The 52-year-old is offering a 'substantial' reward to charity for Information leading to a conviction after the vehicle was targeted outside his home.
And CCTV of the incident posted on Facebook has been shared around 100,000 times.
Self-employed Ian, of Ashbourne Road, Whiston, first noticed something was wrong a 7am last Saturday after spotting a cloth on the driveway and the door to his van ajar.
He said: "I opened the door and I saw all of my expensive tools had been taken.
"I was gutted. It didn't feel as if it was real. They knew there was valuable tools in the van.
Ian, who runs IJM Plumbing and Heating, had installed the CCTV at their home just a week before the incident.
He said: "We reviewed the footage on the iPad and we saw that at 1.30am two guys pulled up in a Peugeot 307 and broke into the van.
"They spent about 10 minutes selecting what they wanted and then made off."They took about £3,000 worth of equipment. There was expensive power tools but the main one was a Honda generator."