Parts for your 2020 Haval H6-Tx valve

2020 Haval H6 TX‑Valve: What it does and how to look after it

Referencing technical sources such as Haval/GWM dealer workshop information and OE parts catalogues for the 2017–2020 H6 platform, as well as common aftermarket listings that specify an A/C expansion (TX) valve for this model, confirms the 2020 Haval H6 is fitted with a thermostatic expansion valve mounted at the evaporator. So yes—this vehicle uses a TX‑valve.

The TX‑valve in a 2020 Haval H6 meters refrigerant into the evaporator based on temperature and pressure, keeping superheat in the sweet spot so the cabin stays cold without freezing the core. It balances performance at idle, in traffic, and on the open road, working with the compressor and condenser to deliver consistent, efficient cooling. Because it reacts to load and ambient changes, it helps the H6’s system deliver quick pull‑down on hot days while protecting the compressor from liquid slugging.

It’s not a scheduled service item, but good habits keep it happy. Always use the refrigerant type and charge weight on the under‑bonnet label. Run the A/C regularly (even in winter) to circulate oil and keep seals supple. Replace the cabin filter on time and keep the condenser clean so the valve isn’t fighting poor airflow. If the system has been opened, replace O‑rings and the receiver‑drier (often integrated with the condenser on late‑model vehicles) to control moisture that can corrode or ice up the TX‑valve.

Tell‑tale signs the H6’s TX‑valve may be crook include:

• Erratic or weak cooling, especially cycling between too cold and warm
• Frosting on the evaporator pipes/valve or hissing at the firewall
• Unusual high/low pressure readings or evaporator freeze warnings on scan

Replacement is a professional job. A licenced automotive A/C technician should recover the refrigerant, access the valve at the evaporator housing (often via glovebox/dash area), renew the valve and all O‑rings, torque fittings correctly, then evacuate and recharge by weight. Any contamination (e.g., after a compressor failure) calls for flushing lines where appropriate and replacing the drier. A leak check and performance test should follow. If the vehicle uses R1234yf, remember it’s mildly flammable, so correct equipment and procedures are a must. Done right, the new TX‑valve will restore stable vent temps and protect the compressor for the long haul.

For Aussie and Kiwi owners, sticking with ARCtick/MTA‑approved technicians and OE‑equivalent parts is the simplest way to keep the H6’s air‑con icy cold across our variable climates.

Popular questions about the 2020 Haval H6 TX‑valve

Where is the TX‑valve on a 2020 Haval H6?
It’s a block‑style valve mounted at the evaporator in the HVAC housing, with the A/C pipes passing through the firewall on the passenger side. Access typically requires removing the glovebox and trim, and in some cases partially loosening the HVAC case.

What symptoms point to a failing TX‑valve in an H6?
Common signs include poor or fluctuating cooling, icing on the evaporator pipes, audible hissing at the firewall, and abnormal gauge pressures. A workshop scan may show evaporator temperature faults. A proper diagnosis will rule out low charge, blocked condenser, or fan issues.

Should the receiver‑drier be replaced when changing the TX‑valve?
Yes. Whenever the system is opened, replace the receiver‑drier or the condenser assembly if the drier is integrated. This controls moisture and debris, helping the new TX‑valve and compressor last longer.