Gas Safe registered engineers and Baxi Works members. Baxi, Main and Potterton faults tested, not guessed: E133, E110, E119, pressure loss and no hot water.
We repair Baxi boilers across Birmingham and the Black Country: the Duo-tec, Platinum and EcoBlue, the 400, 600 and 800, and the Megaflo System. We also repair Main and Potterton boilers, which are Baxi's sister brands. In office hours (Mon–Fri 8am–5.30pm) the callout is £99, which covers a full diagnosis and the first hour of labour, and you get the total price before we fit anything. We carry common Baxi spares on the van. We are Gas Safe registered (594385) and members of Baxi Works, Baxi's installer scheme, and every repair finishes with a flue gas analyser reading.
Four details and we will get back to you to arrange a time. Prefer to talk? Call 07413 385767.
£99 in office hours (Mon–Fri, 8am–5.30pm) covers attendance, diagnosis and the first hour. Parts and any further work are quoted and agreed before we carry on. Out of hours, the price is quoted by phone before we set off.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked. Full price list
Smell gas now? Do not use this form or wait for a reply. Call the National Gas Emergency Service free on 0800 111 999 (24 hours). If you are using a mobile, make the call from outside. Open doors and windows, do not switch electrics on or off, do not smoke or use naked flames, and turn the gas off at the meter if it is safe to do so, unless the meter is in a cellar or basement. Once the supply has been made safe, we can trace and repair the fault.
Older Baxi boilers show a three-digit E code; the newest 600 and 800 models use a longer format. Either way, the code tells us where to start testing, not which part has failed.
| Code | What it means | Usual causes |
|---|---|---|
| E133 | Ignition or gas supply fault | Frozen condensate pipe, gas supply, electrode, gas valve |
| E110 | Overheat lockout | Low pressure, pump, airlock, sludge, closed valves |
| E119 / E118 | System water pressure too low | Leak on the system, expansion vessel, pressure relief valve |
| E125 | Circulation fault | Pump, airlock, blockage |
| E160 | Fan fault | Fan or its wiring |
| E168 | General fault, often after a power interruption | Worth one reset; call if it returns |
Press reset once. If the code comes back, stop resetting and ring us with the code and the model. Do not keep resetting an overheat (E110) or fan (E160) fault. The newest Baxi 600 and 800 boilers use a different format, such as E.04.10 for an ignition lockout and H.02.07 for low pressure. Our guide lists both sets of Baxi fault codes, with Main and Potterton in their own sections, checked against the manufacturers' manuals.
The Baxi Duo-tec, Platinum, EcoBlue and Assure, the 400, 600 and 800, and the Megaflo System. Main and Potterton are Baxi's sister brands and several of their boilers are built on the same designs, so we repair the Main Eco Compact and Potterton boilers on the same terms. When you call, have the model name and the code on the display, or send a photo by WhatsApp.
There is a point at which a boiler is not worth repairing: past twelve years old, on its second or third major part, with a corroding heat exchanger. If yours is there, we will say so and put the repair price and the replacement price side by side. A Baxi or Main Eco Compact combi swap is £1,999 with a five-year warranty, and a Baxi 600 is £2,199 with seven years, both confirmed in writing after a free survey.
Some boilers are past repair. In Erdington in October 2026 a landlord's Potterton Powermax had been condemned and labelled Do Not Use, leaving the tenant without heating or hot water. We took it out and fitted a wall-hung Baxi 400 combi with a magnetic filter and scale reducer, with the new flue properly supported.
Baxi, like every manufacturer, ties its guarantee to an annual service. A basic service is £95 and includes a combustion check on the analyser; an intermediate service is £125 and a full strip-down is £185 with gaskets and an inhibitor top-up included.
One Baxi 800 we have serviced every year since it was installed had its first full strip-down at year five: burner and fan off, heat exchanger brushed clean, new gaskets and seals, then the heating system cleansed and dosed with inhibitor. The case study shows what five years of normal use looks like inside a well-kept boiler.
Three jobs written up with the photos our engineers took: a repair, a service and a replacement. More are added as we do them.
The boiler had locked out on low pressure and the customer could not find the filling loop to top it up. We found it behind the boxing, restored the pressure and checked for leaks, then got the heating going with new batteries in the wireless thermostat.
Read the case studyBurner off, heat exchanger brushed clean, gaskets replaced. Then cleaner circulated through the radiators for an hour, the system drained, and corrosion inhibitor added.
Read the case studyThe Powermax had been labelled Do Not Use, so the landlord asked us to quote. Out came the floor-standing boiler and hot water store; in went a wall-hung Baxi combi with a Sentinel filter and scale reducer, the system flushed and the vertical flue properly supported.
Read the case studyWe also repair Worcester Bosch, Vaillant, Ideal and Glow-worm boilers. Every other make is covered on our main boiler repair page.
| Job | Price |
|---|---|
| Baxi fault diagnosis + first hour of repair (Mon–Fri 8am–5.30pm) | £99 |
| Outside office hours | Quoted by phone before we set off |
| Parts | Quoted before we fit |
| Parts-only warranty on repairs | 12 months |
| Basic boiler service (combustion check included) | £95 |
| Intermediate boiler service | £125 |
| Full strip-down service (gaskets and an inhibitor top-up included) | £185 |
| Baxi or Main Eco Compact combi swap, fitted (5-year warranty) | £1,999 |
| Baxi 600 combi swap, fitted (7-year warranty) | £2,199 |
The £99 is a fixed charge for attendance, diagnosis and the first hour in office hours (Mon–Fri 8am–5.30pm); it is not the price of every repair, and parts and further work are quoted and agreed before we carry on. Service prices are the price for the job as described, installation prices are confirmed in writing after a free survey, and out-of-hours work is quoted by phone before we set off. No travel charge within 10 miles of B20 2JS; further out, £2 per mile may apply, agreed before booking. How our prices work.
£99 diagnosis + first hour
£99 in office hours (Mon–Fri, 8am–5.30pm) covers attendance, diagnosis and the first hour. Parts and any further work are quoted and agreed before we carry on. Out of hours, the price is quoted by phone before we set off.
No travel charge within 10 miles of B20 2JS. Further out, £2 per mile may apply — always agreed before anything is booked.
In office hours (Monday to Friday, 8am to 5.30pm), £99 covers the callout, a full diagnosis and the first hour of labour. Once we know the fault you get the total price, including any part, before we carry on. Out of hours, we quote by phone before we set off.
E133 is an ignition or gas supply fault: the boiler tried to light and could not prove a flame. In freezing weather, check the white plastic condensate pipe outside and thaw it with warm, not boiling, water, then reset once. If the code comes back, the cause is likely to be the gas supply, the electrode or the gas valve, and that is work for a Gas Safe registered engineer.
E110 is an overheat lockout. The boiler is making heat that is not being carried away, usually because the water has stopped moving. Check the pressure gauge reads between 1 and 1.5 bar when cold and that the radiator valves are open, then try one reset. If E110 returns, stop using the boiler and book an engineer: repeatedly resetting an overheat lockout is not safe.
No manufacturer approves independent repairers, and we would rather say so. We are Gas Safe registered (594385) and members of Baxi Works, Baxi's installer scheme, which is a loyalty scheme and not an approval. For repairs we work as independent engineers: we test before replacing anything, and we will tell you when a repair is not worth doing.
Yes. Main and Potterton are Baxi's sister brands, and several of their boilers are built on the same designs. We repaired a Main Eco Compact in Wednesbury that had locked out on E118, and replaced a condemned Potterton Powermax in Erdington with a Baxi 400 combi. Both are written up with photos.
Repair it unless it is past about twelve years old, on its second or third major part, or its heat exchanger is corroding. We check first and show you what we find. If it is time, a Baxi or Main Eco Compact combi swap is £1,999 with a five-year warranty and a Baxi 600 is £2,199 with seven years, confirmed in writing after a free survey.
We cover Birmingham and the surrounding towns. Pick your area for local detail.
From £1,999 fitted
From £95
£90 (boiler + cooker)
£99 (Mon–Fri 8am–5.30pm)
From £99 in office hours
From £550, up to 10 radiators
£99 in office hours covers diagnosis and the first hour. You get the total price before we fit anything.
