Example
Rheem Performance Plus 50-gallon gas water heater
- Manufacturer
- Rheem
- Model
- XG50T12DU38U0
- Serial
- 0318A12345
Made March 2018, from the serial. Eight years in; these typically last 8–12 years, so it's in the window.
New8y12y
Do this first
Check the anode rod$20-50DIY
The rod corrodes so the tank doesn't. At eight years it's probably gone, and after that the tank rusts from the inside.
Then
Flush the tank$0DIY
Sediment on the bottom makes it rumble, run hot, and die early.
Test the T&P relief valve$0DIY
The one safety device on it. Lift the lever; water should come out and stop.
If it fails
Usual first sign it's going: rust on tank or in water. Replacement runs $1,200-$2,500 installed for standard tank.
Example
Carrier Infinity 96 gas furnace
- Manufacturer
- Carrier
- Model
- 59TN6C100C211122
- Serial
- 1724A47932
Made April 2024, from the serial. Two years in; these typically last 15–30 years.
New15y30y
Do this first
Replace the air filter$10-40DIY
A clogged filter makes the blower work harder and can crack the heat exchanger over time. Every 1-3 months.
Then
Annual furnace tune-up$80-200Pro
A tech checks the heat exchanger for cracks, which is a carbon monoxide risk you cannot see.
Test the CO detector nearby$0DIY
The furnace is the thing it exists for.
If it fails
Usual first sign it's going: short cycling or a yellow, flickering flame. Replacement runs $3,000-$7,500 installed (varies by efficiency and size).
Example
Pretty sure this is a Bosch 800 Series dishwasher
- Manufacturer
- Bosch
- Model
- SHPM88Z75N
No serial in the shot, so no age — the date is usually on the plate. These typically last 9–12 years.
Do this first
Clean the filter$0DIY
Grit on the glasses and a smell that will not leave both start here. Twist it out of the floor of the tub.
Then
Check the door gasket$0DIY
A leak here ends up under the floor, and that is the expensive part.
If it fails
Usual first sign it's going: standing water after a cycle, or a pump that hums and does nothing. Replacement runs $500-$1,500.