Parts for your 2022 Honda Cr-v-Tx valve

2022 Honda CR‑V TX‑Valve: What it does and when to service it

Technical sources including Honda’s Service Information for the RW/RG series (2017–2022) HVAC section, plus OEM and aftermarket parts catalogues such as the Honda eStore, Denso A/C application data and Four Seasons listings, confirm the 2022 Honda CR‑V is fitted with a thermostatic expansion valve (TX‑valve) at the evaporator inlet. So yes, a TX‑valve is relevant and used on this model.

On the 2022 CR‑V, the TX‑valve meters refrigerant into the evaporator based on superheat, keeping the cabin cool without flooding the core or starving it. It works hand‑in‑glove with the variable‑displacement compressor to stabilise vent temps, boost performance at idle, and protect the system from liquid slugging. When the valve is healthy, owners get quick pull‑down on hot days, steady temperatures, and a compressor that doesn’t hunt.

It’s not a routine “replace every service” item, but it does deserve attention whenever the A/C is opened or performance drops. Common clues a TX‑valve is on the way out include:

• Weak cooling at idle, then suddenly cold on the move
• Frosting on the evaporator or lines, or a rapid hiss/whistle at the dash
• Pressure readings that swing or don’t respond as expected during diagnosis

If the system’s been contaminated (e.g., after a compressor failure), the CR‑V’s TX‑valve can trap debris and stick. In those cases, replacement is considered best practice alongside flushing, replacing the receiver/drier or desiccant pack, and charging to the precise weight on the under‑bonnet label (many late CR‑V models specify R‑1234yf, but always check the sticker).

Replacement on the CR‑V typically involves accessing the HVAC case from the passenger side, removing the old block‑style valve and O‑rings, and installing new OEM‑spec parts. Good practice includes:

• Recovering refrigerant and recharging only with ARCtick‑licensed equipment in Australia, follow equivalent compliance in New Zealand
• Using new, correct‑size O‑rings lubricated with the specified oil for the refrigerant in the car
• Tightening fasteners to Honda’s spec and performing a nitrogen leak test and deep vacuum before recharge

For long A/C life, keep the cabin filter fresh, clear the condenser of road grime, and run the air‑con for a few minutes each week to circulate oil through the TX‑valve and compressor. When the TX‑valve on a 2022 CR‑V is set up right, the system cools quickly, stays consistent, and treats the compressor kindly.

• Where is the TX‑valve on a 2022 CR‑V?
  It’s mounted at the evaporator inlet inside the HVAC case, typically accessed from the passenger side behind the dash. Lines pass through the firewall to the engine bay, the valve itself is on the cabin side.
• Does the 2022 CR‑V use R‑1234yf or R‑134a?
  It depends on market and build. Many late‑model CR‑Vs use R‑1234yf, but some markets kept R‑134a. Always follow the refrigerant type and charge weight on the under‑bonnet label.
• Is it safe to keep driving with a dodgy TX‑valve?
  They might still get some cooling, but performance will be off and the compressor can be put at risk. Best to have it diagnosed and sorted before it causes bigger damage.