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Assess First. Recommend Second.

Baxi Platinum Compact Combi

A Compact-generation combi with three hot-water options and a supplied system filter.

Baxi Platinum Compact Combi combi
Platinum Compact Combi · Official Baxi product image. Any warranty badge is conditional. Manufacturer image source.

At a glance

Arrangement and fuel
Combi · Natural gas
Nominal output labels
25, 30, 36 kW
Casing dimensions
700 × 390 × 285 mm (H × W × D)
Warranty position
Up to 10 years, subject to terms

Available outputs

CH means central heating; DHW means domestic hot water. Nominal model labels are shown separately from verified ratings. Gas CH maximum/minimum values use the non-condensing basis; a second maximum is shown only where a verified condensing rating is available. The source basis below controls the comparison. No missing value is calculated from another variant.

Platinum Compact Combi: verified model and fuel configurations
Model / fuelNominal label (kW)CH maximum (kW)DHW output (kW)CH minimum (kW)DHW at ΔT 35°C
Baxi Platinum Compact Combi 25 · Natural gas2520 / 21.2 condensing256.110.2 l/min
Baxi Platinum Compact Combi 30 · Natural gas3020 / 21.2 condensing306.112.2 l/min
Baxi Platinum Compact Combi 36 · Natural gas3625 / 26.4 condensing366.715 l/min
  • CH 80/60°C and condensing CH 50/30°C; nominal DHW rating per official manual

The homeowner page gives a 395 mm width; the linked Compact installation manual gives 390 mm. The manual is used here; confirm the exact appliance and service clearances at survey. No LPG configuration is verified in this manual.

Key features and benefits

The product package includes an Adey Micro2 filter and an Easy-fill pressure top-up arrangement. The manufacturer identifies uSense 2 control compatibility, with the required accessories checked at quotation.

Who could this boiler suit?

Platinum Compact is distinct from earlier Platinum generations. Compare the 25, 30 and 36 models using their heating and hot-water ratings separately.

A combi may suit a home where on-demand hot water can meet the household’s routines without a separate cylinder. Measured mains flow and dynamic pressure limit performance, particularly when outlets run together. Bathroom count alone does not confirm suitability.

Warranty

Up to 10 years, subject to Baxi terms, product eligibility, registration, commissioning and annual servicing. The eligible installation package is confirmed in your written quotation. The supplied Adey Micro2 magnetic filter must be installed and registered with the boiler, and maintained throughout the warranty.

Manufacturer warranty, SwiftHeat installation cover and qualifying Care+ services are separate. Keep the required registration, commissioning and service records. Your quotation confirms the exact terms before purchase.

Manufacturer warranty information · Ongoing servicing

Controls and compatibility

Baxi’s product page identifies uSense 2 compatibility. Confirm the required gateway/adaptor accessories and the exact Compact generation before installation.

Only the verified fuel configurations are shown. LPG is not inferred from the Baxi brand name.

Discuss heating controls

Installation with SwiftHeat UK

Assess gas supply, flue route, condensate disposal, heating water quality, controls and future service access. The casing dimensions alone cannot approve a cupboard installation.

A same-arrangement replacement, relocation and conversion involve different work. SwiftHeat confirms the appliance and complete installation scope after survey. Assess First. Recommend Second.

Frequently asked questions

What do the Platinum Compact Combi output numbers mean?

The guide separates nominal model labels from verified heating output and rated hot-water output. Non-condensing and condensing ratings use different operating conditions. A heat-loss calculation and installation assessment are still required.

What warranty applies to Platinum Compact Combi?

Up to 10 years, subject to Baxi terms, product eligibility, registration, commissioning and annual servicing. The eligible installation package is confirmed in your written quotation. The supplied Adey Micro2 magnetic filter must be installed and registered with the boiler, and maintained throughout the warranty.

Can Platinum Compact Combi be specified for LPG?

No LPG configuration is included in this verified guide. Do not assume compatibility from another Baxi family. SwiftHeat must confirm the exact appliance and manufacturer instructions before proposing an LPG installation.

Verified manufacturer information

Checked 1 October 2026. Availability and terms can change; the exact appliance and current instructions are confirmed again at quotation.

Official Baxi product photography and trademarks remain the property of their respective owners. Manufacturer warranty graphics do not confirm the eligibility of a SwiftHeat package.

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.

Read the starting-package conditions

Humm finance

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.

Finance terms and charges

Qualifying Care+ installations

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.

Ask about Care+ eligibility

Ongoing support

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.

Boiler servicing · Repair advice

Installation pricing

Price 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.

Your home comes 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.

Understand suitable boiler types · Start the Boiler Finder · Our installation assessment · Areas we cover