Leslie Appleton's home in Enville Street suffered a fire on the ground floor on January 13.
The 69-year-old, known as Les, and Rolo the dog were not injured during the incident, but have lost many treasured belongings and everyday items.
Four fire crews from across Warrington, along with a hydraulic platform, were called to the blaze at around 6.50pm.
They tackled the flames using two hose reels and a covering jet.
Simon Oldfield has set up a JustGiving page to help Les and Rolo get back on their feet.
More than £3,000 has since been raised.
Pictures of the incident by Matthew Campbell