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OKGas Boiler

Do not shower under cold water because your gas heater has broken down: OKGas Calentador includes unlimited repairs of your home's installation and gas heater. And, so that you never have to worry about it again, we also take care of the initial diagnosis and inspections every 2 years to check it is in good condition. In addition, if you have contracted the gas with us, the cost of the MPO (Mandatory Periodic Inspection) of the gas installation is included in the price. Service offered by Endesa X Servicios, S.L.



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Online Discount

Get a 20% discount for the first year.

Peace of mind

Endesa’s network of qualified technicians is backed up by rigorous quality controls.

In less than 3h

We will arrive at your home in less than 3 hours to repair breakdowns.

24h service

Permanent assistance: 24 hours a day, 365 days a year.

Free call

Free telephone assistance: 900 85 86 85. 

Extras included

Call-out fee and 3 hours of labour for each repair included.


The package includes a biennial service of your gas installation and boiler, to anticipate possible breakdowns that could increase your energy consumption. OKGas Boiler keeps the installation safe, extends equipment life and on average reduces breakdowns by 2/3, thus optimising gas consumption and, with it, the amount of your bill.

Whenever your boiler breaks down, you can contact the OKGas Boiler technical department and a technician will visit your home in less than 3 hours to repair the breakdown (the travel and the first 3 hours labour are free). Customers of OKGas Boiler have access to a free telephone number to request assistance, operational 24 hours 365 days a year: 900 85 86 85. Unlimited number of repairs.

OKGas Boiler enables you to comply with the regulations in force (R.D. 919/2006) and Thermal Installations in Buildings (R.D. 1027/2007), which by law require a biennial revision of gas installations and equipment. In addition, the OKGas Boiler package includes the cost of the Mandatory Periodic Inspection of the gas installation every 5 years which is obligatory, as long as you have also contracted the gas with Endesa Energía.

Other packages only cover the boiler and not the gas installation, or only cover maintenance and not repairs. OKGas Boiler takes care of everything.

OKGas Boiler covers the cost of the Mandatory Periodic Inspectionvalued at approximately €60.

You can pay for OKGas Boiler in convenient instalments with your gas bill and with a 20% discount for the first year.

You have a professional of the Endesa Networkendorsed by rigorous quality controlswho will repair any breakdowns that occur, in addition to flexibility in arranging the visit. Plus, the number of repairs is unlimited.

Any costs of travel or the first 3 hours of labour on each visit are also avoided (parts are to be paid by the Customer, in case a repair of the gas installation or boiler is necessary). In exceptional circumstances, in which the repair time exceeds 3 hours, we undertake to provide a free prior quotation.

Endesa exhaustively controls adherence to quality criteria and to the deadlines set for undertaking the work. In addition, random calls are also made regarding the operations carried out as well as satisfaction surveys, in which Customers usually give excellent ratings above 8 points out of 10.

Servicing of the installation prevents, mainly, any possible gas leaks which would affect the safety of the inhabitants of the dwelling and, in addition, would mean an increase in energy consumption and the amount of bills.

Such inspections are of a preventive nature to check the condition, safety and correct operation of the gas installation and boiler, in accordance with legal and technical regulations.

During a technical inspection, the following is carried out:

  • A check of all the installation's components (keys, fasteners, pipes, nozzles, ventilation, etc.).
  • Necessary adjustments to guarantee the safety of the installation and, to the greatest extent possible, reduce gas consumption, number of breakdowns or future failures of the equipment.
  • Checking for leaks in the gas installation.
  • Checking and adjusting the equipment’s operation.
  • Combustion analysis and submission of the result.
  • Mandatory Periodic Inspection of the gas installation.
  • Mandatory revision of Regulations for thermal installations in buildings (in Spanish, RITE).
  • It turns itself off and on while it's running.
  • The flame is low and yellow.
  • It works properly for a few minutes and then turns off and does not turn on.
  • It doesn't heat the water properly.
  • When it is working, it has small water leaks.

The contract lasts for one year and it is automatically extended on an annual basis. However, both the Customer and Endesa may terminate the contract giving written notice of at least one month prior to the expiration date.

The 20% discount on the service fee lasts for 1 year from the start date of the contract.

The service will be billed by Endesa X on a monthly or annual basis, depending on what was agreed. If you have contracted several services at the same address, they will all appear together on a single Endesa X invoice. 

In addition, if you have contracted an electricity or gas supply with Endesa Energía at the same address, the service bill will be included on the same document as the energy bill, and both amounts (services and energy) will be itemised together in your account. The billing frequency in this case will be as indicated in the energy contract.


General conditions of services

PDF (0.75MB) Download

OKGas Heater maintenance service

PDF (0.14MB) Download

By subscribing to this new contract you accept the start of the service contracted during the cancellation period.

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