--- title: Girard GSWH-2, Hot water flow rate issue description: Troubleshooting poor flow rate on the GSWH-2 --- [Skip to content](https://support.austrv.com.au/girard/girard-gswh-2-hot-water-flow-rate-issue#main-content) English Show submenu for translations Address Open main navigation Close main navigation - English Show submenu for translations - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Girard Knowledge Base](https://support.austrv.com.au/girard?hsLang=en) 2. [Troubleshooting](https://support.austrv.com.au/girard/troubleshooting?hsLang=en) # Girard GSWH-2, Hot water flow rate issue As discussed the hot water flow is poor compared to the cold water flow. There are some things to check. I have attached a copy of the GSWH-2 technical  manual to this email, which may also help.   The **cold water inlet** has 2 components a knob to adjust the flow rate and also a filter just inside the inlet. Make sure the white knob is opened to allow flow and disconnect the water pipe to remove the filter, check for debris and clean if required. ![unnamed](https://support.austrv.com.au/hs-fs/hubfs/unnamed.png?width=613&height=329&name=unnamed.png)   ![unnamed-1](https://support.austrv.com.au/hs-fs/hubfs/unnamed-1.jpg?width=335&height=446&name=unnamed-1.jpg)   A **tempering valve** may be fitted (Pictured Below) - this will be located on the water pipe under the van after the kitchen sink before the shower**.** ADVISE IF FOUND! ![unnamed-1](https://support.austrv.com.au/hs-fs/hubfs/unnamed-1.png?width=329&height=439&name=unnamed-1.png)   **Also follow your plumbing lines from the hot water outlet, check for any questionable pipework tight turns or kinks. Feel free to supply photos that** **may help diagnose the issue.** - [Troubleshooting](https://support.austrv.com.au/girard/troubleshooting?hsLang=en) # Address [mailto:email@email.com](mailto:email@email.com) Copyright © 2026, Address