The age and condition of your home systems doesn’t affect Gem’s ability to work on your home – or your ability to become a Home Advocate member. All home plumbing, heating, cooling, and electrical systems are eligible for coverage, including your water heater and outside sewer and water pipes. Maintenance coverage on oil-based heating systems is subject to an additional $10/month charge. At this time, Gem does not service appliances, but we would be happy to connect you with a company we trust and that holds the same values as Gem does.