Boiler repair in Sofia
Is the water heater not heating, heating slowly, leaking, tripping the fuse or making an unusual noise?
RotoRem carries out diagnostics, repair, installation and dismantling of electric water heaters in homes in Sofia and around the city.
Visit and diagnostics
30 €
Phone
089 834 0982Diagnostics and repair of boilers
Before replacing a part, determine the cause of the problem.
In the absence of hot water, the heater, thermostat, thermal protection and electrical connections can be checked. In case of leakage, check the flange, gaskets, connections and condition of the unit.
Boiler repair is part of RotoRem's services for repair of household appliances in Sofia.
RotoRem customer reviews
See what our customers say about our repair services
Dimitar Dimitrov
May 30, 2026
I am very pleased with Rosen. Even though his schedule was full, he managed to come and repair the water heater. I called him in the morning and after lunch between 15.20 and 16.20 he bought and replaced 2 radiators. The water heater works perfectly.
Call to schedule your repair appointment
What boiler problems do we repair?
The boiler does not heat up
The heater, thermostat, thermal protection and control are checked.
The boiler heats up slowly
The cause may be related to the heater, build-up or temperature control.
The boiler is leaking
The flange, gaskets, connections and water reservoir are checked.
The boiler trips the fuse
Electrical components and insulation are checked.
The boiler makes noise or crackling
The reason may be related to accumulations, heating or another technical problem.
Not enough hot water
The heater, thermostat and settings are checked.
The boiler does not turn on
The power supply, thermal protection and electrical components are checked.
What we check during diagnostics
Depending on the symptom, the following can be checked:
- the heater
- the thermostat
- thermal protection
- the flange
- the seals
- the safety valve
- electrical connections
- the power supply
- management
- the magnesium anode
- the condition of the aquifer
First, the cause of the specific malfunction is determined, and then the necessary repair is determined.
Visit and diagnostics: 30 €
Water heater parts and systems we inspect and repair
Heater
It doesn't heat up
Thermostat
Incorrect temperature
Thermal protection
The device is not working
Flange
Current
Gasket
Current
Safety valve
Pressure or water problem
Magnesium anode
Aquifer protection
Electrical connections
Power problem
Management
Wrong job
| A part or system | Related problem |
|---|---|
| Heater | It doesn't heat up |
| Thermostat | Incorrect temperature |
| Thermal protection | The device is not working |
| Flange | Current |
| Gasket | Current |
| Safety valve | Pressure or water problem |
| Magnesium anode | Aquifer protection |
| Electrical connections | Power problem |
| Management | Wrong job |
Not every failure needs to result in part replacement. In many cases, diagnostics indicate another problem in the system, so the specific repair is determined after inspection.
The boiler does not heat the water
In the absence of hot water, it is not automatically assumed that the heater has burned out.
The heater, thermostat, thermal protection, electrical connections and power supply are checked.
Water heater leak
The leak should be checked as soon as possible.
Water can come from the flange, gasket, relief valve, connections, or water reservoir.
In the case of some damages, it must be assessed whether the repair is safe and economically justified.
Strange noise or crackling from the water heater
Unusual noise during heating can be related to accumulations, heater operation, water movement or other technical reason.
If the water heater starts leaking strange noise or popping noise, the change in device behavior should not be ignored.
Accumulations in the water heater
When opening the water heater, the condition of the heater and the presence of accumulations can be checked.
If necessary, cleaning is carried out according to the condition of the device.
Installation and dismantling of boilers in Sofia
RotoRem installs and dismantles boilers. During installation, the position, fastening, water connections, electrical connection and operation after installation are checked.
Another tech problem at home?
RotoRem performs and repair of ovens in Sofia at address.
Boiler repair prices in Sofia
| Service | Price |
|---|---|
| Visit and diagnostics | 30 € |
| The boiler does not heat up | After diagnostics |
| Heater replacement | After diagnostics |
| Thermostat problem | After diagnostics |
| Current | After diagnostics |
| Fuse problem | After diagnostics |
| Cleaning | After diagnostics |
| Assembly | Upon agreement |
| Dismantling | Upon agreement |
The final price depends on the damage found, the work required and the spare parts used.
Boilers we service
RotoRem works with vertical, horizontal and compact electric water heaters.
Eldom, Ariston, TESY, Diplomat, Bosch and other brands served.
TESY
Ariston
Atlantic
Eldom
Diplomat
Gorenje
AEG
Beko
When calling, it's a good idea to state the make, model, and how the problem occurs.
Real boiler repairs in Sofia
Tesy Water Heater
Problem: Lack of power supply to outlet, water heater switch and light switch.
District: Center
Determined Cause: The inspection found burnt wires caused by loose electrical connections.
Repair performed: The damaged socket, water heater switch and light switch were replaced and the electrical connections were restored.
Tesy Water Heater
Problem: Need to replace an old water heater with a problem in the switch and wiring.
District: Ovcha Kupel
Determined Cause: During the inspection, burnt wires and a faulty switch for turning the water heater on and off were found.
Repair performed: The old water heater was dismantled and replaced with a new one. Rewired and new switch installed.
Eldom Water Heater
Problem: The boiler does not heat normally and periodically turns off the fuse.
District: Druzhba
Determined Cause: A defective heater with significant limescale build-up was found.
Repair performed: The damaged heater was dismantled and replaced with a new one. After the replacement, the water heater works normally.
How to repair a water heater
You are contacting RotoRem
You describe the symptom — no hot water, leak, noise, or other problem.
We arrange a visit
A technician visits the specified address.
Diagnosis
The components related to the specific problem are checked.
Repair information
We explain what was found and what repairs are needed.
Repair and test
After the repair, the boiler is checked for normal and safe operation.
Boiler repair in Sofia and around Sofia
RotoRem serves Sofia and the surrounding area, including Center, Lozenets, Ivan Vazov, Krasno Selo, Mladost, Darvenitsa, Dianabad, Strelbishte, Lyulin, Obelya, Ovcha Kupel and Gotse Delchev.
Frequently asked questions
Can the water heater be repaired at my home?
Yes. RotoRem provides diagnostics and water heater repair at customers' homes in Sofia and nearby areas.
Why won't the water heater heat?
The heating element, thermostat, thermal cut-out, and power supply are checked.
Why is the water heater leaking?
The cause may be the flange, seal, valve, connection, or tank.
Why does the water heater trip the breaker?
The cause may be related to the heating element, electrical leakage, or another electrical component.
Do you provide installation and removal?
Yes. RotoRem installs and removes water heaters in Sofia.
Do you work with brands such as TESY and Eldom?
Yes. RotoRem services Eldom, Ariston, TESY, Diplomat, Bosch, and other water heater brands.
How much does diagnostics cost?
The visit and diagnostics in Sofia are 30 €.
Do you provide a warranty?
Warranty terms depend on the repair and parts used. Specific conditions are confirmed with the technician.