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The Ideal Greenhouse Heaters To Choose From

Aug 17, 2007
The reason why greenhouse heaters are so important is due to the fact that the temperature changes on regular basis through out the day and night. At some stage it could drop to a low point that would not be very healthy for the plants.

That is the main reason why it is vital to keep the temperature at a suitable level so that the plants growth will be successful. When you choose a greenhouse heater it is very important that you also take into consideration not the fact that it can keep a good temperature during cold winter nights but making sure the costs of installing and running it are not to high

There are numerous kinds of greenhouse heaters

Gas Heaters - Due to the fact that these heaters are fueled by either bottled or natural gas you will find they will be much less efficient that electric greenhouse heaters.

Another factor to remember is that the waste that is created is released into the greenhouse which will then require you to have a ventilation system in place. Gas heaters are not as safe and will need to placed in a very safe location, they will also need constant check ups and you will probably need to replace it every now and again.

Electric heaters - These type of heaters are suited best for the smaller greenhouse structures. Electric heaters are able to efficiently maintain the chosen temperature level. The best part about these greenhouse heater is that they do not produce any fumes so there will be no need for installing a ventilation system when these heaters are in use.

Paraffin heaters. This kind of heaters is the most basic among the three. Paraffin heaters need constant refilling and wick-trimming. They also need fuel to run, thus, fumes are again discharged into the greenhouse and would need ventilation. However, paraffin heaters can reduce the risk of frost damage and act as emergency standby.

Heater Mounting

Hanging - This type of heater is mounted directly onto the ceiling or it can also be hung from it. The main advantage of using it is due to the fact that it will take up no floor space. The correct level for it to be hung at is just high enough to make sure there is no obstruction.

Wall - This type of heaters is mounted directly to the wall and vent towards the outside of the greenhouse. No floor space is required but the area in front of them should be clear.

Floor - This kind of heater is not mounted as they will have their own stand and are able to be placed anywhere on the floor in the greenhouse. That is the main disadvantage of type of heater and it will take up a lot of space

Heater Combustion

Open - This kind of heater uses air inside the greenhouse for combustion. As long as the air does not have contaminants in it, this will work just fine. Flammable liquids should not be placed near an open combustion heater, though, because its burner is not sealed.

Separated - A gas greenhouse heater will use this kind of combustion method. Where it will use the air from outside the greenhouse for combustion. It burner will also have been sealed to trap all of the air from the outside of the greenhouse. The exhaust pipe will then be run to the outside of the greenhouse structure

Sealed - This kind is a lot similar to the separated combustion type. The burner is completely sealed inside and there is no access to air inside the building. Sealed combustion heaters use direct vent both for exhaust and intake.

Heater Vents

Unvented - Being unvented heaters, combustion-produced gases are directly released to the heated area. Unvented heaters are only for temporary use because of the sensitivity of some plants.

Gravity - The exhaust fumes from this kind of heater will rise through the pipe and then will be released outside. That is the reason why the vents should always be vertical. The air that is replaced must be placed by the outside air.

Power - These power vented heaters have a blower that pushes air through the pipe and outside the structure. The vents may be arranged vertically or horizontally, and the vent pipes are smaller making it more efficient.

Direct - This kind of venting is special to sealed combustion types. It has only one vent pipe with both the inlet and exhaust; one pipe is inside the other. The amount of air that leaves the pipe is the same amount that it pulls as intake. There is no additional air outside needed to replace the expelled air.

One more thing that you must take into consideration is the greenhouse heaters output range or it can also be known as the measure of the heat output. Make sure that you consult with the nearby greenhouse store and check to see what range of output you will require.

This will be determined on the area your greenhouse will be in and a few other factors. There are also a few sites on the web that will be able to do this calculation for you.

There are a wide range of greenhouse heaters around which can often make it hard to choose one. Before you decide to make a purchase of a heater make sure to take into account your current greenhouse structure and its needs.

There are many greenhouse experts around who would be more than happy to consult with you and give advice on the greenhouse heater that would best suit your needs.
About the Author
Discover all the important aspects to greenhouses that will ensure you grow beautiful flowers all year round. Visit greenhouse growing tips. To read articles on greenhouses then visit greenhouse growing articles
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