Rinnai · i-Series (previous generation)
Rinnai i150SN
The Rinnai i150SN is a legacy Canadian I-Series heating-only solo boiler — a 150 MBH central-heating input rating per the page copy with a 15 MBH minimum fire and a truncated 'N (maximum)' bullet (page bug) — wall-hung and condensing, documented from its orphaned rinnai.ca page as discontinued history.
Key figures
- Max input
- —
- Max CSA output
- —
- AFUE
- —
- Min input
- 15 MBH
Input is gas energy consumed; output is heat delivered. Never size from input alone.
Rinnai i150SN in practice
The i150SN belongs to the previous-generation Canadian I-Series, sold under lowercase-i codes before the current IP-coded I-Series+ line — a heating-only solo with an SN (solo, natural gas) suffix. Its rinnai.ca product-detail page still returns HTTP 200 and the I-Series solo page copy describes the self-cleaning stainless-steel heat exchanger in a heat-only model that can 'deliver whole house heating'; 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 the values printed on the i150SN page's own Specifications table on 2026-09-09: 62 lb / (28 kg) product weight, 26.4 / 18.5 / 10.9 in (671/471/276 mm) H×W×D, a 3/4" MNPT gas connection, and printed Residential ENERGY STAR 'Yes' and SCAQMD 'Ultra Low NOx' rows. The page prints a Gas Type row of Natural Gas while the copy says the boiler runs on natural gas or propane — propane is a field conversion covered by the conversion manual listed on the page.
Page-print quirk kept and flagged: the solo page's maximum-input hero bullet prints 'N (maximum)' — a truncated value common to every legacy solo page — so no numeric maximum input is recorded; the page prints no DHW or recirculation rows for the heating-only unit. No AFUE percentage is printed on the orphan pages, so none is recorded here.
Best suited to
- Owners and service technicians identifying an installed i150SN against the code on its rating plate
- Service planning for a previous-generation I-Series boiler that predates the current I-Series+ literature
Applicability and support
- Model number
- i150SN
- 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 | ||
| Input rating (page copy) | 150 MBH | Page copy states the i150SN 'provides an input rating of 150K Btu'. The Specifications table prints the same figure (150,000 BTU / (44.0 kW)) under 'Central Heating Capacity' — the printed kW conversion matches an input figure, so Boilers.ca records the copy's input reading once and flags the as-printed row label. |
| Minimum input (hero bullet) | 15 MBH | 15,000 BTU (minimum), as printed on the page's hero bullet list (Natural Gas). |
| Maximum input (hero bullet, as printed) | N (maximum) — page print bug | Every legacy solo page prints its maximum-input hero bullet as 'N (maximum)' — a truncated value on the page. No numeric maximum is printed anywhere on the solo page, so Boilers.ca records the bullet as printed rather than reading 'N' as 'no maximum'. |
| Physical and connections | ||
| Product weight | 62 lb | 62 lb / (28 kg), as printed on the Specifications table. |
| Product height | 26.4 in (671 mm) | As printed on the rinnai.ca Specifications table. |
| Product width | 18.5 in (471 mm) | As printed on the rinnai.ca Specifications table. |
| Product depth | 10.9 in (276 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. |
Frequently asked questions
Is the Rinnai i150SN still sold in Canada?
No. It is a previous-generation I-Series model whose rinnai.ca page survives only as an orphaned, unlinked product page; rinnai.ca's discontinued-product notice applies and the current Canadian line is the IP-coded I-Series+.
Why does the i150SN record show 'N (maximum)' for maximum input?
The solo page's maximum-input hero bullet prints 'N (maximum)' — a truncated value on every legacy solo page — and no numeric maximum appears anywhere else on the page, so the record keeps the printed value rather than inventing a number.
What is the difference between the i150SN and an I-Series+ model?
Everything: the previous-generation I-Series used lowercase-i Canadian codes (CN combis, SN solos) and its own manuals, while the current line is the IP-coded I-Series+. Parts, manuals and error-code tables must be matched to the code on the rating plate.
Questions about the Rinnai i150SN?
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.
Sources and verification
- Rinnai Canada — i150SN 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.