| A solar air heater is just a simple device that is | | | | has a total matt finish. |
| used to catch the sun's energy to help in heating | | | | 6. Paint the inside of the box using the same paint. |
| up the house. This is a very helpful alternative | | | | The outside layer of the box should be varnished |
| type of energy consumption especially now a | | | | or treated with preservatives. |
| days that the cost of natural gas is continuing to | | | | 7. Glue the columns of cans inside the box into |
| escalate. Typically, it is made up of a shallow box | | | | position using caulk or silicon adhesive. |
| that is covered with glass or plastic glazing to trap | | | | 8. Seal the whole unit with a sheet of tempered |
| solar energy. This sheet provides guidelines on | | | | glass similar to those used in a car windshield as |
| how to build a solar air heater that is designed to | | | | this glass is very strong and resilient to heat. If |
| provide low-cost supply of heated air. | | | | not, plexiglass which is plastic, can also be used |
| This type of solar air heater works by drawing | | | | but it will degrade far more quickly compared to |
| the air to be heated into the bottom can of a | | | | the tempered glass. |
| column of cans and this is how to do it: | | | | 9. Using an insulated pipe, connect the hole at the |
| 1. Make a box using any kind of scrap materials | | | | top of the box (which acts as the hot air outlet) |
| that you have available. | | | | to the room. |
| 2. Make sure that the width of the interior box is | | | | This is how to build a solar heater that is cost |
| exactly the same as that of the number of cans | | | | effective since it simply made form recycled |
| that you would like to use and so with the height | | | | aluminum drinks cans. This solar heater can lift the |
| of the box. | | | | temperature by a significant number of degrees. |
| 3. Drill holes in the bottom and sides of the cans | | | | To heat larger spaces of the heat smaller places |
| to allow the air to pass through. | | | | to a higher temperature, a larger heater of a |
| 4. Glue the cans in each column by the use of a | | | | number of similar heaters can be used. And |
| caulk or silicon adhesive. | | | | basically this solar heater works by drawing the |
| 5. Paint them with black paint to help them absorb | | | | cold air from a hole at the bottom of the box and |
| the sun's energy. A paint that will not flake off like | | | | allowing the heated air to emerge form the top |
| barbecue or fireplace or stove paint is preferred, | | | | passing through a pipe into the room to be |
| but any marine grade paint will do. Make sure it | | | | heated. |