Tankless Heater for Weil-McLain WTGO-3 to WTGO-6 Boilers
$453.37 on Amazon.com (as of October 16, 2026, 7:16 PM EST) View details ↗
Upgrade your Weil-McLain boiler system with this precision-engineered tankless heater, designed to fit the WTGO-3, WTGO-4, WTGO-5, and WTGO-6 models. The unit delivers consistent, efficient heating performance while eliminating the bulk and maintenance demands of traditional storage heaters. Each package comes complete with a gasket, nuts, and studs, ensuring a seamless installation that meets manufacturer specifications.
Installation is straightforward: the heater is engineered to align with the existing boiler architecture, allowing you to replace or supplement your current heating system without extensive modifications. The included mounting hardware guarantees a secure fit, while the gasket provides a reliable seal to prevent leaks. Once installed, the tankless heater operates quietly and efficiently, providing instant heat on demand and reducing energy consumption compared to conventional storage units.






