Webasto A4 BlueCool A-Series Compact Air Handler – 4,000 BTU – 230V

Description

The smallest air handler in Webasto’s A-Series lineup, the A4 delivers 4,000 BTU of cooling capacity for the tightest cabin spaces on a central chiller system. This smallest webasto air handler is sized specifically for heads, small berths, or other compact spaces that don’t need — or don’t have room for — a larger handler.

Starting with the right-sized handler for a small space matters more than it might seem: an oversized handler in a tiny cabin can overcool the room and cycle inefficiently, while the A4’s proportionally lower airflow and chilled water demand are matched to the actual volume of air it needs to move.

Key Features of the Webasto A4 Compact Air Handler

This compact cabin chilled water unit is the entry point into Webasto’s A-Series lineup, built with the same condensate management and construction quality as the larger handlers in the range.

• Innovative Instant Drain Condensate Management System handles condensate automatically
• High-quality stainless steel construction throughout
• Flexible vibration isolation mounts and larger ducts reduce operating noise
• Oversized heat exchanger tested specifically under tropical operating conditions
• Compatible with the Webasto MyTouch color touchscreen control display

Webasto A4 Technical Specifications

These figures come from Webasto’s official spec sheet for part number WBCL1209009A. Data on this listing is internally consistent, with no discrepancies found in the specification table — this is also the correct listing for the EHM600W module’s stated A4 compatibility, confirming that specific pairing is accurate.

• Cooling Capacity: 4,000 BTU/h
• Voltage / Frequency: 230V / 50-60 Hz
• Air Flow: 230 m³/h (135 CFM)
• Blower Connection: 4″ (100mm, oval)
• Current Draw Running: 0.6 A
• Chilled Water Connection: 3/4″
• Minimum Chilled Water Flow: 228 l/h
• Number of Condensate Drains: 2
• Condensate Drain Diameter: 16mm (0.63″)
• Number of Blowers: 1
• Dimensions (W x L x H): 9.8″ x 15.0″ x 11.3″
• Net Weight: 13.2 lbs

Why Choose the Webasto A4

This unit carries Webasto’s standard 2-year warranty, and its 0.6A current draw is minimal enough to add to almost any existing cabin circuit without concern. A cabin control kit is required for installation and sold separately.

What to Know Before Installing

• A Webasto A-Series Cabin Control Kit is required for installation — this listing is the air handler only
• This handler requires a matching Webasto chiller (C-Series, V-Series, or VX-Series) as the central cooling source
• Compatible with the Webasto MyTouch control display, sold separately
• Can be extended with the EHM600W electric heat module and flow control valve for independent cabin heating