HeatStar Blue Flame Heater — 20,000 BTU Propane

HeatStar Blue Flame Heater — 20,000 BTU Propane

The HeatStar Blue Flame Heater delivers safe, clean-burning propane heat for your greenhouse, shop, garage, or home. At $316, the 20,000 BTU model covers up to 700 square feet, operates without electricity (ideal for power outages), and requires no venting or chimney. It includes a built-in thermostat, blower fan, and electronic ignition.

⚠️ Installation kit required: This heater requires the Remote Propane Vent-Free Installation Kit to operate. It can be purchased separately or bundled with this heater at checkout.

⚠️ Cannot be shipped to California.

What Are the Key Specs?

• Fuel: Propane
• BTU output: 20,000 BTU (max)
• Heat coverage: Up to 700 sq. ft.
• Thermostat: Built-in
• Blower fan: Built-in 110V (factory-installed)
• Ignition: Electronic battery ignition (1 AA battery included)
• Efficiency: 99.9%
• Venting: Vent-free — no chimney or flue required
• Mounting: Wall-mountable or freestanding (feet kit included)
• Dimensions: 23.5" L × 12.5" W × 27.25" H
• Weight: 30 lbs
• Certification: CSA certified for use in the USA
• Warranty: 5-year limited

Does This Heater Require an Installation Kit?

Yes — this heater requires the Remote Propane Vent-Free Installation Kit for proper installation. The kit can be added to your cart separately or bundled with the heater at checkout. Do not purchase this heater without also ordering the installation kit.

Does It Work During a Power Outage?

Yes — the HeatStar Blue Flame Heater operates without electricity, making it a reliable heat source during power outages. The electronic ignition runs on a single AA battery (included). The built-in 110V blower fan does require electricity to operate, but the heater itself will still produce heat without it.

Is This Heater Safe for Greenhouse Use?

The HeatStar Blue Flame is a vent-free propane heater with a built-in low oxygen shut-off (ODS) sensor that automatically shuts the heater off if oxygen levels drop below a safe threshold — a critical safety feature for enclosed spaces like greenhouses. It is CSA certified for use in the USA. Note: this unit is not approved for use in bedrooms. Ensure adequate ventilation in your greenhouse when operating any propane heater.

Can This Heater Ship to California?

No — this heater cannot be shipped to California due to state regulations on vent-free propane heating products. If you're in California, contact the Grandio team to discuss alternative greenhouse heating options.

Key Features

• 20,000 BTU — heats up to 700 sq. ft.
• 99.9% efficient — clean-burning propane
• Vent-free — no chimney or flue required
• Built-in ODS sensor — auto shut-off if oxygen drops
• Built-in thermostat and blower fan
• Works without electricity — battery electronic ignition
• Wall-mountable or freestanding — feet kit included
• CSA certified — USA approved
• 5-year limited warranty
• Installation kit required — sold separately or bundled at checkout
• Cannot ship to California
• Ships in 1–2 weeks

In stock — ships in 1–2 weeks. Cannot be shipped to California.