Baxi Boiler Prices 2025

Baxi are the third largest boiler supplier in the UK  (1. Worcester Bosch, 2. Ideal) and sell about 300,000 boilers a year.

They are part of BDR Thermea after merging in 2010, and have come a long way since being founded in Preston in 1866.

• they launched the infamous Baxi Bermuda back boiler in 1955

• purchased Potterton and Myson Radiators in 1999

• brands in the group include Potterton, Main Heating and Heatre Sadia

Baxi are a household name in the UK and a very trusted with a 4.6 rating on Trustpilot with over 67k reviews.

Baxi prices by boiler type

Baxi boiler cost is determined by the type of boiler you need. Baxi produce 7 different types of boilers and they all have different pricing. In this article we have pulled together all the information you need about Baxi and the different types of boilers it manufactures to hepl guide you and find your perfect Baxi boiler. Continue reading to find out more and jump to the relevant section using the handy blue jump links below.

Baxi maufacture:

• Combi boilers

• System boilers

• Conventional boilers

• Gas boilers

• LPG boilers

• Condensing boilers

• Compact boilers

Baxi combi boilers cost from £750 right up to £1,500 for the boiler itself and from £2,250 to £5,000 when fully installed. The final cost of the installation will depend on the job type and and complications found during the survey.

• Baxi manufacture premium and value ranges of combi boilers which impacts the cost. The more expensive premium ranges have longer guarantees and more impressive technology.

• Their combi boilers are available from 24kW capacity (perfect for a flat or small house) up to 36kW (perfect for a larger home) with the cost rising as the capacity increases.

• Baxi offer combi boilers with 5 year guarantees (value), 7 year guarantees (mid-range) and 10 year guarantees (premium).

Combi boilers are the most prevalent boilers in the UK and are clever, space saving boilers. They can produce instant hot water, so there is no need for a hot water storage cylinder, and heat the property.

There are 5 boiler ranges produced by Baxi that have combi boiler models. They currently produce 15 different combi boiler models :

• Baxi 800
• Baxi 600
• Baxi 400
• Baxi Platinum Compact
• Baxi Duo-tec Compact

Baxi system boilers cost between £950 and £1,400 for the boiler itself and from £2,450 up to £5,000 when fully installed. The final installation price will be determined by the complexity and intricacies of the job.

• Baxi have premium and value ranges of system boiler; the cost of the premium range is more than the value, however the extra spend does pay for additional technology, higher grade components and longer guarantees.

• Baxi offer 5 year guarantees on their value range, 7 year on the mid tier and 10 years on the premium system boilers.

• The price of a Baxi system boiler also depends on the output capacity required for your property. They offer 15kW for smaller properties up to 30kW for larger homes.

System boilers are modern and efficient. They are connected directly to the water mains, so don't need a cold water feeding tank like conventional boilers. But they do need a hot water storage cylinder. They differ to a combi boiler as hot water isn't instantly generated by the boiler when the hot tap is turned on, instead the hot water cylinder stores the hot water to be used when required and hot water pressure doesn't drop when simultaneus showers are running so they are perfect for homes with higher hot water requirements.

Baxi manufacture 3 different ranges of system boilers and have 9 different models to choose from within those ranges:

• Baxi 800
• Baxi 600
• Baxi Megaflow Compact

Baxi conventional boilers cost from £750 up to £1,500 for the boiler only and when fully installed between £2,250 and £5,000. With the final cost depending on the old and new boiler type, the location of the boiler and any additional extras.

• Baxi have premium and value ranges of conventional boilers. The value ranges are more cost effective on an initial outlay but may not be in the longer run as the premium ranges have much longer guarantees whichwill cut out any repair bills in teh future.

• The lowest priced conventional boiler ranges have 5 year guarantees, mid range 7 years and premium range 10 years.

• Baxi conventional boilers are available from 12kW capacity right up to 30kW so are perfect for small, medium and large homes. The price increases along with the capacity.

Conventional or regular or heat only boilers are the traditional boiler before proliferation of combi boilers. They require a hot water storage cylinder (usually found in an airing cupboard) and a cold water tank to feed the system ususally from the loft.

There are 4 ranges of Conventional boilers on offer from Baxi. Within those ranges they produce 18 different models to choose from:

• Baxi 800
• Baxi 600
• Baxi 400
• Potterton Titanium

Baxi gas boilers cost between £750 and £1,500 for the boiler supply and fully installed cost from £2,250 to £5,000. The full cost of the job will depend on the boiler type being removed, the boiler type being installed, whether there is a location change for the new boiler, generally the more complex the job the higher the total cost.

• Baxi produce premium boiler ranges and value focussed ones. The premium ranges have higher grade components, more advanced technology and longer guarantees and therefore cost more.

• The power output of the Baxi boiler impacts the price. The capacity in kW ranges from 12kW to 36kW and the price increases as the capcity does.

• Baxi gas boilers come with a 5 year, 7 year or 10 year guarantee. The more expensive boiler ranges have the longer guarantees and although the initial outlay is more for the flagship models the extra guarantee and higher grade compnents may reduce repair costs in the future so make them more cost effective.

Gas boilers can be combi, conventional or syetem and are powered by natural gas supplied by the mains gas network. The gas is the fuel which is burned inside the boiler to heat up water to flow into radiators and also baths, taps and showers.

Baxi have 7 different ranges of Gas boilers in production at the moment and across them offer a choice of 42 different boiler models:

• Baxi 800
• Baxi 600
• Baxi 400
• Baxi Platinum Compact
• Baxi Duo-tec Compact
• Potterton Titanium
• Baxi Megaflow Compact

Baxi LPG boilers cost from £750 to £1,500 (supply only) and from £2,250 to £5,000 fully installed, with the final price being subject to the type of job and how much parts and labour it will require.

• Baxi LPG boilers come in a range of capacity options from 15kW to 36kW and as combi and system boiler types. They do not offer conventional LPG boilers.

• Baxi have 3 ranges with an LPG option, the 800, 600 and 400. The 800 is the most premium of the ranges and has higher grade components and a longer guarantee than the 600 and likewise the 400, so is more expensive.

• LPG boilers form Baxi are aavilable with 5, 7 and 10 year guarantees.

LPG (Liquified Petroleum Gas) boilers are an alternative to gas boilers when the property isn't connected to the mains gas network. Typically LPG boilers are exactly the same as gas boilers but need an LPG conversion kit, apart from Baxi 800 (combi and system), 600 (combi and system) and 400 (combi only), which are pre-built to run on LPG and just need a slight adjustment when being installed.

Currently in production Baxi offer 3 different ranges of LPG boilers within which sit 15 different boiler models:

• Baxi 800
• Baxi 600
• Baxi 400

Baxi condensing boilers cost between £750 and £1,500 (boiler supply only) and from £2,250 to £5,000 with full installation. The specifics of the individual job, such as old boiler type and new boiler type, if the new boiler is in a different location and any additional extras, will detemine the final price.

• Baxi condensing boilers are available as combi, conventional and system boilers across premium and more value focussed ranges. The Premium boiler tend to have higher grade components and longer guarantees and therefore cost more.

• Baxi sell condensing boilers with 10, 7 and 5 year guarantees.

• The power output range of Baxi condensing boilers ranges from 12kW to 36kWs and increase in price as the capacity increases.

New boilers (gas, oil and LPG) manufactured today must, by law, be condesning boilers as they are more efficient and therefore produce fewer emissions (than non-condensing boilers) on a like for like basis.

Condensing boilers achieve this efficiency by recovering heat from exhaust gases and repurposing it back into the system.

Baxi currently produce 7 different ranges of condensing boilers and within those ranges offer 42 different boiler models:

• Baxi 800
• Baxi 600
• Baxi 400
• Baxi Platinum Compact
• Baxi Duo-tec Compact
• Potterton Titanium
• Baxi Megaflow Compact

Baxi Compact boilers cost between £750 and £1,500 for the boiler itself  and from £2,250 to £5,000 fully installed. The overall cost of the installation will depend on the complexity on the job, any boiler moves and hte boiler types (old and new).

• Baxi have 3 boiler ranges with compact in their name, but all the boilers they currently produce have the dimensions of a compact boiler.

• Baxi compact boilers are available as combi, system and conventional. And are available from 12kW up to 36kW outputs, with the price tending to increase as the capacity does.

• Baxi offer compact boilers with 5 year,  7 year and 10 year guarantees depending on the boiler range.

Compact boilers are just that, compact. In fact they are designed specificaaly to fit into tight spaces, like a standard kitchen cupboard. Available as combi, conventional and system boilers, compact boilers are typically as effective as boilers with larger casings. They are small, but perfectly formed.

All 7 of the current Baxi boiler ranges are compact boilers even if they don't all say so in the name and there are 42 different compact boiler models:

• Baxi 800
• Baxi 600
• Baxi 400
• Baxi Platinum Compact
• Baxi Duo-tec Compact
• Potterton Titanium
• Baxi Megaflow Compact

Baxi boiler range prices

Baxi currently sell 7 ranges of boilers. They have value and more premium offerings, cover gas and LPG fuel options and of course produce combi, system and conventional boilers. To make sure you can choose the right Baxi boiler model to suit your requirements we now deep dive into each range.

Baxi 800 prices

A Baxi 800 boiler costs between £1,200 and £1,500 (boiler only) and from £2,700 to £3,500 fully installed. The price is based on a like for like boiler type replacement in the same loactaion as the old boiler. Additions to the installation will ususally be reflected in a high total cost.

• The least powerful 800 units are £300 less than the most powerful which accounts for the range in boiler only prices.

• This premium boiler range from Baxi comes with a 10 year guarantee.

Baxi 800 boiler range

The Baxi 800 range was updated in 2023 and is one of the premium boiler ranges form Baxi and is available as a combi, a system and a conventional boiler. And they come in a wide range out power outputs so suitable for all but the very largest homes.

• The combi and system boilers come already LPG compatible and don't require any additional parts

• They are available, in each boiler type, in output levels suitable for smaller homes, medium sized homes and large homes and can cope with high hot water demands from multiple bathrooms.

• Compact design for added convenience to enclose the boiler in small cupboards to help maintain the aesthetics of your home.

• High grade corrosion resistant brass hydraulics help to increase workable life and reduce breakdowns.

Baxi 600 prices

The Baxi 600 boiler will cost from £800 to £1,300 for the boiler supply and then with full installation it will cost from £2,300 to £3,300 based on a same boiler type replacement job in the same location.

• The range on boiler only costs is mainly due to boiler capacity with the range topping 30kW conventional 630 boiler being £500 more than the entry level 24kW combi boiler.

Baxi 600 boiler range

The Baxi 600 was launched in 2019 and then updated in 2023 to the current line up detailed below. It is available as a combi, system and regular boiler in various power output levels.

• There are 3 capacity outputs for the combi and system boilers and 5 for the conventional which covers small, medium and large homes.

• As with it's bigger brother the 800, the 600 combi and system models are LPG compatible without additional conversion kits.

• It follows Baxi's design stance that all their boilers are compact boilers that can fit into a standard kitchen cupboard.

• Comes with a 7 year guarantee as standard.

Baxi 400 prices

A Baxi 400 boiler costs from £750 to £1,150 for the boiler only and fully installed costs between £2,250 and £3,000, with the price being based on a like for like boiler type replacement. Any additonal complications or extra parts to the job will likely increase the cost.

• The price range for the boiler only is driven by the capacity of the boiler with the range topping 30kW conventional unit costing the most

Baxi 400 boiler range

The Baxi 400 comes as a conventional boiler (launched in 2013) and a combi boiler (launched in 2024). It is more of a value range compared to it's big brother the 800.

• Comes as standard with a 5 year guarantee.

• Available in 3 output levels as a combi and 5 as a conventional so covers nicely requirements for small , medium and large homes.

• Is a compact boiler so fits neatly in a standard sized kitchen unit.

Baxi Platinum Compact prices

A Baxi Platinum Compact boiler costs between £1,100 and £1,300 for the boiler itself and from £2,600 to £3,300 for full installation (same boiler type being replaced in the same location, should the job be more complex then the price will most likely go up).

• The price of the boiler itself is reflected by the capacity of the unit. The least powerful Platinum compact boiler (25kW) is £200 cheaper than the top of the range 36kW version.

Baxi Platinum Compact boiler range

The Baxi Platinum boiler range was initially launched in 2013 and then upgraded to the current line up in 2020. It's one of Baxi's premium ranges of boilers, only available as a combi, and not LPG compatible.

• Come with a 10 year guarantee as standard as it's a premium range of boilers.

• Available in 3 output levels of 25kW, 30kW and 35kW so best fit for medium to large homes.

• Can fit inside a standard kitchen cupboard.

Baxi Duo-tec Compact prices

A Baxi Duo-tec Compact boiler costs from £900 to £1,100 (boiler suppy only) and fully installed from £2,400 to £3,000. The price reflects a like for like boiler type replacement job in the same location, enhancements to the job will be reflected in higher costs.

• The output of the boiler dictates the price with the most powerful 36kW boiler being £200 more than the smaller capaicty 25kW unit.

Baxi Duo-tec Compact boiler range

The Baxi Duo-tec range first got brought to market by Baxi in 2007 before being overhauled in 2015 into the boiler on sale today. Over it's lifetime there were conventional boilers in the range but today is it comprised of 3 combi boilers and no LPG options.

• The range includes a 25kW, 30kW and 36kW model so is applicable to small, medium and larger homes.

• They come with a 7 year guarantee as standard

• And as with all current boielrs on sale from Baxi it is compact so will fit into a standard kitchen unit.

Potterton Titanium prices

A Potterton Titanium boiler costs between £950 and £1,150 for the boiler only and from £2,450 to £3,000 with full installation based on a like for like boiler type and same location. More complicated jobs will require additaionl parts and labour and therefore cost more.

• The biggests driver of the boiler only price is the boiler capacity. The smallest boiler in the Titanium range, the 12kW unit, is £200 cheaper than the 30kW biggest capacity boiler in the range.

Potterton Titanium boiler range

The Potterton Titanium is a value range of conventional boilers from Baxi. The Potterton brand was acquired by Baxi in 1999 and is still utilised as a customer facing brand today. The Titanium conventional boiler is perfect for small to large homes which have a seperate hot water storage cylinder and cold water tank.

• On sale as 12kW, 15kW, 18kW, 24kW and 30kW capacity conventional boilers.

• Very compact dimensions make it a perfect boiler to be hidden in a standard kitchen cupboard.

• Super light weight boiler at only 19.5kg.

• Can not be converted to LPG, it only runs on mains gas.

Baxi Megaflow Compact prices

A Baxi Megaflow Compact boiler costs from £950 to £1,100 for the boiler on its own and with full installation costs £2,450 to £3,000 for a like for like same location installation job. If the job is more complicated and involves changing boiler types or different install locations the price may go up.

• The capacity of the Megaflow compact has the biggest impact on the boiler only price with the 24kW unit being £150 more than the less powerful 15kW unit.

Baxi Megaflow Compact boiler range

The Megaflow Compact is Baxi's value range of system boilers, which is carefully packaged to fit neatly inside standard kitchen cupboards. Launched in 2021 it is perfect for small to medium sized homes with up to 2 bathrooms and is available in 3 different sizes:

• Available as 15kW, 18kW and 24kW capacity boilers and manufactured in the UK.

• Light weight boiler at only 28.1kg which modulates to adjust gas consumption to heating demands.

• Only available as a gas boiler and cannot be converted to run on LPG.

Summary on Baxi boiler prices

Thanks for reading, we hope you found that useful. You should now have all your need to know about Baxi boiler prices, the different types of boilers Baxi produce and how much each model costs for the boiler and the boiler plus installation.

Now you just need to compare Baxi Boiler Prices