Modine 3H20634-2 Gas Fired Unit Heater Primary Air Control

Gas Fired Unit Heater Primary Air Control (Modine 3H20634-2) ensures precise air intake modulation for efficient combustion in your heating system. This replacement part is designed for use on PD30/PD50/PD75/PD100 gas-fired unit heaters, delivering reliable performance across the Modine lineup. As a key component of many industrial heating systems and Modine gas heater components, this air control supports durable operation, easy maintenance, and consistent heat output.

• Precisely modulates air intake to optimize combustion and reduce fuel use.
• Fully compatible with PD30, PD50, PD75, and PD100 gas-fired unit heaters for quick replacement.
• Robust construction using durable materials to withstand harsh HVAC environments.
• Easy to install as a direct replacement part for Modine air controls with minimal downtime.
• Ensures reliable startup, stable burner operation, and consistent thermostat response.

Invest in this approved Modine primary air control to maintain performance, efficiency, and comfort in commercial and industrial spaces.