Usually the heater is removed to replace the evaporator or to repair the heater.

Before carrying out the task, we discharge the air conditioning system, for this:

Removal and installation of the heater Renault Duster
We unscrew the threaded cap of either of the two service valves

The work must be carried out wearing protective goggles

Removal and installation of the heater Renault Duster
We carefully press with a thin long-bladed screwdriver on the tip of the valve core and release the refrigerant from the system.

The refrigerant must be released in the open air or in a well-ventilated room. The refrigerant must be released in a thin stream.

When releasing the refrigerant, some of the oil mixed with it may splash.

We drain the liquid from the engine cooling system (article – Checking and replacement of the engine coolant Renault Duster)

We remove the air intake with the resonator as an assembly

We remove the floor tunnel trim (article – Removal of the floor tunnel trim of the Renault Duster vehicle)

We remove the instrument panel (article – How to remove the instrument panel Renault Duster)

Removal and installation of the heater Renault Duster
In the vehicle cabin, with a Torx T-20 key, we unscrew two screws securing the mounting block
Removal and installation of the heater Renault Duster
We remove the fuse mounting block and leave it hanging on the wires
Removal and installation of the heater Renault Duster
With a 10 mm socket we unscrew two nuts
Removal and installation of the heater Renault Duster
We remove the earth wire terminals from the studs
Removal and installation of the heater Renault Duster
With side cutters we cut the clip securing the wiring harness to the crossmember
Removal and installation of the heater Renault Duster
Prising with a screwdriver, we remove the wiring harness holder from the steering column bracket
Removal and installation of the heater Renault Duster
Prising with a screwdriver, we remove two wiring harness holders from the crossmember.

We remove the crossmember bracket

Removal and installation of the heater Renault Duster
We remove the tailgate door window heating relay from the holder on the crossmember
Removal and installation of the heater Renault Duster
Pressing the wiring connector retainer, we disconnect the connector from the brake light switch
Removal and installation of the heater Renault Duster
Pressing the wiring connector retainer, we disconnect the connector from the clutch pedal position sensor
Removal and installation of the heater Renault Duster
Pressing the wiring connector retainer, we disconnect the connector from the connector of the accelerator pedal module
Removal and installation of the heater Renault Duster
With a 13 mm socket we unscrew four bolts securing the steering column
Removal and installation of the heater Renault Duster
We lower the steering column to the floor
Removal and installation of the heater Renault Duster
Pressing the wiring connector retainer, we disconnect the connectors of the heater blower wiring harness
Removal and installation of the heater Renault Duster
With a 10 mm socket we unscrew the nut
Removal and installation of the heater Renault Duster
We remove the earth wire terminal from the stud
Removal and installation of the heater Renault Duster
Having bent back the edge of the carpet, we take out the connectors of the wiring harnesses of the right front door from under it
Removal and installation of the heater Renault Duster
Having shifted the connector retainer (shown by the arrow), we disconnect the wiring connectors
Removal and installation of the heater Renault Duster
With a Torx T-20 key we unscrew the screw securing the air duct
Removal and installation of the heater Renault Duster
And we remove the left air duct
Removal and installation of the heater Renault Duster
We also remove the right air duct
Removal and installation of the heater Renault Duster
With a Torx T-20 key we unscrew two screws securing the heater to the crossmember

With a 13 mm socket we unscrew two bolts securing the crossmember on the left side.

Removal and installation of the heater Renault Duster
We unscrew two bolts securing the crossmember on the left side
Removal and installation of the heater Renault Duster
We also unscrew two bolts securing the crossmember on the right side
Removal and installation of the heater Renault Duster
We remove the crossmember
Removal and installation of the heater Renault Duster
In the engine compartment, with a 10 mm socket, we unscrew two bolts securing the air conditioning pipes to the expansion valve
Removal and installation of the heater Renault Duster
We disconnect the pipes from the expansion valve
Removal and installation of the heater Renault Duster
Having squeezed the ends of the clips with pliers, we shift the clips along the hoses
Removal and installation of the heater Renault Duster
We disconnect the supply and return hoses of the heater from the pipes of the heater radiator

We withdraw the heater from the vehicle cabin

We install the heater in the reverse order.