Spirotherm

Spirotherm has developed and manufactured products for water quality management in HVAC systems for close to 40 years, operating as a subsidiary of Spiro Enterprises, Inc. The company supports its distributor and contractor base through a network of factory trained sales offices located across North America.

SupplyHouse carries Spirotherm's air and dirt separation equipment for mechanical contractors working on commercial, industrial, institutional, and residential hydronic systems.

Product Lines

Spirotherm's two core product families are Spirovent, a line of coalescing-type air elimination products, and Spirotrap, its dirt separator lineup. Equipment across both families spans pipe sizes from 3/4 inch up to 36 inches and is rated to handle system flows exceeding 30,000 GPM.

The broader catalog includes air eliminators, combination air and dirt separators, magnetic dirt separators, hydraulic separators, and automatic air vents. Spirotherm also produces vacuum degassers, including its newer Superior S600 model, and builds custom units for specialized applications such as data center cooling loops.

Why Contractors Specify Spirotherm

Mechanical contractors specify Spirotherm equipment on hydronic system installs where trapped air or circulating debris has caused recurring pump or heat exchanger problems on a prior system. Coalescing air elimination and dirt separation address two of the most common sources of hydronic system callbacks in one product line. Coverage across a wide pipe size range, from small residential loops up to large flows exceeding 30,000 GPM, lets a contractor stay with one manufacturer on both small commercial jobs and larger institutional systems.

Spirotherm's network of factory trained sales offices supports its distributor and contractor base across North America.

How to Choose Spirotherm Products

Determine whether the system needs air elimination, dirt separation, or both, since Spirovent and Spirotrap address different contamination sources even though they're often installed together on the same loop. Size the unit to the system's pipe diameter and expected flow rate rather than defaulting to a common stock size. This matters most on systems approaching the higher end of the flow range.

For systems already experiencing gas binding or micro-bubble noise complaints, an automatic air vent alone may not be sufficient. In that case, review whether a full coalescing air eliminator is the better fit before finalizing equipment selection. Data centers and other specialized cooling loops may call for a custom-configured unit rather than a standard catalog model.

Frequently Asked Questions

What is the difference between Spirovent and Spirotrap?

Spirovent is Spirotherm's coalescing-type air elimination product line, while Spirotrap is its dirt separator lineup, and the two address different contamination sources in a hydronic system.

What pipe sizes does Spirotherm equipment cover?

Spirovent and Spirotrap equipment span pipe sizes from 3/4 inch up to 36 inches and are rated for flows exceeding 30,000 GPM.

Does Spirotherm make combination air and dirt separators?

Yes, in addition to standalone air eliminators and dirt separators, Spirotherm offers combination units along with magnetic and hydraulic separators.

What is the Superior S600?

The Superior S600 is one of Spirotherm's vacuum degasser models, part of its broader catalog.

Can Spirotherm build custom equipment for specialized applications?

Yes, Spirotherm produces custom units for specialized applications such as data center cooling loops, in addition to its standard catalog products.