AERCO KC1000
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.
Key figures
- Max input
- 1,000 MBH
- Max CSA output
- —
- AFUE
- —
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
AERCO KC1000 in practice
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, for multiple-boiler or combination domestic water/space heating plants, and available in natural gas and propane with an optional low NOx burner and dual-fuel (natural gas/propane) support.
The page states the condensing heat exchanger design is built to withstand 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. Control is the C-More panel with EMS integration and remote access.
Boilers.ca could not retrieve the KC Boiler Tech Data Sheet (the old AERCO document server is no longer online), and the current AERCO product tree no longer lists KC boilers, so the model is recorded from the archived official product page and the live C-More manual (OMM-0032) that covers 'KC Boilers & Water Heaters'. productStatus is left unknown rather than claiming a discontinuation AERCO has not printed. No official Canadian-sales statement was found.
Best suited to
- Owners documenting an installed KC1000 against AERCO's archived official page
- Service planning for C-More controls on legacy KC equipment
- Legacy replacement research in the 1,000 MBH condensing class
Applicability and support
- Model number
- KC1000
- Canadian availability
- unknown
- Production status
- unknown
- 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 AERCO (Watts). Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Capacity, as described | 1,000 MBH | The archived official KC1000 Boiler page describes 'each 1 million BTU/hr. unit'; no separate rating-table row was retrievable this session, so output is not printed. |
| Efficiency | ||
| Thermal efficiency (up to) | 95 % | 'up to 95% thermal efficiency' as printed on the archived official KC1000 Boiler product page. |
| Physical and connections | ||
| Footprint width | 22 in | Footprint printed as 78"H x 22"W x 57"D on the archived official product page. |
| Footprint depth | 57 in | Footprint printed as 78"H x 22"W x 57"D on the archived official product page. |
| Footprint height | 78 in | Footprint printed as 78"H x 22"W x 57"D on the archived official product page. |
| Heat exchanger | Condensing, thermal-shock resistant design | The archived official product page states the condensing heat exchanger design is built to withstand thermal shock. |
| Operating limits and other | ||
| Turndown (natural gas) | 20:1 | 'The forced draft, modulating burner operates with 20:1 turndown (natural gas)' per the archived official product page. |
| Control | C-More control panel; EMS integration and remote access | The archived official product page describes advanced control software with EMS integration; the live C-More manual (OMM-0032) covers KC Boilers & Water Heaters, KC1000 Series. |
| Temperature control | ±2°F | The archived official product page states accurate temperature control to within ±2°F. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the KC1000's ratings?
AERCO's archived official page describes each unit at 1 million BTU/hr with 20:1 turndown (natural gas), up to 95% thermal efficiency and ±2°F temperature control. A separate rating-table PDF was not retrievable this session, so output is not printed.
Is the KC1000 condensing?
Yes — the archived official page describes a condensing heat exchanger design built to withstand thermal shock.
Is the KC1000 still sold?
AERCO's current product tree no longer lists KC boilers (it keeps a KC-1000 maintenance-kits resource); Boilers.ca records productStatus as unknown rather than claiming a discontinuation AERCO has not printed.
Questions about the AERCO KC1000?
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.
Compare and explore
Sources and verification
- AERCO — KC1000 Boiler product page (archived official copy 2008-12-01) · accessed September 9, 2026
- AERCO C-More Controller for Benchmark, Innovation & KC — User Manual, OMM-0032 (GF-112) (PDF) · OMM-0032 · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.