A grill is only useful when it’s easy to regulate the grilling temperature.
If this does not happen, you are going to be confused as to how to get more out of the Weber grill. It is common for people to not see good results during their grilling sessions because the grill won’t heat as well as it needs to.
This creates a situation where the Weber grill is not heating past 300.
if the Weber grill is not heating past 300, this means the propane tank connection is loose or the regulator hose is damaged. It’s also recommended to ensure the gas line is properly intact and the burners are not set to a lower setting.
It is possible you have the burners set to low and that is going to create a situation where the Weber grill is not getting as hot as it needs to be.
Look at this guide to find out what you need to do if the Weber grill is not heating past 300.
Table of Contents
How To Fix Weber Grill Not Heating Past 300
1. Re-Check The Propane Tank Connection
If the propane tank connection is not good, you are going to want to be aware of this right away.
A common issue people report is when the propane tank is loose. This means the propane is not flowing into the Weber grill as you want it to.
This might not seem like an issue at first but it will be when you want to crank up the heat. It is going to stay warm but not enough for a good grilling session.
Your best option to increase the heat in the Weber grill is to re-check the propane tank connection. The goal is to ensure there is enough propane going into the Weber grill for it to stay hot.
The grill is not going to work as well as you want it to when the propane tank connection is loose. This is what you are going to want to think about as you dig into this more.

2. Inspect The Regulator Hose For Damage
You will also want to inspect the regulator hose in the Weber grill.
This hose is key in making sure things are flowing as required. If not, the regulator hose is going to become the main pain point for the Weber grill not staying hot.
You have to take the time to inspect it for damage.
It might be cracked or the connection point might be too loose. This means you are going to have to tighten the regulator hose and then ensure it is working as intended.
Focus on this to make sure the regulator hose is working and you are getting things to turn out as you want them to.
3. Ensure The Gas Is Turned On
You will want to take a look at whether or not the gas is turned on.
This creates a problem for those who are trying to get more out of the Weber grill. if you are not taking the time to do this, you are not going to get the gas to flow properly.
The best option is to make sure the gas is turned on and it continues to work as needed.
If the gas is now flowing in, you are not going to get things to function properly. This does happen and it’s best to take the time to inspect each part of the line to see where the problem might be.

4. Adjust The Burners
This is a potential issue that you might be facing when the Weber grill is not going past 300.
In general, the burners are going to have a specific setting that you are going to want to control. Some people forget about this and only look at the main connection point.
If the burner is set too low, this is going to become a problem.
There is not enough going through to the burner for it to stay hot. As a result, you are going to want to adjust the burners for the Weber grill to get it to stay hot.
Final Thoughts
It’s best to look at these steps when it comes to a Weber grill not heating past 300.
If the Weber grill is not heating past 300, start by checking to see if the burners are set to “Low” and need to be adjusted. Next, inspect the propane tank connection and ensure the regulator hose is not damaged. In some cases, the gas won’t be flowing through and that will need to be corrected.
You have to start with the burners because that is often the main issue. If you manually change the burner’s setting, this will be more than enough to get the grill to go past 300.