Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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AERCO (Watts) · Series
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.
Series facts
'up to 95% thermal efficiency' as printed on the archived official KC1000 Boiler product page.
AERCO's archived official KC1000 Boiler page describes the line as 'the first high-efficiency, commercial, gas-fired, hydronic boiler introduced in the US', performance-proven for more than 18 years and intended for multiple-boiler or combination domestic water/space heating plants, available in natural gas and propane with an optional low NOx burner and dual-fuel support.
The page states the condensing heat exchanger design withstands thermal shock and eliminates the need for boiler pumping equipment; the forced-draft modulating burner operates with 20:1 turndown (natural gas) to deliver up to 95% thermal efficiency; each 1 million BTU/hr unit controls temperature to within ±2°F and occupies a 78"H × 22"W × 57"D footprint. Controls are the C-More panel with EMS integration and remote access.
AERCO's current product tree no longer lists KC boilers, and the KC Boiler Tech Data Sheet from the old document server is no longer online, so productStatus is left unknown rather than claiming a discontinuation AERCO has not printed. The live OMM-0032 manual still covers 'KC Boilers & Water Heaters, KC1000 Series'. No official Canadian-sales statement was found.
Highlights
Models
One canonical page per model with input, output and efficiency kept separate.
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.
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 AERCO (Watts) boilers
AERCO's archived official page describes the KC1000 as the first high-efficiency commercial gas-fired hydronic boiler introduced in the US, with a condensing heat exchanger, 20:1 turndown (natural gas) and up to 95% thermal efficiency.
The live OMM-0032 manual covers KC Boilers & Water Heaters, KC1000 Series, and AERCO's current site keeps a KC-1000 maintenance-kits resource; the current product tree no longer lists KC boilers.
The C-More control panel, covered by the live OMM-0032 (GF-112) manual that applies to Benchmark boilers, Innovation water heaters and KC boilers & water heaters.
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.