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Combi Boilers
Shop combi boilers at Plumbco, with gas combination boilers designed to provide central heating and hot water from a single compact unit. Whether you're replacing an existing boiler or planning a new heating system, explore our available models to find an option suited to your property's heating and hot water requirements.
A combi boiler heats water on demand, removing the need for a separate hot water storage cylinder in many installations. Its compact design makes it a popular choice for homes where space is limited.
Choosing the Right Combi Boiler
When choosing a new combi boiler, consider the size of your property, the number of bathrooms, your household's hot water demand and the heating output required. Boiler outputs vary, so check each product's specifications to compare suitable models.
You should also consider the available flue options, system compatibility, warranty information and manufacturer requirements before purchasing. A qualified heating engineer can help establish the appropriate boiler output and confirm that the selected model is suitable for your installation.
Browse the combi boilers available at Plumbco and compare product specifications, brands and prices to find the right option for your heating project.
Worcester Greenstar 4000 25kW Combi Boiler 7733600371
7733600371
The Worcester Bosch Greenstar 4000 25kW Combi Boiler (7733600371) is an A-rated natural gas condensing boiler designed for efficient central heating and domestic hot water. Ideal for small to medium-sized homes, it features a compact 724 x 400 x 310mm design, quiet 45dB operation, full-colour display and hot water flow rates up to 10.2L/min.
£1,308.00 incl tax
Worcester Greenstar 4000 30kW Combi Boiler 7733600373
7733600373
The Worcester Bosch Greenstar 4000 30kW Combi Boiler (7733600373) is an A-rated gas combi boiler designed for efficient central heating and hot water in small to medium-sized homes. With a 12.3L/min maximum hot water flow rate, quiet operation, full-colour display and compatibility with smart controls, it offers reliable performance and flexible installation.
£1,452.14 incl tax
NEW Ideal Logic Code ESP1 38kw Combi Boiler - NEW ERP MODEL 215737
215737
The Ideal Logic Code ESP1 38 Combi Boiler Only 215737 delivers high-performance heating and hot water for large homes. With a 38kW output and built-in energy efficiency, this combi boiler from the Ideal Logic ESP1 range provides reliable, compact, and cost-effective heating solutions for modern households.
£2,057.28 incl tax
Worcester Bosch Greenstar 1000 24Kw Combi 7736902178 - 5 Year Warranty
7736902178
The Worcester Bosch Greenstar 1000 24kW Combi Boiler (7736902178) is an A-rated natural gas combi boiler designed for efficient central heating and hot water. Its compact cupboard-fit design measures 655 x 395 x 285mm, while Quick Tap technology and a 1:5 modulation range help improve water and energy efficiency. It is suitable for apartments and small to medium-sized homes.
£719.91 incl tax
Worcester Bosch Greenstar 1000 30Kw Combi 7736902179 - 5 Year Warranty
7736902179
Upgrade your home's heating with the Worcester Greenstar 1000 30kW Combi Boiler. This powerful and efficient boiler delivers reliable hot water and heating on demand, featuring advanced technology for maximum energy efficiency and user comfort.
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Glowworm Energy 30kw Combi Boiler 0010015653/0010035897
101270
The Glow-worm Energy 30kW Combi Boiler 10035897 is a high-efficiency gas combi boiler designed to deliver dependable central heating and instant hot water. Ideal for medium-sized homes, its compact design and energy-saving performance make it a reliable heating solution.
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Glowworm Energy 25kw Combi Boiler 0010015652/0010035896
101269
The Glow-worm Energy 25kW Combi Boiler 10035896 is a compact, high-efficiency gas combi boiler providing reliable central heating and instant hot water. Ideal for small to medium-sized homes, it offers energy-saving performance without the need for a separate hot water cylinder.
£2,257.09 incl tax
NEW Ideal Exclusive2 24kw Combi Boiler & Clock - 5 Years Warranty 220478
217750
The Ideal Exclusive2 24kW Combi Boiler (220478) is an A-rated natural gas boiler providing efficient central heating and instant domestic hot water. With a 9.9L/min hot water flow rate, compact cupboard-fit design, digital display, built-in mechanical timer and OpenTherm connectivity, it offers reliable performance for domestic heating systems. Supplied as boiler only with a 5-year warranty.
£693.18 incl tax
Glowworm Energy 35kw Combi Boiler 0010015654/0010035898
101271
The Glow-worm Energy 35kW Combi Boiler 10035898 is a powerful, high-efficiency gas combi boiler delivering reliable central heating and instant hot water. Ideal for larger homes with higher hot water demand, it offers compact installation and energy-saving performance.
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NEW Ideal Exclusive2 35kw Combi Boiler & Clock - 5 Year Warranty 220480
217752
The Ideal Exclusive2 35kW Combi Boiler Only 220480 is a high-performance boiler designed for larger homes. Part of the Exclusive2 range, it delivers instant hot water, efficient central heating, and reliable performance. Its compact design allows easy installation while providing energy-efficient operation for long-term savings.
£822.16 incl tax
Vaillant ecoTEC Plus 832 32kW Combi Boiler 10036016
0010036016
The Vaillant ecoTEC Plus 832 is a 32kW wall-mounted combi boiler from the Vaillant ecoTEC Plus range, designed to provide heating and hot water from a single appliance. With an A-rated ERP efficiency rating, touchscreen display and low NOx Class 6 performance, it provides a modern heating solution for compatible domestic installations.
The boiler provides a maximum central heating condensing output of 26.5kW and a maximum domestic hot water output of 32.6kW. With a DHW flow rate of 13.0 litres per minute at a 35°C temperature rise, it is designed to provide a strong hot water supply for suitable installations.
The ecoTEC Plus 832 supports horizontal and vertical flue configurations, with maximum flue lengths depending on the flue diameter and installation arrangement.
The boiler provides a maximum central heating condensing output of 26.5kW and a maximum domestic hot water output of 32.6kW. With a DHW flow rate of 13.0 litres per minute at a 35°C temperature rise, it is designed to provide a strong hot water supply for suitable installations.
The ecoTEC Plus 832 supports horizontal and vertical flue configurations, with maximum flue lengths depending on the flue diameter and installation arrangement.
£1,811.76 incl tax
Vaillant ecoTEC Pro 28HE LPG Combi Boiler ERP - 0010021838
0010021838
The Vaillant ecoTEC Pro 28 LPG Combi Boiler 0010021838 is a high-efficiency LPG gas combi boiler delivering reliable central heating and instant hot water. Ideal for off-grid properties using liquefied petroleum gas.
£1,858.91 incl tax
Vaillant ecoTEC Plus NEW 826 26kw Combi Boiler Only
0010036015
The Vaillant ecoTEC Plus 826 26kW Combi Boiler 0010036015 features innovative ioniDETECT technology for intelligent gas combustion monitoring, delivering outstanding energy efficiency, reliable central heating and instant hot water for modern homes.
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Vaillant ecoFIT Sustain 825 Combi Boiler 0010020392 ERP
105526
The Vaillant ecoFIT Sustain 825 Combi Boiler 0010020392 is a compact, high-efficiency 25kW combi boiler designed for reliable heating and instant hot water. Ideal for apartments and smaller homes, it delivers excellent performance while helping to reduce energy usage.
£1,309.86 incl tax
Vaillant ecoTEC Sustain 28kW Boiler Only 0010019981
105531
The Vaillant ecoTEC Sustain 28kW Combi Boiler 0010019981 is a wall-mounted condensing gas boiler designed to provide reliable central heating and instant domestic hot water. It features an ErP A rating, stainless steel heat exchanger and compact design.
£5,210.46 incl tax
Vaillant ecoTEC Plus NEW 836 36kw Combi Boiler Only
0010036017
The Vaillant ecoTEC plus 836 36kW Combi Boiler (0010036017) is a high-performance condensing gas boiler designed for reliable central heating and domestic hot water. Measuring 720 x 440 x 352mm, it features smart home connectivity, an intuitive semi-touch display, IoniDETECT combustion monitoring and a modulation range of up to 1:10.
£1,954.02 incl tax
Navien Combination Boiler - 28kw - 5 Year Warranty WITH FOC FLUE
NCB300-28K
The Navien NCB300-28K Combination Boiler is a compact, 28kW gas condensing combi boiler ideal for smaller properties. Offering high-performance heating and reliable hot water delivery, it supports up to one shower and provides a DHW flow rate of up to 16 l/min. With a 5-year warranty and flexible installation options, this boiler combines efficiency with exceptional reliability.
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Navien Combination Boiler - 37kw - 5 Year Warranty
NCB300-37KK
The Navien NCB300-37K Combination Boiler delivers powerful heating and hot water performance with a 37kW output, making it ideal for homes with up to two showers. This compact gas condensing combi boiler offers efficient heating and DHW flow rates up to 21.3 l/min. With flexible installation options and a 5-year warranty, it ensures reliability and comfort for medium-sized homes.
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Navien Combination Boiler - 41kw - 5 Year Warranty
NCB300-41KK
The Navien NCB300-41K Combination Boiler offers a powerful 41kW output, perfect for homes with two showers and a tap running simultaneously. This compact gas condensing combi boiler delivers reliable heating and hot water with a DHW flow rate up to 23.6 l/min. With flexible installation options and a 5-year warranty, it's ideal for larger homes seeking efficiency and performance.
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