Compare the four systems

Specs only, no ranking. The four series do different jobs: the first table shows which jobs each one does, the second lists the published figures, and the four steps narrow it down before a survey.

Site survey · sizing · installation · maintenance, UAE-wide

What each system does

Read the rows, not the columns: the question is which jobs your space needs.

The four systems, by what each one does
What it doesSeries RRecirculating ductedSeries FFresh-air + heat recoverySeries HHigh-capacitySeries TFresh-air treatment
Removes moisture from the airYesYesYes, large loadsYes, the incoming air
Brings in outdoor airNo, recirculatesYesPer projectYes
Recovers energy from the exhaust airNoYesNoNo
Has its own exhaust pathNoYesPer projectYes
Filters the air it handlesYes, three stagesYes, three stagesYes, three stagesYes, three stages
Where the unit sitsCeiling voidCeiling void, near an outside wallPlant room or large voidCeiling void, near the intake
Typical spacesVillas, apartments with a working fresh-air supplySealed villas and apartments, hotel roomsWarehouses, hotels, pools, showroomsOffices, hotels, villas with high fresh-air demand
Often paired withSeries T or V for fresh airSeries R on large floorsExisting HVAC, after reviewSeries R for the recirculated air

Published figures, side by side

Each column is one datasheet at its stated test conditions. Rows without a published figure are marked, not guessed.

Published figures, side by side
PropertySeries RSeries FSeries HSeries T
Capacity (L/day at 30 °C / 80 % RH)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Airflow (m³/h)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
External static pressure (Pa)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Fresh-air supply / exhaust (m³/h)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Filtration stages and gradesPLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Noise (dB(A), distance and standard)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Power (W, V, Hz)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
RefrigerantPLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Dimensions (mm)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Weight (kg)PLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
ControlsPLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Duct spigotsPLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Condensate connectionPLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Operating rangePLACEHOLDERPLACEHOLDERPLACEHOLDERPLACEHOLDER
Heat-recovery efficiency (%)PLACEHOLDER

Four questions that narrow it down

The same questions our engineer asks on the first call.

  1. 01

    Is the space sealed or ventilated?

    A villa with a working fresh-air supply usually needs Series R to dry the air it already has. A sealed, double-glazed apartment or villa has no way to get fresh air in without letting humidity in, so Series F or Series T is the starting point.

    Cut-away illustration of an apartment with closed windows and a ducted dehumidifier above the corridor ceiling feeding each room
  2. 02

    How large is the moisture load?

    Occupancy, showers and kitchens, pools, loading doors and stored goods set the load, not the floor area. Homes and hotel rooms sit within Series R and F. Warehouses, pool halls, showrooms and server rooms move to Series H.

    Cut-away illustration of a warehouse with pallet racking, a floor-standing dehumidifier and long ducts under the roof
  3. 03

    Does the space need outdoor air?

    If fresh air is required for occupants or by code, choose between Series F (fresh air, exhaust and energy recovery in one unit) and Series T (fresh-air treatment with its own exhaust path, no heat-recovery core). Series V provides balanced ventilation without dehumidification.

    Illustration of a ceiling-void unit with ducts through the outside wall to intake and exhaust grilles, and dry air into the room
  4. 04

    Is the problem dust, not humidity?

    If readings are already in range but dust and allergens are the complaint, Series A at the AC return filters the whole return-air flow. Every dehumidifying system also carries three filter stages, so filtration is never an add-on.

    Illustration of a purifier cartridge fitted inside a section of rectangular air duct

Two units that complete the range

Series V is a balanced energy-recovery ventilator for new builds and renovations; it does not dehumidify and pairs with Series R. Series A is an electrostatic purifier at the AC return for dust and allergens, not humidity.

Questions about choosing

Short answers; the survey settles the rest.

Which system suits a villa?

Most villas with a working fresh-air supply start with Series R, one unit per zone or floor, sized to the moisture load. A sealed villa, or one where the owners want filtered fresh air, moves to Series F or a combination of Series R and Series T. The survey decides.

Which system suits a sealed high-rise apartment?

Double-glazed apartments trap moisture from showers, cooking and laundry and have no clean way to bring fresh air in. Series F brings in filtered, dried outdoor air, exhausts stale air and recovers energy from the exhaust. Where only humidity control is needed and ventilation exists, Series R is the simpler choice.

Can systems be combined?

Yes. A common pairing is Series R for the recirculated air with Series T or Series V for the fresh air, each on its own ducts. Large buildings often use several Series H units by zone. One controller per unit; integration with a building management system is reviewed per project.

Is there a system that only ventilates or only filters?

Yes. Series V ventilates with energy recovery and does not dehumidify. Series A filters the AC return air electrostatically and does not dehumidify. Both are listed under the four main systems.

Which system is the cheapest?

Prices are on request and quoted after a survey, so no system is ranked here. In general the installed cost rises with capacity, with the number of duct connections and with the length of the duct and drain runs.

All questions

Still between two systems? Ask.

Send the floor plan and a humidity reading if you have one. We reply with the system that fits.