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Lochinvar · Series
The Power-Fin is Lochinvar's non-condensing copper-tube vertical commercial boiler, listed on the current Commercial Boilers page: seven M9 models from 500,000 to 2,000,000 BTU/hr at 84% thermal efficiency and five large models from 2,500,000 to 4,999,000 BTU/hr at 87%, all with 5:1 turndown and the SMART TOUCH control.
Series facts
The Power-fin is the copper-tube vertical half of Lochinvar's commercial non-condensing line, listed on the current Commercial Boilers page beside the Copper-fin family. The I&O ratings table covers the M9-firing models PBN0502-M9 through PBN2001-M9 at 100-440 MBH minimum and 500-2,000 MBH maximum inputs, and the PBXT-Sub-07 submittal adds the large models PBN2500 through PBN5000 at 2,500,000-4,999,000 BTU/hr input with 2,175,000-4,349,000 BTU/hr gross output and 87.0% AHRI thermal efficiency. Every size is an ASME copper-finned tube, gasketless heat exchanger at 160 psi working pressure, fired by a modulating burner with 5:1 turndown.
The product page for the PBN2001-M9 prints 2,000,000 BTU/hr input, 5:1 turndown, 84% thermal efficiency, the SMART TOUCH LCD display, CON·X·US remote connect, a built-in cascading sequencer for up to eight boilers, outdoor-installation readiness and a 10-year limited warranty; the page copy states thermal efficiencies of up to 87%. The I&O notes that Power-fin boilers require special gas venting (Category II or IV, AL29-4C stainless steel) and that standard boilers operate from sea level to 4,500 ft with a 4.5% derate per 1,000 ft, while high-altitude builds cover 3,000-5,500 ft. Fuel codes split natural gas (N) and propane (L) with no LP deration, and Lochinvar's Canada English pages carry the same line.
Highlights
The Power-Fin product page prints a 10-year limited warranty, and the commercial warranty sheet linked from the page (WAR7002) covers the heat exchanger and parts for installations in the United States or Canada.
Models
One canonical page per model with input, output and efficiency kept separate.
Lochinvar
The Lochinvar Power-fin PBN0502-M9 is a non-condensing copper-tube vertical commercial boiler rated 100-500 MBH input, 425 MBH gross output and a 370 MBH net AHRI water rating at 85% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN0752-M9 is a non-condensing copper-tube vertical commercial boiler rated 150-750 MBH input, 638 MBH gross output and a 554 MBH net AHRI water rating at 85% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN1002-M9 is a non-condensing copper-tube vertical commercial boiler rated 199.8-999 MBH input, 849 MBH gross output and a 739 MBH net AHRI water rating at 85% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN1302-M9 is a non-condensing copper-tube vertical commercial boiler rated 260-1,300 MBH input, 1,105 MBH gross output and a 961 MBH net AHRI water rating at 85% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN1501-M9 is a non-condensing copper-tube vertical commercial boiler rated 300-1,500 MBH input, 1,275 MBH gross output and a 1,109 MBH net AHRI water rating at 84% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN1701-M9 is a non-condensing copper-tube vertical commercial boiler rated 340-1,700 MBH input, 1,445 MBH gross output and a 1,257 MBH net AHRI water rating at 84% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN2001-M9 is a non-condensing copper-tube vertical commercial boiler rated 440-2,000 MBH input, 1,700 MBH gross output and a 1,478 MBH net AHRI water rating at 84% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN2500 is a non-condensing copper-tube vertical commercial boiler rated 2,500 BTU/hr input, 2,175 MBH gross output and a 1,891 MBH net AHRI water rating at 87% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN3000 is a non-condensing copper-tube vertical commercial boiler rated 3,000 BTU/hr input, 2,610 MBH gross output and a 2,270 MBH net AHRI water rating at 87% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN3500 is a non-condensing copper-tube vertical commercial boiler rated 3,500 BTU/hr input, 3,045 MBH gross output and a 2,648 MBH net AHRI water rating at 87% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN4000 is a non-condensing copper-tube vertical commercial boiler rated 4,000 BTU/hr input, 3,480 MBH gross output and a 3,026 MBH net AHRI water rating at 87% thermal efficiency.
Lochinvar
The Lochinvar Power-fin PBN5000 is a non-condensing copper-tube vertical commercial boiler rated 4,999 BTU/hr input, 4,349 MBH gross output and a 3,782 MBH net AHRI water rating at 87% thermal efficiency.
| Specification | Lochinvar Power-fin PBN0502-M9 | Lochinvar Power-fin PBN0752-M9 | Lochinvar Power-fin PBN1002-M9 | Lochinvar Power-fin PBN1302-M9 | Lochinvar Power-fin PBN1501-M9 | Lochinvar Power-fin PBN1701-M9 | Lochinvar Power-fin PBN2001-M9 | Lochinvar Power-fin PBN2500 | Lochinvar Power-fin PBN3000 | Lochinvar Power-fin PBN3500 | Lochinvar Power-fin PBN4000 | Lochinvar Power-fin PBN5000 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Heating input, minimum | 100 MBH | 150 MBH | 199.8 MBH | 260 MBH | 300 MBH | 340 MBH | 440 MBH | — | — | — | — | — |
| Heating input, maximum | 500 MBH | 750 MBH | 999 MBH | 1,300 MBH | 1,500 MBH | 1,700 MBH | 2,000 MBH | 2,500 MBH | 3,000 MBH | 3,500 MBH | 4,000 MBH | 4,999 MBH |
| output-max | — | — | — | — | — | — | — | — | — | — | — | — |
| afue | — | — | — | — | — | — | — | — | — | — | — | — |
| Turndown | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 | 5:1 |
| vent-max-3 | — | — | — | — | — | — | — | — | — | — | — | — |
| vent-max-2 | — | — | — | — | — | — | — | — | — | — | — | — |
| Shipping weight | — | — | — | — | — | — | — | 1,470 lb | 1,550 lb | 1,696 lb | 1,841 lb | 2,152 lb |
Read the full comparison: Lochinvar Power-fin PBN0502-M9 vs PBN0752-M9 →
Read the full comparison: Lochinvar Power-fin PBN1302-M9 vs PBN1501-M9 →
Read the full comparison: Lochinvar Power-fin PBN2500 vs PBN3000 →
Read the full comparison: Lochinvar Power-fin PBN0752-M9 vs PBN1002-M9 →
Error codes and alerts
No alerts documented for this series yet.
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 Lochinvar boilers
The M9 ratings table covers seven sizes from PBN0502-M9 (500,000 BTU/hr) to PBN2001-M9 (2,000,000 BTU/hr), and the PBXT-Sub-07 submittal adds the large models PBN2500 through PBN5000 at 2,500,000-4,999,000 BTU/hr input.
No. Lochinvar lists Power-fin under Commercial Non-Condensing Gas-Fired Boilers. It is an ASME copper-finned tube boiler with 84% thermal efficiency on the M9 product page and 87.0% on the 2500-5000 submittal, using Category II or IV special gas venting.
The product page prints a 5:1 turndown ratio for the PBN2001-M9, and the 2,500-5,000 models modulate on the same 5:1 basis per the submittal and product summary.
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
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.