Compare combi ranges, output options and manufacturer cover. Brian confirms the suitable model and full installed price for your home.
Product photographs show manufacturer ranges, rather than completed Heatflow installations. The appearance can vary by output and generation.
Ideal MAX accreditation, with compact and premium options to compare.
24 · 30 · 35 kW
Compact cupboard fit, colour display and an included Ideal System Filter.
A practical starting point when space and the complete installation cost are priorities.
26 · 32 · 40 kW
Stainless-steel heat exchanger, colour display and an included Ideal System Filter.
Consider for premium components, eligible longer cover or the hot-water output of the 40 kW version.
Read the package differences alongside the model options.
| Model | What it offers | What an upgrade changes | Manufacturer cover |
|---|---|---|---|
| Logic MAX Combi2 | Compact cupboard fit, colour display and an included Ideal System Filter. | Compare Vogue MAX for its stainless-steel heat exchanger, premium components and eligible 12-year cover. | 10-year warranty, subject to terms |
| Vogue MAX Combi | Stainless-steel heat exchanger, colour display and an included Ideal System Filter. | An upgrade for specification and cover. Choose the output for your water demand; higher price does not automatically mean lower bills. | Up to 12 years through a MAX Accredited Installer |
Published litres per minute at a 35°C temperature rise. Selected natural-gas models, on the same test basis within this chart.
Bars start at zero; full scale is 18 L/min. Higher output can provide more hot water, but actual delivery depends on your incoming supply and water temperature. This is not an efficiency or savings ranking. Worcester’s 40°C chart cannot be compared directly with the 35°C charts.
Source: Manufacturer data 1, Manufacturer data 2
Compare the Greenstar 2000, 4000 and 8000+ combi ranges.
25 · 30 kW
Quiet operation and a straightforward combi range for small to medium homes.
A sensible Worcester starting point for a home with one bathroom, subject to water-supply checks.
25 · 30 kW
Colour text display, Quick Tap function and Bosch EasyControl wireless compatibility.
Consider if the display and compatible control options matter to you.
32 · 36 · 40 · 45 · 50 kW
Touchscreen display, smart-control connectivity and higher hot-water output options.
Consider for greater hot-water demand where the incoming water supply supports the selected model.
Read the package differences alongside the model options.
| Model | What it offers | What an upgrade changes | Manufacturer cover |
|---|---|---|---|
| Greenstar 2000 | Quiet operation and a straightforward combi range for small to medium homes. | Compare the 4000 for its colour display and control features, or the 8000+ for higher output options. | 5-year guarantee; 6 with a Greenstar System Filter |
| Greenstar 4000 | Colour text display, Quick Tap function and Bosch EasyControl wireless compatibility. | More everyday control features than the 2000. The 8000+ adds a touchscreen and a wider high-output range. | Guarantee confirmed for your installation package |
| Greenstar 8000+ | Touchscreen display, smart-control connectivity and higher hot-water output options. | Paying more can add output and interface features. The larger appliance and full installation scope need assessing. | Guarantee confirmed for your installation package |
Published litres per minute at a 40°C temperature rise. Selected natural-gas models, on the same test basis within this chart.
Bars start at zero; full scale is 18 L/min. Higher output can provide more hot water, but actual delivery depends on your incoming supply and water temperature. This is not an efficiency or savings ranking. Worcester’s 40°C chart cannot be compared directly with the 35°C charts.
Source: Manufacturer data 1, Manufacturer data 2, Manufacturer data 3
Compare two compact ranges with different warranty packages.
624 · 630 · 636 (24 · 30 · 36 kW)
Compact design and compatibility with Baxi smart controls.
A compact option when you want a clear, practical boiler package.
824 · 830 · 836 (24 · 30 · 36 kW)
Included Adey Micro2 filter, EasyFill pressure top-up and compact dimensions.
Consider for longer manufacturer cover and the included filter package.
Read the package differences alongside the model options.
| Model | What it offers | What an upgrade changes | Manufacturer cover |
|---|---|---|---|
| 600 Combi 2 | Compact design and compatibility with Baxi smart controls. | Compare the 800 for its 10-year warranty package and included system filter. | 7-year parts and labour warranty, subject to terms |
| 800 Combi 2 | Included Adey Micro2 filter, EasyFill pressure top-up and compact dimensions. | The key package difference from the 600 is cover and the included filter; compare matching outputs rather than assuming extra heating performance. | 10-year parts and labour warranty, subject to terms |
Published litres per minute at a 35°C temperature rise. Selected natural-gas models, on the same test basis within this chart.
Bars start at zero; full scale is 18 L/min. Higher output can provide more hot water, but actual delivery depends on your incoming supply and water temperature. This is not an efficiency or savings ranking. Worcester’s 40°C chart cannot be compared directly with the 35°C charts.
Source: Manufacturer data 1, Manufacturer data 2
Compare cupboard-fit, straightforward and advanced-control combi options.
25 · 30 · 35 kW
Compact cupboard-size design, rear-flue option and compatible Vaillant controls.
Consider where installation space and flue flexibility are important.
24 · 28 · 30 kW
Simple illuminated display and stainless-steel heat exchanger.
A straightforward combi option for small to medium homes, assessed against hot-water demand.
26 · 32 · 36 · 40 kW; storage-combi option separately
Modern interface, IoniDetect technology and myVAILLANT connect compatibility.
Consider for advanced controls, a wider output choice and a modern user interface.
Read the package differences alongside the model options.
| Model | What it offers | What an upgrade changes | Manufacturer cover |
|---|---|---|---|
| ecoFIT pure | Compact cupboard-size design, rear-flue option and compatible Vaillant controls. | Compare the ecoTEC plus if you want its newer interface, advanced technology or a wider combi output range. | 2-year standard guarantee; extensions subject to eligibility |
| ecoTEC pro | Simple illuminated display and stainless-steel heat exchanger. | The remastered ecoTEC plus adds a modern interface and advanced combustion-control technology. | 2-year standard guarantee; paid extensions may be available |
| ecoTEC plus (remastered) | Modern interface, IoniDetect technology and myVAILLANT connect compatibility. | Paying more can add technology and hot-water capability. The internet gateway, thermostat and any cover extension must be confirmed in the quote. | 5-year standard guarantee; extensions subject to eligibility |
Published litres per minute at a 35°C temperature rise. Vaillant notes the fitted flow restrictor targets a 42°C rise, so these figures are reference ratings. Selected natural-gas models, on the same test basis within this chart.
Bars start at zero; full scale is 18 L/min. Higher output can provide more hot water, but actual delivery depends on your incoming supply and water temperature. This is not an efficiency or savings ranking. Worcester’s 40°C chart cannot be compared directly with the 35°C charts.
Source: Manufacturer data 1
Brian can quote two suitable options for the same property so you can compare the actual difference.
A higher-output version may deliver more hot water where the incoming supply supports it. Boiler labels often refer to hot-water output, rather than the heat your radiators need.
Some ranges add premium components, a different heat exchanger or a more advanced display. Choose features you value rather than assuming price alone predicts reliability.
A longer warranty or guarantee can be part of the package. Registration, servicing, filters and installer eligibility may affect the term; Brian confirms the cover included.
A smart thermostat, gateway, flue changes or system work can change the total cost. Compare the same agreed scope as well as the boiler itself.
Ask Brian for a side-by-side installed quote for your preferred models. The price difference depends on output, controls, installation work and the manufacturer package. There are no fixed upgrade prices on this page.
The cover available depends on the manufacturer, model, installer eligibility and installation package. Heatflow is Ideal MAX accredited. Worcester and Vaillant extensions are not assumed; the applicable term is confirmed in your written quote.
Yes. This page compares combi ranges. If you have a cylinder or loft tanks, use the boiler quote builder or contact Brian for the appropriate system or heat-only options.
No. They show published hot-water flow for selected outputs. A higher bar means more litres per minute on the stated test basis, not lower gas bills.
Tell Brian which models you are considering. He will check your home and explain the price difference.
