Canada-wide gas boiler information · On-site service in Greater Vancouver, BC
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Comparison
Verdict in brief
The B2HA-399 and B2HA-530 are the two largest Vitodens 200-W models and share the big chassis: both fire from a 113,000 BTU (33 kW) minimum, both weigh 298 lb (135 kg) in the same 23.5 x 27 x 44.5-inch cabinet. The 530 fires 131 MBH higher — 530,000 BTU (155 kW) against 399,000 BTU (117 kW) — while its printed efficiency row reads 93.5% versus the 399's 93.9% thermal efficiency (ANSI Z21,13/CSA 4.9).
Published manufacturer figures. Input and output are kept separate; blanks mean the manufacturer did not publish that value.
| Specification | Viessmann Vitodens 200-W B2HA-399 | Viessmann Vitodens 200-W B2HA-530 |
|---|---|---|
| Input, minimum (natural gas) | 113 MBH | 113 MBH |
| Input, maximum (natural gas) | 399 MBH | 530 MBH |
| Thermal efficiency (ANSI Z21,13/CSA 4.9) | 93.9 % | 93.5 % |
| Weight | 298 lb | 298 lb |
| Width | 23.5 in | 23.5 in |
| Depth | 27 in | 27 in |
| Height | 44.5 in | 44.5 in |
Physically the two boilers are the same unit: both weigh 298 lb (135 kg) and measure 23.5 x 27 x 44.5 inches (600 x 689 x 1128 mm), and both fire from a 113,000 BTU (33 kW) minimum input on natural gas. The only published differences sit at the top of the range.
Maximum input is the main differentiator: 399,000 BTU (117 kW) for the 399 against 530,000 BTU (155 kW) for the 530 — the line's single-boiler ceiling. The printed thermal-efficiency rows (ANSI Z21,13/CSA 4.9) read 93.9% for the 399 and 93.5% for the 530.
Because minimum fire is identical, the 530's extra 131 MBH costs nothing in low-load behaviour. Both models belong to a line whose marketing copy cites an 'up to 95% AFUE rating' and cascades of up to eight boilers (4240 MBH); the choice is whether the heat-loss calculation and plant load need the 530's ceiling.
Viessmann
The Vitodens 200-W B2HA-399 opens the larger B2HA chassis: 113,000 to 399,000 BTU (33 to 117 kW) of input in the 298 lb wall-hung condensing boiler, with a printed thermal-efficiency row (ANSI Z21,13/CSA 4.9) of 93.9%.
Viessmann
The Vitodens 200-W B2HA-530 is the top of Viessmann Canada's B2HA line and of the page's single-boiler range: 113,000 to 530,000 BTU (33 to 155 kW) of input in the 298 lb wall-hung condensing boiler, with a printed thermal-efficiency row (ANSI Z21,13/CSA 4.9) of 93.5%.
No. Both weigh 298 lb (135 kg) and share the 23.5 x 27 x 44.5 inch (600 x 689 x 1128 mm) cabinet; only the maximum input and the printed efficiency row differ.
Both fire from a 113,000 BTU (33 kW) minimum; the 399 tops out at 399,000 BTU (117 kW) and the 530 at 530,000 BTU (155 kW), per Viessmann Canada.
The page prints 93.5% thermal efficiency (ANSI Z21,13/CSA 4.9) for the B2HA-530 against 93.9% for the B2HA-399 — the figures as printed, separate from the page's 'up to 95% AFUE' marketing claim.
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 8, 2026. Last updated September 8, 2026. Technical reviewer: not yet assigned.