Key legal question
Whether the replacement of the heating boiler and chimney renovation are deductible maintenance costs for direct federal tax.
Extracted holding
Yes, for a normally maintained newly acquired property, periodic maintenance within five years is deductible; the boiler installation itself is non-deductible value-enhancing expenditure.
Extracted reasoning
The court followed the refined Dumont doctrine under Art. 32(2) DBG: necessary maintenance preserving the existing condition is deductible, but a new boiler is a lasting improvement and not maintenance.