Should You Replace an Old Boiler as Part of an Energy-Efficiency Upgrade?

Many people assume that improving the energy performance of home’s mechanical system starts with replacing the old water boiler. That’s not always the case. As John Jennings, technical director at Steven Winter Associates explains, well-made boilers that are 50 years old (like the one in this video) can still be working at up to 80% efficiency, provided they’ve been professionally cleaned and tuned every year. John also explains how to add a tankless water heater.

For more of John's money- and energy-saving advice, check out our Ask the Energy Expert Video Series.