RBI Futera III 1250
The RBI Futera III 1250 is a gas-fired copper-fin commercial boiler rated 1250 MBH input and 1066 MBH boiler output in RBI's published ratings table, with 4:1 full modulation, Category I/II/IV venting and a 850 lb shipping weight.
Key figures
- Max input
- 1,250 MBH
- Max CSA output
- 1,066 MBH
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
RBI Futera III 1250 in practice
RBI's Futera III product page prints the 1250 row as 1250 MBH (366 kW) input and 1066 MBH (312 kW) boiler output, in a 44" × 29.125" × 55.5" cabinet (1118 × 740 × 1409 mm) with a 850 lb (386 kg) shipping weight.
The row lists Category I 10", Category II 8" and Category IV 6" flue options, a 10" air intake, 1 1/4" gas and 2 1/2" water connections. The Futera III is a gas-fired copper 4-pass heat exchanger (160 psi) with HEATNET 3.0 integrated controls, Modbus/LonWorks/BACnet integration and full modulation with 4:1 turndown, per the product page.
RBI rates the Futera III line at 85.6% AHRI Boiler Efficiency. Boilers.ca prints the rating-table row exactly as published and does not estimate values RBI does not print; the I&O manual (FTIII-IOM-15) and the series brochure are linked from the official literature library. No official Canadian-sales statement was found, so canadianStatus stays unknown.
Best suited to
- Commercial plants documenting an installed Futera III 1250 against RBI's rating table
- Hydronic systems in the 1250 MBH input class
- Primary/secondary piping layouts with Category II or IV venting
Applicability and support
- Model number
- MB/MW 1250
- Canadian availability
- unknown
- Production status
- current
- 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 RBI. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input, maximum | 1,250 MBH | 366 kW, as printed in the Futera III ratings table. |
| Output | ||
| Boiler output | 1,066 MBH | 312 kW boiler output, as printed in the Futera III ratings table. |
| Efficiency | ||
| Efficiency (AHRI boiler) | 85.6 % | 85.6% AHRI Boiler Efficiency is printed for the Futera III line on the product page; no per-model efficiency row is printed in the ratings table. |
| Venting and air | ||
| Flue vent | Cat I 10" / Cat II 8" / Cat IV 6" | As printed in the Futera III ratings table. |
| Air intake | 10" | As printed in the Futera III ratings table. |
| Physical and connections | ||
| Unit depth | 44 in | 1118 mm, as printed in the ratings table. |
| Unit width | 29.125 in | 740 mm, as printed in the ratings table. |
| Unit height | 55.5 in | 1409 mm, as printed in the ratings table (the source prints 1938 mm for the 1750 row). |
| Gas connection | 1 1/4" | As printed in the Futera III ratings table; connection type not printed. |
| Water connection | 2 1/2" | As printed in the Futera III ratings table; connection type not printed. |
| Shipping weight | 850 lb | 386 kg, as printed in the Futera III ratings table. |
| Operating limits and other | ||
| Turndown | 4:1 | Full modulation with 4:1 turndown printed for the Futera III line on the product page. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the Futera III 1250 ratings?
RBI's ratings table prints 1250 MBH (366 kW) input and 1066 MBH (312 kW) boiler output for the MB/MW 1250, with a 850 lb (386 kg) shipping weight.
What venting does the Futera III 1250 allow?
The rating row prints Category I 10", Category II 8" and Category IV 6" flue options; final venting design is a licensed contractor's responsibility.
Is the Futera III 1250 condensing?
RBI's product page presents the Futera III as a copper-fin line at 85.6% AHRI Boiler Efficiency; the condensing Futera offerings are the Futera Fusion and Infinite Energy² lines.
Questions about the RBI Futera III 1250?
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
- RBI — Futera III product page (ratings and dimensions table) · accessed September 9, 2026
- Futera III Installation & Operation Manual, FTIII-IOM-15 (PDF) · FTIII-IOM-15 · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.