
Swegon CASA R4-C Genius
Swegon CASA R4-C · Residential ERV · Thailand
CASA R4-C
Sorption humidity recovery
Low-profile whole-home ventilation for homes and apartments where ceiling height or plant-space depth is limited, with Sorption humidity recovery and CASA Genius controls.
Engineered for Thailand
Sorption ventilation where installation height is limited
CASA R4-C Sorption combines balanced fresh air, energy and moisture recovery and intelligent controls in a low-profile format. Ventpro can integrate it into a suspended-ceiling, wall or floor concept and design the complete air path around the home.
Airflow range
20–92 L/s
Air volume
72–331 m³/h
Duct connections
4 × Ø160 mm
Format
Low-profile / ceiling
Final unit selection is based on design airflow, external pressure, duct layout, occupancy and the exact Thailand product configuration.
Why CASA R4-C
Whole-home ventilation for low-profile installations
CASA R4-C is a useful option when the project needs a compact ceiling-oriented format without giving up balanced ventilation, filtration, Sorption humidity recovery and smart controls.
The Thailand advantage
Moisture Management with CASA R4-C Sorption
Thailand’s fresh air is also humid air. CASA R4-C Sorption transfers both energy and moisture between the extract air and the incoming fresh air, helping reduce the humidity load before the air enters the home.
Humidity recovery can reach up to 80% . During hot and humid conditions, this helps keep indoor humidity more stable, reduces the load on the air-conditioning system and supports a cleaner, more comfortable indoor environment.
Sorption is the first stage of humidity control . If the home needs lower supply-air temperature or tighter RH control, Ventpro can add Comfort Cooling / active dehumidification after the CASA unit.
Up to 80%
Humidity recovery with CASA Sorption.
≈15–20%
Lower summer indoor humidity under suitable operating conditions.
Less load
Less moisture for the active cooling system to remove.
Performance varies with outdoor conditions, airflow, building characteristics and system operation.
Thailand moisture management
How Sorption stabilises indoor humidity

What the graph shows: the Sorption rotor keeps the indoor humidity curve substantially lower and more stable through the hot and rainy seasons.
Product overview
CASA R4-C at a glance
CASA R4-C is the central ventilation unit in a complete Ventpro residential system. It supplies fresh filtered air, extracts stale air, recovers energy and moisture with Sorption, and uses CASA Genius controls to keep ventilation running automatically.
Best for
Homes, apartments and similar spaces where a low-profile ceiling, wall or floor installation is preferred.
Fresh air
Balanced supply to bedrooms and living areas, with extract from bathrooms and utility spaces.
Humidity
Sorption recovers energy and moisture before the fresh air enters the home.
Smart control
CASA Genius can adjust ventilation automatically using the selected control and sensor package.
Extra comfort
Comfort Cooling can be added when the home needs additional cooling or tighter humidity control.
Part of a complete Ventpro residential system
CASA R4-C is the ventilation unit. Ventpro designs the complete system around the home, including filtration, ductwork, silencers, terminals, controls, commissioning and — when required — Comfort Cooling or advanced filtration.
Technical data
Key selection information
The main selection data is shown below. Full performance curves, dimensions and engineering documents are available from the official Swegon product source.
Selection: Floor area (homes / apartments under 170 m²) is a reference only. Final selection uses design airflow, external pressure, duct resistance, occupancy and system configuration.
Accessories
CASA R4-C controls & accessories
Key controls and accessories for CASA R4-C, with the complete current product list available from the official Swegon source.
Certificates
CASA R4-C certificates & environmental documentation
Key published certificates and environmental documentation. The Swegon product page remains the source for the current market-specific records.
EPD
Environmental Product Declaration information is available for the CASA product family.
OF CONFORMITY
Declaration of conformity
Current conformity and product-quality documents are available from the official Swegon source.
QUALITY
Quality documentation
Use the Swegon product page for the current quality and market-specific certification records.
Documents
CASA R4-C technical documents
Open the main product literature from the official Swegon source. For the complete and latest document library, use the Swegon product page below.
Technical catalogue · PDF · 6.7 MB
Swegon CASA R4-C Technical Data Sheet
Detailed product and selection information for CASA R4-C.
Brochure · PDF · 7.51 MB
Swegon CASA R-Series Brochure
Overview of the CASA R-series, controls and residential ventilation functions.
IOM manual · PDF · 2.42 MB
Swegon CASA R4-C Installation & Commissioning
Installation, operation and commissioning information for CASA R4-C.
Additional document
Type
Open
Document titles follow Swegon’s current product listings. Swegon remains the source for the latest revisions, file sizes and additional engineering, quality or accessory documents.
Looking for every current CASA R4-C document? Open the official Swegon product page for the complete document list.
Compare the CASA range
Need a different airflow or installation format?
R4-C is one part of the CASA family. Ventpro can move up or down in airflow, or use the horizontal H-format where the plant-space layout requires it.
CASA R4-C FAQ
Common questions about CASA R4-C in Thailand
Why is CASA R4-C Sorption relevant for Thailand?
Does CASA R4-C replace the home’s air conditioning?
How is the correct CASA R4-C airflow selected?
Can CASA R4-C help during PM2.5 season?
Is CASA R4-C the right model for your home?
Send Ventpro your floor plan and project information. We can confirm the airflow, compare CASA models and prepare the complete ventilation concept.
