Utica Boilers Utica Condensing Gas Boilers

This hub follows Utica's own product grouping. Checked on September 8, 2026, the official 'Condensing Gas Boilers' and 'Combi Boilers' pages show the current condensing catalogue built around the Oneida Series: the CO (Combi) residential combi in three sizes (80,000–200,000 BTU/hr input) and the CH (Central Heat) residential boiler in five sizes (80,000–180,000 BTU/hr), both rated up to 95.2% AFUE with up to 10:1 turndown on a stainless steel water-tube heat exchanger; Utica also documents larger commercial CH sizes (299/399/499 MBH) on a separate page. Boilers.ca models the residential Oneida CO and CH sizes on the Oneida (CO/CH) series record.

The older condensing pages remain live but carry obsolescence signals: the MAC (combi) / MAH (heating) wall-mounted 'AI' condensing units with MACF/MAHF floor versions all show a '(While supplies last)' badge with archived documents only, and the UCS-240/380 pages do the same. The SSC wall-hung condensing boiler keeps a live product page with current documents but predates the Oneida line, and the floor-standing UB90 Series IV page keeps current documents while absent from the condensing category cards. Boilers.ca documents the MAC/MAH line as discontinued, the SSC and UB90 Series IV models with 'current' status per their live document tabs, and the UB90-200 Series II with its archived-document status, without claiming any of these pre-Oneida lines is part of the current category cards.

Important naming correction: MGC and MGB are NOT Utica condensing models. The official 'MGC' and 'MGB-K' pages are non-condensing cast-iron gas boilers (chimney-vented, around 84% AFUE), and 'MGC Series II / MGB Series II' survives only as a legacy archived page for older non-condensing cast-iron units (50–299 MBH, up to 83.9% AFUE). Utica's Canadian contact is Morden National, named on the official French-Canadian distributor page; gas work on any installed unit belongs with a licensed contractor against the documentation for the specific model.