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Viessmann Vitodens 100-W Heat Only Regular Boiler 11kW–32kW
£1,322.99
Taxes included.
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Pickup available at F3 Castings Way, Leafbridge, Castings Way, Lincoln
Usually ready in 24 hours
Supplied to order. Ordered in from Viessmann's UK distribution for you, usually 2–4 working days to dispatch.
Viessmann Vitodens 100-W Heat Only Regular Boiler (B1GA) 11kW–32kW
Viessmann's heat only (regular) gas condensing boiler for open-vented systems with a feed and expansion tank and hot water cylinder, or sealed systems with external components. Five outputs from 11kW to 32kW. Natural gas, LPG compatible.
- Inox-Radial stainless steel heat exchanger, MatriX-Plus burner
- Up to 98% efficiency (Hs), ErP class A (92%)
- Five outputs: 11, 16, 19, 25 and 32kW
- For open-vented or sealed systems with an external pump and controls
- Compact wall-hung casing for like-for-like regular boiler swaps
Required with this boiler: a flue kit
Viessmann boilers are supplied without a flue. The Flue kit selector above Add to cart adds the Viessmann 7946886 60/100mm horizontal flue kit by default, as a separate line in your basket.
Only choose "I already have this" if you already have a compatible Viessmann 60/100 flue, or you need a different route: see the vertical flue kit, extensions and bends. Only Viessmann flue components may be used with Vitodens boilers.
What is included
- Viessmann Vitodens 100-W Heat Only boiler (B1GA) in the selected output
- Flue not included: the horizontal flue kit is added with the selector above
- Pump, cylinder, valves and system controls are not included (regular boiler)
Sizes and prices
| Capacity | Viessmann code | Part number | Price inc VAT |
|---|---|---|---|
| 11kW | 7959994 | PLUMHEAT4513 | £1,322.99 |
| 16kW | 7959995 | PLUMHEAT4514 | £1,400.99 |
| 19kW | 7959996 | PLUMHEAT4515 | £1,429.99 |
| 25kW | 7959997 | PLUMHEAT4516 | £1,448.99 |
| 32kW | 7959998 | PLUMHEAT4517 | £1,831.99 |
Recommended add-ons
Tick these under the flue selector to add them to your order:
- Inta Trade Tec 22mm magnetic filter: protects the heat exchanger; a system filter is expected under most manufacturer guarantees.
- Hive V4 heating and hot water kit: smart dual-channel control for regular and system boiler installs.
- Viessmann plume management kit 7946889: moves the plume away from windows, doors and boundaries.
- Viessmann 60/100 flue extension 1m 7373224: for walls thicker than the standard kit.
- Viessmann 60/100 flue bends: 87° or 45° pair for offsets.
- Viessmann vertical flue kit 7373230: for roof exits (choose "I already have this" for the horizontal kit).
Installation and compliance
Installation and guarantee
Installation must be by a Gas Safe registered engineer (oil: OFTEC registered) and commissioned with the Benchmark checklist. Manufacturer guarantees require registration after installation and annual servicing; extended guarantee terms are the manufacturer's and may require their approved filter/installer.
Viessmann UK currently offers up to 12 years' guarantee on the Vitodens 100-W Heat Only when registered via ViessmannPlus (VPlus); see Viessmann's current terms.
- Natural gas as supplied; LPG operation must be set up to Viessmann's instructions by a Gas Safe engineer.
- Condensate must be routed to Building Regulations; external runs should be 32mm and insulated.
- For ViCare app control the Heat Only needs a Viessmann modem; ask us before ordering.
Delivery and collection
Delivered by pallet/courier (£29.99 per order) or collect free from Leafbridge, Lincoln. Order-in boilers usually 2-4 working days.
Viessmann Vitodens 100-W Heat Only brochure (2024) and Viessmann Vitodens flue system technical guide (8/2024) are in the PDF downloads at the bottom of this page.
Shop the Viessmann Vitodens range
- Viessmann Vitodens 050-W Combi 25–35kW
- Viessmann Vitodens 050-W System 19–25kW
- Viessmann Vitodens 100-W Combi 26–35kW
- Viessmann Vitodens 100-W System 11–32kW
- Viessmann Vitodens 025-W Combi 24–28kW
- Viessmann Vitodens 200-W System 11–32kW
Flues and accessories: horizontal flue kit, vertical flue kit, plume kit, valve covers. Browse all boilers.
PDF Downloads
Manufacturer documents for this product.
