Glass doors with ring diagram projected onto them. Abstract background on such subjects as heating systems, energy saving / recuperation, etc. Technological aspect of modern architecture. tonymax/iStock/Thinkstock

Low- and No-Cost Ways to Save Energy in Buildings

Identifying ‘low-hanging fruit’ within the reach of most any budget

While new buildings present opportunities for energy-conscious design, existing buildings present ones for low- and no-cost energy-saving retrofit measures. Here are some ideas.

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