dishwasher (Home Systems)

Dishwasher

• What this is: how your built-in dishwasher works, what actually causes floods, how to maintain it, and when to replace vs repair — for a BC strata unit (and detached).
• Not: portable or countertop units; legal or insurance advice. Profile is marked pending until home type is confirmed.
• Figures: 2025–26 Metro Vancouver estimates — get your own quotes.

Bottom line

The rule (tripwire)

• Replace at ~10 years with any major fault; repair if young and it’s one part. Modern dishwashers last 9–13 years.¹² Apply the 50% rule: if repair costs more than half a comparable new unit (~$800–$1,200 installed), replace — an old unit with a control-board or pump failure crosses that easily.³⁴

Recurring upkeep

• Inspect under the cabinet for moisture once a year, and check the supply-line fittings at the same time. The slow drip is found late precisely because nobody looks.

One-time setup

• Swap to a braided stainless supply line (replace plain rubber or unbraided immediately) — a $15–$40 part that prevents a five-figure exposure.
• Confirm your personal policy covers a strata deductible chargeback. A leaky dishwasher is named in many BC strata bylaws as an owner-responsible water-escape source. → Does My Personal Insurance Cover a Strata Bylaw-Imposed Deductible Chargeback (Home Systems)

Standing facts

• The silent slow drip — not a dramatic burst — is the real risk. A drip from the supply line or inlet valve wicks into the cabinet floor and subfloor for weeks before anyone notices; in a strata that becomes a deductible chargeback ($25K–$250K+).

How it works — the one thing that matters

A built-in dishwasher is a closed-loop water-management system. Water enters through a water inlet valve (an electrically controlled solenoid on the left rear base), fills to a level sensed by the float switch (a small plastic cap on the tub floor), gets sprayed by a pump through rotating spray arms, then drains out through the drain pump and hose — either to the under-sink drain or through an air gap on the counter.

So what — the load-bearing insight: every component that touches water is connected, under pressure, to a fitting or hose inside an enclosed wooden cabinet. The dishwasher’s failure modes that matter for a strata owner are not “won’t clean dishes” — they are “water is leaving the machine in the wrong direction.” Two paths dominate:

1. Supply side (inlet valve / supply line): water enters under line pressure (~60 psi) constantly. A failed inlet valve solenoid can drip continuously even when the unit is off. A supply line fitting that weeps once a week pools under the cabinet in two months. This is the slow, hidden, expensive failure.
2. Float switch stuck down: if debris holds the float depressed, the inlet valve never gets the signal to close, and the tub overfills and floods through the door seal. This is the sudden, obvious, still-expensive failure.

Drain-side failures (blocked filter, kinked drain hose) produce standing water inside the tub, not under the cabinet — irritating but not a strata emergency. → Dishwasher Supply-Side Leak Is the Load-Bearing Flood Risk (Home Systems)

What goes wrong, and the warning signs

Watch for	What it means
Water pooling under or in front of the unit during or after a cycle	Door gasket failing, or overfill via stuck float — check now
Cabinet floor or base swollen, soft, or discoloured near dishwasher	Slow leak wicking for weeks — may be supply line or inlet valve
Dampness at the shut-off valve or supply line connection under the sink	Supply fitting weeping — tighten or replace the line
Dishes cloudy/not clean; standing water in tub after cycle	Clogged filter or spray arm — drain-side maintenance issue, not a flood risk
Unit fills slowly or not at all	Inlet valve clogged or solenoid failing — clean screen or replace valve
Dishwasher fills to overflowing	Float switch stuck or failed — clear debris first; replace if stuck
Musty smell or mildew at door bottom	Door gasket sealing poorly — check the paper-test; may need replacement
Dishwasher is 10+ years old with any new fault	Past design life — evaluate replace-vs-repair before spending on repairs

Correct baseline (what normal looks like): after a full cycle, the tub floor is dry (or nearly so), dishes are clean and clear, and there is no water under or around the unit.

Typical cost (BC / Metro Vancouver)

Tier	What’s included	Range	Sources
DIY / parts only	Replacement supply line (braided stainless, 60”); door gasket; filter — owner supplies labour	supply line $15–$40 · gasket $30–$100 · filter part $20–$60	56 — indicative (limited sources)
Basic repair	Appliance tech, like-for-like part swap (inlet valve, float switch, door latch, spray arm); diagnostic fee typically credited toward repair	$150–$350 total inc diagnostic and labour	34 — indicative (limited sources)
Standard repair	Higher-cost parts: pump assembly or control board; diagnostic + parts + labour; on older units, compare to replacement threshold	pump $380–$650 · control board $400–$600 · water valve $300–$450	43 — indicative (limited sources)
Full replacement	New mid-range unit + delivery + removal of old unit + installation (hook up water supply, drain, electrical); Vancouver labour runs ~20% above national average	unit + install: $800–$1,500 all-in depending on unit chosen	72 — indicative (limited sources)

The 50% rule threshold: repairs exceeding ~$400–$600 on a unit past 8 years are generally not worth it — replacement lands in the $800–$1,500 all-in range.¹² Get a written quote before authorizing any repair above $200.

Atlantis Plumbing (the third supply-line source originally cited) is an Atlanta, Georgia company — not Metro Vancouver. The supply-line replacement interval (5–10 yr, braided stainless) is supported by Jaspector.com⁵ and JW Home Care⁶ independently; the third-source gap for this specific figure is noted.

When to replace vs repair

What you see	Do this
Water under cabinet, soft/swollen floor, source is supply line or inlet valve	Replace supply line ($15–$40 DIY) or inlet valve ($100–$200 with labour) — the cabinet may need assessment too; call a pro if subfloor is wet
Float switch stuck — debris holding it down	**Clear debris first ($0DIY)\ast \ast —ifstillstuckaftercleaning,replaceswitch($50–$150 with labour)
Clogged filter or drain hose	Clean ($0 DIY) — owner-doable, see procedure below
Door gasket cracked, flat, or failing paper-test	Replace gasket ($30–$100 DIY) — straightforward if you can get the correct part number
Pump failure, heating element, door latch	Repair if unit < 8 years — pump ~$380–$650 inc labour4; element ~$150–$300; latch ~$75–$150
Control board failure	Repair only if unit < 5–6 years — boards run $400–$600 installed4; on an older machine, replace instead
Unit 10+ years old + any major fault	Replace — past its design life; repair costs likely exceed the 50% rule12
Repair quote > 50% of replacement cost ($800–$1,500 all-in)	Replace — apply this regardless of unit age12

Verdict: supply-line and gasket repairs are cheap enough to do at any age. Major internal part failures (pump, control board) on a unit past 8 years rarely pass the 50% rule. The replacement threshold (~$800–$1,500 all-in Metro Vancouver⁷) is low enough that an old dishwasher with two concurrent faults nearly always replaces. Caveat: 9–13 year lifespan figure is a trade-norm average from Canadian appliance service data; actual life varies by brand, hard-water exposure, and maintenance. Hard water in Metro Vancouver can accelerate internal scaling. Full replacement crosses both decision thresholds (>$500, irreversible) → frame per The Decision Lifecycle if competing with other capital priorities.

How to maintain it — the procedures

Four owner-doable tasks prevent the flood failure modes. Supply line replacement and subfloor assessment go to a plumber; pump and control board repairs go to an appliance technician (see Who to call).

Procedure: Annual under-cabinet inspection

Why: the slow supply-line or inlet-valve drip is undetectable from the outside. One annual look catches it before it becomes a subfloor claim. You’ll need: flashlight, a dry paper towel, ~10 min.

1. Open the cabinet doors under the sink to where the dishwasher supply shut-off valve lives.
2. MUST look at the supply line connection at the valve and at the back of the dishwasher (the inlet fitting). Run a dry paper towel over each fitting. Any moisture = act now.
3. Check the supply line itself: look for bulging, kinking, cracking, rust at fittings, or any stiffness/brittleness. Braided stainless with solid brass fittings is the correct material; replace plain rubber or nylon lines immediately.
4. Open the dishwasher door; look at the tub floor. Any pooled water between cycles means drain-side issue.
5. Close the door and look at the floor in front of the unit. Swelling, discolouration, or soft spots in the flooring or cabinet base = leak has been happening — call a pro. Done when: paper towel at both fittings is dry; line is intact; cabinet floor is dry and solid. Stop & call a pro if: fittings are wet, cabinet floor is soft or stained, or the supply line is more than 5–10 years old and showing wear — replace it (a plumber can do this in 30 minutes).

Procedure: Replace the dishwasher supply line — every 5–10 years

Why: the supply line runs at line pressure (~60 psi) all the time, including when the dishwasher is off. The inner rubber core of a braided line degrades with thermal cycling (hot washes, cool standby). An internal rupture can discharge continuously until you notice. This is a $15–$40 part. You’ll need: 3/8” female compression × 3/4” FHT braided stainless line (match length to your run; 60” is typical); adjustable wrench; towel; bucket.⁵⁶

1. MUST turn off the dishwasher supply shut-off valve (typically under the sink, on the hot-water supply).
2. Run the dishwasher’s short drain cycle to depressurize, or open a hot tap to relieve pressure.
3. Place a towel/bucket under the connection. Disconnect the old line at the shut-off valve first (compression end), then at the inlet valve on the dishwasher (hose end).
4. Inspect the inlet valve fitting for sediment or corrosion while it’s accessible.
5. Thread the new line hand-tight plus a quarter turn with a wrench at each end — do not overtighten (deforms the compression ferrule and causes leaks).
6. Turn the shut-off back on slowly; check both fittings for drips. Run a short cycle and recheck. Done when: both fittings dry after a full cycle; no dampness on the paper-towel test. Stop & call a pro if: the shut-off valve under the sink won’t close fully, or you see corrosion at the dishwasher inlet fitting suggesting the valve body itself has failed (replace the valve).

Procedure: Clean the dishwasher filter — monthly

Why: modern dishwashers have a manual-clean filter (not a self-cleaning grinder). A clogged filter causes poor cleaning, standing water in the tub, and forces the pump to work harder — accelerating pump wear. You’ll need: a soft brush (old toothbrush), dish soap, ~10 min.

1. Remove the lower rack.
2. Locate the filter assembly on the tub floor (usually a cylindrical mesh tube inside a flat coarse screen — twist counterclockwise to unlock).
3. MUST lift both parts out carefully — debris can fall into the drain cavity.
4. Rinse under warm water; use the soft brush to clear any trapped food particles from the mesh.
5. MAY soak in warm soapy water for 5 minutes if heavily soiled.
6. Reinstall — twist clockwise until it clicks. Replace the rack. Done when: filter mesh is clear; no standing water after next cycle. Stop & call a pro if: the filter is damaged (cracked mesh) — a damaged filter lets debris reach the pump; order a replacement filter part.

Procedure: Check the door gasket — every 6 months

Why: a failing door seal drips onto the floor in front of the unit with every cycle — a consistent, slow drip that reaches the cabinet base and subfloor over time. You’ll need: a slip of paper, a damp cloth, ~5 min.

1. Open the door fully and inspect the entire rubber gasket around the door perimeter. Look for cracks, flat spots, torn edges, or stiff/brittle sections.
2. Wipe the gasket with a damp cloth to remove detergent residue and food deposits that prevent it from seating.
3. Paper test: close the door on a slip of paper at several points around the perimeter (sides, top, bottom). If you can pull the paper out easily, the seal is not making a tight contact in that zone.
4. If the gasket fails the paper test or shows visible damage, order the replacement part (use your model number — gaskets are model-specific).
5. MAY replace a failed gasket yourself: most models allow the old gasket to be peeled out of the door groove and the new one pressed in — no tools required. Done when: no cracks visible; paper test holds at all points; no pooling on the floor after a cycle. Stop & call a pro if: you’re not confident about the gasket replacement, or if pooling continues after a new gasket is installed (may indicate a door-hinge alignment issue or warped tub frame).

Maintenance calendar (set it and forget it):

• Monthly: clean the filter; run an empty cycle with a dishwasher cleaner tablet or a cup of white vinegar on the bottom rack.
• Every 6 months: inspect and wipe the door gasket; paper-test the seal.
• Annually: under-cabinet inspection (paper-towel test at both supply fittings, visual on the supply line, check cabinet floor for moisture or swelling).
• Every 5–10 years (or at first sign of wear): replace the supply line proactively. If the line is plain rubber or unbraided polymer, replace it now regardless of age.

Strata reality — the part most people miss

Who’s responsible. In BC strata, in-unit appliances — including the dishwasher — are your responsibility to maintain and repair.⁸ The supply line and inlet valve serving only your unit are yours even where they run behind cabinetry. This default follows SPA Standard Bylaw 2, though registered bylaws can shift specific items to the corporation. Action: read your registered bylaws and strata plan to confirm. The standard starting position is: dishwasher = yours.

Dishwasher is explicitly named in many BC strata bylaws. BC strata water-escape bylaws often explicitly list appliances whose leaks create owner responsibility: “an owner is responsible for any water escape damage from that owner’s strata lot or any other type of damage caused by or arising out of the operation of any appliance, equipment or fixture… which include but are not limited to: (i) dishwasher; (ii) refrigerator; (iii) garburator; (iv) hot water tank; (v) washing machine…” (Bylaw 2(3.2)(b) from the vault’s BC strata water-damage legal framework). This means the dishwasher by name is often a “responsible for” trigger.

If it floods. Under SPA s.158⁹ and “responsible for” bylaw language, the strata can charge its water-damage insurance deductible ($25K–$250K+ in Metro Vancouver¹⁰¹¹¹²) to you — without a finding of negligence. The chargeback turns on responsibility (water started in your unit), not fault. → The Strata Insurance Circularity Problem · Strata Flood First Response Sequence Protects Against Deductible Chargeback (Home Systems)

The slow-leak trap. A slow supply-line drip is the worst strata scenario because it often isn’t discovered until the cabinet floor, the subfloor, or the unit below shows damage. Water that has wicked for weeks into a wood subfloor can require full subfloor replacement — a loss that easily clears the strata’s deductible and triggers the chargeback. The annual under-cabinet inspection is specifically designed to catch this before it becomes a claim.

The procedural defense. SPA s.135⁹ requires the strata to give you written notice and a reasonable opportunity to respond before imposing a chargeback. Document your maintenance (keep a log: “filter cleaned, supply line inspected, fittings dry” with dates). A maintenance record is evidence that supports a challenge if the bylaw uses “negligence” language. → Strata Flood First Response Sequence Protects Against Deductible Chargeback (Home Systems)

Your highest-stakes open question. Does your personal condo/home policy cover a bylaw-imposed deductible chargeback? Some policies exclude “liability assumed by contract.” Confirm in writing with your broker. → Does My Personal Insurance Cover a Strata Bylaw-Imposed Deductible Chargeback (Home Systems) · insurance-warranties (Home Systems)

When you hire someone

Appliance technician (inlet valve, pump, control board, door alignment): Ask:

• Is this repair cost-effective given the unit’s age?
• Can you provide a written diagnosis and quote before starting work?
• What warranty on parts and labour?
• Is this brand’s parts still available (older models sometimes aren’t)?

Verify:

• Written invoice with parts list and labour time, warranty dates noted.

Plumber (supply line, shut-off valve, inlet valve fitting, subfloor assessment): Ask:

• Licensed and insured?
• Will you check the shut-off valve for me while you’re here?
• Is the inlet fitting thread sound, or does the valve body need replacing?
• Is there any evidence of subfloor damage (look from underneath if accessible)?

Verify:

• Dry fittings after 24 hours; shut-off valve operates cleanly; written invoice.

Who to call

Named-resource cards become real when filled in the Tier-B MOCs:

• Appliance repair technician → vendor-roster (Home Systems). Fill:

• Name

• Phone

• Brands serviced

• Warranty on labour

• Licensed plumber → vendor-roster (Home Systems). Seed from your strata claim file: “David, Marvel Plumbing.” Fill:

• Phone

• Strata-permit handling

• Personal insurer / broker → insurance-warranties (Home Systems). Fill:

• Policy #

• Written confirmation on deductible-chargeback coverage (loss-assessment limit vs. current building deductible)

• Strata manager → Strata MOC. Fill:

• After-hours emergency line

• Bylaw # for water-escape responsibility

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Sources

Idea Compass

North: Where this comes from

• Kitchen (Home Systems) — parent system
• The Decision Lifecycle — replace-vs-repair framing
• Dishwasher Supply-Side Leak Is the Load-Bearing Flood Risk (Home Systems) — the one mechanism that matters

East: Tensions / failure

• The Strata Insurance Circularity Problem — the coverage gap
• Strata Flood First Response Sequence Protects Against Deductible Chargeback (Home Systems) — the response to failure
• Does My Personal Insurance Cover a Strata Bylaw-Imposed Deductible Chargeback (Home Systems) — the open coverage question
• Slow Dishwasher Supply-Line Drip Is the Insidious Strata Loss (Home Systems) — the failure mode discrimination note

South: Where this leads

• vendor-roster (Home Systems) — appliance tech + plumber cards
• insurance-warranties (Home Systems) — personal policy + deductible-chargeback confirmation
• emergency-shutoffs (Home Systems) — where the dishwasher supply shut-off is
• maintenance calendar above

West: What’s similar

• water-heater (Home Systems) — same strata deductible-chargeback exposure; same supply-side flood risk pattern
• washing-machine (Home Systems) — same bylaw listing; same slow-leak failure mode
• Strata Toilet Claim — real worked instance of strata water-damage chargeback
• supply-lines (Home Systems) — the general supply-line maintenance note

Footnotes

1. Appliance Verified, Canadian appliance service data — dishwasher lifespan and the 50% repair rule — https://applianceverified.ca/articles/repair-or-replace-appliance-guide-2026 ↩ ↩² ↩³ ↩⁴

2. NorthgateAppliances.ca, Canadian appliance retailer — dishwasher lifespan 8–10 yr and the 50% repair-vs-replace rule — https://northgateappliances.ca/repair-vs-replace/ ↩ ↩² ↩³ ↩⁴ ↩⁵

3. Barton Appliance Repair, Metro Vancouver appliance repair company — dishwasher repair cost range $150–$350 (pump/control board on the higher end); diagnostic fee $100 — https://bartonappliancerepair.com/dishwasher-repair/ ↩ ↩² ↩³

4. EasyFix Repair, Vancouver appliance repair company — 2025 repair cost ranges: pump $380–$650, control panel $400–$600, water valve $300–$450, door seal $280–$450 — https://easyfixrepair.ca/blog/appliance-repair-vancouver-guide-2025/ ↩ ↩² ↩³ ↩⁴ ↩⁵

5. Jaspector.com, home-inspection reference wiki — dishwasher supply line: sizing, materials (braided stainless vs polymer vs copper), replacement interval every 5–10 yr; supply lines are a leading cause of under-sink water damage — https://www.jaspector.com/wiki/dishwasher-supply-line/ ↩ ↩² ↩³

6. JW Home Care, home care guidance site — how often to replace supply lines: braided stainless every 10 yr, PVC/nylon every 5–8 yr; warning signs of imminent failure — https://jwhomecare.com/how-often-should-you-replace-your-supply-lines/ ↩ ↩² ↩³

7. CostCanada, Canadian cost-benchmarking site — 2026 Metro Vancouver dishwasher installation: budget $180,average$360, premium $600 (labour only; unit price additional); Vancouver runs ~20% above national average — https://www.costcanada.com/cost/dishwasher-installation-in-vancouver/ ↩ ↩²

8. Province of BC, BC government — division of repair duties in a strata, Standard Bylaw 2 (owner responsible for in-unit maintenance and repair) — https://www2.gov.bc.ca/gov/content/housing-tenancy/strata-housing/operating-a-strata/repairs-and-maintenance/division-of-repair-duties ↩

9. Province of BC, BC government — SPA s.158: strata corporation may recover insurance deductible from an owner responsible for the loss; s.135: written notice and opportunity to respond required before chargeback — https://www.bclaws.gov.bc.ca/civix/document/id/complete/statreg/98043_09 ↩ ↩²

10. C&C Property Group BC, BC strata management company — strata water-damage deductible guide, SPA s.158 chargeback mechanism; historical range $25K–$100K, current typical range $25K–$250K — https://cccm.bc.ca/blog/bc-strata-property-act-water-damage-guide/ ↩

11. Sterling Realty Group, BC real estate commentary — strata water deductibles 2026: historical $25K–$50K, current Metro Vancouver typical $100K–$250K, extreme cases $500K+; SPA s.158 cited — https://sterlingrealtygroup.com/en/insights/strata-insurance-deductible-who-pays ↩

12. Eli Report, strata information platform — strata insurance deductibles: over 60% of BC stratas now carry deductibles above $50K;ranges$10K–$250K+ depending on building risk profile — https://elireport.com/resource-center/strata-insurance-deductibles/ ↩