Dear Ken: What is your opinion of professional air duct cleaning? A local company is guaranteeing that the cleaning will reduce duct leakage to less than 5% and back their word with a 10-year ...

Question: The bedrooms on the north side of our house are always chilly. We are planning a new house now. What causes this and what should we do to avoid the same problem in our new house? It will be ...

This is the time of year when some people start to think about a new furnace. A run of single-digit temperatures and a couple of ice storms are good motivators. Some of us are warm enough but are ...

Completed in 2017, The House at Cornell Tech is the world’s largest building to meet Passive House criteria, the strictest international standards for building performance and energy efficiency. At ...