New Yorker CG-F CG70F
The New Yorker CG-F CG70F is the first size with a 3/4-inch gas valve and 7-inch vent: 210 MBH input with 176 MBH DOE heating capacity and a 153 MBH net AHRI water rating at 84.0% AFUE, chimney vented in 7".
Key figures
- Max input
- 210 MBH
- Max CSA output
- —
- AFUE
- 84 %
- Min input
- —
Input is gas energy consumed; output is heat delivered. Never size from input alone.
New Yorker CG-F CG70F in practice
The CG-F CG70F is a cast-iron, chimney-vented gas water boiler rated at 210 MBH input. Its row in the CG-F specification table prints 176 MBH DOE heating capacity and a 153 MBH net AHRI water rating (1.15 piping and pickup allowance) at 84.0% AFUE, with a 7" vent, a 25"-wide cabinet and an approximate shipping weight of 462 lb.
Standard equipment includes an insulated steel jacket, integral draft diverter, damper and connector, an integrated boiler control with three-digit status readout and the energy-saving thermal purge, an integral LWCO, a step-opening redundant gas valve, spark ignition with continuous retry, a circulator and a resettable blocked vent switch. Supply and return connections are 1-1/4 inches with a 3/4" gas valve, and the boilers ship with a 30 PSI relief valve at 50 PSI MAWP.
Boilers.ca documents this size at model level from the specification sheet. Gas, venting and electrical work belongs with a licensed contractor. No official Canadian-sales statement was found, so canadianStatus stays 'unknown'.
Best suited to
- 210 MBH residential heat-loss loads
- Replacement installations with an existing chimney
- Owners wanting the thermal purge and integral LWCO in the base control
Applicability and support
- Model number
- CG70F
- Canadian availability
- unknown
- Production status
- current
- ROMA supplies
- Confirmed at consultation
- ROMA services
- Confirmed at consultation
- Warranty
- Series terms
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 New Yorker Boiler. Units are shown with every value; notes flag conflicting sources or missing figures.
| Specification | Value | Note |
|---|---|---|
| Input | ||
| Input | 210 MBH | Input per the CG-F specification table (certified to 2,000 ft; ratings decrease 2.5% per 1,000 ft above that, altitude kits required above 5,400 ft). |
| Output | ||
| DOE heating capacity | 176 MBH | DOE heating capacity per the CG-F specification table. |
| Net AHRI water rating | 153 MBH | Net AHRI water rating per the CG-F specification table, based on a piping and pickup allowance of 1.15. |
| Efficiency | ||
| Efficiency (AFUE) | 84 % | 84.0% AFUE per the CG-F specification table; the page headline is 84% AFUE. |
| Domestic hot water | ||
| Domestic hot water | Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater | |
| Venting and air | ||
| Vent diameter | 7" | Vent diameter per the CG-F specification table; the boiler is chimney vented with an integral draft diverter, damper and connector included. |
| Venting | Chimney vented with integral draft diverter | Integral draft diverter, damper and connector included; resettable blocked vent switch standard. |
| Physical and connections | ||
| Approx. shipping weight | 462 lb | Approximate shipping weight per the CG-F specification table. |
| Dimensions (width × height × depth) | 25" × 40" × 32" | CG-F dimension table values; height and depth are common across the line. |
| Supply/return connections | 1-1/4" supply and 1-1/4" return | Water connection sizes per the CG-F specification table. |
| Gas valve connection | 3/4" | Gas valve connection per the CG-F specification table. |
| Operating limits and other | ||
| Control | Integrated boiler control with thermal purge and integral LWCO | Integrated control with user-friendly interface, energy-saving thermal purge, integral LWCO (IDL-1200) and an additional pump relay per the specification sheet. |
| Fuel | Natural gas ('N' suffix) or LP gas ('L' suffix) | Add suffix 'N' for natural gas or 'L' for LP gas models per the CG-F specification table note. |
Manuals
Alerts documented for this model
None documented yet.
Frequently asked questions
What are the CG-F CG70F's ratings?
210 MBH input, 176 MBH DOE heating capacity, a 153 MBH net AHRI water rating and 84.0% AFUE with a 7" vent per the CG-F specification table.
Does the CG-F CG70F need a chimney?
Yes — the CG-F is chimney vented with an integral draft diverter, damper and connector; this size lists a 7" vent diameter.
Questions about the New Yorker CG-F CG70F?
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
- New Yorker Boiler — CG-F Water Series Boiler product page · accessed September 9, 2026
- CG-F Product Specifications (PDF) · accessed September 9, 2026
Facts checked September 9, 2026. Last updated September 9, 2026. Technical reviewer: not yet assigned.