The 40-year-old man was left with deep lacerations to his head and hands after he attempted to fight off his attackers during the assault at a home in Manchester at 10pm on 23 March.
Three men knocked on the victim's front door in Thyme Close, Chorlton-cum-Hardy, and as soon as he opened it forced their way inside, assaulting him with the machete and punching him repeatedly in the face, the Mirror reported.
The injured man and another person in the house managed to push the offenders back out the door and they fled in a silver-coloured saloon car.
Police were called and the victim was treated at the hospital but his injuries were not life-threatening.
The offenders were described as two white men and one of mixed race, all slim build and ranging from 5ft 5in to 6ft in height.
Detective Constable Chris Clarke, from Greater Manchester Police, said: "The victim has no idea why he was attacked on his own doorstep in such a violent and savage way, so at this stage we have not established any motive for this heinous attack.
"What we do know is that the victim suffered deep cuts to his head as a result of being assaulted with a machete and in some ways is fortunate his injuries are not more severe given he was attacked with such a dangerous weapon."
Anyone with information should call police on 0161 856 6046 or the independent charity Crimestoppers, anonymously, on 0800 555 111.