Baxi 824 Combi 2 Gas Combi Boiler 24kW 7814304
The Baxi 824 Combi 2 (part number 7814304) is a 24 kW wall-hung condensing gas combination boiler from Baxi's premium 800 range, combining on-demand mains-pressure hot water and central heating in a single compact unit. Against the equivalent 600 series combi, the 824 Combi 2 extends the warranty to a class-leading 10 years and adds a factory-included Adey MagnaClean Micro2 system filter to protect the boiler and heating circuit from day one. A stainless steel heat exchanger, brass hydraulic block, 93% seasonal efficiency, ErP A-rating, and certified hydrogen-blend compatibility make this the ideal upgrade specification for single-bathroom homes where the customer wants maximum long-term protection without compromising on performance.
The 10-year parts and labour warranty is the standout advantage of the 800 series over the 600 series. Register within 30 days of installation and maintain an annual service to keep full coverage valid. Terms at baxi.co.uk/terms.
The Adey MagnaClean Micro2 magnetic system filter is included with every 824 Combi 2. It captures magnetic and non-magnetic debris from the heating circuit, protecting the heat exchanger from sludge and magnetite build-up from the first day of operation.
With a 24 kW DHW output and a flow rate of approximately 10.2 litres per minute at a 35°C rise, the 824 Combi 2 comfortably meets the hot water demands of a single-bathroom home. Hot water response at 1 m from tap is just 5 seconds.
The combination of a stainless steel heat exchanger and a brass hydraulic block delivers exceptional durability and corrosion resistance — key factors in Baxi's confidence to offer a 10-year warranty on this model.
The 824 Combi 2 achieves 93% seasonal efficiency and holds an ErP A energy-rating, reducing gas consumption and carbon emissions compared to older G-rated boilers while meeting the requirements of Part L of the Building Regulations.
The pre-heated siphonic condensate trap warms condensate before it exits the boiler, discharging it in a single go to minimise the risk of frozen condensate pipes in winter — a common cause of boiler shutdowns.
The 824 Combi 2 can be converted between natural gas (G20) and LPG (G31) by a Gas Safe engineer without a separate conversion kit, making it equally suitable for mains gas and off-grid LPG installations.
The boiler supports OpenTherm modulating control for use with Nest, Hive, and other OT-certified thermostats, plus the optional Baxi uSense Wi-Fi thermostat for smartphone-based scheduling and remote control.
The EasyFill permanent filling link is included, allowing homeowners to top up system pressure quickly without engineer involvement, reducing unnecessary callouts.
| Baxi Part Number (MPN) | 7814304 |
| Boiler Type | Wall-hung condensing gas combination boiler (combi) |
| DHW Heat Output | 24 kW |
| CH Max Output (condensing) | ~21.8 kW |
| DHW Flow Rate at 35°C Rise | ~10.2 litres / min |
| DHW Response at 1 m from Tap | 5 seconds |
| DHW Output Range | 4.8 – 24 kW |
| Seasonal Efficiency | 93% |
| ErP Energy Rating | A (central heating) |
| Heat Exchanger | Stainless steel |
| Hydraulic Block | Brass |
| Gas Type | Natural Gas (G20) / LPG (G31) — manual conversion, no kit required |
| Hydrogen Compatibility | Suitable for up to 20% H₂ blend |
| CH Flow Temperature Range | 25 – 80 °C |
| Electrical Supply | 230 V / 50 Hz / single phase |
| Dimensions (H × W × D) | 700 × 344 × 285 mm |
| Min Cupboard Depth | 290 mm |
| Noise Level | 50 dB |
| Included Accessories | Adey MagnaClean Micro2 filter; EasyFill permanent filling link; mounting bracket & screws; copper tails; isolation valves; literature pack |
| Controls Compatibility | OpenTherm; Baxi uSense (optional); Nest; Hive; other OT thermostats |
| NOx Class | Class 6 |
| Max Flue Length (100 mm) | 10 m horizontal / 10 m vertical |
| Max Flue Length (125 mm) | 20 m horizontal / 20 m vertical |
| Warranty | 10 years parts & labour — Adey filter must be installed and registered simultaneously; annual service required |
Original: $2,305.24
-65%$2,305.24
$806.83More Images
Baxi 824 Combi 2 Gas Combi Boiler 24kW 7814304
The Baxi 824 Combi 2 (part number 7814304) is a 24 kW wall-hung condensing gas combination boiler from Baxi's premium 800 range, combining on-demand mains-pressure hot water and central heating in a single compact unit. Against the equivalent 600 series combi, the 824 Combi 2 extends the warranty to a class-leading 10 years and adds a factory-included Adey MagnaClean Micro2 system filter to protect the boiler and heating circuit from day one. A stainless steel heat exchanger, brass hydraulic block, 93% seasonal efficiency, ErP A-rating, and certified hydrogen-blend compatibility make this the ideal upgrade specification for single-bathroom homes where the customer wants maximum long-term protection without compromising on performance.
The 10-year parts and labour warranty is the standout advantage of the 800 series over the 600 series. Register within 30 days of installation and maintain an annual service to keep full coverage valid. Terms at baxi.co.uk/terms.
The Adey MagnaClean Micro2 magnetic system filter is included with every 824 Combi 2. It captures magnetic and non-magnetic debris from the heating circuit, protecting the heat exchanger from sludge and magnetite build-up from the first day of operation.
With a 24 kW DHW output and a flow rate of approximately 10.2 litres per minute at a 35°C rise, the 824 Combi 2 comfortably meets the hot water demands of a single-bathroom home. Hot water response at 1 m from tap is just 5 seconds.
The combination of a stainless steel heat exchanger and a brass hydraulic block delivers exceptional durability and corrosion resistance — key factors in Baxi's confidence to offer a 10-year warranty on this model.
The 824 Combi 2 achieves 93% seasonal efficiency and holds an ErP A energy-rating, reducing gas consumption and carbon emissions compared to older G-rated boilers while meeting the requirements of Part L of the Building Regulations.
The pre-heated siphonic condensate trap warms condensate before it exits the boiler, discharging it in a single go to minimise the risk of frozen condensate pipes in winter — a common cause of boiler shutdowns.
The 824 Combi 2 can be converted between natural gas (G20) and LPG (G31) by a Gas Safe engineer without a separate conversion kit, making it equally suitable for mains gas and off-grid LPG installations.
The boiler supports OpenTherm modulating control for use with Nest, Hive, and other OT-certified thermostats, plus the optional Baxi uSense Wi-Fi thermostat for smartphone-based scheduling and remote control.
The EasyFill permanent filling link is included, allowing homeowners to top up system pressure quickly without engineer involvement, reducing unnecessary callouts.
| Baxi Part Number (MPN) | 7814304 |
| Boiler Type | Wall-hung condensing gas combination boiler (combi) |
| DHW Heat Output | 24 kW |
| CH Max Output (condensing) | ~21.8 kW |
| DHW Flow Rate at 35°C Rise | ~10.2 litres / min |
| DHW Response at 1 m from Tap | 5 seconds |
| DHW Output Range | 4.8 – 24 kW |
| Seasonal Efficiency | 93% |
| ErP Energy Rating | A (central heating) |
| Heat Exchanger | Stainless steel |
| Hydraulic Block | Brass |
| Gas Type | Natural Gas (G20) / LPG (G31) — manual conversion, no kit required |
| Hydrogen Compatibility | Suitable for up to 20% H₂ blend |
| CH Flow Temperature Range | 25 – 80 °C |
| Electrical Supply | 230 V / 50 Hz / single phase |
| Dimensions (H × W × D) | 700 × 344 × 285 mm |
| Min Cupboard Depth | 290 mm |
| Noise Level | 50 dB |
| Included Accessories | Adey MagnaClean Micro2 filter; EasyFill permanent filling link; mounting bracket & screws; copper tails; isolation valves; literature pack |
| Controls Compatibility | OpenTherm; Baxi uSense (optional); Nest; Hive; other OT thermostats |
| NOx Class | Class 6 |
| Max Flue Length (100 mm) | 10 m horizontal / 10 m vertical |
| Max Flue Length (125 mm) | 20 m horizontal / 20 m vertical |
| Warranty | 10 years parts & labour — Adey filter must be installed and registered simultaneously; annual service required |
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Description
The Baxi 824 Combi 2 (part number 7814304) is a 24 kW wall-hung condensing gas combination boiler from Baxi's premium 800 range, combining on-demand mains-pressure hot water and central heating in a single compact unit. Against the equivalent 600 series combi, the 824 Combi 2 extends the warranty to a class-leading 10 years and adds a factory-included Adey MagnaClean Micro2 system filter to protect the boiler and heating circuit from day one. A stainless steel heat exchanger, brass hydraulic block, 93% seasonal efficiency, ErP A-rating, and certified hydrogen-blend compatibility make this the ideal upgrade specification for single-bathroom homes where the customer wants maximum long-term protection without compromising on performance.
The 10-year parts and labour warranty is the standout advantage of the 800 series over the 600 series. Register within 30 days of installation and maintain an annual service to keep full coverage valid. Terms at baxi.co.uk/terms.
The Adey MagnaClean Micro2 magnetic system filter is included with every 824 Combi 2. It captures magnetic and non-magnetic debris from the heating circuit, protecting the heat exchanger from sludge and magnetite build-up from the first day of operation.
With a 24 kW DHW output and a flow rate of approximately 10.2 litres per minute at a 35°C rise, the 824 Combi 2 comfortably meets the hot water demands of a single-bathroom home. Hot water response at 1 m from tap is just 5 seconds.
The combination of a stainless steel heat exchanger and a brass hydraulic block delivers exceptional durability and corrosion resistance — key factors in Baxi's confidence to offer a 10-year warranty on this model.
The 824 Combi 2 achieves 93% seasonal efficiency and holds an ErP A energy-rating, reducing gas consumption and carbon emissions compared to older G-rated boilers while meeting the requirements of Part L of the Building Regulations.
The pre-heated siphonic condensate trap warms condensate before it exits the boiler, discharging it in a single go to minimise the risk of frozen condensate pipes in winter — a common cause of boiler shutdowns.
The 824 Combi 2 can be converted between natural gas (G20) and LPG (G31) by a Gas Safe engineer without a separate conversion kit, making it equally suitable for mains gas and off-grid LPG installations.
The boiler supports OpenTherm modulating control for use with Nest, Hive, and other OT-certified thermostats, plus the optional Baxi uSense Wi-Fi thermostat for smartphone-based scheduling and remote control.
The EasyFill permanent filling link is included, allowing homeowners to top up system pressure quickly without engineer involvement, reducing unnecessary callouts.
| Baxi Part Number (MPN) | 7814304 |
| Boiler Type | Wall-hung condensing gas combination boiler (combi) |
| DHW Heat Output | 24 kW |
| CH Max Output (condensing) | ~21.8 kW |
| DHW Flow Rate at 35°C Rise | ~10.2 litres / min |
| DHW Response at 1 m from Tap | 5 seconds |
| DHW Output Range | 4.8 – 24 kW |
| Seasonal Efficiency | 93% |
| ErP Energy Rating | A (central heating) |
| Heat Exchanger | Stainless steel |
| Hydraulic Block | Brass |
| Gas Type | Natural Gas (G20) / LPG (G31) — manual conversion, no kit required |
| Hydrogen Compatibility | Suitable for up to 20% H₂ blend |
| CH Flow Temperature Range | 25 – 80 °C |
| Electrical Supply | 230 V / 50 Hz / single phase |
| Dimensions (H × W × D) | 700 × 344 × 285 mm |
| Min Cupboard Depth | 290 mm |
| Noise Level | 50 dB |
| Included Accessories | Adey MagnaClean Micro2 filter; EasyFill permanent filling link; mounting bracket & screws; copper tails; isolation valves; literature pack |
| Controls Compatibility | OpenTherm; Baxi uSense (optional); Nest; Hive; other OT thermostats |
| NOx Class | Class 6 |
| Max Flue Length (100 mm) | 10 m horizontal / 10 m vertical |
| Max Flue Length (125 mm) | 20 m horizontal / 20 m vertical |
| Warranty | 10 years parts & labour — Adey filter must be installed and registered simultaneously; annual service required |
