Rinnai · M-Series (discontinued)
Rinnai M090SN
The Rinnai M090SN is a discontinued Canadian M-Series heating-only solo boiler — a compact wall-mounted condensing natural-gas unit documented from the specs printed on its orphaned rinnai.ca page.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- —
- Min input
- 17 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Rinnai M090SN in practice
The M090SN belongs to the M-Series, Rinnai Canada's condensing boiler family that preceded the current IP-coded I-Series+ line: a heating-only solo whose page copy describes a compact, wall-mounted natural-gas boiler 'designed for easy installation as a retro-fit to traditional less efficient boilers' that 'can deliver whole house heating'. The rinnai.ca product-detail page still returns HTTP 200 and continues to list the M-Series I&O manual, conversion manuals and an AHRI certificate, but the page is orphaned — not in the site navigation, no models on the category grid — and rinnai.ca's discontinued-product notice applies.
Specs on this Boilers.ca record are printed on the M090SN page's own Specifications and Supply Connections tables on 2026-09-09: 64 lb / (29 kg) product weight, 31.8 / 17.3 / 10.46 in (808/440/266 mm) H×W×D and a 3/4" MNPT gas connection, printed Residential ENERGY STAR 'Yes' and SCAQMD 'Ultra Low NOx' rows, and a Natural Gas Gas Type row (propane is a field conversion covered by the listed conversion manual).
Page-print quirk kept and flagged: the solo page's maximum-input hero bullet prints 'N (maximum)' — a truncated value on every legacy M-Series solo page — and its Domestic Hot Water Flow Rate row prints N/A, so no numeric maximum input or DHW flow is recorded. No AFUE percentage is printed on the orphan pages, so none is recorded here.
Best suited to
- Owners and service technicians identifying an installed M090SN against the code on its rating plate
- Service planning for an M-Series boiler whose manuals still live on the orphaned rinnai.ca page
Applicability and support
- Model number
- M090SN
- Canadian availability
- historical
- Production status
- discontinued
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Not verified
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.
Specifications
Published specifications
Values as published by Rinnai. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Central heating capacity (as printed) | 90 MBH | Specifications row printed 'Central Heating Capacity | 90,000 BTU / (26.4 kW)' — the printed kW conversion matches an input figure, so Boilers.ca records the row as printed under input; no AFUE percentage is printed on the page. |
| Minimum input (hero bullet, NG) | 17 MBH | 17,000 BTU (minimum), as printed on the page's 'NG:' hero bullet list. |
| Maximum input (hero bullet, as printed) | N (maximum) — page print bug | Every legacy M-Series solo page prints its maximum-input hero bullet as 'N (maximum)' — a truncated value on the page; the solo page's Domestic Hot Water Flow Rate row prints N/A. No numeric maximum is printed anywhere on the solo page. |
| Domestic hot water | ||
| Domestic hot water flow rate (maximum) | N/A | Row printed as printed on the M-Series solo page (heating-only unit with no internal DHW). |
| Physical and connections | ||
| Product weight | 64 lb | 64 lb / (29 kg), as printed on the Specifications table. |
| Product height | 31.8 in (808 mm) | As printed on the rinnai.ca Specifications table. |
| Product width | 17.3 in (440 mm) | As printed on the rinnai.ca Specifications table. |
| Product depth | 10.46 in (266 mm) | As printed on the rinnai.ca Specifications table. |
| Gas connection | 3/4" MNPT (19 mm) | Row printed 'Gas | 3/4" MNPT / (19 mm)' in the page's Supply Connections table. |
| Operating limits and other | ||
| Residential ENERGY STAR | Yes | Row printed 'Residential ENERGY STAR® | Yes' on the rinnai.ca Specifications table. |
| SCAQMD approval | Ultra Low NOx | Row printed 'SCAQMD Approved | Ultra Low NOx' on the rinnai.ca Specifications table. |
| Gas type (as printed) | Natural Gas | The Gas Type row prints Natural Gas on every page, while the page copy says the boiler is 'Fueled with either Natural Gas or Propane' — propane is a field conversion, and the page lists the conversion manual. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
Is the Rinnai M090SN still sold in Canada?
No. The M-Series is the earlier Rinnai Canada condensing generation, and its rinnai.ca pages are orphaned and unlinked; the rinnai.ca discontinued-product notice applies and the current Canadian line is the IP-coded I-Series+.
Why does the M090SN maximum input show 'N (maximum)'?
The solo page's maximum-input hero bullet prints 'N (maximum)', a truncated value common to every legacy M-Series solo page, and the unit is heating-only (its DHW flow row prints N/A).
Where does an M-Series owner find the manuals for this model?
The orphaned rinnai.ca product-detail page for the code (for example /residential/product-detail/m160cn) still serves the M-Series I&O manual, conversion manuals, spec sheets and an AHRI certificate.
Questions about the Rinnai M090SN?
Describe what the boiler is doing and get a straight answer about the next step.
On-site service in Greater Vancouver, BC. ROMA lists “Open 7 days” on its site; call to confirm same-day availability.
Compare and explore
Sources and verification
- Rinnai Canada — M090SN product page (orphaned legacy page) · accessed September 9, 2026
- Rinnai Canada — discontinued product notice · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.