# 21621754 Air Heater | Genuine Volvo Penta Part

🔧 Product Description

  

Genuine Volvo Penta 24V 10kW Hot-Water Air Heater, 55mm Outlets - Part Number: 21621754

  

A compact cabin air heater using hot engine coolant and a three-speed radial fan to deliver up to 10kW of heating output.

  

⚙️ Key Features

  

• Electrical system: 24V

• Heating output: 10kW

• Air outlet diameter: 55mm

• Free-flow air volume: approximately 550m³/h

• Stainless-steel casing with copper and brass heat exchanger

• Approximate dimensions: approximately 370 × 160 × 236mm

• Approximate weight: approximately 6.6kg

  

🔄 Supersession & Cross Reference

  

OEM Supersession Chain:

  

• 21621754 → Supersedes 41103332

  

OEM / Related Numbers:

  

• 21621754

• 41103332 - Earlier air-heater reference

• 21621721 - Coolant pipe set

• 21621971 - Related air outlet

  

Aftermarket / Verified Equivalents:

  

• No aftermarket equivalent

  

🚤 Compatibility

  

• Volvo Penta hot-water cabin-heating systems

• 24V vessel electrical system

• 16mm coolant connections

• Ducting sized for 55mm outlets

  

🔌 Function

  

Hot engine coolant passes through the heater core while the electric fan moves cabin air across the core and into the ventilation ducts.

  

Common signs of failure or damage:

  

• Fan not operating at one or more speeds

• Little or no cabin heat

• Coolant leakage from the heater core

• Air trapped in the coolant circuit

• Electrical connector or fan-motor overheating

• Restricted airflow from blocked ducts

  

📦 Condition

  

• Genuine Volvo Penta part

• Brand new

• Supplied in original or equivalent packaging

## Details

- **Price:** 1291.49 AUD
- **Vendor:** Volvo Penta
- **Tags:** Volvo Penta

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1291.49 AUD | In stock |

## Images

- 21621754 Air Heater | Genuine Volvo Penta Part

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/21621754-air-heater-genuine-volvo-penta)
> Updated: 2026-08-03