The function of the dome is to attract and emit far and wide the waves of Chaitanya into the atmosphere. The level of bhakti (Devotion) and bhav (Spiritual emotion) in an average individual is not high. Hence, so that whatever little Chaitanya that is generated because of the worship of the Deity does not spread far and wide through the dome on the temple and the worshipper avail its benefit, it is appropriate for temple at home not to have a dome. The level of bhakti and bhav in individuals
with spiritual level above 50% is high and hence, the amount of Chaitanya generated as a result of their worship of the Deity is
also high. If such individuals have a dome for their devghar (temple at home), through the medium of this dome the Chaitanya spreads far and wide and that not only helps others, but also purifies the environment to a large extent. In this case, along with individual benefits, the broader benefit of the society is sought.