Writing in ACHR News, Joanna Turpin reports on the unique maintenance needs of condensing furnaces. “Condensing furnaces offer higher efficiencies and better comfort, but they also require more care than standard 80 percent AFUE furnaces,” she writes. Regular maintenance keeps these units from breaking down, and it also keeps them running at their highest efficiency. The article offers a checklist of maintenance guidelines, including replacing air filters, checking flue and combustion air piping for blockages and breaks, and checking the gas pressure. A well-maintained condensing furnace can pay off in improved homeowner comfort and energy.