RD-3-7799-0 – Cover Assembly for Red Dot R-9800 Heater/Air Conditioner

Overview

The RD-3-7799-0 is the factory cover assembly used on Red Dot’s R-9800 heater/air conditioner. It mounts over the main housing and creates a clean, finished look while shielding critical components from debris and impact. When the original cover is cracked, missing, or badly corroded, this assembly restores both protection and appearance.

Key Features

• Genuine Red Dot service part for R-9800 series heater/A/C units

• Direct-fit replacement cover assembly (no universal adapting or drilling in most applications)

• Protects internal components such as the heater core, evaporator, and blower assembly

• Helps manage airflow through the unit for consistent heating and cooling performance

• Durable construction built for heavy-duty and off-highway environments

Compatibility

• Cover assembly for Red Dot R-9800 heater/air conditioner units

• Suitable for R-9800 systems used on off-highway equipment, vocational trucks, and other mobile HVAC applications

• Intended as a service replacement for OEM-installed R-9800 units (12V or 24V versions use the same cover assembly)

If you are unsure whether this cover assembly matches your unit, compare your model tag to the R-9800 series or reference the original part number stamped or labeled on the cover.

When to Replace

Replace your RD-3-7799-0 cover assembly if you notice:

• Cracks, breaks, or missing sections of the housing

• Loose, warped, or ill-fitting covers that no longer seal correctly

• Visible damage from impacts, corrosion, or UV exposure

• Excess debris entering the unit due to an open or broken cover

Running an R-9800 unit without a proper cover can lead to premature wear on the coil, blower, and electrical components, as well as reduced HVAC performance.

Typical Applications

The R-9800 heater/A/C system is widely used on:

• Construction and earthmoving equipment

• Agricultural and forestry machines

• Industrial and vocational trucks

• Other specialty vehicles needing compact, high-output HVAC

The RD-3-7799-0 cover assembly helps keep these units working hard in tough environments.