Kenmore 625343800 undersink water filter housing Parts

For a Kenmore 625343800 undersink water filter housing, a plumber typically charges about $100 to $300 to change a standard filter cartridge when shutoff access is easy; costs rise when valves are stuck, plumbing must be modified, or a new faucet or fittings are needed (see the 625343800 owner's manual).

What drives the price

A filter change is usually quick, but the total bill depends on the job conditions.

• Type of visit: scheduled service vs. emergency/after-hours
• Access: cramped cabinet, corroded fittings, hard-to-reach shutoff valve
• Condition of parts: stuck sump, worn O-ring, leaking head
• Extra work: adding a pressure-reducing valve, replacing tubing/fittings
• Cartridge type: sediment vs. taste/odor vs. lead/chemical reduction

Typical cost breakdown (what you are paying for)

Item	Typical range	Notes
Labor for cartridge swap	$75 to $200	Often 30 to 60 minutes on an accessible under-sink setup
Service call/trip fee	$50 to $150	Common even if the job is fast
Filter cartridge(s)	$15 to $40+	Depends on micron rating and cartridge type
Minor materials	$0 to $25	Teflon tape, fittings, short tubing sections

Model-specific details that affect service

The 625343800 housing is designed for under-sink cold water filtering and has key limits that a plumber may check during service.

• Max supply pressure: up to 125 psi (a pressure-reducing valve is recommended if house pressure is over 100 psi)
• Supply water temperature: 40 to 100°F
• Thread size: 3/8" NPT inlet/outlet

Why it matters

Changing the cartridge on time protects flow and filtration performance. The manual notes sediment cartridges often average about 6 months of life when filtering to one faucet, and a common replacement signal is reduced water pressure at the faucet.

Parts customers commonly replace

If you want to match what is already installed, these are common cartridge options listed for this model.

• Sed cart 5 m 3848007 (fine sediment filtration)
• Sed cart 25m 3847807 (coarser sediment filtration)

Last updated: January 2026

For Kenmore model 625343800, the model number is printed on the unit’s identification label. On undersink water treatment housings, that label is usually on the head/bracket area or on the housing body where it’s easy to see during filter changes; confirm the exact label location in the owner's manual.

Where to look on the unit

Check these common spots first:

• On the filter head (the top cap where the water lines connect)
• On the mounting bracket or back plate under the sink
• On the outside of the housing canister (near the top rim)
• On a sticker near the inlet and outlet ports
• On the packaging or paperwork if the label is worn

What you should write down

Record the full model number and any additional identifiers so you get the right parts.

Item to record	Example	Why it matters
Model number	625343800	Matches the correct diagrams and parts list
Part number (if replacing a cartridge)	42-34362	Helps confirm the exact filter media and fit
Part ID (Sears PartsDirect listing)	3848007	Speeds up ordering and avoids mix-ups

Why it matters

Kenmore water treatment parts can look similar across models, but cartridge micron rating and head style can differ. Using the exact model number helps ensure you choose the correct sediment cartridge and compatible head components.

Last updated: March 2026

The Kenmore 625343800 undersink water filter housing typically lasts 10 to 15 years. Lifespan depends most on water pressure, water quality (sediment load), and how consistently the housing is serviced; follow the maintenance guidance in the owner's manual to maximize life.

What wears out first (and what to replace)

The housing body often lasts the longest; service items usually need attention sooner:

• Sediment cartridge (clogs over time and reduces flow)
• O-rings and seals (can flatten and start leaking)
• Filter head connections (can seep if fittings loosen or crack)
• Mounting bracket hardware (can loosen under sink vibration)

Typical replacement timing

Use this as a practical planning guide.

Component	Typical interval	Common sign it’s due
Sediment cartridge	3 to 6 months	Lower flow, cloudy water, pressure drop
O-ring/seal	1 to 3 years	Drips at the canister seam after tightening
Complete housing/head	10 to 15 years	Cracks, persistent leaks, stripped threads

Parts that fit this model

If you are maintaining performance, these model-matched parts are common starting points:

• Sed cart 5 m 3848007 (part number 42-34362)
• Sed cart 25m 3847807 (part number 42-34360)
• Head (gray) 7179185 (part number 7156535)

Why it matters

A clogged cartridge can make the system seem “worn out” even when the housing is fine. Replacing the correct sediment cartridge on schedule protects the head, seals, and plumbing connections.

Last updated: March 2026