Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Brand hub
AERCO International, Inc. is an American commercial boiler and water-heater manufacturer — part of the Watts Water Technologies family and founded in Blauvelt, NY — known for the condensing Benchmark, Innovation, Modulex EXT and AM Series lines and the legacy KC1000 boiler, all used in commercial and institutional plants.
At a glance
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.
AERCO International, Inc. is a Watts Water Technologies brand that was founded in Blauvelt, New York. Its current product tree (aerco.com, as captured on the official pages for this research) lists condensing hydronic boilers — Benchmark, Modulex EXT, AM Series boilers and the MFC multi-fuel condensing boiler — plus electric equipment (Benchmark-E and Sequoia electrode boilers), water heaters (including the Innovation commercial tankless line) and accessories.
The documented lines on Boilers.ca are the Benchmark (nine BMK condensing firetube sizes, 750–6000 MBH), the AM Series (399–1000 MBH modular 'pre-packaged boiler plant' enclosures), the Modulex EXT (eight MLX EXT multi-module outdoor-ready condensing sizes, 450–3000 MBH), the Innovation commercial tankless water heater (four INN sizes, 625–1350 MBH, documented as DHW-only) and the legacy KC1000 condensing boiler (1 million BTU/hr class). Benchmark-E and Sequoia are electric, so they are mentioned here for context and are not gas boiler hubs.
AERCO's HTML pages returned Cloudflare 403 responses to this research network on 2026-09-09, but the official PDF document system (aerco.com/dfsmedia) responded normally: model specs come from the live official technical data sheets and manuals. Product-page wording for the Benchmark, Modulex EXT, AM Series and KC lines comes from official Wayback captures of aerco.com. No official per-product Canadian availability statement was found, so canadianStatus is recorded as unknown; AERCO's site offers sales-representative and service-technician locators. Boilers.ca does not claim Canadian stock or availability for AERCO.
Series
Each series hub lists its models, verified specifications, manuals and documented alerts.
The AERCO Benchmark is the company's condensing gas-fired firetube boiler line from 750 to 6000 MBH — a 439 stainless-steel heat exchanger with 'only two moving parts', up to 20:1 turndown depending on capacity, 87%–98% efficiency range and boiler sequencing for up to 16 boilers, documented here in nine BMK rating-table sizes.
The AERCO AM Series is a condensing 'pre-packaged boiler plant': two to four individual condensing modules inside a single enclosure (each with its own combustion chamber, burner, gas valve and safeties), available in 399, 500, 750 and 1000 MBH with efficiencies up to 98%.
The AERCO Modulex EXT is a condensing, fully modulating multi-module boiler (independent thermal modules) available in eight MLX EXT sizes from 450 to 3000 MBH, with low NOx (under 20 ppm), an outdoor-ready standard enclosure, whisper-quiet operation and the Ufly colour-touchscreen control.
The AERCO Innovation is a commercial condensing tankless water-heater line in four sizes — INN 600N, 800N, 1060N and 1350N — with certified efficiencies from 93% to 96%, turndown up to 27:1, the AERguard stainless-steel helical firetube heat exchanger and the Edge controller with sequencing for up to 16 units.
The AERCO KC is the company's legacy 1,000 MBH-class condensing gas-fired commercial boiler line — described by AERCO as the first high-efficiency commercial gas-fired hydronic boiler introduced in the US — with 20:1 turndown (natural gas), up to 95% thermal efficiency and the C-More control panel.
Models
AERCO (Watts)
The AERCO Benchmark 750 (BMK 750) is a condensing gas-fired firetube commercial boiler rated 750 MBH maximum input and a 653–720 MBH output range in AERCO's published ratings table, at 95.6% thermal efficiency (87%–98% range), with 15:1 (7%) turndown and a 669 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 1000 (BMK 1000) is a condensing gas-fired firetube commercial boiler rated 1000 MBH maximum input and a 870–960 MBH output range in AERCO's published ratings table, at 96.8% thermal efficiency (87%–98% range), with 20:1 (5%) turndown and a 700 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 1500 (BMK 1500) is a condensing gas-fired firetube commercial boiler rated 1500 MBH maximum input and a 1305–1440 MBH output range in AERCO's published ratings table, at 94.6% thermal efficiency (87%–98% range), with 20:1 (5%) turndown and a 1406 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 2000 (BMK 2000) is a condensing gas-fired firetube commercial boiler rated 2000 MBH maximum input and a 1740–1920 MBH output range in AERCO's published ratings table, at 94.6% thermal efficiency (87%–98% range), with 20:1 (5%) turndown and a 1500 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 2500 (BMK 2500) is a condensing gas-fired firetube commercial boiler rated 2500 MBH maximum input and a 2175–2400 MBH output range in AERCO's published ratings table, at 93.5% thermal efficiency (87%–98% range), with 15:1 (7%) turndown and a 2000 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 3000 (BMK 3000) is a condensing gas-fired firetube commercial boiler rated 3000 MBH maximum input and a 2610–2880 MBH output range in AERCO's published ratings table, at 94.6% thermal efficiency (87%–98% range), with 15:1 (7%) turndown and a 2170 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 4000 (BMK 4000) is a condensing gas-fired firetube commercial boiler rated 4000 MBH maximum input and a 3480–3840 MBH output range in AERCO's published ratings table, at 94.1% thermal efficiency (87%–98% range), with 15:1 (7%) turndown and a 2200 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 5000 (BMK 5000) is a condensing gas-fired firetube commercial boiler rated 5000 MBH maximum input and a 4350–4800 MBH output range in AERCO's published ratings table, at 94.8% thermal efficiency (87%–98% range), with 12:1 (8%) turndown and a 3000 lb dry weight.
AERCO (Watts)
The AERCO Benchmark 6000 (BMK 6000) is a condensing gas-fired firetube commercial boiler rated 6000 MBH maximum input and a 5220–5760 MBH output range in AERCO's published ratings table, at 94.5% thermal efficiency (87%–98% range), with 15:1 (7%) turndown and a 3000 lb dry weight.
AERCO (Watts)
The AERCO Innovation INN 600N is a gas-fired condensing commercial tankless water heater rated 625 MBH input with 93% certified efficiency (DOE 10 CFR Part 431) and up to 12:1 turndown in AERCO's published TDS.
AERCO (Watts)
The AERCO Innovation INN 800N is a gas-fired condensing commercial tankless water heater rated 800 MBH input with 94% certified efficiency (DOE 10 CFR Part 431) and up to 16:1 turndown in AERCO's published TDS.
AERCO (Watts)
The AERCO Innovation INN 1060N is a gas-fired condensing commercial tankless water heater rated 1060 MBH input with 95% certified efficiency (DOE 10 CFR Part 431) and up to 21:1 turndown in AERCO's published TDS.
AERCO (Watts)
The AERCO Innovation INN 1350N is a gas-fired condensing commercial tankless water heater rated 1350 MBH input with 96% certified efficiency (DOE 10 CFR Part 431) and up to 27:1 turndown in AERCO's published TDS.
AERCO (Watts)
The AERCO Modulex EXT MLX 450 is a condensing multi-module commercial boiler rated 481.5 MBH maximum input and a 422,000–457,000 BTU/hr output range in AERCO's published ratings table, with 10.5:1 turndown across 3 independent thermal modules and a 454 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 600 is a condensing multi-module commercial boiler rated 642 MBH maximum input and a 564,000–609,000 BTU/hr output range in AERCO's published ratings table, with 14:1 turndown across 4 independent thermal modules and a 568 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 800 is a condensing multi-module commercial boiler rated 802.5 MBH maximum input and a 707,000–762,000 BTU/hr output range in AERCO's published ratings table, with 17.5:1 turndown across 5 independent thermal modules and a 634 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 1100 is a condensing multi-module commercial boiler rated 1123.5 MBH maximum input and a 993,000–1,067,000 BTU/hr output range in AERCO's published ratings table, with 24.5:1 turndown across 7 independent thermal modules and a 826 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 1500 is a condensing multi-module commercial boiler rated 1530 MBH maximum input and a 1,334,000–1,476,000 BTU/hr output range in AERCO's published ratings table, with 19.6:1 turndown across 4 independent thermal modules and a 1137 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 2300 is a condensing multi-module commercial boiler rated 2295 MBH maximum input and a 2,001,000–2,215,000 BTU/hr output range in AERCO's published ratings table, with 29:1 turndown across 6 independent thermal modules and a 1384 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 2600 is a condensing multi-module commercial boiler rated 2677 MBH maximum input and a 2,334,000–2,583,000 BTU/hr output range in AERCO's published ratings table, with 34:1 turndown across 7 independent thermal modules and a 1549 lb wet weight.
AERCO (Watts)
The AERCO Modulex EXT MLX 3000 is a condensing multi-module commercial boiler rated 3060 MBH maximum input and a 2,668,000–2,951,000 BTU/hr output range in AERCO's published ratings table, with 39:1 turndown across 8 independent thermal modules and a 1664 lb wet weight.
AERCO (Watts)
The AERCO KC1000 is the company's legacy 1 million BTU/hr condensing gas-fired commercial boiler — the first high-efficiency commercial gas-fired hydronic boiler introduced in the US per AERCO's archived official page — with 20:1 turndown (natural gas), up to 95% thermal efficiency, ±2°F control and a 78"H × 22"W × 57"D footprint.
Services
On-site service in Greater Vancouver. Brand and model context is kept when you request service.
Error codes and alerts
Documented meanings resolved against the specific series, controller and manual version. A code is not a diagnosis.
Manuals and documents
Links go to the manufacturer's own documents. Boilers.ca does not reproduce manuals.
No official Canadian availability statement was found on the captured AERCO pages. AERCO International, Inc. is a Watts Water Technologies brand founded in Blauvelt, New York; its site provides rep and service locators rather than per-country product statements.
Yes. The captured AERCO pages present AERCO as part of the Watts family of brands (Watts Water Technologies), and corporate links on the captured pages point to wattswater.com investor content.
The gas boiler and water-heater lines with published rating tables: Benchmark (750–6000 MBH), AM Series (399–1000 MBH), Modulex EXT (450–3000 MBH), the Innovation DHW-only line (625–1350 MBH) and the legacy KC1000. Benchmark-E and Sequoia are electric and are not gas boiler hubs.
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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.