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AHU & Chilled Water System

AHU & Chilled Water System Philippines for Cleanrooms and Factories

We size the chiller, build the AHU around your room, install both, and hand over the test readings.
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Engineers and Specialists
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Principle of Operation

What an AHU & Chilled WaterSystem Works.

Cold is generated centrally at the chiller and delivered as filtered, conditioned air by each unit.

A chilled water system separates the production of cold from the handling of air.

The chiller, installed outdoors or in a plant room, rejects the heat picked up by a closed water circuit and returns supply water at roughly 5 to 15°C. Pumps carry it through the building to every air handling unit on the circuit. A single plant can therefore condition an entire facility, rather than a separate machine on each room.

The air handling unit does the rest. Room air and outdoor air are drawn across the chilled water coil, where the air gives up both heat and moisture and leaves cooled and dehumidified. Filtration follows in stages, standard particulate through to hospital grade HEPA. A modulating valve trims the water flow through the coil so that each zone holds its own temperature setpoint.

Blue map of the Philippines with location pins across Luzon and the Visayas joined by dotted service routes, plus an inset circle at the lower left showing part of Malaysia and Borneo with its own pin linked back by a dotted line, framed by faded photos of HVAC technicians in hard hats and safety vests taking airflow readings, reviewing drawings on a tablet, gauging a chilled water valve and servicing pipework beside a rooftop condenser bank.
About NuPON

We Handle Everything on thePhilippine Side.

We are an air handling unit distributor in the Philippines and a cleanroom contractor on the same projects.

Our units come from a manufacturing partner that has built industrial air conditioners and chillers since 2003, inside a group whose history runs back to 1972. The plant covers 150,000 m², holds 123 patents, and carries CE, UL, CCC, CNAS and ISO 9001, 14001 and 45001 certification. Every unit is built to order against the selection sheet we issue, so panel thickness, coil rows and filter train are settled before fabrication starts.

On this side the work is ours: survey, selection, installation, chilled water piping, balancing and the certified readings at handover. That scope sits under one purchase order and one point of accountability. We keep branches in Laguna, Manila, Cavite, Batangas, Subic, Clark, Cebu and Baguio, and the branch that surveys your site is the one that answers the service call after handover.

What We Do

Everything Between theSurvey and the Sign-Off.

One team handles the survey, the selection, the install, and the certificate, on one purchase order.

Survey and Load Calculation.

We come to site and measure room volume, process heat, fresh air need, and cleanliness class. These are the same seven inputs the quote form asks for, so nothing gets guessed twice.

Design and Selection.

Chiller capacity, chilled water temperature, coil rows, filter stages, and BMS points get chosen together. You receive a selection sheet with a budget before anyone orders steel.

Supply.

Units are built to order at a factory holding CE, UL and ISO 9001 certification. The selection sheet carries the build time for your configuration.

Installation and Piping.

Our crew sets the chiller, the AHU, the water loop, the ducts, and the controls. Every unit keeps at least a meter of service clearance, because someone has to change those filters later.

Testing and Validation.

Our own validation team records airflow, particle count, HEPA integrity, and room pressure, then certifies the readings. It is the same team that certifies cleanrooms for us nationwide.

The First Decision

Chilled Water or Direct Expansion?

The answer follows how many rooms share one plant, not the size of any single room.

Chilled Water AHU

One chiller feeds many AHUs. Part-load efficiency is strong, control is central, and you add a room by adding a unit. There is more to install, because the plant needs a water loop.

DX AHU

Refrigerant expands inside the coil and the unit pairs with an outdoor condensing unit. No water piping and fewer components. It suits standalone rooms and sites with no chiller plant.

Chilled Water AHU DX Coil AHU
Cooling medium Chilled water, separate chiller Refrigerant in the coil
Best fit Large buildings, part-load efficiency Small spaces, simpler demands
Piping Chilled water loop No water line, outdoor condensing unit
Management Central control, modular expansion Standalone, fewer components
Product Range

AHU & Chilled Water System Philippines,Sized for the Load.

Chillers cover 3 HP up to about 4,600 kW, and AHUs handle up to 80,000 m³/h.
Chilled water air handling unit — long grey sectional casing with hinged access doors, round inspection windows, a control box and a bank of valve actuators along the side.

Chilled Water AHU

up to 80,000 m³/h · EC or DC fans
Modular sections with EC or DC fans that cut fan energy 30 to 50%. Optional heat recovery captures 70 to 80% of exhaust energy.
For cleanrooms and large plants on a central chiller
DX coil air handling unit — large white sectional casing with access doors, inspection ports, a mounted control box and a louvred fresh air intake hood on the roof.

DX Coil AHU

four builds · no water loop
Standard, constant temperature and humidity, cleanroom AHU with sub-HEPA and flow equalization, and exhaust type.
For small and medium rooms and sites with no chiller plant
Combined modular air handling unit — white multi-section casing with filter, coil and fan modules, sight-glass access doors, gauges, valve connections and a side air intake louvre.

Combined Modular AHU

25, 35 or 50 mm panels
Mixing, filtration, cooling, heating, humidification and silencing sit in one cabinet. Panel thickness sets the air volume and pressure band.
For facilities that need every air treatment stage in one machine
Ceiling cassette fan coil unit — square white decorative face panel with a central return air grille, slim supply slots and a control display, shown above the exposed chassis and electrical box.

Fan Coil Units

five cabinet types
Cassette, ceiling, concealed, floor standing and cabinet types run on the same chilled water loop.
For offices, control rooms and zones that need their own setpoint
Chilled water precision air conditioning unit — tall stainless steel cabinet for data centre and clean room cooling, with a control panel, status indicator lights and a display.

Chilled Water Precision AC

runs on 5 to 7°C water
Close control cooling fed by the same chiller that serves the rest of the plant.
For server rooms, control rooms and equipment rooms
Modular air handling unit sized to a custom air volume by NuPON in the Philippines

Custom Capacity.

For capacities and builds outside the ten above
Tell us the load, the room and the cleanliness class, and we size a unit against it.
Request your Quote
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Custom capacities on request.
Modular air-Modular air-cooled scroll chiller — white cabinet on a black base frame with mesh-guarded dark blue condenser coils on two faces, exposed copper refrigerant pipework, orange-flanged water connections on the side and twin top-mounted axial fans.scroll chiller — grey cabinet with mesh-guarded blue condenser coils, visible copper refrigerant pipework and two top-mounted axial fans.

Air Cooled Scroll Chiller

3 to 200 HP
Modular, and no cooling tower needed.
For outdoor installation and sites short on water
Air-cooled screw chiller — long white steel frame with a row of blue-finned condenser coils and top-mounted fans, screw compressors and refrigerant piping exposed in the lower bay.

Air Cooled Screw Chiller

200 HP and up
Semi-hermetic screw compressor, with free cooling and heat recovery available.
For factories and process loads that run around the clock
Water-cooled scroll chiller — twin black shell-and-tube heat exchangers on steel support feet with flanged water connections at one end, topped by a grey control cabinet with a touchscreen HMI, indicator lights and an emergency stop

Water Cooled Scroll Chiller

3 to 50 HP · 4 to 25°C outlet
Below 0°C the same unit runs on glycol or brine.
For process cooling of molds, tanks and lab equipment
Water-cooled screw chiller — black shell-and-tube evaporator and screw compressor with insulated suction piping on a steel skid, with a beige control panel at one end.

Water Cooled Screw Chiller

about 230 to 4,600 kW
Twin screw, outlet at 5 to 15°C, with multi-step capacity control.
For large plants that already have a cooling tower
Modular air-cooled chiller — white cabinet with mesh-protected dark condenser coils on two faces and twin top-mounted axial fans on a black base frame.

Modular Chiller

52 to 133 kW per module
R410A, with cooling, heating and hot water up to 65°C.
For plants that grow in stages and service one module while the rest keep running
Modular chiller plant sized to a custom cooling load by NuPON in the Philippines

Custom Capacity.

For capacities and builds outside the ten above
Tell us the load, the room and the cleanliness class, and we size a unit against it.
Request your Quote
Your site Chiller type
Limited water supply Air cooled
Small or medium load Scroll compressor
Large capacity Screw compressor
Highest efficiency, cooling tower available Water cooled screw
Outdoor installation Air cooled
Process cooling below 0°C Water cooled scroll with glycol or brine
Cooling plus heating Air cooled heat pump or modular chiller
Request your Quote
Custom capacities on request.
Build and Specification

What Decides Whether the RoomHolds Its Class.

Casing leakage, the filter train, the coil and the control points, in that order.

25 / 35 / 50

mm panel thickness

80,000

m³/h max air volume

2,000 Pa

max total pressure

under 1.5%

casing leakage

3 HP to 4,600 kW

chiller range

CE · UL · CCC

plus CNAS and ISO 9001 / 14001 / 45001
Section through a modular air handling unit. Fresh air and return air enter the mixing dampers, pass the pre-filter and bag filter, the chilled water coil with its drain pan, the supply fan and the sub-HEPA stage, then leave as supply air. Chilled water enters the coil at 5 to 15°C and returns on the opposite side. A BMS sensor reads the supply air.

Representative section through a modular AHU, in the supplier’s own section order. Heating and humidification sections are added where the room needs them. Open a row to isolate that stage.

Casing

Double skin panels, ivory white color steel outside and galvanized steel inside. The high pressure polyurethane foam core comes in 25, 35 or 50 mm, and the thickness sets the capacity band. Casing leakage holds under 1.5%, against 3 to 5% on standard units.

25 mm panel less than 40,000 m³/h · less than 1,000 Pa
35 mm panel less than 80,000 m³/h · 1,000 to 1,400 Pa
50 mm panel more than 40,000 m³/h · less than 2,000 Pa

Filter stages run standard particulate through to hospital grade HEPA. Plate pre-filter, bag medium filter, pleated sub-HEPA and HEPA, and activated carbon are available. Inlet air velocity uniformity stays above 80%.

Copper tube with corrugated aluminum fins at 9 to 13 fins per inch. Water carryover stays under 0.4 g/kg of dry air. Stainless steel drain pan and end plates on request for wash-down rooms.

Fresh air mixing sized to your duct layout. Split blade dampers come with manual linkage standard and electric optional, and air valves are designed at 8 m/s.

Plate or rotary exchangers recover 70 to 80% of exhaust energy and cut cooling and heating loads 25 to 40%. Smart control and BMS integration improve part-load efficiency by 15 to 25%, meaning performance below full capacity. Specific fan power meets Eurovent Class A at 1.6 kW/m³/s or lower.

AHU panel thickness 25 / 35 / 50 mm
AHU air volume, 25 mm under 40,000 m³/h
AHU air volume, 35 mm under 80,000 m³/h
AHU air volume, 50 mm over 40,000 m³/h
AHU total pressure under 1,000 Pa at 25 mm · 1,000 to 1,400 Pa at 35 mm · under 2,000 Pa at 50 mm
Casing leakage under 1.5%, against 3 to 5% standard
Inlet air velocity uniformity above 80%
Coil fin density 9 to 13 fins per inch
Water carryover under 0.4 g/kg dry air
Air valve design velocity 8 m/s
Fan type EC / DC variable speed
Specific fan power Eurovent Class A, 1.6 kW/m³/s or lower
Heat recovery 70 to 80% of exhaust energy
Chilled water outlet, water cooled screw about 5 to 15°C
Chilled water outlet, water cooled scroll 4 to 25°C
Precision AC chilled water 5 to 7°C
Chiller range 3 HP to about 4,600 kW
Power supply 380V, 3 phase
Certifications CE, UL, CCC, CNAS, ISO 9001 / 14001 / 45001
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Applications

Two Jobs for OneChilled Water Plant.

Holding a cleanroom's particle count and cooling a factory floor pull on the same equipment differently.

Clean Air Supply

Filter stages run standard particulate through to hospital grade HEPA.

Covers

  • Cleanroom supply air
  • Make-up air pre-treatment
  • Room pressure control

Constant Conditions

The constant temperature and humidity build adds an electric heating section and a humidification section.

Covers

  • Constant temperature and humidity
  • Laboratory and metrology rooms

Hygienic Air

Stainless inner skin, stainless drain pan, and a smooth wash-down interior.

Covers

  • Hygienic AHU for pharma and food
  • Gas-phase filtration, activated carbon stage
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Plant and Workshop Air

Chilled water AHUs cool production halls, and reheat pulls moisture out of humid tropical workshops.

Covers

  • Workshop cooling
  • Dehumidification
  • Dust-heavy workshops
  • Fresh air and ventilation

Process and Equipment Cooling

Chillers feed plastic mold cooling, electroplating and electronics process loads.

Covers

  • Process chilled water
  • Electrical and control rooms
  • Server rooms and data rooms
  • Grain, food storage and greenhouse

Central Plant and Energy Recovery

One plant serves AHUs and fan coil units across a site, and recovers 70 to 80% of exhaust energy.

Covers

  • Central plant comfort cooling
  • Heat recovery
  • Free cooling, outdoor air at low ambient
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Sectors We Supply

Sectors That Run onChilled Water.

Sixteen sectors, split by the two jobs the plant is doing.
Cleanroom

Electronics and Semiconductor

Particle control, static safe humidity, and stable temperature on the line.
Cleanroom

Pharmaceutical and Biotech

Hygienic AHUs, HEPA supply, pressure cascades, and GMP documentation.
Cleanroom

Healthcare and Hospitals

Hospital grade HEPA supply air and humidity control in critical rooms.
Cleanroom

Food and Beverage Processing

Washable hygienic units, humidity control, and odor and gas filtration.
Cleanroom

Laboratories and Precision Manufacturing

Close control of temperature and humidity for metrology and testing.
Industrial

Chemical Processing

Process chilled water for reactors, with corrosion resistant options.
Industrial

Electrical and Power

Cooling for substations, E-houses, battery energy storage rooms, and control rooms.
Industrial

Metallurgy and Steel

Workshop cooling in high ambient heat, plus control room cooling.
Industrial

Plastics and Injection Molding

Chilled water to molds and hydraulics.
Industrial

Electroplating and Surface Treatment

Chilled water to plating tanks.
Industrial

Mechanical and Precision Machining

Stable workshop temperature for tolerance control.
Industrial

Glass and Rubber Manufacturing

Workshop cooling and dehumidification.
Industrial

Automotive Manufacturing

Air handling for paint and assembly areas.
Industrial

Data Centers and Telecom

Chilled water precision cooling for server and equipment rooms.
Industrial

Commercial Buildings

Hotels, hospitals, apartments, offices and schools on one central plant.
Industrial

Agriculture and Food Storage

Grain storage, food storage, mushroom cultivation, and greenhouses.
Common Questions

What Buyers AskBefore They Order.

The questions that come up on almost every survey call, answered by the engineers who take them.

Not answered here?

Send the floor plan and the cleanliness target. An engineer replies with a selection, not a brochure.
Speak with us →

A chilled water AHU cools air with water fed by a separate chiller. It holds part-load efficiency well and suits large buildings. A DX AHU evaporates refrigerant directly, needs no water loop, and pairs with an outdoor condensing unit. DX is compact and easier to install, so it fits small rooms and sites with no chiller plant.

Air cooled needs no cooling tower, so it suits outdoor placement and sites where water is short. Water cooled units reach higher efficiency on large loads when a cooling tower is already there. The water cooled screw range runs about 230 to 4,600 kW.

Scroll covers 3 to 200 HP air cooled and 3 to 50 HP water cooled, with good efficiency at part load. The water cooled screw range runs about 230 to 4,600 kW on a twin screw compressor with multi-level energy regulation. Pick screw for large continuous loads such as factories and data centers.

Yes. Filter stages run standard particulate through to hospital grade HEPA, and casing leakage stays under 1.5% against 3 to 5% on standard units. Terminal HEPA filters or fan filter units at the ceiling finish the room, and we test particle count at handover.

Our manufacturing partner rates EC and DC fans at 30 to 50% fan energy savings against conventional AC fans. Optional heat recovery captures 70 to 80% of exhaust energy and cuts cooling and heating loads 25 to 40%. Your real number depends on runtime, fresh air ratio, and setpoints.

Build time depends on the configuration. A standard unit is quicker than a stainless interior or a special filter train. We confirm the date on the selection sheet before you release the order, and installation time depends on site readiness, piping runs, and power availability, which we check during the survey.

We do both, so you are not dealing with an air handling unit supplier in the Philippines on one side and a contractor on the other. We handle survey, selection, installation, chilled water piping, ducting, and balancing. At handover we certify airflow, particle count, HEPA integrity, and room pressure, the same validation service we run on cleanrooms nationwide.

Yes. Our eight branches cover maintenance, filter replacement, coil cleaning, and repair. Major faults are escalated to the factory through us, so you deal with one party throughout.

Floor plan, room size, process heat load, target temperature and humidity, cleanliness class, fresh air need, and available power and water. With those seven, our engineers return a chiller and AHU selection with capacity, water temperature, filter stages, and a budget.

It depends on dust load, runtime, and the filter stage. Our branches schedule filter replacement and coil cleaning under after-sales service. Ask your nearest branch for the schedule that matches your filter train.

Get a Selection Sheet

Tell UsAbout the Room.

Send the floor plan, the heat load, and the cleanliness target, and we come back with a selection.

The selection sheet lists chiller capacity, chilled water temperature, AHU sections, filter stages, and installation scope, with a budget against each.

If it is easier to talk it through, call the branch nearest your plant.

  • Santa Rosa, Laguna (HQ)
  • Cavite
  • Subic
  • Cebu
  • Manila
  • Batangas
  • Clark
  • Baguio
  • Malaysia

Request an AHU & Chilled Water System Quote

Tell us about your room, your process, and your cleanliness target. Attach the floor plan and heat load if you have them. We reply with a system selection and a budget.