Installing a Gas Wall Heater: The Ultimate Step-by-Step Tutorial.

Installing a gas wall heater involves a few simple steps: finding the right spot for the heater, ensuring proper ventilation, and connecting the gas and electrical connections. In this guide, we’ll walk you through each step to help you safely and efficiently install your new gas wall heater.

Gas wall heaters can provide a cost-effective and efficient heating option for your home, but proper installation is key to ensure safe and long-lasting use. Whether you’re replacing an old wall heater or installing a new one, it’s important to take the time to do it right.

In this step-by-step guide, we’ll give you all the information you need to install your gas wall heater with confidence. So, let’s get started!

Installing a Gas Wall Heater: The Ultimate Step-by-Step Tutorial.


Pre-Installation Preparations

Safety Precautions And Guidelines

Before diving into the process of installing a gas wall heater, it’s essential to prioritize safety above everything else. Here are some safety precautions and guidelines that you should keep in mind:

  • Always turn off the gas supply before beginning any work on the gas wall heater.
  • Ensure that the workspace is well-ventilated as gas wall heaters produce fumes.
  • Keep flammable substances such as cleaning products, aerosols, and gasoline, far away from the workspace.
  • Avoid wearing loose clothing and jewelry that could get caught in the components of the gas wall heater.

Choosing The Right Location

When it comes to choosing the perfect location to install your gas wall heater, there are several factors to consider. Here are a few things to keep in mind:

  • A correctly chosen location should be near a gas supply and a power outlet.
  • Avoid placing the gas wall heater in an area where there are flammable substances or any combustible items such as furniture or curtains.
  • The heater should be away from any electronic appliance that generates electromagnetic radiation, which can interfere with the functioning of the wall heater.
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Tools And Equipment Needed

Before starting with the installation process, ensure that you have all the necessary tools and equipment. Here are some of the tools and equipment you’ll need.

  • Gas wall heater: This goes without saying, but you will need a gas wall heater, which is appropriate for your room size.
  • Drill: You’ll need a drill to make the necessary holes in the wall for the flue and brackets.
  • Pliers: These will help you with tightening nuts and bolts when assembling your gas wall heater.
  • Spirit level: You’ll need a spirit level to ensure that the wall heater is placed correctly.

Always remember to double-check all the necessary tools and equipment before you begin. Any missing item may cause delays and affect the installation process.

By following these pre-installation preparations, you’re ready to begin the installation process smoothly and efficiently. Remember to maintain safety guidelines, choose an appropriate location, and have all necessary tools at hand.

Installation: Step-By-Step Process

Unpacking The Heater

Before installing a gas wall heater, take some time to inspect the package and make sure that everything is in good condition. Follow these steps:

  • Take out the heater from the box and check for damages or scratches. If there is any damage, do not proceed with the installation and contact the seller or manufacturer.
  • Ensure that all the parts and accessories provided are present and accounted for, including the mounting hardware, thermostat, and instruction manual.
  • Make sure that you have all the necessary tools such as a drill, screwdrivers, wrenches, and pipe cutters, to install the heater securely.
  • Once you have everything ready, you can proceed to the next step in the installation process.
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Wall Mounting The Heater

The next step is to install the heater on the wall securely. Here are some essential tips to keep in mind:

  • Choose an appropriate location for mounting the heater that is away from any flammable materials, like curtains or upholstery.
  • Measure and use a level to make sure that the heater is aligned and straight before you start to drill.
  • Secure the mounting bracket to the wall using screws and make sure that it is firmly in place.
  • Gently attach the heater to the mounting bracket and ensure that it is securely positioned.
  • If the heater comes with an optional fan kit, install it at this time.

Gas Line Installation

One crucial step in the installation process is connecting the gas supply to the heater. Here’s what you need to do:

  • Turn off the main gas supply line before connecting the new line to the heater.
  • Install a 1/2-inch gas supply line with a shut-off valve, flexible gas connector, and sediment trap to the heater’s inlet. Make sure that you follow all the local codes and regulations for gas line installation.
  • Once you have connected the gas line, carefully turn on the gas supply, and check for any leakage. To check for leaks, apply a mixture of soap and water on the connections and look for bubbles. If you see bubbles, there is a gas leak.

Electrical Connection

The next step is to make the electrical connection to the heater. Here is what you need to do:

  • Turn off the power supply to the heater before making any connections.
  • Connect the red and white wires from the thermostat to the corresponding wires on the heater.
  • Ground the green wire to the grounding screw on the heater.
  • Make sure that all the connections are tight and secure before turning on the power supply.
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Final Checks

The last step is to check for any errors before turning on the heater:

  • Make sure that all the steps were followed properly and that all the connections are tight and secure.
  • Turn on the power supply to the heater and test its functionality.
  • Monitor the heater for a few hours to ensure that it is working correctly, with no leaks or issues.
  • If everything is working correctly, sit back, relax, and enjoy the comfort of your newly installed gas wall heater.

With these simple steps, you can install your gas wall heater safely and effectively. However, if you are not confident in doing it yourself, consult a professional gas technician to help you with the installation process.


After going through this step-by-step guide, installing a gas wall heater should not be a complicated task for anyone. The key to success is to follow the instructions and guidelines closely, ensuring that all necessary safety measures are put in place beforehand.

By doing so, you can avoid any mishaps and enjoy the comfort and warmth that installing a gas wall heater can provide. Remember to always ensure that the gas supply is turned off before commencing work and to seek assistance if you are not familiar with gas installations.

If you encounter any issues or uncertain about any steps, it’s advisable to consult a professional technician. With this guide, you can install your gas wall heater efficiently, safely, and with confidence. Enjoy your newly installed gas wall heater!


I am a mechanical engineer and love doing research on different home and outdoor heating options. When I am not working, I love spending time with my family and friends. I also enjoy blogging about my findings and helping others to find the best heating options for their needs.