
HUPX and weather-based intelligent AHU control with ML functions.
EC Fan + Electrostatic filtration
High-efficiency EC fan upgrade combined with optimized filter pressure management.

BOOST

package
Core modernization with enhanced thermal performance.
Package includes
CORE package
Everything included in the CORE package
EnerCo
Epoxy-graphite coating for heat exchangers and heat recovery systems.

BALANCE

package
Humidification, post-cooling and hygiene improvements.
Package includes
BOOST package
Everything included in the BOOST package
Oxyma WMH
Evaporative media humidification and adiabatic post-cooling.
Aesthetic improvements
Interior and exterior cleaning, epoxy coating

PERFORMANCE

package
Maximum thermal optimization for peak system performance.
Package includes
BALANCE package
Everything included in the BALANCE package
HydroMX
Energy-efficient nanofluid additive for closed-loop heating and cooling systems.
Aesthetic improvements
Interior and exterior cleaning
epoxy coating
Heat exchanger cleaning
Acid and alkaline cleaning
AHU Retrofit

AHU Retrofit
portfolio

In addition to our standard retrofit packages, every modernization solution is also available as an individual upgrade module. This allows you to improve the performance of your air handling unit exactly where it delivers the greatest benefit.
More information
Payback period <2 év
Energy savings 15-20%

LIMA

HUPX and weather-based intelligent control with ML functions.
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.
Learn more →
LimaLima logo
Ventilation
Heating
Cooling
Humidification
Aesthetics
Cleaning
All

Ventilation energy savings

ROI <3 years
SAVINGS 20-40%

Supply and exhaust side efficiency boost with EC fan technology

Boosting air handling unit efficiency with electrically driven fan walls. Thanks to stepless EC motor control, the system consistently delivers exactly the required output, with quiet, maintenance-free operation.
ROI <3 years
SAVINGS 15-25%

Pressure-optimized filters and electrostatic filters

Efficient electrostatic filtration with modular units for integration into air handling systems. Captures over 98% of fine particles while sterilizing the air. Its exceptionally low pressure drop enables more energy-efficient fan operation. No need for filter replacement, only occasional cleaning of the aluminum fins is required.

Improved heating efficiency

ROI <3 years
SAVINGS 10-20%

EnerCo graphite
- epoxy heat exchanger coating

Ultrathin graphene-based carbon-polymer coating designed to boost the performance of industrial air handling and HVAC systems. It protects condenser coil surfaces from corrosion, UV exposure, and chemicals, while improving heat transfer and extending system lifespan.
ROI <3 years
SAVINGS 20-35%

Hydromx heat transfer nanofluid

A specialized Nano-Thermo technology fluid designed to dramatically improve the performance of closed-loop cooling and heating systems. It also protects against corrosion, scaling, bacteria, freezing, and cracking.
ROI <3 years
SAVINGS 15-25%

HeatTank phase-change thermal storage

A revolutionary, compact thermal battery that uses phase-change materials to store heat at application-specific temperatures, with high energy density and minimal heat loss.

Cooling efficiency improvement

ROI <3 years
SAVINGS 20-30%

AfterCooll post-cooling for air handling units

Adiabatic post-cooling technology retrofit for existing liquid chillers, designed to improve cooling capacity, reduce energy consumption and maintenance requirements, and extend system lifetime. Modular, easy-to-install evaporative media ensure consistently optimal microclimate conditions.
a hűtési teljesítmény javítása,
az energiafogyasztás és karbantartás csökkentése, valamint a rendszerélettartam növelése érdekében. Moduláris, könnyen telepíthető párologtató betétekkel a mindig optimális mikroklímáért.
ROI <4 years
SAVINGS 20-30%

PreCooll adiabatic heat recovery precooling integrated into the exhaust air stream

Adiabatic precooling installed in the exhaust air stream of existing air handling units, enhancing performance, reducing energy use and maintenance, and extending system lifespan. The heat recovery module captures thermal energy from the extracted air and uses it to preheat the incoming fresh air.
ROI <5 years
SAVINGS 40-70%

IntrCooll precooling for air handling units

Two-stage adiabatic precooling technology installed on the intake side of existing air handling units. It can serve as the primary cooling method for AHUs without cooling, or as a hybrid solution for units with existing cooling functions. Multiple units can be connected to a single air handling system.

Humidification efficiency improvement

ROI <3 years
SAVINGS 40-60%

Oxyma WMH
evaporative media humidification

Our proprietary modular humidification wall systems use the natural power of water evaporation in a compact, space-efficient design. A highly efficient, multi-purpose alternative to energy-intensive thermal or steam-based humidification systems.

Aesthetics

Lifetime >10 years
Hygienic solutions

Internal epoxy flooring and wall coating


Lifetime >8 years
5-year warranty

External AHU panel powder coating


Lifetime >5 years
3-year warranty

Damper and damper actuator replacement


Lifetime >3 years
5-year warranty

Hinges, handles and panel seal replacement


Cleaning

Lifetime >2 years
With photo documentation

External and internal cleaning of air handling units


Lifetime >2 years
With photo documentation

External and internal cleaning of air duct systems


AHU Retrofit szolgáltatásaink

ROI <3 years
SAVINGS 20-40%

Supply and exhaust side efficiency boost with EC fan technology

Boosting air handling unit efficiency with electrically driven fan walls. Thanks to stepless EC motor control, the system consistently delivers exactly the required output, with quiet, maintenance-free operation.
ROI <3 years
SAVINGS 15-25%

Pressure-optimized filters and electrostatic filters

Efficient electrostatic filtration with modular units for integration into air handling systems. Captures over 98% of fine particles while sterilizing the air. Its exceptionally low pressure drop enables more energy-efficient fan operation. No need for filter replacement, only occasional cleaning of the aluminum fins is required.
ROI <3 years
SAVINGS 10-20%

EnerCo graphite
- epoxy heat exchanger coating

Ultrathin graphene-based carbon-polymer coating designed to boost the performance of industrial air handling and HVAC systems. It protects condenser coil surfaces from corrosion, UV exposure, and chemicals, while improving heat transfer and extending system lifespan.
ROI <3 years
SAVINGS 20-35%

Hydromx heat transfer nanofluid

A specialized Nano-Thermo technology fluid designed to dramatically improve the performance of closed-loop cooling and heating systems. It also protects against corrosion, scaling, bacteria, freezing, and cracking.
ROI <3 years
SAVINGS 15-25%

HeatTank phase-change thermal storage

A revolutionary, compact thermal battery that uses phase-change materials to store heat at application-specific temperatures, with high energy density and minimal heat loss.
ROI <3 years
SAVINGS 20-30%

AfterCooll post-cooling for air handling units

Adiabatic post-cooling technology retrofit for existing liquid chillers, designed to improve cooling capacity, reduce energy consumption and maintenance requirements, and extend system lifetime. Modular, easy-to-install evaporative media ensure consistently optimal microclimate conditions.
a hűtési teljesítmény javítása,
az energiafogyasztás és karbantartás csökkentése, valamint a rendszerélettartam növelése érdekében. Moduláris, könnyen telepíthető párologtató betétekkel a mindig optimális mikroklímáért.
ROI <4 years
SAVINGS 20-30%

PreCooll adiabatic heat recovery precooling integrated into the exhaust air stream

Adiabatic precooling installed in the exhaust air stream of existing air handling units, enhancing performance, reducing energy use and maintenance, and extending system lifespan. The heat recovery module captures thermal energy from the extracted air and uses it to preheat the incoming fresh air.
ROI <5 years
SAVINGS 40-70%

IntrCooll precooling for air handling units

Two-stage adiabatic precooling technology installed on the intake side of existing air handling units. It can serve as the primary cooling method for AHUs without cooling, or as a hybrid solution for units with existing cooling functions. Multiple units can be connected to a single air handling system.
ROI <3 years
SAVINGS 40-60%

Oxyma WMH
evaporative media humidification

Our proprietary modular humidification wall systems use the natural power of water evaporation in a compact, space-efficient design. A highly efficient, multi-purpose alternative to energy-intensive thermal or steam-based humidification systems.
Lifetime >10 years
Hygienic solutions

Internal epoxy flooring and wall coating


Lifetime >8 years
5-year warranty

External AHU panel powder coating


Lifetime >5 years
3-year warranty

Damper and damper actuator replacement


Lifetime >3 years
5-year warranty

Hinges, handles and panel seal replacement


Lifetime >2 years
With photo documentation

External and internal cleaning of air handling units


Lifetime >2 years
With photo documentation

External and internal cleaning of air duct systems


Innovation – through both our technologies
and our process

AHU Retrofit in practice

Modernization / 2024

United Caps

Enhancing liquid cooling system performance through a comprehensive modernization programme
Modernization / 2024

Michelin Hungária

Optimized processes and a more comfortable workplace with a tailor-made climate control system

Looking for a more efficient AHU?

Contact our experts and we'll help you find the optimal,
cost-effective modernization solution for your facility.
oxyma_tama
oxyma_toyo
oxyma_samsung
oxyma_mercedes
oxyma_pauker
oxyma_jabil
oxyma_thyssenkrupp
oxyma_filtrona
oxyma_otpbank
oxyma_cewe
oxyma_flex
oxyma_interplex
oxyma_lidl
oxyma_alkotas
oxyma_westend
oxyma_rafi
oxyma_harman
oxyma_folplast
oxyma_foxconn
oxyma_bosch
chevron-left
chevron-right

Contact us

oxyma@oxyma.hu
General questions: +36 (46) 999-689
Műszaki kérdések: +36 (30) 152-5080
1155. Budapest, Taksony sor 27.
Prior arrangement by telephone

3433 Nyékládháza, Ady Endre u. 49/A
Opening hours: 8:30-17:00

Follow us

Subscribe to our newsletter
Hungarotherm NagydíjEnvirontech nagydíjMagyar Brands 4xMagyar klíma és innovációKlenen'26Év Épületgépész Gyártója 2025
Ask our team.
crossmenu