Best Commercial Greenhouse Heater Options for Reliable Plant Climate Control

Keeping your greenhouse at the right temperature is essential for plant health and productivity. This guide compares top-rated commercial greenhouse heaters, showing key specs, mounting and control features, and safety functions to help you choose the right unit for your space.

Product	Type / Power	Key Feature
Dr Infrared Heater DR-268	Infrared / Digital thermostat	IPX5 water resistance, built-in digital thermostat
DR. Infrared Heater DR218-1500W	Infrared / 1500W	Simple 1500W output, IPX4 splash protection
Buyplus Greenhouse Heater	Electric PTC / 1500W	Digital thermostat, rapid 3s heating, 215 sq ft coverage
SwSun 1500W Smart Heater	Electric PTC / 1500W	Wi‑Fi app control, alerts, multiple protections
Dura Heat EUH1465 Forced Air Heater	PTC Ceramic / 1500W (5,120 BTU)	Durable steel body, pivoting base, fan-only mode

Dr Infrared Heater DR-268 Smart Greenhouse Heater

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This wall/ceiling-mountable infrared heater is designed for greenhouse use with an IPX5 water-resistance rating and a digital thermostat with a corded probe. The unit offers clean, odorless infrared heat that radiates directly to plants and surfaces rather than simply heating air.

• Water Resistance: IPX5-rated for indoor and sheltered outdoor environments, useful in humid greenhouse conditions.
• Temperature Control: Built-in digital display and corded sensor probe allow accurate setpoint control; selectable Auto and Manual modes.
• Mounting Flexibility: Can be wall-, ceiling-mounted, or hung with chain hardware, enabling targeted placement above benches or aisles.
• Coverage & Use: Marketed for greenhouse, shed, garage, and grow-tent applications where infrared radiation is preferred.

For setups that require precise temperature maintenance and protection from occasional water exposure, the DR-268’s digital probe and IP rating make it a strong technical choice.

DR. Infrared Heater DR218-1500W

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The DR218 is a straightforward 1500W infrared heater with a single heat setting designed to maintain temperatures in small greenhouse spaces. The IPX4 splash protection rating gives a measure of water resistance suitable for humid environments.

• Fixed Output: One 1500W setting simplifies operation for users who want a constant heat source without complex programming.
• Water Protection: IPX4-rated against splashing water, making it suitable for greenhouses where moisture is common.
• Coverage: Manufacturer-stated coverage for smaller greenhouse areas (approximate coverage indicated around 150 sq ft depending on insulation).

This model suits growers who prefer a reliable, no-frills infrared source and plan to use external thermostatic controls if variable setpoints are required.

Buyplus Greenhouse Heater With Digital Thermostat

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The Buyplus heater is a 1500W PTC electric unit that emphasizes quick warm-up and thermostat control. It includes a waterproof temperature probe and claims broader coverage with rapid heat delivery.

• Fast Heating: Advertised 3-second rapid heating to provide near-instant warmth for localized zones.
• Digital Thermostat: External probe senses air temperature to maintain setpoint; adjustable range from 40°F to 108°F (5°C–42°C).
• Safety: Built-in overheat protection and a self-resetting breaker for circuit recovery after temperature excursions.
• Versatility: Suitable for greenhouse, patio, garage, grow tent, and flower rooms; designed for both plant and general-purpose use.

The Buyplus unit is positioned for growers who need responsive heating with an integrated thermostat and automatic safety protections for unattended operation.

SwSun Smart 1500W Greenhouse Heater

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The SwSun model adds Wi‑Fi smart control and app-based temperature alerts to a 1500W heating platform. It includes multiple safety cutouts and tip-over protection, enabling remote monitoring of greenhouse conditions.

• Smart Control: App-based control offers remote on/off, schedule, and temperature threshold settings, plus real-time temperature display.
• Alerts: High/low temperature alarms notify users of out-of-range conditions for rapid intervention.
• Protections: Overheat and tip-over protections shut the unit off for safety; multiple built-in redundancies aim to protect plants and hardware.
• Portable Design: Intended for portable placement in greenhouses, grow tents, and sunrooms where remote oversight is beneficial.

Use this option when remote monitoring and automated alerts are valuable — for example, in unattended or off-site greenhouse operations.

Dura Heat EUH1465 Electric Forced Air Heater

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The Dura Heat EUH1465 is a compact forced-air PTC ceramic heater offering 1500W (about 5,120 BTU) output with a pivoting base and durable steel housing. It provides targeted warm air circulation rather than direct infrared radiation.

• Construction: Rugged steel body designed for workshop and commercial use where durability matters.
• Modes: Heat and fan-only settings let users circulate air without heating or provide warm forced air when needed.
• Portability: Pivoting base helps direct airflow; compact form factor suits bench-top or floor placement.
• Application: Best for spot-heating areas and maintaining air movement to avoid cold pockets in greenhouses.

The Dura Heat unit is appropriate where direct convection heat and air circulation are preferred over radiant methods, or where a rugged, portable design is required.

Buying Guide: Choosing The Right Commercial Greenhouse Heater

Selecting the right heater depends on greenhouse size, plant types, insulation, power availability, and desired level of control. Below are key factors to evaluate.

Heating Type: Infrared vs Convection

Infrared Heaters (DR models) warm objects and plant surfaces directly, reducing heat loss to air and often improving germination and growth at night. Infrared is efficient for spot heating and for greenhouses with some air exchange.

Convection / Forced-Air Heaters (PTC ceramic and fan units like Dura Heat) heat air and provide circulation. They help eliminate cold pockets and can be better where uniform air temperature is required or when rapid air warming is needed.

Power And Coverage

Most small commercial greenhouse heaters in this list are 1500W. Coverage depends on insulation, greenhouse height, and heat loss. Use manufacturer coverage estimates as a starting point, but plan for higher capacity or multiple units in poorly insulated or larger spaces.

Temperature Control And Accuracy

Built-in digital thermostats or external probe thermostats increase precision. Look for units with a corded probe that can be positioned in the plant canopy for accurate ambient readings. Smart units with app control offer remote monitoring and alerts for unattended operations.

Water Resistance And Environmental Ratings

Greenhouses are humid and can have condensation. Choose heaters with an appropriate IP rating: IPX4 provides splash protection; IPX5 offers higher resistance to water jets and is preferable in wetter conditions. Ensure wiring and thermostat probes are rated for greenhouse environments.

Mounting And Placement Options

Ceiling-mounted or wall-mounted units (like many infrared models) deliver directional heat from above and keep units away from wet floors. Portable or floor models are easier to move but require safe placement to avoid tip-over and near-plant contact.

Safety Features

Essential safety elements include overheat protection, tip-over shutoff, flame-retardant materials, and thermal cut-offs. Self-resetting breakers can protect circuits but verify compatibility with your greenhouse electrical setup. ETL or UL certification indicates independent electrical safety testing.

Response Time And Heat Distribution

Rapid-start heaters provide immediate warmth for short cold snaps, but consider whether you need sustained uniform heat. Infrared provides quick surface warming; PTC and forced-air heaters give more volumetric air heating and circulation.

Noise And Plant Sensitivity

Forced-air heaters with fans generate more noise than infrared units. For noise-sensitive operations or locations near occupied spaces, prioritize quieter infrared or low-noise PTC units.

Control Integration And Automation

Consider compatibility with external controllers, timers, or greenhouse automation systems. Smart heaters with Wi‑Fi or app controls simplify remote management and enable alerts for temperature excursions, helpful for commercial operations with off-site staff.

Energy Efficiency And Operating Costs

Estimate expected runtime and electricity rates to compare operating costs between multiple smaller units and fewer larger units. Infrared can be more efficient for targeted heating, while convection may require longer run times to maintain air temperature.

Maintenance And Durability

Choose units with corrosion-resistant housings and accessible filters or parts if routine cleaning is required. Steel housings and durable components are better suited to commercial greenhouse environments.

Comparison Perspectives

• Small Bench Areas: Infrared units with targeted mounting deliver focused warmth to benches and seed trays.
• Uniform Air Temperatures: Forced-air PTC units circulate air to minimize cold spots in larger enclosures.
• Remote Monitoring Needs: Smart units with app control and alerts reduce the risk of unattended temperature failures.
• High Humidity Environments: Prefer higher IP ratings and waterproof probes to avoid moisture-related failures.
• Durability-First Installations: Rugged steel-bodied heaters are better for commercial and heavy-use situations.

Use these considerations to match heater type, control features, and safety options to your greenhouse layout and operational needs. Properly sized and controlled heating improves plant resilience and reduces energy waste.