What Is The Best Non Electric Heater For A Greenhouse?

Are you a greenhouse enthusiast looking for a sustainable and efficient way to keep your plants warm during the chilly winter months? If so, you may be wondering: what is the best non electric heater for a greenhouse? Well, you’re in luck! In this article, we will explore various options and provide you with valuable insights on selecting the ideal non electric heater that not only helps maintain the perfect temperature for your plants but also aligns with your environmentally-friendly values. So, let’s embark on this exciting journey and discover the perfect heating solution for your greenhouse!

Factors to Consider

When choosing a non-electric heater for your greenhouse, there are several factors to consider. These factors include the source of heat, the size of the greenhouse, insulation, temperature control, and durability. Each of these factors will play a role in determining the most suitable non-electric heater for your greenhouse.

Source of Heat

The source of heat for your non-electric heater is an important consideration. Different types of heaters use different fuel sources, such as wood, kerosene, propane, or pellets. Each fuel source has its advantages and disadvantages, so it’s crucial to understand which one will work best for your specific greenhouse needs.

Size of the Greenhouse

The size of your greenhouse will also impact your choice of a non-electric heater. Larger greenhouses will require more powerful heaters that can effectively distribute heat throughout the entire space. On the other hand, smaller greenhouses may not need as powerful of a heater, but it’s still essential to ensure that the chosen heater can adequately heat the entire area.


The insulation of your greenhouse is crucial for maintaining a stable and comfortable temperature. Proper insulation will help to retain heat and prevent cold drafts from entering the greenhouse. It’s important to assess the insulation level of your greenhouse and choose a non-electric heater that can work efficiently with the current insulation or consider upgrading the insulation if necessary.

Temperature Control

Maintaining the ideal temperature in your greenhouse is essential for the health and growth of your plants. Some non-electric heaters come with built-in thermostats or temperature control features that allow you to adjust the heat output. It’s crucial to choose a heater with reliable temperature control to ensure that your plants are kept at an optimal temperature for their growth.


Durability is another important factor to consider when selecting a non-electric heater for your greenhouse. Greenhouses are exposed to various environmental conditions, and the heater should be able to withstand these conditions without malfunctioning or deteriorating prematurely. Look for heaters made from high-quality materials that are designed to withstand the demands of greenhouse use.

Types of Non Electric Heaters

There are several types of non-electric heaters available for greenhouse use. Each type has its unique features, advantages, and disadvantages. Understanding the differences between these types can help you make an informed decision when choosing the best non-electric heater for your greenhouse.

Wood-burning Heaters

Wood-burning heaters are a popular choice for greenhouse owners who have access to a readily available wood supply. These heaters use wood as fuel and produce radiant heat that can effectively warm up the greenhouse. One of the advantages of wood-burning heaters is their affordability, as wood can often be obtained at a lower cost compared to other fuel sources. They also provide a cozy and traditional atmosphere inside the greenhouse. However, it’s important to ensure proper ventilation when using wood-burning heaters to prevent the accumulation of harmful gases.

Kerosene Heaters

Kerosene heaters are another option for greenhouse owners looking for a non-electric heating solution. These heaters are fueled by kerosene and can generate a significant amount of heat. Kerosene heaters are known for their portability, making them a convenient choice for those who may need to move the heater around within the greenhouse. They also offer a long burn time, which means you won’t have to refuel as frequently. However, kerosene heaters can produce strong odors and require proper ventilation to ensure safe usage.

Propane Heaters

Propane heaters are a popular choice for greenhouse owners due to their efficiency and ease of use. These heaters are powered by propane gas and can quickly heat up the greenhouse. Propane heaters offer precise temperature control, allowing you to maintain a consistent temperature for your plants. They are also known for their clean-burning properties, producing minimal odors or emissions. Propane heaters come in various sizes and styles, making it easy to find one that suits your greenhouse needs. However, it’s important to ensure proper ventilation and monitor gas levels when using propane heaters.

Pellet Stoves

Pellet stoves are another type of non-electric heater that can be used in greenhouses. These stoves use wood pellets as fuel and provide a reliable source of heat. Pellet stoves offer easy temperature control, allowing you to adjust the heat output according to your specific needs. They are also known for their high efficiency, as they burn the fuel pellets cleanly and produce minimal emissions. However, pellet stoves may require regular maintenance, such as cleaning out ash residues, to ensure optimal performance.

Alternative Heating Methods

In addition to non-electric heaters, there are other alternative heating methods that can be considered for greenhouse use. These methods utilize renewable energy sources and offer environmentally-friendly options for heating your greenhouse.

Solar Heating

Solar heating harnesses the power of the sun to generate heat for your greenhouse. This method involves installing solar panels or solar collectors that absorb sunlight and convert it into heat energy. Solar heating systems can be integrated into the design of your greenhouse or added as a separate system. They offer a sustainable and cost-effective solution for heating your greenhouse, utilizing a free and abundant energy source. However, solar heating systems may be less effective during periods of low solar radiation or in regions with limited sunlight.

Geothermal Heating

Geothermal heating utilizes the natural heat stored in the earth to warm your greenhouse. This method involves installing geothermal heat pumps or geothermal loops that extract heat from the ground and distribute it throughout the greenhouse. Geothermal heating systems are highly efficient and can provide a consistent source of heat throughout the year. They also have low operating costs and reduce greenhouse gas emissions. However, geothermal heating systems require initial investment and may require professional installation.

Thermal Mass

Thermal mass refers to the ability of a material to store heat and release it slowly over time. Utilizing thermal mass in your greenhouse design can help regulate temperature fluctuations and reduce the need for additional heating sources. Materials such as concrete, stone, or water can be incorporated into the greenhouse structure to act as thermal mass. These materials absorb heat during the day and release it during the cooler nights, providing a stable environment for your plants. However, the effectiveness of thermal mass will depend on factors such as greenhouse size, insulation, and location.

In conclusion, choosing the best non-electric heater for your greenhouse involves considering various factors such as the heat source, greenhouse size, insulation, temperature control, and durability. Wood-burning heaters, kerosene heaters, propane heaters, and pellet stoves are popular options that offer different advantages and disadvantages. Additionally, alternative heating methods like solar heating, geothermal heating, and thermal mass can provide sustainable and environmentally-friendly alternatives for heating your greenhouse. By carefully assessing your greenhouse’s specific requirements and researching the available options, you can select the most suitable non-electric heater to ensure optimal growing conditions for your plants.

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About the Author: Jake Scott