Answer
Nov 03, 2025 - 01:07 PM
The best dimensions for a water heater drain or drip pan are 2–4 inches wider than the water heater base, with sidewalls at least 1.5–2 inches high. This sizing ensures proper fit, allows space for drainage, and prevents overflow in case of minor leaks or condensation. Options like the 36" diameter All Purpose Round Drip Pan are ideal for large systems, while more compact pans such as the 20" x 13" Wall Mounted Tankless Water Heater Drain Pan fit tankless heaters. The variety in dimensions ensures a proper fit for different water heater types and installation spaces.
