Reflex sight glasses are great for most boilers—but they’re not always the best choice. Today on Weekly Boiler Tips discover why and when to avoid them, plus tips for high-pressure and chemical-heavy applications! Safety notice: Always consult experts for complex repairs. Weekly Boiler Tips are compiled by the knowledgeable and remarkably prolific content creators at WARE, a family owned, third-generation, 69-year-old commercial and industrial boiler rental and service firm based in Louisville KY. You can learn all about this and more at WARE’s Boiler University.