Assess First. Recommend Second.
Understand the remastered range, compare boiler arrangements and choose the right model after a property assessment.
Vaillant uses remastered for its updated ecoTEC plus combi and system generation. Features include IoniDETECT combustion monitoring and connected-control options using a compatible myVAILLANT connect gateway. The exact model, generation and control package matter when comparing a new installation with an older ecoTEC plus.
Start with the heating and hot-water arrangement. The ecoTEC plus name alone does not tell you whether a separate cylinder is needed or how hot water is supplied.
| Arrangement | Hot-water setup | What to assess |
|---|---|---|
| Standard combi | Heated on demand inside the appliance | Incoming water performance and simultaneous demand |
| Storage combi | Storage within the appliance | Exact model delivery, recovery and installation requirements |
| System | Stored in a separate cylinder | Cylinder compatibility, capacity, controls and recovery |
| Open vent / heat-only | Separate cylinder and system components | Retained pump, valves, feed and expansion arrangements |
| Specialist large-output system | Project-specific cylinder arrangement | Calculated larger load and specialist specification |
Use the individual model guides for central-heating outputs, hot-water figures and generation-specific information. The combi label is not a whole-house heating calculation, and an instantaneous hot-water rating is not a cylinder-recovery rating.
The remastered on-demand range, with four distinct hot-water variants.
Model labels: 26 kW | 32 kW | 36 kW | 40 kW
Warranty: Up to 10 years, subject to the eligible package
Range: Homeowner / domestic range
Key takeaway: Compare the hot-water rating separately from the heating load: a 40 kW label does not mean a 40 kW heating requirement.
Explore ecoTEC plus Combi
The 940 combines a combi boiler with integrated hot-water storage.
Model labels: 40 kW
Warranty: Up to 10 years, subject to the eligible package
Range: Homeowner / domestic range
Key takeaway: Check the deeper casing, available space and actual household demand before choosing integrated storage; it is not a substitute for measured water-supply performance.
Explore ecoTEC plus Storage Combi
Six remastered system outputs for an assessed separate-cylinder installation.
Model labels: 10 kW | 15 kW | 20 kW | 25 kW | 30 kW | 35 kW
Warranty: Up to 10 years, subject to the eligible package
Range: Homeowner / domestic range
Key takeaway: Cylinder-reheat ratings can exceed the heating rating. The separate cylinder, storage capacity and recovery must be assessed as part of the complete system.
Explore ecoTEC plus System
The heat-only ecoTEC plus range for a cylinder-based heating arrangement.
Model labels: 12 kW | 15 kW | 18 kW | 24 kW | 30 kW | 35 kW
Warranty: Up to 10 years, subject to the eligible package
Range: Homeowner / domestic range
Key takeaway: Retaining an open-vent arrangement may limit conversion work, but boiler, tanks, pump and cylinder condition still need assessment.
Explore ecoTEC plus Open Vent
48 and 64 kW labels for specialist larger-load projects.
Model labels: 48 kW | 64 kW
Warranty: Up to 10 years, subject to the eligible package
Range: Specialist large-load assessment
Key takeaway: These are labelled light-commercial products by Vaillant. They are retained for larger domestic-load research and excluded from the general homeowner Finder shortlist.
Explore ecoTEC plus Large Output SystemThe boiler works with the rest of the heating system. We assess radiator output, valves, circulation and water quality alongside controls, flue and condensate routing. A larger boiler cannot correct every cold room or a restricted incoming water supply.
Vaillant’s current remastered product information describes a five-year standard guarantee with an eligible extension up to ten years, subject to installer registration and protection-kit conditions. The applicable cover, registration and servicing requirements must be confirmed for the exact installation; maximum cover is not automatic.
SwiftHeat’s assessment establishes the appliance, controls, flue, preparation and any cylinder or pipework work included in the quotation. A range overview cannot confirm a fixed ecoTEC plus installation price for your home.
Remastered identifies Vaillant’s updated ecoTEC plus combi and system generation. The range name also appears on other arrangements, so confirm the exact model and generation before comparing features or planning a replacement.
The ecoTEC plus name covers several arrangements. Standard combi models heat tap water on demand, system models work with a separate cylinder, and open-vent models are heat-only boilers. Storage-combi and specialist large-output options have their own requirements.
Match the property’s calculated heat loss, hot-water demand and measured water supply to the exact appliance. A combi model label, central-heating output and hot-water flow rating are different figures; the largest label is not automatically the best choice.
Compatibility depends on the boiler generation, controller, gateway and wiring. We check the complete combination before recommending retained controls or Vaillant eBUS and connected-control options. App control requires a suitable gateway and configuration.
No. Manufacturer guarantee eligibility depends on the exact model, eligible installer registration, protection package, commissioning and current terms. Your written quotation must confirm the applicable cover and registration and servicing requirements.
SwiftHeat UK assesses Vaillant installations in Cardiff and South Wales. The survey covers heating and hot-water requirements, existing components, system preparation, controls, flue routing and access before a model and installed price are confirmed.
Overview sources checked 7 October 2026. Detailed model guides retain their recorded verification dates; availability and terms are reconfirmed when preparing your quotation.
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.
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.
Read the starting-package conditions0% 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.
Finance terms and chargesTwo 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.
Ask about Care+ eligibilityPlan 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.
Boiler servicing · Repair advicePrice confirmed following assessment for this configuration. The general New boiler installations from £1,790 inc. VAT offer does not apply to every model or property.
From or indicative prices remain provisional. SwiftHeat issues a written fixed quotation for the agreed scope after the appropriate property and installation assessment, technical checks and warranty-package verification. Remote information gathering may be suitable initially; a home survey is required where the necessary checks cannot be completed remotely.
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.
Understand suitable boiler types · Start the Boiler Finder · Our installation assessment · Areas we cover
