At our firm, we currently recommend direct-pressure oil boilers for domestic hot water. Recent models have significantly improved in thermal efficiency. For a household of four, the annual oil consumption for hot water is approximately 300 liters, which is only about one-quarter to one-third of the amount typically used for heating.

The direct-pressure system heats water on demand, providing fresh hot water quickly and efficiently, without long waiting times. While oil prices may fluctuate, kerosene remains a reliable and stable energy source—especially in cold climates—making it a practical choice.

To further reduce environmental impact and save energy, we also propose combining oil boilers with solar thermal water heaters. During sunnier months, it’s often possible to meet most or even all hot water needs using only solar heat, significantly cutting oil consumption.