| The reason why greenhouse heaters are so | | | | does not have contaminants in it, this will work |
| important is due to the fact that the temperature | | | | just fine. Flammable liquids should not be placed |
| changes on regular basis through out the day and | | | | near an open combustion heater, though, because |
| night. At some stage it could drop to a low point | | | | its burner is not sealed. |
| that would not be very healthy for the plants. | | | | Separated – A gas greenhouse heater will |
| That is the main reason why it is vital to keep | | | | use this kind of combustion method. Where it will |
| the temperature at a suitable level so that the | | | | use the air from outside the greenhouse for |
| plants growth will be successful. When you choose | | | | combustion. It burner will also have been sealed to |
| a greenhouse heater it is very important that you | | | | trap all of the air from the outside of the |
| also take into consideration not the fact that it | | | | greenhouse. The exhaust pipe will then be run to |
| can keep a good temperature during cold winter | | | | the outside of the greenhouse structure |
| nights but making sure the costs of installing and | | | | Sealed – This kind is a lot similar to the |
| running it are not to high | | | | separated combustion type. The burner is |
| There are numerous kinds of greenhouse heaters | | | | completely sealed inside and there is no access to |
| Gas Heaters – Due to the fact that these | | | | air inside the building. Sealed combustion heaters |
| heaters are fueled by either bottled or natural gas | | | | use direct vent both for exhaust and intake. |
| you will find they will be much less efficient that | | | | Heater Vents |
| electric greenhouse heaters. | | | | Unvented – Being unvented heaters, |
| Another factor to remember is that the waste | | | | combustion-produced gases are directly released |
| that is created is released into the greenhouse | | | | to the heated area. Unvented heaters are only |
| which will then require you to have a ventilation | | | | for temporary use because of the sensitivity of |
| system in place. Gas heaters are not as safe and | | | | some plants. |
| will need to placed in a very safe location, they will | | | | Gravity – The exhaust fumes from this |
| also need constant check ups and you will | | | | kind of heater will rise through the pipe and then |
| probably need to replace it every now and again. | | | | will be released outside. That is the reason why |
| Electric heaters – These type of heaters | | | | the vents should always be vertical. The air that is |
| are suited best for the smaller greenhouse | | | | replaced must be placed by the outside air. |
| structures. Electric heaters are able to efficiently | | | | Power – These power vented heaters |
| maintain the chosen temperature level. The best | | | | have a blower that pushes air through the pipe |
| part about these greenhouse heater is that they | | | | and outside the structure. The vents may be |
| do not produce any fumes so there will be no | | | | arranged vertically or horizontally, and the vent |
| need for installing a ventilation system when these | | | | pipes are smaller making it more efficient. |
| heaters are in use. | | | | Direct – This kind of venting is special to |
| Paraffin heaters. This kind of heaters is the most | | | | sealed combustion types. It has only one vent |
| basic among the three. Paraffin heaters need | | | | pipe with both the inlet and exhaust; one pipe is |
| constant refilling and wick-trimming. They also | | | | inside the other. The amount of air that leaves |
| need fuel to run, thus, fumes are again discharged | | | | the pipe is the same amount that it pulls as intake. |
| into the greenhouse and would need ventilation. | | | | There is no additional air outside needed to |
| However, paraffin heaters can reduce the risk of | | | | replace the expelled air. |
| frost damage and act as emergency standby. | | | | One more thing that you must take into |
| Heater Mounting | | | | consideration is the greenhouse heaters output |
| Hanging – This type of heater is mounted | | | | range or it can also be known as the measure of |
| directly onto the ceiling or it can also be hung | | | | the heat output. Make sure that you consult with |
| from it. The main advantage of using it is due to | | | | the nearby greenhouse store and check to see |
| the fact that it will take up no floor space. The | | | | what range of output you will require. |
| correct level for it to be hung at is just high | | | | This will be determined on the area your |
| enough to make sure there is no obstruction. | | | | greenhouse will be in and a few other factors. |
| Wall – This type of heaters is mounted | | | | There are also a few sites on the web that will |
| directly to the wall and vent towards the outside | | | | be able to do this calculation for you. |
| of the greenhouse. No floor space is required but | | | | There are a wide range of greenhouse heaters |
| the area in front of them should be clear. | | | | around which can often make it hard to choose |
| Floor – This kind of heater is not mounted | | | | one. Before you decide to make a purchase of a |
| as they will have their own stand and are able to | | | | heater make sure to take into account your |
| be placed anywhere on the floor in the | | | | current greenhouse structure and its needs. |
| greenhouse. That is the main disadvantage of | | | | There are many greenhouse experts around who |
| type of heater and it will take up a lot of space | | | | would be more than happy to consult with you |
| Heater Combustion | | | | and give advice on the greenhouse heater that |
| Open – This kind of heater uses air inside | | | | would best suit your needs. |
| the greenhouse for combustion. As long as the air | | | | |