If your kitchen sink's hot handle is not working, the first thing you should check is the water supply. Make sure that the hot water supply to your kitchen is turned on and functioning properly. If there is no hot water supply, then that could be the reason why your hot handle is not working. You can check this by turning on the hot water supply from another faucet in your house and seeing if it is working. If not, then you may need to call a plumber to fix any issues with your hot water supply.Check the water supply
The next thing you should check is the faucet handle itself. Sometimes, the handle can become loose or damaged, making it difficult to turn and causing problems with the hot water flow. If this is the case, you can try tightening or replacing the handle to see if it resolves the issue. If the handle is in good condition and functioning properly, then you can move on to the next step.Check the faucet handle
Inside your kitchen sink's faucet, there is a cartridge that controls the flow of hot and cold water. Over time, this cartridge can become worn out or clogged, preventing the hot water from flowing properly. To check the cartridge, you will need to turn off the water supply to your kitchen sink and remove the handle and cartridge. Inspect the cartridge for any damage or debris and clean or replace it if necessary.Check the cartridge
The aerator is a small mesh screen located at the end of your faucet. Its purpose is to mix air with the water to create a smooth and steady flow. However, over time, the aerator can become clogged with mineral deposits or debris, affecting the hot water flow. You can remove the aerator and clean it with vinegar or replace it entirely to see if it improves the hot water flow.Check the aerator
The hot water valve is located under your sink and controls the flow of hot water to your faucet. If this valve is partially closed or blocked, it can affect the hot water flow. Make sure to check that the valve is fully open and not obstructed by any objects. If there is an issue with the valve, you may need to call a plumber to fix it.Check the hot water valve
If all other steps have been unsuccessful, then the issue may lie with your hot water heater. If your hot water heater is not functioning properly, it can affect the hot water flow to your kitchen sink. Check to see if there are any issues with your hot water heater, such as a malfunctioning heating element or a lack of hot water altogether. If necessary, call a professional to repair or replace your hot water heater.Check the hot water heater
The hot water line that runs from your hot water heater to your kitchen sink can also be a potential source of the problem. If there is a blockage or leak in the hot water line, it can affect the hot water flow to your faucet. You can visually inspect the hot water line for any damage or blockages and call a plumber to fix any issues that you find.Check the hot water line
In some cases, the hot water pressure may be too low, causing the hot water to trickle out of your kitchen sink. You can check the hot water pressure by using a pressure gauge or calling your water company to see if there are any issues with the water supply in your area. If the pressure is low, you can try adjusting the pressure regulator or calling a plumber for assistance.Check the hot water pressure
Another factor that may be affecting your hot water flow is the temperature of the water. If the temperature is too high, it can cause the hot water to evaporate before reaching your kitchen sink. You can check the temperature setting on your hot water heater and adjust it accordingly. Keep in mind that the ideal temperature for hot water is around 120 degrees Fahrenheit.Check the hot water temperature
Lastly, if none of the above steps have resolved the issue, then the problem may be with the hot water shut-off valve. This valve is usually located near the hot water heater and controls the flow of hot water to your entire house. If the valve is partially closed or malfunctioning, it can affect the hot water flow to your kitchen sink. You can check the valve and adjust it if necessary or call a plumber for assistance. In conclusion, if your kitchen sink's hot handle is not working, there are several potential causes that you can check and troubleshoot before calling a professional. By following these steps and identifying the root of the problem, you can get your hot water flowing again and avoid any further inconvenience in your daily life.Check the hot water shut-off valve