Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Utica Boilers · Series
The MAC/MAH family is Utica's wall-hung 'AI' condensing platform — combis MAC-115/150/205 and central-heating models MAH-75/100/125/165 (there is no MAH-205) — on 316L stainless steel heat exchangers at 95% AFUE. Both official pages print a '(While supplies last)' badge with an empty 'Current Documents' tab, so Boilers.ca records the line as discontinued (sell-through).
Series facts
95% AFUE as printed for the family (MAC page: '95% AFUE, ENERGY STAR certified'; MAH page: 'up to 95% AFUE'); the official sell sheet prints 92% for the MAH-75, as recorded in the utica2 research.
The MAC (combi) and MAH (central-heating) wall-hung boilers are Utica's version of the ECR International 'AI' condensing platform (the same line Dunkirk sells as DCC/DCB with the shared manual print PN 240013687). As printed on the official pages checked on September 9, 2026: MAC combi models come in MAC-115, MAC-150 and MAC-205 sizes while the MAH central-heating models are MAH-75, MAH-100, MAH-125 and MAH-165 — the MAH line tops out at 165 MBH, so no MAH-205 exists. The floor-standing MACF/MAHF versions repeat the same ratings on their own pages.
Status as printed: the MAC page and the MAH page each print '(While supplies last)' under the product title and show 'Sorry, There are no current documents for this product!' with all documents — including the Rev. A boiler manuals and the sell sheets — moved under 'Archived Documents'. Boilers.ca therefore records the family as discontinued (sell-through) and documents the model codes so owners and contractors can identify an installed unit and pull the archived literature.
Family figures as printed in the utica2 research headline: 95% AFUE (92% on the MAH-75 per the archived sell sheet), AI auto-commissioning control with continuous calibration, 316L stainless steel heat exchanger and burner with a stainless steel brazed-plate DHW heat exchanger on the combis, CH max/min of 93.5/16.6 MBH (MAC-115) up to 164/29.5 MBH (MAC-205/MAH-165), DHW to 205 MBH, wall dimensions of 30" H x 17-3/4" W with 13-9/16" or 21-1/2" depth (165/205 class), 94-125 lb, and coaxial polypropylene 4"/2" or 5"/3" or 2-pipe 2"/3" polypropylene/CPVC/PVC venting. Gas work belongs with a licensed contractor against the archived manual set.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
Utica Boilers
The Utica MAC-115 is the 115-class (smallest) combi combi of the MAC 'AI' condensing line: 95% AFUE, on-demand DHW at 2.5 GPM (70 °F rise), 5.6:1 heating turndown and the 316L stainless steel heat exchanger. The MAC page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAC-150 is the 150-class mid-size combi combi of the MAC 'AI' condensing line: 95% AFUE, on-demand DHW at 3.5 GPM (70 °F rise), 5.7:1 heating turndown and the 316L stainless steel heat exchanger. The MAC page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAC-205 is the 205-class (largest) combi combi of the MAC 'AI' condensing line: 95% AFUE, on-demand DHW at 5 GPM (70 °F rise), 5.5:1 heating turndown and the 316L stainless steel heat exchanger. The MAC page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAH-75 is the 75-class (smallest) central-heating model central-heating model of the MAH 'AI' condensing line: 92% AFUE (as printed on the sell sheet), 4.5:1 heating turndown and the 316L stainless steel heat exchanger. The MAH page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAH-100 is the 100-class central-heating model central-heating model of the MAH 'AI' condensing line: 95% AFUE, 5.6:1 heating turndown and the 316L stainless steel heat exchanger. The MAH page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAH-125 is the 125-class central-heating model central-heating model of the MAH 'AI' condensing line: 95% AFUE, 5.7:1 heating turndown and the 316L stainless steel heat exchanger. The MAH page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
Utica Boilers
The Utica MAH-165 is the 165-class (largest) central-heating model central-heating model of the MAH 'AI' condensing line: 95% AFUE, 5.5:1 heating turndown and the 316L stainless steel heat exchanger. The MAH page prints '(While supplies last)' with no current documents, so this model is discontinued (sell-through).
| Specification | Utica MAC-115 | Utica MAC-150 | Utica MAC-205 | Utica MAH-75 | Utica MAH-100 | Utica MAH-125 | Utica MAH-165 |
|---|---|---|---|---|---|---|---|
| Central-heating input, minimum | 16.6 MBH | — | 29.5 MBH | — | — | — | 29.5 MBH |
| Central-heating input, maximum | 93.5 MBH | — | 164 MBH | — | — | — | 164 MBH |
| output-max | — | — | — | — | — | — | — |
| AFUE | 95 % | 95 % | 95 % | 92 % | 95 % | 95 % | 95 % |
| turndown | — | — | — | — | — | — | — |
| vent-max-3 | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — |
| Weight | 94-125 lb | 94-125 lb | 94-125 lb | 94-125 lb | 94-125 lb | 94-125 lb | 94-125 lb |
Read the full comparison: Utica MAC-115 vs Utica MAC-205 →
Read the full comparison: Utica MAC-205 vs Utica MAH-165 →
Error codes and alerts
Manuals
Where ROMA provides on-site service
On-site service is currently offered in Greater Vancouver, BC, including Vancouver, Burnaby, Richmond, Surrey, Coquitlam, North Vancouver, West Vancouver, New Westminster, Port Coquitlam, Port Moody, Delta, Langley, Maple Ridge, Abbotsford, Chilliwack, White Rock, Pitt Meadows, Tsawwassen, Anmore, Lions Bay, Belcarra, Bowen Island, Mission. Everything else on this site is reference information you can use anywhere in Canada.
Services for Utica Boilers boilers
Both official pages print '(While supplies last)' with an empty 'Current Documents' tab, which Boilers.ca records as discontinued (sell-through). The floor-standing MACF/MAHF versions carry the same badge on their own pages.
No — as printed on the official pages, the MAH central-heating models are MAH-75, MAH-100, MAH-125 and MAH-165 only. The 205 MBH-class boiler is the MAC-205 combi.
Yes — both brands of ECR International sell the same AI wall-hung condensing platform and share the Rev. A boiler manual print PN 240013687 (MGC-2209-REV-A). The Utica MAC/MAH codes mirror Dunkirk's DCC/DCB models at the same ratings.
Unknown from official pages: uticaboilers.com publishes US-market catalogues and the MAC/MAH pages state no Canadian listing; Utica's fr-CA distributor page names Morden National for Canadian distributor enquiries, but no series-specific Canadian rating was verified, so canadianStatus stays 'unknown'.
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Sources and verification
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.