When the water heater quits, start here.
Look up a blinking code, find out why something is leaking, or check what a repair should cost before you call anyone.
Water heaters
Leaks, no hot water, strange noises, and what a repair or replacement should cost.
- Water heater problems: a homeowner's guide
- Water heater leaking from the bottom: causes and what to do
- Water heater drain pan: is it required
- Hot water not working but cold water is: causes
- Water heater connections explained: flex lines, nipples and unions
- Water heater leaking from the relief valve pipe
Tankless
Sizing, installation cost, descaling and fixing tankless water heaters.
- Tankless water heater installation cost
- Tankless water heater isolation valves explained
- Propane tankless water heaters: what to know before you buy
- How to descale a tankless water heater
Plumbing costs
What common plumbing jobs cost in the U.S., what drives the price, and how to compare quotes.
- Plumbing costs: what drives the price of a repair
- Leak detection system cost
- Faucet installation cost
- Tankless water heater flame sensor replacement
- Water heater igniter replacement cost (2026)
- Water heater dip tube replacement cost (2026)
Leaks and pipes
Finding hidden leaks, burst and frozen pipes, repiping and slab leaks.
Browse leaks and pipesDrains and toilets
Running toilets, slow drains, garbage disposals and sump pumps.
- Toilet keeps running: how to fix it
- Toilet phantom flush explained
- Bathtub drain clogged: how to clear it
- Submersible vs pedestal sump pumps
Maintenance
Seasonal checklists and simple upkeep that prevent frozen pipes, floods and early water heater failures.
- Home plumbing maintenance checklist: what to do each season
- Sump pump maintenance: a yearly checklist
- Water softener maintenance: salt, cleaning and resin care
- Septic tank maintenance: pumping, inspections and daily habits
- How to check and replace a water heater anode rod
- Noritz tankless water heater maintenance: a yearly checklist
Sewer and drain
Main line clogs, sewer backups, root intrusion, camera inspections, hydro jetting and sewer line repair options.
Browse sewer and drainEmergency plumbing
What to do in the first minutes of a plumbing emergency: burst pipes, no water, sewer backups and leaks that will not stop.
- Plumbing emergencies: what to do first
- Curb stop valve: how to shut off water at the street
- Shower valve won't shut off: what to do
- Pipe leaking at the joint: temporary fixes that work
- Water coming up through the floor drain
- Leak under the kitchen sink: emergency fixes
Calculators
Quick calculators for sizing and estimating plumbing jobs.
- Water heater size calculator
- Water heater replacement cost calculator
- Repair or replace your water heater? Calculator
- Tankless water heater size calculator
Error codes by brand
What the display or blinking light is telling you, and what to check first.
Recently updated
- Sump pump maintenance: a yearly checklist
- Water heater drain pan: is it required
- Hot water not working but cold water is: causes
- Water heater connections explained: flex lines, nipples and unions
- Leak detection system cost
- Water heater leaking from the relief valve pipe
- Faucet installation cost
- Tankless water heater flame sensor replacement