10 · Cooling coils

Cooling coils for air-handling units

Cooling coils for air-handling units Cooling coils · 10

AHU cooling coils take heat off outdoor air: chilled water or DX from a condensing unit. Aurum Prodest sizes the section, fits an eliminator and drain, and keeps condensate out of the duct and finished ceiling.

40 °C outdoor air without a coil stuffs an office even with splits — you cool the same hot air. An AHU coil unloads room units and keeps air-change hygiene. We size flow and ΔT and tie to a chiller or condensing unit.

  • Water / DX coil selection
  • Tie to chiller or CU
  • Eliminator and drain

By the numbers

12+
years on market
500+
projects delivered
50+
specialists
5yr
warranty

About the service

40 °C outdoor air without a coil stuffs an office even with splits — you cool the same hot air. An AHU coil unloads room units and keeps air-change hygiene. We size flow and ΔT and tie to a chiller or condensing unit.

Eliminator and drain are not optional. Skip them and you get wet ducts, mould, inspection trouble. Fall, trap, clean-out. Insulate the cold run after the coil against outer condensate.

DX: braze, vacuum, match the outdoor CU. Water: valves and balance with FCUs on the same chiller so the AHU does not steal the building’s cooling.

This is air treatment in the unit, not cooling one room. We do not sell a coil as a substitute for a shop split.

Commission supply temperature and no droplet carry-over. Service: coil wash, tray. Factory and workmanship by contract.

Brands

Coils and heat exchangers: sizing first, brand second. Pros/cons cover durability, hydraulics, and kit completeness.

A brief comparison by class and use case — we match equipment to budget and site

Swipe the table sideways →

Brand Class Pros Cons
Daikin Premium One ecosystem with manufacturer systems Costlier than universal coils
Güntner Premium Premium heat exchange for industrial loops High price and lead times
Alfa Laval Premium Precise plate HEX selection Premium budget per unit
Carrier Mid-range Clear ratings and familiar hydraulics Not always best efficiency/$
Systemair Mid-range Easy match to same-brand AHUs Narrower than pure heat specialists
Klingenburg Mid-range Rotary recovery for efficient AHUs Niche vs full HVAC brands

Specs and standards

Eliminator required
Drain fall, trap, clean-out
Water balance with FCUs
DX CU + vacuum
Insulation after the section
Not a substitute for a room split

What's included

  • 01 Water / DX coil selection
  • 02 Tie to chiller or CU
  • 03 Eliminator and drain
  • 04 Insulate cold runs
  • 05 Valves and hydraulic balance
  • 06 Supply-temperature set-up
  • 07 Coil wash
  • 08 Protect ceilings from condensate

How we work

  1. 01 Airflow and cooling source
  2. 02 Section type
  3. 03 Pipework and drain
  4. 04 Insulation
  5. 05 Summer start-up
  6. 06 Wash schedule

Advantages

Experienced specialists
Work warranty
Certified equipment
Same-day site visit
Transparent pricing
In-house production

FAQ

Why a coil if we have splits?

Untreated outdoor air is hot air into the room. Splits wear out. You often need both.

Why is the ceiling wet by the AHU?

No eliminator, drain or insulation. Find the node, not “a bad unit”.

Water or DX?

Chiller — water. No chiller — CU. We count power and service.

Add a section to an old AHU?

If space and board allow. Sometimes a new unit is cheaper.

Inspections?

Dry networks and filters help. A wet duct does the opposite.

Link to chillers?

Yes — a water coil is fed by that cooling.

Need a quote or installation? We reply within an hour on business days. Engineer visit and survey are free with a signed contract.