Both are theoretically correct. Although it is usual to have the verb there as the final part of the sentence, it is reasonably common to have certain words after the 'verbal bracket'. This is called Ausklammerung.
Prepositional objects (e.g. mit der Gasheizung) are quite often put at the end of the 'verbal bracket'.
I think with prepositional objects of adjectives it is more common to have them in the verbal bracket, but it is by no means uncommon. It is more common in less formal contexts, but will still appear to some degree in more formal writing.
I am not a native so I do not feel confident enough to state exactly how common it is or exactly how informal, but I can tell you it is grammatically correct for the reasons stated above. Ausklammerung is more common with longer phrases to avoid 'overstretching' the verbal bracket.