Boiler not firing up, losing pressure or showing an error code?
We repair boilers and water heaters of all brands in Barcelona and the metropolitan area. Our own technicians, no subcontractors, since 1953.
Monday to Friday, 8am to 6pm. Winter emergency service for clients with a maintenance contract. No call-outs at weekends or on public holidays.
What is wrong with your boiler?
Find your symptom: we tell you whether you can fix it yourself or need a technician.
It will not start
Low pressure, ignition failure or a disconnected thermostat.
Sometimes a quick fix
It keeps losing pressure
A small leak in the circuit or a worn expansion vessel.
Needs a technician
Hot water but no heating
The three-way valve is stuck.
Needs a technician
Banging or whistling noises
Limescale build-up in the heat exchanger.
Professional cleaning
It switches itself off
Faulty temperature sensor or overheating.
Needs diagnosis
An error code on the display
It depends on the code and the brand. Tell us when you call and we bring the part.
Ask us
How much does a boiler repair cost?
It is difficult to give an exact price without seeing the appliance, but these are the typical ranges for the most common repairs:
| Type of repair | Approximate cost (labour + callout) |
|---|---|
| Diagnosis + basic checks | €60–80 |
| Pressure recharge + leak check | €80–120 |
| Three-way valve replacement | €120–180 + part |
| Heat exchanger cleaning | €100–150 |
| Temperature sensor or thermostat replacement | €90–140 + part |
| Circuit board replacement | €150–250 + part |
Spare parts are quoted separately once the fault has been diagnosed. We always confirm the cost before starting any work.
Tip: if you have a maintenance contract with us, labour and callout costs for all breakdowns are already included. Find out about our maintenance contracts.
How the repair service works
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You call or message us.
We help you rule out the simple causes over the phone.
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We book the visit.
Within 24 working hours with a contract, 48 hours without one.
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Diagnosis at your home.
The technician identifies the fault and tells you the cost before touching anything.
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Repair.
Most faults are solved on that visit. If a part is missing, we leave the unit working where possible.
Before you call us, check this
Two minutes that sometimes save a call-out. If the boiler still fails afterwards, call us.
- The boiler is plugged in and switched on.
- The pressure gauge reads between 1 and 1.5 bar.
- The gas valve is open.
- The thermostat is on, with fresh batteries if it uses them.
- The radiator valves and the cold water inlet are open.
If you smell gas: do not touch any switch, ventilate the room and call your gas supplier’s emergency line. Then call us.
Technical assistance form
Frequently asked questions about boiler repair
Do you repair all boiler brands? Yes. We work with all major brands. We are an official Junkers Bosch service centre, but we also repair Vaillant, Baxi, Ariston, Ferroli, Fagor and others without any problem.
Do you offer an emergency service? We work Monday to Friday, 8am to 6pm. With a maintenance contract a technician comes within a maximum of 24 working hours; without a contract, within a maximum of 48 working hours. We do not offer emergency call-outs at weekends or on public holidays. Clients with a maintenance contract also have an out-of-hours emergency service during the winter period.
Do you provide a quote before carrying out repairs? Always. The technician diagnoses the fault and confirms the estimated cost before starting any work. If you decide not to proceed, only the diagnostic visit is charged.
What happens if the repair requires a part that is not in stock? We will inform you of the delivery time and, where possible, keep the boiler running with a temporary fix while the part arrives.
Is it worth repairing or better to replace the boiler? It depends on the age of the boiler and the type of fault. As a general rule, if the boiler is less than 12–15 years old and the repair does not exceed 40% of the cost of a new one, it is worth repairing. We will advise you during the visit with no obligation.
Areas we cover
We serve the whole of Barcelona from our base in Gràcia (c/ Torrent de l’Olla 129): Gràcia, Eixample, Sant Martí, Sarrià-Sant Gervasi, Horta-Guinardó, Les Corts, Sants-Montjuïc, Sant Andreu, Nou Barris and Ciutat Vella. We also work across the metropolitan area: L’Hospitalet de Llobregat, Badalona, Santa Coloma de Gramenet, Sant Adrià de Besòs, Cornellà, Esplugues, Sant Cugat del Vallès, El Prat, Gavà, Viladecans and Castelldefels.
Useful guides
Areas we cover
We serve the whole of Barcelona from our base in Gràcia (c/ Torrent de l’Olla 129): Gràcia, Eixample, Sant Martí, Sarrià-Sant Gervasi, Horta-Guinardó, Les Corts, Sants-Montjuïc, Sant Andreu, Nou Barris and Ciutat Vella. We also work across the metropolitan area: L’Hospitalet de Llobregat, Badalona, Santa Coloma de Gramenet, Sant Adrià de Besòs, Cornellà, Esplugues, Sant Cugat del Vallès, El Prat, Gavà, Viladecans and Castelldefels.
Useful guides
- When to replace a gas boiler: 7 signs
- Intergas boiler error code 4
- Sime boiler error ALL 02
- Gas boiler installation in Barcelona
Boilers and water heaters we install
- Bosch C6000 W: the most complete condensing range, from 25 to 36 kW.
- Bosch C4300i W: compact condensing boiler with app control.
- Bosch GC1200W: the most affordable option.
- Vaillant ecoTEC Intro.
- Bosch gas water heaters.
- See all boilers: the price includes installation and removal of the old unit.