Roy Wohlfarth

Plumbing & Mechanical recently added two columnists to its lineup of industry experts.Roy Wohlfarth, president of Pittsburgh-based Fire & Ice, is the author of “Lessons Learned in a Boiler Room: A commonsense approach to servicing and installing commercial boilers.” His column - The Boiler Room - will focus on commercial boilers. This month, he discusses the best time to perform a boiler combustion analysis.

Jim Hamilton

Jim Hamiltonis taking overJack Tester’s column, The Bottom Line. A business coach at Nexstar, Hamilton has bought many underperforming businesses and turned them into profitable enterprises - in less than a year. This month, he gives readers10 steps to create an effective budget.