Spirotherm, Inc. is the industry-leading manufacturer of high-efficiency Spirovent® coalescing air eliminators and Spirotrap® dirt separators for HVAC systems. For nearly 40 years, they have specialized in improving water quality in residential, commercial, and industrial hydronic systems, reducing maintenance, saving energy, and improving heat transfer.
Featured Products
Air Eliminator
Primarily for commercial applications, the Spirovent® VSR and VHR Air Eliminators solve system problems that had been considered “normal” for decades.
Air / Dirt Separator
Providing two full flow functions in one vessel, the Spirovent® VDT, VHT, VDN, and VHN Air Eliminator / Dirt Separators improve system operation without the need for high maintenance side-stream filters. Optionally with magnets to capture ferrous material.
Superior S600 - Vacuum Degasser
Hydraulic Seperator
The Spirovent Quad® VDX Series provides hydraulic separation combined with features of the Spirovent and Spirotrap, all within a low loss header design.
Dirt Separators
Primarily for condenser water systems, the Spirotrap® TDT, THT, TDN, and THN Dirt Separators help prevent fouling and improves chiller operation.
Automatic Air Vent
The Spirotop VTP’s low profile vent valve is a leak-resistant, high point vent that fits just about anywhere. The Spirotop resists dirt particles which can cause ordinary vents to leak.