For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 5 years whole-boiler cover when registered via VPlus. The separately advertised 10-year heat-exchanger warranty covers that component and must not be represented as 10-year whole-boiler cover. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Official Vitodens Classic / 025-W Combi product image.
Understand the range before choosing the output
Viessmann’s UK boiler directory includes several heating and hot-water arrangements. The Vitodens gas range uses stainless-steel heat exchangers; the product platform, controls, casing and water-storage arrangement distinguish the individual families.
Classic / 025-W provides simpler controls; 050-W offers a compact 300 mm deep casing; 100-W adds a connected platform; 200-W uses a touchscreen and lower minimum heating output. The 111-W and 222-F integrate storage in wall-mounted and floorstanding forms respectively. These differences do not establish suitability on their own.
Viessmann gas combi and storage-combi boilers
Manufacturer warranty optionsUp to 5 years
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 5 years whole-boiler cover when registered via VPlus. The separately advertised 10-year heat-exchanger warranty covers that component and must not be represented as 10-year whole-boiler cover. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Official Vitodens Classic / 025-W Combi product image.
Vitodens Classic / 025-W Combi
Two compact combi output choices, with straightforward LCD operation.
Fuel and arrangement: Natural gas · Combi
Output options: 24 kW | 28 kW
Key takeaway: A simpler controls platform for assessed combi replacements. Check water supply and simultaneous use; the 24/28 labels are hot-water ratings, not the heating load.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 10 years when registered through the installer portal / VPlus. The older homeowner registration table lists 7 years with a chargeable upgrade; the registration route and current eligible package must be checked. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 12 years when registered via VPlus for the eligible current 100-W package. The homeowner registration table separately describes 7 years with chargeable 10/12-year upgrades; installer route, generation and current terms decide entitlement. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 10 years when registered via VPlus for the advertised current package. Chargeable 10/12-year options appear in the homeowner table; any further extension must be confirmed for the exact model. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Official Vitodens 111-W Storage Combi product image.
Vitodens 111-W Storage Combi
Wall-mounted hot-water storage with an integrated 46-litre stainless-steel loading cylinder.
Fuel and arrangement: Natural gas · Combi
Output options: 25 kW | 32 kW
Key takeaway: Consider stored-water delivery, refill/recovery and available wall space together. The larger and heavier appliance still depends on measured incoming water supply.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
The current UK page advertises up to 10 years via VPlus; the UK guide lists an optional 12-year extension. Older registration literature describes 7 years with chargeable 10/12-year upgrades. Any extension, charge, registration route and qualifying installation must be confirmed. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
The current product page advertises 7 years via VPlus and an extension up to 12 years. The June 2026 guide shows 10 years for its package, while the older brochure uses different periods. Confirm the exact current registration package and any chargeable extension before purchase. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Official Vitodens 222-F Storage Combi product image.
Vitodens 222-F Storage Combi
Floorstanding heating and hot-water storage in a 600 mm wide appliance.
Fuel and arrangement: Natural gas · Combi
Output options: 19 kW | 25 kW | 32 kW
Key takeaway: Assess floor space, access, water hardness, recovery and household routines before choosing integrated storage. A storage capacity is not a guaranteed shower-performance figure.
A system boiler works with a separately specified hot-water cylinder. Compare the boiler, cylinder recovery and controls as a complete arrangement.
Manufacturer warranty optionsUp to 10 years
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 10 years when registered through the installer portal / VPlus. The older homeowner registration table lists 7 years with a chargeable upgrade; the registration route and current eligible package must be checked. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
A compact system arrangement with a 700 × 400 × 300 mm casing.
Fuel and arrangement: Natural gas · System
Output options: 19 kW | 25 kW
Key takeaway: The two heating options require a separately specified cylinder for hot water. Size the boiler and cylinder together rather than from bedroom count.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 12 years when registered via VPlus for the eligible current 100-W package. The homeowner registration table separately describes 7 years with chargeable 10/12-year upgrades; installer route, generation and current terms decide entitlement. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
The connected 100-W platform, specified as a boiler for a separate hot-water cylinder.
Fuel and arrangement: Natural gas · System
Output options: 11 kW | 19 kW | 25 kW | 32 kW
Key takeaway: Four heating maxima allow the design to be matched to calculated heat loss. Cylinder recovery and controls form part of the specification.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
The current UK page advertises up to 10 years via VPlus; the UK guide lists an optional 12-year extension. Older registration literature describes 7 years with chargeable 10/12-year upgrades. Any extension, charge, registration route and qualifying installation must be confirmed. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Domestic 200-W system models with a 7-inch touchscreen and integrated WiFi.
Fuel and arrangement: Natural gas · System
Output options: 11 kW | 19 kW | 25 kW | 32 kW
Key takeaway: The 11/19/25/32 kW domestic outputs are distinct from the larger commercial 200-W range. Match the minimum and maximum heating ratings to the design load.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 12 years for an eligible VPlus registration as advertised on the current UK product page. Some older product copy describes 10 years with an extension; confirm the applicable generation and registration package. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Key takeaway: Retaining a suitable cylinder-based layout can be worth assessing before conversion. Check pumps, tanks, controls, pipework and cylinder condition together.
Separate fuel-specific assessment: oil and electricity
These appliances belong to the manufacturer’s UK directory but require different fuel, electrical and installer-competence checks. They are not automatic recommendations from the existing gas-oriented Finder. Listing them does not assert SwiftHeat oil accreditation.
Manufacturer warranty optionsUp to 5 years
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 5 years as listed in the current UK pocket guide, subject to the exact eligible oil installation and registration terms. Separate component warranties must not be confused with whole-appliance cover. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Key takeaway: Oil supply, tank condition, flue, cylinder and operating costs require an oil-specific assessment. This guide does not establish installer oil accreditation or suggest an automatic gas-to-oil conversion.
For qualifying models and registration packages. Annual servicing required.
Your written quotation confirms the cover included. Extensions may be chargeable. Badges in the product image are subject to these conditions.
Warranty eligibility & conditions
Up to 2 years as listed in the June 2026 UK guide, subject to applicable electric-appliance installation, registration and servicing terms. Subject to current manufacturer terms, model and installation eligibility, installer registration/status, correct commissioning and annual servicing. Registration deadlines and any qualifying controls, accessories or system-water requirements must be confirmed. The written quotation confirms actual cover; maximum cover is not automatic.
Key takeaway: Assess heat loss, electrical capacity, tariffs and cylinder requirements before comparing electric heating with gas or a heat pump. Efficiency at the appliance does not guarantee low running costs.
Model labels are not a whole-house sizing formula. Output tables distinguish heating at stated flow/return temperatures from hot-water duty and measured flow. Storage volume changes the hot-water arrangement, but does not guarantee pressure or simultaneous shower performance.
The ten Vitotron configurations are selectable power and supply settings, not ten distinct orderable boilers. Confirm the exact appliance generation and permissible settings before ordering.
Warranty packages and controls
Current product pages advertise qualifying VPlus packages, while the homeowner registration table and older literature can state different cover. Maximum warranty is conditional; installer status, registration deadlines, commissioning, annual servicing, required controls/components and any chargeable extension must be checked. Separate heat-exchanger cover is not whole-boiler cover.
Connected controls vary by platform and generation. An integral WiFi interface, outdoor sensor, gateway or compatible controller must be confirmed rather than assuming every Viessmann boiler supports every app or thermostat.
Viessmann installation in Cardiff and South Wales
SwiftHeat UK helps customers compare the complete installation rather than selecting a brand first. Discuss the existing system, budget, access and hot-water requirements with us. Assess First. Recommend Second.
Viessmann questions
Which Viessmann boilers are covered?
Current UK directory and linked literature cover Vitodens Classic / 025-W, 050-W, 100-W combi/system/heat-only, 111-W storage combi, domestic 200-W and 222-F storage combi. Vitorondens oil and Vitotron electric options are separated for fuel-specific assessment. Larger commercial boilers, fuel-cell CHP and heat pumps are outside this boiler catalogue.
Why are Classic and 025-W combined?
The June 2026 UK pocket guide lists the same two product codes under both names. One guide explains both without inventing extra output variants or duplicate product pages.
Is the longest Viessmann warranty included automatically?
No. VPlus packages differ from the homeowner registration table and older brochures. The exact model, installer status, registration route and deadline, commissioning, servicing, qualifying components and any paid extension must be checked against current manufacturer terms.
How does SwiftHeat assess suitability?
We assess heat loss, water supply, hot-water routines, fuel and electrical capacity, the existing cylinder and heating circuit, flue, siting, water quality and controls. The Boiler Finder offers preliminary research guidance; professional assessment determines the specification.
Installation and pricing
The installed price for your selected boiler is confirmed after assessment. The quotation covers the appliance, controls, flue, system preparation and any required pipework. A conversion or relocation can have a different scope from a straightforward replacement.
SwiftHeat’s general starting package
New boiler installations from £1,790 inc. VAT apply to a qualifying standard, straightforward replacement: one bathroom, fewer than 10 radiators and a standard horizontal flue, subject to survey. Specification and warranty selection affect the final cost. This is a general starting offer and is not a price for every model in this catalogue.
0% options over 3, 6, 9 or 12 months through Humm Group Limited, subject to application, affordability, eligibility, approval and provider terms. Any applicable deposit, fees and repayment conditions are confirmed during your enquiry/application. Acceptance is not guaranteed.
Two free annual services and a Hive Mini are available on qualifying installations only. Every model is considered under the qualification rules; inclusion in this catalogue does not confirm eligibility. Ask us to confirm the offer in your quotation.
Plan the maintenance your appliance requires and keep its service records. If you are considering replacement because of a fault, diagnosis can help establish whether repair is a suitable option first.
We assess heat loss, heating and hot-water requirements, water supply, controls and installation access before recommending an appliance. Bedroom count or a catalogue model number alone cannot establish the right boiler.
Gas Safe registration 978273 · Serving Cardiff, South Wales and across the UK.
