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Main Eco Compact Combi
Combi Boilers
A tried and tested technology, this boiler is cupboard-fit, lightweight, compatible with the Baxi OpenTherm RF thermostat and has a five year warranty*.
We’re giving you double points on qualifying products from 6th Jan – 2nd March 2026. Work done. Points doubled – simple.
All you need to do is install and register qualifying products on our loyalty scheme Baxi Works and those double points are yours!
*Subject to registration on warranty.baxi.co.uk or Baxi Works. Terms and conditions apply
No documentation available.
No documentation available.
No documentation available.
No documentation available.
A: Boiler width = 390mm
B: Boiler height = 700mm
C: Boiler depth = 285mm
D: Side clearance = Side 5mm*
E: Upper clearance = Upper 178mm*
F: Lower clearance = Lower 200mm*
G: Front clearance = Front 5mm*
*450mm for servicing
| Main Eco Compact Combi | Units | Main Eco CompactCombi 25kW | Main Eco CompactCombi 30kW |
|---|---|---|---|
| Sales code (boiler only) | 7714519 | 7714161 | |
| Controls and accessories | |||
| Reset button | Yes | Yes | |
| User adjustable DHW temperature | Yes | Yes | |
| User adjustable CH temperature | Yes | Yes | |
| LED temp/status/fault diagnosis display | Yes | Yes | |
| Gas | |||
| Natural gas | Yes | Yes | |
| Nominal inlet supply pressure | mbar | 20 | 20 |
| Maximum gas rate | m3/h | 2.71 | 3.26 |
| Propane LPG | No | No | |
| Heat input central heating (CH) | kW Max Gross(QnHs) | 22.86 | 22.86 |
| kW Min Gross(QnHs) | 6.87 | 6.87 | |
| Heat output CH non-condensing | kW Max (Pn) | 20.00 | 20.00 |
| kW min (Pn) | 6.20 | 6.20 | |
| Heat output CH condensing | kW max (Pnc) | 21.16 | 21.20 |
| kW min (Pnc) | 6.70 | 6.70 | |
| Heat input domestic hot water | kW Max Gross (QnwHs) | 25.77 | 30.00 |
| Heat output domestic hot water | kW Max (Pn) | 25.00 | 30.93 |
| ErP product information | |||
| NOx | class | 6 | 6 |
| Space heating efficiency class | A | A | |
| Water heating declared load profile | XL | XL | |
| Water heating efficiency class | A | A | |
| Seasonal space heating energy efficiency | % | 93 | 93 |
| Electrical | |||
| Electrical supply | Volts/Hz | 230/50 | 230/50 |
| Permanent live required | Yes | Yes | |
| Fitted electrical cable | No | No | |
| Power consumption | Watts | 68 | 68 |
| External fuse rating | Amps | 3 | 3 |
| Internal fuse rating | Amps | F2AH250V | F2AH250V |
| Ingress protection rating | IPX5D | IPX5D | |
| Integral ‘boiler only’ frost thermostat | Yes | Yes | |
| Mechanical | |||
| Multifit Pre-Plumb jig (7682545) | Yes | Yes | |
| Isolating valves | Yes | Yes | |
| Gas supply connection | mm | 22 | 22 |
| Central heating connections | mm | 22 | 22 |
| Domestic hot water connections | mm | 15 | 15 |
| Condensate drain connection | mm | 21.50 | 21.50 |
| Safety discharge connection | mm | 15 | 15 |
| Safety discharge pressure | bar | 3 | 3 |
| Temporary rigid filling loop included | Yes | Yes | |
| Hydraulic | |||
| Domestic hot water output (raised 35°C) (max) | l/min | 10.2 | 12.2 |
| Domestic hot water operating flow rate (min) | l/min | 2* | 2* |
| Domestic hot water operating pressure (min) | bar | 0.5 | 0.5 |
| Domestic hot water system pressure (max) | bar | 8 | 8 |
| CH safety discharge pressure | bar | 3 | 3 |
| Integral automatic bypass | Yes | Yes | |
| Integral expansion vessel capacity | litres | 7 | 7 |
| Max capacity of central heating system | litres | 100 | 100 |
| Compartment ventilation requirement | No | No | |
| CH system inhibitor required | Yes | Yes | |
| 24 hour pump exercise | Yes | Yes | |
| Pump overrun | Yes | Yes | |
| Concentric flue systems | |||
| Concentric flue diameters | mm | 60/100 | |
| Standard horizontal flue kit length (60/100mm) | mm | 685 | 685 |
| Max equiv length horizontal/vertical (60/100mm) | m | 10 | 10 |
| Equivalent length per 135º bend | m | 0.50 | 0.50 |
| Equivalent length per 93º bend | m | 1.00 | 1.00 |
| Weights | |||
| Max installation lift weight | kg | 29 | 29 |
| Gross packaged boiler weight | kg | 32 | 32 |
If you are a merchant or installer, your local Baxi representative is here to help.
