He told CNN he was inspired to start DEPHER after he saw an elderly man being "manipulated" by another engineer.
"It got me thinking about other elderly and vulnerable people — we need to do something more to help the people who need it most," he said.
"A lot of elderly and disabled people don't like asking for assistance and if they can't afford something like fixing the boiler, they might not do it and get into trouble. We are there to take that worry away."
The company relies on donations and support from the community to keep going, with Mr Anderson having racked up about $157,851 in debt for his acts of kindness.
He is working to pay off the debt in monthly instalments and said as long as he had enough money to fill up his car he would "be there to try and help the people who need it'.
Even when funds are extremely low Mr Anderson still offers a 25 per cent discount for his services.
Hundreds of people have taken to social media to praise Mr Anderson for his selflessness.
"There are some wonderful people in this world. James is one of them," one Twitter user said.
"#James Anderson you sir are a legend, in a country filled with hate & greed your humanity shines like a beacon, massive good luck with your business you thoroughly deserve it, you haven't touch my boiler but you've given me a warm glow," another wrote.