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Heat Only Boilers

Heat only boilers are also known as open vent, conventional or regular boilers. They heat your central heating and hot water when installed as part of a heating system together with a hot water storage cylinder, cold water storage tank, plus a feed and expansion tank (which is usually stored in the loft above the boiler to provide a good head of water). If the boiler you’re replacing is very old, it is most likely a heat only boiler. One of the other clues is that you’ll have a separate circulating pump, instead of one inside the boiler. We keep a huge stock of efficient condensing heat only boilers from all the leading brands such as Potterton, Worcester, Vaillant, Baxi and Glow-worm. In fact, we have all the heat only boilers you need at the lowest prices.

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Showing items 1-30 of 147

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Potterton Titanium 15 Heat Only Boiler

Potterton Titanium 15 Heat Only Boiler

£1,011.28 £842.73
8 Available for Delivery
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Potterton Titanium 18 Heat Only Boiler

Potterton Titanium 18 Heat Only Boiler

£1,058.78 £882.32
1 Available for Delivery
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Potterton Titanium 24 Heat Only Boiler

Potterton Titanium 24 Heat Only Boiler

£1,140.25 £950.21
44 Available for Delivery
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Potterton Titanium 30 Heat Only Boiler

Potterton Titanium 30 Heat Only Boiler

£1,145.81 £954.84
14 Available for Delivery
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Baxi 415 Heat Only Boiler

Baxi 415 Heat Only Boiler

£974.03 £811.69
11 Available for Delivery
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Baxi 418 Heat Only Boiler

Baxi 418 Heat Only Boiler

£1,022.48 £852.07
36 Available for Delivery
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Baxi 424 Heat Only Boiler

Baxi 424 Heat Only Boiler

£1,105.24 £921.03
32 Available for Delivery
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Baxi 613 Heat Only Boiler

Baxi 613 Heat Only Boiler

£1,133.92 £944.93
12 Available for Delivery
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Baxi 616 Heat Only Boiler

Baxi 616 Heat Only Boiler

£1,174.51 £978.76
14 Available for Delivery
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Baxi 816 Heat Only Boiler c/w MagnaClean Micro 2 Filter

Baxi 816 Heat Only Boiler c/w MagnaClean Micro 2 Filter

£1,191.71 £993.09
27 Available for Delivery
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Baxi 619 Heat Only Boiler

Baxi 619 Heat Only Boiler

£1,255.81 £1,046.51
16 Available for Delivery
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Baxi 625 Heat Only Boiler

Baxi 625 Heat Only Boiler

£1,320.22 £1,100.18
19 Available for Delivery
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Baxi 825 Heat Only Boiler c/w MagnaClean Micro 2 Filter

Baxi 825 Heat Only Boiler c/w MagnaClean Micro 2 Filter

£1,339.08 £1,115.90
59 Available for Delivery
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Baxi 630 Heat Only Boiler

Baxi 630 Heat Only Boiler

£1,401.71 £1,168.09
14 Available for Delivery
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Baxi 830 Heat Only Boiler c/w MagnaClean Micro 2 Filter

Baxi 830 Heat Only Boiler c/w MagnaClean Micro 2 Filter

£1,439.99 £1,199.99
32 Available for Delivery
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Vaillant ecoFit Pure 412 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 412 (ErP) Open Vent Boiler Only

£1,033.20 £861.00
10 Available for Delivery
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Vaillant ecoFit Pure 415 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 415 (ErP) Open Vent Boiler Only

£1,081.20 £901.00
46 Available for Delivery
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Vaillant ecoFit Pure 418 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 418 (ErP) Open Vent Boiler Only

£1,165.20 £971.00
49 Available for Delivery
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Vaillant ecoFit Pure 425 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 425 (ErP) Open Vent Boiler Only

£1,269.60 £1,058.00
39 Available for Delivery
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Vaillant ecoFit Pure 430 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 430 (ErP) Open Vent Boiler Only

£1,379.40 £1,149.50
36 Available for Delivery
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Vaillant ecoFit Pure 435 (ErP) Open Vent Boiler Only

Vaillant ecoFit Pure 435 (ErP) Open Vent Boiler Only

£2,070.00 £1,725.00
10 Available for Delivery
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Vaillant ecoTec Plus 412 (ErP) Open Vent Boiler Only

Vaillant ecoTec Plus 412 (ErP) Open Vent Boiler Only

£1,027.80 £856.50
12 Available for Delivery
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Vaillant ecoTec Plus 415 (ErP) Open Vent Boiler Only

Vaillant ecoTec Plus 415 (ErP) Open Vent Boiler Only

£1,124.40 £937.00
25 Available for Delivery
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Vaillant ecoTEC Plus 424 (ErP) Open Vent Boiler Only

Vaillant ecoTEC Plus 424 (ErP) Open Vent Boiler Only

£1,321.20 £1,101.00
36 Available for Delivery
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Vaillant ecoTec Plus 430 (ErP) Open Vent Boiler Only

Vaillant ecoTec Plus 430 (ErP) Open Vent Boiler Only

£1,388.40 £1,157.00
36 Available for Delivery
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Vaillant ecoTec Plus 435 (ErP) Open Vent Boiler Only

Vaillant ecoTec Plus 435 (ErP) Open Vent Boiler Only

£2,024.40 £1,687.00
33 Available for Delivery
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Vaillant ecoTEC Plus 48 Commercial Boiler

Vaillant ecoTEC Plus 48 Commercial Boiler

£2,687.14 £2,239.28
30 Available for Delivery
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Vaillant ecoTEC Plus 64 Commercial Boiler

Vaillant ecoTEC Plus 64 Commercial Boiler

£3,198.50 £2,665.42
15 Available for Delivery
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Glow-Worm Energy7 12R Regular Boiler

Glow-Worm Energy7 12R Regular Boiler

£958.69 £798.91
7 Available for Delivery
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Glow-Worm Energy7 15R Regular Boiler

Glow-Worm Energy7 15R Regular Boiler

£1,004.05 £836.71
31 Available for Delivery
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Showing items 1-30 of 147

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