Tariff One Gas + OKGas Heater

With the One Gas + OKGas Heater tariff you will benefit from a single price for the gas you consume, free from surprises. Furthermore, you will enjoy unlimited repairs of your home's installation and heater.

In addition to a fixed price and urgent breakdown repair service, the One Gas + Maintenance OKGas Heater Tariff includes:

The initial diagnosis and check-up service every 2 years to make sure it is in good condition. The cost of the IPO (Mandatory Periodic Inspection) of the gas installation is included in the price. Thanks to the inspection service, your installation will be kept in excellent condition and thus reduce your electricity consumption and offer you savings in your electricity bill.



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Advantages of the One Gas + OKGas Heater tariff

Urgent breakdown repair service in less than 3 hours

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

Attention 24h

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

Extras Included

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

Digital bill

You will receive all your bills by email as soon as they are emitted. Much faster than the postman. Save time with Endesa online billing.










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Frequently Asked Questions

Prices with taxes (*)

Tariff group Fixed term €/month Variable term €/kWh
RL1 7,441500 €/month 0,071208 €/kWh
RL2 13,431000 €/month 0,061105 €/kWh
RL3 26,015000 €/month 0,058382 €/kWh

(*) Prices include VAT (21%) and do not include Hydrocarbon Tax (gas: 0.00234€/kWh). VAT should be replaced by the corresponding indirect tax, IGIC in the Canary Islands (3%) IPSI in Ceuta and Melilla (1%).

With Endesa's One Gas tariff, you benefit from a fixed price and can make all the arrangements you need online. Enjoy competitive prices at all times, not just during the first year. We offer you tariffs with Endesa's best online price.

  • The One Gas tariff is a 100% online rate, so you can manage all your administrative tasks quickly and easily, 24 hours a day, in the "Customer Area" section within the online office or by downloading our mobile app. Save time with Endesa's online service.
  • You can contract only what you need, without the obligation of contracting an additional service but with the possibility of contracting one if you wish.
  • You have no commitment to remain.
  • You will receive an email indicating the date and the link through which you will be able to access your electronic bill when it becomes available.
  • Arranging the tariff is simple and easy, there are no extra costs and no downtime in your supply. Streamline your efforts with Endesa's online service arrangement.
  • One rate for ALL customers, new and existing ones.


With the One Gas Tariff:

  • You’ll enjoy Endesa’s best online price.
  • You will be able to carry out all your administrative tasks 100% online.
  • You have no commitment to remain.

The One Gas + OKGas Heater tariff provide you with a review of the installations to mainly prevent possible gas leaks that would affect the safety of the property's inhabitants in addition to increasing energy consumption and bills.

Endesa's inspection services are preventive visits to check the condition, safety and proper functioning of the gas and heater installations, pursuant to the provisions of the legal and technical regulations.

During a technical inspection, the following is carried out:

  • A check of all the installation's components (taps, fastenings, pipes, nozzles, ventilation, etc.).
  • Necessary adjustments to guarantee the safety of the installation and, to the greatest extent possible, reduce the gas consumption, number of breakdowns or future failures of the equipment.
  • Checking for leaks in the gas installation.
  • Checking and adjusting the operation of equipment.
  • Combustion analysis and submission of the result.
  • Mandatory Periodic Inspection of the gas installation.
  • Mandatory Regulations for Thermal Installations in Buildings (in Spanish, RITE) service.
  • 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.


Terms of business

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General conditions of services

PDF (0.97MB) Download

One Gas rate conditions

PDF (0.4MB) Download

OkGas Boiler rate conditions

PDF (0.13MB) Download

Specific conditions for registering for fotofactura

PDF (0.07MB) Download

Conditions digital bill

PDF (0.09MB) Download

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

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