Baxi Solo Repairs – Welcome

First of all, thanks for visiting Baxi Solo Repairs.

I’m Mike Bryant, also known as Mike the Boilerman. For those who haven’t already encountered me on the net, where have you been?! I specialise in mending boilers. In particular I like repairing the awkward, the older and the unusual boilers that many technicians are inclined to announce cannot be repaired and therefore must be replaced. This is sometimes true but certainly not always. The Baxi Solo is a great example of this. Most Baxi Solo breakdowns are fully repairable, especially on the later versions, the ‘Solo 2′, the ‘Solo 3′ and the ‘Solo HE’.

I’ve written this site specifically to help owners of Baxi Solo boilers understand them better and and their technicians who repair them. I list the common faults and problems and the fixes. There are several versions of the Baxi Solo which differ considerably in detail so I have a written a page for each. See the links on the left.

Anyway, a bit about the history of the Baxi Solo…

The Baxi Solo was first introduced in around 1980 and production of the latest version continues today. There are five versions of the Baxi Solo; the Solo RS, the Solo WM series, the Solo 2, the Solo 3 and the current Solo HE.

The original Baxi Solo RS was a simple natural convection boiler with cast iron heat exchanger. Baxi ceased production about 25 years ago and there are very few still in use. Even so I’d expect any of these old Baxis still surviving to have a good chance of being repairable, so simple was the design.

The Baxi Solo WM was next. Instead of being natural draught (where flue gasses leave the boiler by natural convection), an electric fan and automatic electronic spark ignition were used. This improves fuel efficiency as the boiler can be designed in such a way that it no longer convects warm air through the flue when the boiler is hot but the gas burners are OFF. The absence of a permanent pilot light further saves on gas.

The Baxi Solo 2 was a complete re-design using a smaller and far more compact heat exchanger, still cast iron but no longer suffering from the tendency of the previous versions to crack and leak.

The Baxi Solo 3 is very similar to the solo 2 both outside and inside, the main differences being some changes to the fan design which further improve fuel efficiency, and a minor facelift to the outer case design.

The Baxi Solo HE is the condensing version of the Solo. HE stands for ‘high efficiency’. By adding a second heat exchanger (called a recuperator) to further cool the flue gasses, a fuel efficiency of 89% is achieved. A downside to raising the efficiency above about 80% is that flue gasses are cooled so much that water vapour contained in them condenses into liquid water (known as ‘condensate’). This needs collecting and draining away hence the need for condensing boilers such as the Baxi solo HE to have a drain connection.

I’ll finish by saying I live in Reading, Berkshire. Most of my work is in Berkshire, Hampshire, south Oxfordshire, Surrey and west London but if you are outside this area and having problems getting your Baxi Solo fixed, then I’m perfectly happy to visit. I’ll go anywhere if necessary! The only trouble with this is, from your point of view, is that I charge for all the time I spend repairing a boiler, and this includes the time spent travelling to and from site. This means the further you live from Reading the less economically viable it is to get me to visit.

Alternatively I’m happy to give email advice to anyone wanting it, but not telephone advice. I had to stop that years ago when the weight of calls grew too great.

For my main site, check out

Once again, thanks for visiting.

Mike Bryant, AKA Mike the Boilerman.


First created 10th April 2014
Last updated 27th March 2015