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10 Best cheap to run greenhouse heaters

Welcome to our top 10 product reviews for cheap to run greenhouse heaters. We've scoured the market to bring you the best of the best, with products ranging from a 7.1 score up to a whopping 9.8 score!

Updated January 2026
bestBest value
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HEISSER 2800W Electric Workshop Garage Heater – Portable Space Heater for Home, Garage, Office & Greenhouse | Low Energy Consumption, Adjustable Thermostat, 2 Heat Settings, Overheat Protection
9.5
Excellent

HEISSER 2800W Electric Workshop Garage Heater – Portable Space Heater for Home, Garage, Office & Greenhouse | Low Energy Consumption, Adjustable Thermostat, 2 Heat Settings, Overheat Protection

Main Highlights

POWERFUL & FAST CERAMIC HEATING:The HEISSER HS-CFH283 2800W ceramic fan heater delivers quick, efficient warmth for rooms up to 30 m², producing 9553 BTU/h of heat — ideal for homes, offices, garages, or workshops.

QUICK & POWERFUL HEAT OUTPUT:Featuring advanced PTC ceramic technology, this electric space heater provides even, energy-saving heat with steady air circulation. Please note: the built-in fan motor produces a noticeable noise during operation, which is normal for its high-performance heating system.

ADJUSTABLE THERMOSTAT & DUAL POWER SETTINGS:Choose from 1400 W or 2800 W power levels and fine-tune your comfort with the adjustable thermostat, keeping your space warm without wasting energy.

LOW ENERGY CONSUMPTION:With tested 85% seasonal efficiency, and full compliance with Ecodesign Directive 2015/1188, this heater delivers powerful yet energy-conscious performance.

SAFE INDOOR HEATING:Enjoy peace of mind with overheat protection and an IP20 safety rating, making this electric fan heater a reliable choice for indoor environments such as greenhouses or workshops.

DURABLE METAL CONSTRUCTION:Built with a strong metal frame and freestanding pedestal design, this portable heater ensures long-lasting performance and stable placement on any surface.

COMPACT & PORTABLE DESIGN:Weighing just 2.85 kg with a 1.6 m cable, this small heater is easy to carry and move between rooms — a versatile, energy-efficient heater for home and workspace comfort.

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9.5
Excellent
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One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched

Why Trust One Clear Winner?

One Clear Winner spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own.

About One Clear Winner

How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

Learn more about testing

51

Products Considered

62

Consumers Consulted

24

Hours Researched