How to Install a Solar Air Heater: An Easy Guide.

Installing a solar air heater involves mounting it on a south-facing wall and connecting it to air ducts. The process requires basic tools and knowledge of electrical wiring.

Solar air heaters are an excellent way to save money and reduce your carbon footprint. They harness the energy from the sun to heat the air, effectively warming your home without expensive utility bills. However, installing a solar air heater may seem daunting to many.

In this article, we will guide you step by step through the installation process and provide you with all the information you need to get started. Furthermore, we will cover the tools you need and safety precautions you must take to successfully install a solar air heater on your own. Let’s dive in!

How to Install a Solar Air Heater: An Easy Guide.


Planning The Installation

Before starting with the installation process, it’s important to plan every detail properly. Here are the essential things to consider when planning the installation of your solar air heater.

Determine The Heating Needs Of Your Space

Knowing the heating requirements of your space will help you choose the right type and size of solar air heater. Consider factors such as the size of the space, insulation, and location when calculating your heating needs.

Some key points to keep in mind when determining the heating needs of your space are:

  • Measure the space: Take measurements of the area to be heated, including the height, length, and width.
  • Check insulation: Assess the insulation of the space to understand how well it can retain heat.
  • Analyze location: Consider the location of the building, the amount of sunlight it receives, and seasonal changes.
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Choose The Right Type And Size Of Solar Air Heater

Choosing the right type and size is essential to ensure effective heating and optimal energy efficiency. Here are some key points to consider when selecting a solar air heater:

  • Type of solar air heater: There are two types of solar air heaters – glazed and unglazed. Glazed heaters consist of a transparent cover, while unglazed ones are made of a dark, metallic material. Choose the type based on your heating needs and the weather conditions in your location.
  • Size of the heater: The size of the solar air heater should be proportional to the space it will be heating. A good rule of thumb is to have a panel size of around 20% of the room’s floor area.

Assess The Location And Orientation Of The Heater

The location and orientation of the solar air heater play a crucial role in its effectiveness. Here are some points to consider when deciding on the location and orientation of the solar air heater:

  • Sunlight exposure: The solar air heater needs exposure to direct sunlight to be effective. Assess the location of the building to determine the best placement for maximum sunlight exposure.
  • Orientation: Consider the orientation of the solar air heater in terms of its angle and positioning. The ideal orientation is facing south, with an angle that aligns with the latitude of your location.

By planning the installation process, taking into account the heating needs of your space, choosing the right solar air heater and assessing its location and orientation, you can ensure that your solar air heater works effectively, providing optimal energy-efficient heating.

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Installing The Solar Air Heater

Installing the solar air heater:

Now that you have prepared the installation site, it’s time to mount the solar panel and fan onto the south-facing exterior wall. Once the unit is mounted, you can connect it to the ductwork.

Preparing The Installation Site:

Before mounting the solar air heater, you need to prepare the installation site. Here’s how to do it:

  • Choose a south-facing exterior wall where the solar panel can receive maximum sunlight.
  • Make sure the wall is sturdy enough to support the unit’s weight and is not obstructed by neighboring buildings or trees.
  • Use a stud finder to locate the wall studs and mark them using a pencil.
  • Clear the area of any obstructions, such as outdoor furniture or fixtures, to make installation easier.

Mounting The Panels And Fan:

To mount the solar panel and fan, follow these steps:

  • Ensure that the mounting bracket is in place and level.
  • Place the solar panel onto the mounting bracket and fix it in place.
  • Attach the fan to the panel using screws and a screwdriver.
  • Connect the duct intake to the fan using airtight fittings.

Connecting The Heater To The Ductwork:

To connect the heater to the ductwork, follow these steps:

  • Use a hammer drill to create an 8-inch diameter hole on the wall where the heater will be mounted.
  • Insert and fix the wall sleeve onto the hole.
  • Attach the insulated flex duct to the wall sleeve and seal with foil tape.
  • Slide the other end of the flex duct onto the unit’s duct collar and seal it with foil tape.
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Installing The Temperature Sensor And Controller:

To install the temperature sensor and controller, you need to:

  • Fix the temperature sensor to the solar panel and connect it to the controller inside the house.
  • Mount the controller onto the wall near the heater and plug it into a wall outlet.

By following these easy steps, you can install a solar air heater on your own and enjoy its benefits for years to come.


Now that you’ve completed the installation of your solar air heater, you can start reaping the benefits. Not only will you be reducing your carbon footprint and lowering your energy costs, but you’ll also be contributing to a greener planet.

Remember to perform regular maintenance on your solar air heater and optimize its performance by ensuring that it’s positioned correctly, clean and dust-free. Don’t forget to monitor your energy savings, enjoy the warmth, and bask in your contribution to a more sustainable future.

By implementing this alternative heating system, you’ve made a significant difference that is readily visible in your energy bill and the carbon footprint you leave. So, go ahead and take this essential step to reduce your reliance on fossil fuels and join the ever-growing community of solar enthusiasts.


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.