How to calculate the fuel consumption correctly

It is not always easy to calculate fuel consumption exactly as a landlord. Where this is important, how to proceed remainders arithmetic, and what you have to pay attention to when calculating the fuel consumption, you can therefore read in detail in this article.

Definition of heating costs

According to § 9 of the Heating Cost Ordinance (HeizkV), the hot water costs must first be deducted from the calculated, uniformly incurred operating costs in order to calculate the heating costs.

This of course only applies where the hot water is prepared with the heating system. If domestic water heaters or boilers installed in the apartments are used to produce hot water, the calculation clearly does not apply.

Then the calculated operating costs are also the heating costs at the same time, as each tenant bears the costs for his own water heating via the electricity costs.

Different heating means and remainders

In the case of so-called non-wired energy sources, there may be an initial and a residual quantity of heating medium at the beginning and at the end of a billing period.

Uncircuited energy sources are:

  • Fuel oil
  • LPG
  • Pellets (on order)

The initial and residual levels of heating equipment are a common cause of billing errors. Almost one-fifth of all calculations that have been identified as wrong are caused by incorrect handling of initial or residual inventories.

Incorrect procedure

Overall, the same three errors are repeatedly found in the calculation:

  • the initial and / or remaining stock is assumed to be zero
  • the initial and / or remaining stock is not included in the calculation at all
  • the starting and remaining stock over several billing periods always with the same values ​​counted (which logically yes can not be)

Responsibility for errors

The responsibility for such calculation errors are always the homeowner (landlord) to blame. An exception is, for example, when the property management agency hires a settlement company. For accounting errors then the billing companies are responsible.

Problem Intermediate deliveries

The costs of energy sources, such as LPG or fuel oil, change with each delivery. With intermediate delivery, this results in a problem.

In practice, the following values ​​must be taken into account:

  • an opening balance from the previous settlement period at the then valid price
  • an initial delivery with its own price
  • possibly another delivery at a different price
  • a remaining balance whose price can not be precisely determined

The law solves the problem by a simple rule:
The fuel oil is consumed in the order of purchase. Thus, the remaining stock automatically always has the price of the last delivery before, if it is lower than this. If the remaining stock is higher than the quantity of the last delivery, then the price of the last but one delivery must also be estimated for the additional quantity.

Fuel consumption of the tenant

The service charge settlement must be made according to a specific distribution key. The consumption of the individual tenants also has to be considered at least 50 percent.

In any case, readers must be present at the tenant, which the landlord or a reading company must read. As a landlord you can also recalculate kWh in heating medium:

  • Heating oil has 10 kWh per liter
  • City gas has 4.5 kWh per m³
  • for natural gas L is 9 kWh per m³
  • for natural gas H is 10.5 kWh per m³
  • Bei Coke (rarely) can be assumed to be 8 kWh per kg
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