Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
Both the Camus Dynaforce DR300 and the Camus Dynaforce DR350 belong to the Camus Hydronics Dynaforce Series line of condensing boilers. The Camus Dynaforce DR300 is documented at 300 MBTU/hr input, 282 MBTU/hr output and 99% efficiency, while the Camus Dynaforce DR350 is documented at 350 MBTU/hr input, 329 MBTU/hr output and 99% efficiency. Camus Dynaforce DR350 lists 50 MBTU/hr more input than Camus Dynaforce DR300 (350 MBTU/hr against 300 MBTU/hr). Both list the same published efficiency of 99%. Both list the same published shipping weight of 500 lb.
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Camus Dynaforce DR300 | Camus Dynaforce DR350 |
|---|---|---|
| Input, maximum | 300 MBTU/hr | 350 MBTU/hr |
| Output, maximum | 282 MBTU/hr | 329 MBTU/hr |
| Turndown ratio | 5:1 | 5:1 |
| Heat-exchanger water content | 5.7 US gal | 5.7 US gal |
| Weight | 500 lb | 500 lb |
| Venting | Category II or IV (SS / AL29-4C, PPE / polypropylene; PVC and CPVC for select systems — consult factory) | Category II or IV (SS / AL29-4C, PPE / polypropylene; PVC and CPVC for select systems — consult factory) |
| Water connections | 1 1/2" NPT | 1 1/2" NPT |
| Gas connection | 3/4" NPT | 3/4" NPT |
| Electrical requirement | 120 VAC, 60 Hz — 20 A max (boiler only) | 120 VAC, 60 Hz — 20 A max (boiler only) |
| Ignition | Direct igniter, 3 ignition tries then lockout | Direct igniter, 3 ignition tries then lockout |
| Modulation drive | Pulse-width modulation (DR300–DR1000) | Pulse-width modulation (DR300–DR1000) |
| Efficiency | 99 % | 99 % |
| Max. working pressure | 160 psig | 160 psig |
| System return temperature | 40 °F | 40 °F |
| Heat exchanger | 439 SS welded 12-pass watertube, 316L waterways | 439 SS welded 12-pass watertube, 316L waterways |
| Control | Honeywell SOLA touchscreen; Modbus RTU; cascade up to 8 | Honeywell SOLA touchscreen; Modbus RTU; cascade up to 8 |
| Certification | CSA (ANSI Z21.13 / CSA 4.9); ASHRAE 90.1 | CSA (ANSI Z21.13 / CSA 4.9); ASHRAE 90.1 |
Published ratings: the Camus Dynaforce DR300 is rated 300 MBTU/hr input, 282 MBTU/hr output and 99% efficiency; the Camus Dynaforce DR350 is rated 350 MBTU/hr input, 329 MBTU/hr output and 99% efficiency. Camus Dynaforce DR350 lists 50 MBTU/hr more input than Camus Dynaforce DR300 (350 MBTU/hr against 300 MBTU/hr). Both list the same published efficiency of 99%.
Both records print the same turndown (5:1), boiler water content (5.7 US gal), shipping weight (500 lb) and venting (Category II or IV (SS / AL29-4C, PPE / polypropylene; PVC and CPVC for select systems — consult factory)), per the cited sources.
Camus Hydronics
The Camus Dynaforce DR300 is the 300 MBH hydronic-heating size of Camus' fully condensing watertube line: 300 MBTU/hr input, 282 MBTU/hr output, up to 99% thermal efficiency and 5:1 turndown on the Honeywell SOLA control.
Camus Hydronics
The Camus Dynaforce DR350 is the 350 MBH hydronic-heating size of Camus' fully condensing watertube line: 350 MBTU/hr input, 329 MBTU/hr output, up to 99% thermal efficiency and 5:1 turndown on the Honeywell SOLA control.
The Camus Dynaforce DR350 lists 350 MBTU/hr, against 300 MBTU/hr on the Camus Dynaforce DR300, per the cited documentation.
Both list the same efficiency of 99%.
A consultation includes a heat-loss review so the size is right the first time.
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.