We’re remodelling our bathroom. What can we do to make it more energy-efficient?
• Install a low-flow shower head, toilet and faucet, which will save a significant amount of energy and water. • Insulate all exterior walls and floors above unconditioned spaces to at least R-11 (recommended for northeastern US states). The added cost is minimal, and will pay for itself in about 2 ½ years. • Have a professional seal your home’s air leaks, and in particular seal around plumbing and electrical penetrations – especially recessed lighting – in the bathroom. Although it will cost around $500, you can save about $175 each year. The improvement will pay for itself in about 3 years, and after that the savings are yours to keep. • Add adequate ventilation in the bathroom, ensuring that the exhaust fan vents to the outdoors. • This is a good opportunity to open outside walls behind tubs and showers which are often poorly insulated and air sealed, and install insulation and seal air leaks with caulk or expanding foam.
