Fýr-hús

According to the Old English Dictionary:

fýr-hús

Substitute: a room with a fire:--Búr camera, fýrhúscaminatum, Wrt. Voc. i. 58, 7. Fýrhúses (printed -hýses) hlýwing caumene refugium, Angl. xiii. 397, 461. [N. E. D. fire-house.] fyr-hus