Modine PTP 300 Low-Profile Tubular Unit Heater — 300,000 BTU/hr Natural Gas Power Vented Stainless Steel

Modine PTP 300 Low-Profile Tubular Unit Heater -- 300,000 BTU/hr Natural Gas, Stainless Steel

The Modine PTP 300 Low-Profile Tubular Unit Heater delivers 300,000 BTU/hr of reliable, efficient heat for large indoor cultivation facilities, warehouses, and commercial growing spaces. Engineered for up to 83% thermal efficiency, the MODINPTP300SS-0111 provides consistent, powerful heating in a compact low-profile design that keeps installation straightforward and minimizes overhead footprint in grow rooms, greenhouses, and multi-bay facilities. The PTP 300 delivers the highest heat output in the PTP series, making it the preferred choice for the largest single-bay grow rooms and high-ceiling commercial greenhouse complexes.

Built with a stainless steel heat exchanger and stainless steel burner for corrosion resistance in humid growing environments, the MODINPTP300SS-0111 features a factory-installed power exhauster and horizontal power venting system that supports simplified installation with small-diameter pipe. Direct spark ignition with continuous retry, plus redundant safety cutoffs including a high-limit control, flame roll-out switch, and vent proving switch, provides dependable startup reliability, while the permanently lubricated motor reduces ongoing maintenance requirements. ETL certified for commercial and industrial use in the United States and Canada.

Key Features & Benefits

• 300,000 BTU/hr Heat Output: Delivers high-capacity heating suitable for large grow rooms, commercial greenhouses, and multi-bay cultivation facilities.
• Up to 83% Thermal Efficiency: Maximizes heat output per unit of fuel for cost-effective operation in continuously heated grow environments.
• Stainless Steel Heat Exchanger & Burner: Provides corrosion resistance in the high-humidity conditions of active indoor cultivation facilities.
• Factory-Installed Power Exhauster: Simplifies installation with horizontal venting through small-diameter pipe, reducing setup complexity and cost.
• Field-Convertible to Propane: Flexibility to switch fuel source in the field using a factory conversion kit, without returning the unit for factory modification.
• 10-Year Heat Exchanger Warranty: Reflects the long-term durability of the stainless steel heat exchanger.
• 4,460-4,545 CFM Airflow: Permanently lubricated motor reduces maintenance intervals and supports reliable, long-term continuous operation.
• ETL Certified: Tested and certified for commercial and industrial use in the United States and Canada.

Who Should Use the Modine PTP 300 Unit Heater

The MODINPTP300SS-0111 is the heating solution for large-scale indoor cultivators, commercial greenhouse operators, and facility managers who need reliable, high-output heating that can withstand continuous operation in humid growing environments. It is particularly suited to multi-room facilities, large single-bay grow spaces, and operations in cold climates where maintaining consistent ambient temperatures through winter months is critical to crop performance and equipment protection.

Frequently Asked Questions

What fuel type does the PTP 300 use, and can it run on propane?

The PTP 300 ships configured for natural gas. It is field-convertible to propane using a dedicated factory conversion kit, providing fuel flexibility for facilities without natural gas infrastructure.

What is the thermal efficiency of the PTP 300?

The PTP 300 achieves up to 82-83% thermal efficiency. That means the majority of fuel energy converts to usable heat output, reducing operating costs compared to lower-efficiency units.

What power supply does the PTP 300 require?

The PTP 300 operates on a standard 115V/60Hz single-phase power supply for the blower motor and controls. Natural gas or propane supply is required for combustion.

How is the PTP 300 vented and what safety controls does it include?

The PTP 300 uses a factory-installed power exhauster for horizontal venting through small-diameter pipe. It includes direct spark ignition with continuous retry plus a high-limit control, flame roll-out switch, and vent proving switch for redundant safety shutoff.

What is covered by the 10-year heat exchanger warranty?

Modine provides a 10-year limited warranty on the stainless steel heat exchanger, reflecting confidence in its long-term durability. Refer to Modine's warranty documentation for full terms and conditions.