Crown Phantom II PHTM2120H

The Crown Phantom II PHTM2120H fires 13.6 to 120 MBH at 95.0% AFUE with 112 MBH DOE heating capacity and a 97 MBH net AHRI rating, keeping the same 16.3 × 17.8 × 29.8 inch cabinet as the 2080H at 112 lb shipping.

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Key figures

Max input: 120 MBH
Max CSA output: —
AFUE: 95 %
Min input: 13.6 MBH

Natural gasPropaneHeating-onlyresidential

Input is gas energy consumed; output is heat delivered. Never size from input alone.

Crown Phantom II PHTM2120H in practice

The PHTM2120H is the second Phantom II heat-only size: 13.6–120 MBH input for 112 MBH DOE heating capacity and a 97 MBH net AHRI water rating at 95.0% AFUE (product ratings table; I&O manual 110332-07, 9/25). It shares the family's stainless steel condensing design, direct spark ignition, gas-adaptive 'PHTM II' control with rate-based reset, and 10:1 modulation.

At 112 lb shipping it holds 0.75 gal of water in the same 16.3 × 17.8 × 29.8 inch cabinet as the 2080H, connecting on 1" sweat supply/return with 1/2" MPT gas at 50 psig MAWP. Venting is 2" to 70 ft or 3" with increaser to 135 ft maximum equivalent; electrical draw is 1.8 A at 120 VAC. Sizing follows a heat-loss calculation — the 13.6 MBH minimum fire is the number to check against a low-load home's shoulder-season demand.

Best suited to

Detached homes whose heat-loss calculation exceeds the 2080H's 80 MBH ceiling
Projects pairing the boiler with an indirect tank that adds recovery demand
Mechanical rooms where the small-cabinet Phantom II fits but 120 MBH of headroom is needed

Applicability and support

Model number: PHTM2120H
Canadian availability: unknown
Production status: current
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.

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Specifications

Published specifications

Values as published by Crown Boiler Co.. Units are shown with every value; notes flag conflicting sources or missing figures.

Crown Phantom II PHTM2120H specifications
Specification	Value	Note
Input
Input, minimum	13.6 MBH	Minimum input per the space-heating ratings table (product page; Table 3-1).
Input, maximum	120 MBH	Maximum input per the space-heating ratings table (product page; Table 3-1).
Output
DOE heating capacity	112 MBH	DOE heating capacity per the product ratings table.
Net AHRI water rating	97 MBH	Net AHRI water rating based on a piping and pickup allowance of 1.15, per the product ratings table.
Efficiency
Efficiency (AFUE)	95 %	95.0% AFUE per the product ratings table.
Domestic hot water
Domestic hot water	Heating-only boiler — domestic hot water comes from a separate indirect tank or water heater
Venting and air
Max. equivalent vent length, 2"	70 ft	2" standard venting, 2.5 ft minimum; derated 6–9% at maximum length. See I&O manual Table 3-3.
Max. equivalent vent length, 3"	135 ft	3" venting with increaser, 2.5 ft minimum; derated 1–5% at maximum length. See I&O manual Table 3-3.
Physical and connections
Boiler water content	0.75 gal	Water content per the I&O manual specifications.
Shipping weight	112 lb	Approximate shipping weight per the product ratings table.
Dimensions (D × W × H)	16.3" × 17.8" × 29.8"	Depth × width × height per the product dimensions table and the I&O manual (Table 3-2).
Heating water connections	1" sweat	Supply and return 1" sweat per the product page and I&O manual (Table 3-2).
Gas connection	1/2" MPT	Gas connection 1/2" MPT per the product page.
Electrical
Electrical	120 VAC, 60 Hz, 1-phase, 1.8 A	Boiler and pump draw per the I&O manual electrical requirements.
Operating limits and other
Turndown ratio	10:1	Product-page copy: modulating burner with 10:1 turndown ratio.
Maximum allowable working pressure (MAWP)	50 psig	50 psig maximum allowable working pressure per the I&O manual (Table 3-2).
Control	Gas-adaptive 'PHTM II' control with rate-based temperature reset	Rate-based reset needs no outdoor sensor; PAT gas-adaptive technology; H/E-code diagnostics per the I&O manual.
Fuel	Natural gas or LP	Ships as a natural gas boiler, field convertible to LP with no conversion kit required (product page). NG inlet 2.5–14" w.c.; LP inlet 8–14" w.c.

Manuals

Phantom II Heat Only Installation, Operating & Service Instructions (Doc 110332-07, 9/25)110332-07 · 2025-09

Alerts documented for this model

Services

Related parts & service

Frequently asked questions

What are the PHTM2120H's ratings?

13.6–120 MBH input, 112 MBH DOE heating capacity, a 97 MBH net AHRI water rating and 95.0% AFUE per the product ratings table.

Does the PHTM2120H vent the same as the 2080H?

Yes — 2" standard to 70 ft or 3" with increaser to 135 ft maximum equivalent (2.5 ft minimum).

How does the PHTM2120H compare with the PHTM2080H?

Input rises from 8–80 to 13.6–120 MBH, DOE capacity from 75 to 112 MBH and net AHRI from 65 to 97 MBH; the cabinet is the same 16.3 × 17.8 × 29.8 inch size and shipping weight grows from 107 to 112 lb.

Questions about the Crown Phantom II PHTM2120H?

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.

Call 778-909-5731 Request service

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Sources and verification

Velocity Boiler Works — Phantom II Heat Only product page · accessed September 8, 2026
Phantom II Heat Only Installation, Operating & Service Instructions, Doc 110332-07 (9/25) (PDF) · 110332-07 · accessed September 8, 2026

Facts checked September 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.