How to install gas heater? [STEP BY STEP]

The installation of the gas heater must necessarily follow all the guidelines of Standard NBR 13103, which determines all protocols for installing gas appliances.

Below, we summarize the step-by-step installation of the gas heater, but knowing the steps does not dispense with the presence of a qualified professional to carry out the installation.

The steps are:

  • Define the most suitable place for installing the gas heater. It is important, from the planning of the project, to keep in mind where it will be installed to prepare all the hydraulic system, pipes and registers;
  • Choose the type of gas used: LPG or natural gas;
  • Decide on the best type of gas heater according to installation location and gas type. You can check out great options with a variety of prices and models at Workmax;
  • Keep the installation area free of chemicals and flammables;
  • Obtain all equipment and tools for installation. Some heaters are already sold with the kit, but in general you should also have knees and registers, couplings, clamps and chimney;
  • Hire a qualified professional who has evidence of training or experience in installing gas heaters.
  • How should the maintenance and inspection of the gas heater be carried out?


Generally, the manufacturer itself determines a maintenance frequency. So it can vary a lot for each case. In general, it is recommended that maintenance be done once a year for everyone’s safety. Read more blogs here

Until then, there is no national legislation on inspection, but in some states it is possible that there are laws on maintenance and inspection of the gas heater due to local accident prevention measures.

Regardless of being registered by law, it is important that residents and traders carry out maintenance and inspection to avoid accidents, leaks and damage.

In homes, the ideal is an annual inspection, but in industrial installations, every six months is recommended.

What should be analyzed in the inspection?

The inspection must verify the state of conservation of the device, identifying if there are defects, leaks and if all the parts are in the expected quality.

After a more visual analysis, the gas heater should be tested for function to be evaluated.

The flame, thermostat performance, exhaust chimneys, temperature and water flow are some of the points observed.

Where should the gas heater be installed?

The gas heater must be installed in an environment with permanent ventilation, due to its system that consumes oxygen during combustion.

Because of this characteristic, it is usually installed in service areas, balconies and backyards, where air circulation is constant.

When the gas heater is installed indoors in the building, a minimum distance of 40 cm is recommended between the appliance and the window, so that the wind does not return and extinguish the flame or generate some type of leak.

In addition to the places indicated, there are also places where installation is not allowed, such as bathrooms and dormitories.

The exception to this rule is when the heater has a closed circuit. In these cases, the gas heater has something that is called balanced flow, or airtight. Looking for the Water Heater Repair in Lubbock TX Contact here

This means that it does not use ambient air for combustion and that it connects to an exterior duct of the building, bringing in oxygen from outside.

In these specific cases, there is no need for permanent ventilation in the environment, but it is a system that requires planning in the construction of the project.

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