Free tools, no sign-up
Get a straight answer about your water heater or furnace.
Free tools for water heater and furnace problems: decode your serial number for its age, check error codes, and find out if a repair is worth it.
Tools
- Calculate
Repair or Replace Calculator
Answer a few questions about your water heater and get a straight answer: repair it or replace it, with the cost of both.
- Decode
Serial Number Decoder
Type in your serial number and find out how old your unit is.
- Look up
Error Code Lookup
Look up what the code on your water heater display means.
Fix it now
Something already wrong with your water heater? Find your symptom and get a ranked, DIY-or-pro answer.