What’s a Thermal Expansion Tank and Why Should You Care? 🔧💧A thermal expansion tank is a small, but essential component of your water heater system. It absorbs the extra pressure that builds up when water heats and expands, preventing strain on your plumbing system.Why Check It Annually?💥 Prevents Pressure Build-Up: Without a working expansion tank, the excess pressure could damage your pipes, fixtures, and water heater.🛠 Extends Water Heater Life: Reducing pressure increases the lifespan