Clogged Defrost Drain
Melt water has nowhere to go, so it pools inside or underneath instead of draining away.
Water under, behind, or inside a refrigerator is a property problem, not just an appliance problem — especially on hardwood, stone, and cabinet bases. Potomac Refrigerator Pros takes leak calls by phone only, Monday to Sunday, 8:00 AM to 10:00 PM. Call (301) 368-8305 with where the water appears, when it appears, and whether the ice maker or dispenser is involved. A written estimate comes before work starts — no form, no email booking.
Serving Potomac, North Potomac and Montgomery County, MD, centered in Potomac Village, MD 20854
Monday to Sunday, 8:00 AM to 10:00 PM
Name the exact symptom when you call, because a leak is not one fault: a puddle under the fridge every morning; water inside, under the crisper drawers; a drip behind the fridge; a puddle that appears only after a defrost cycle; a leak from the dispenser or ice maker area; or condensation on the cabinet in humid weather. When the water appears narrows the source fast: a defrost-cycle leak points to the drain, a constant drip points to a line or valve, and inside water points to a blocked drain or a seal fault. Potomac homes add two pressures: humid summers that condense on weak seals, and older homes (median home age about 41 years, 2020–2024 ACS) with older lines and fittings behind built-in units.
No single symptom maps to one part. Diagnosis is inspection, with a multimeter and temperature readings, not a phone guess.
Melt water has nowhere to go, so it pools inside or underneath instead of draining away.
A pan that cracks or overflows spills water onto the floor.
A cracked line or a loose compression fitting drips behind the unit.
A valve that sticks or leaks feeds water where it should not go.
A cracked housing or a filter not seated correctly leaks at the filter.
A worn gasket lets humid air in, so condensation forms and runs down the cabinet.
If water is leaking, shut the water supply to the fridge, mop and dry, and photograph the water before you clean it up. Unplug the unit if you can do so safely — but if water has reached electrics or outlets, do not touch the unit; switch off at the breaker if safe and call a professional. Check whether the filter is seated correctly and whether the door seal has debris or damage. Dry the area and ventilate it: damp, dark space under or behind a fridge can support mould growth within 24–48 hours of water exposure, in general mould guidance, so drying matters even after the leak stops. Never remove covers or work on water under pressure yourself.
Call: Call (301) 368-8305 with brand and model if known, where and when water appears, whether the ice maker or dispenser is involved, and your area or ZIP code.
Diagnose on Site: The unit is pulled out and the defrost drain, water line, fittings, door gaskets, filter housing, and ice maker assembly are inspected, tracing the leak to its source.
Written Estimate Before Work: Plain-language diagnosis and estimate first, and you decide. Floor or cabinet damage found with the leak is reported honestly, so the repair decision includes it.
Repair and Test: The drain is cleared or the failed part replaced, and the fridge is run through a full cycle to confirm it stays dry before the visit ends.
After: How to spot a returning leak early, and how to check the filter seating and the seal. No fixed-for-life promise, and no warranty term — warranty terms are unconfirmed and must come from the partner.
No Potomac-specific repair price dataset exists, and none is invented here. Market figures, not a quote, and not a Potomac price. Your written estimate is the only price that counts.
$138–$350 typical, most around $220.
Source: Thumbtack refrigerator repair cost, 2026.
$200–$1,300, average $650, most $300–$1,000 — higher, likely including larger and sealed-system jobs.
Source: HomeAdvisor refrigerator repair cost, 2025.
By part, HomeAdvisor: drip pan $50–$440, door seal $50–$440, ice maker $60–$330.
If repair costs more than about half a comparable new unit, replacement is usually favoured; if far less, repair usually wins. Lifespans (Fridge.com analysis of DOE/AHAM data) are about 14 years for a top-freezer, 13 for a bottom-freezer, and 12 for side-by-side and French-door units, with built-ins about 15 years — guides, not promises.
Repair almost always.
Apply the 50% test: a drain clearing, valve, seal, or pan repair is an easy yes, while a major failure on an old unit near half the replacement price is not.
Apply the 50% test; minor fixes such as a seal, filter, valve, or thermostat can be worth it at any age.
With a major failure, replacement is usually favoured; sealed-system repair on a standard unit over 10 years old rarely pays.
The exception: a repair buying two or three more years on a perfectly fitting unit can beat a swap needing joinery, and replacement add-ons can add several hundred dollars.
Call (301) 368-8305, Monday to Sunday, 8:00 AM to 10:00 PM. Serving Potomac, North Potomac and Montgomery County, MD, centered in Potomac Village, MD 20854. Outside this area, say your ZIP code on the call so range can be checked honestly.
Work is performed by a Maryland licensed holder.
Not sure you are in range? Call with your ZIP code — we are always happy to check.
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
Montgomery County, MD
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Montgomery County, MD
Straight answers for a refrigerator leaking in Potomac, MD — diagnosis first, written estimate before work.
Leak water usually comes from a clogged defrost drain, a cracked or overflowing drain pan, a damaged water line or loose fitting, a failed inlet valve, a cracked filter housing, or condensation from a worn door seal. Where and when the water appears narrows the source fast.
Detail: A defrost-cycle puddle points to the drain; a constant drip points to a line or valve; inside water points to a blocked drain or seal. A technician traces the source before replacing anything. Source: market research, leak symptom-to-cause table.
First shut the water supply to the fridge if water is leaking, mop and dry, and photograph the water before cleaning it up. Unplug the unit if you can do so safely — but if water has reached electrics or outlets, do not touch it; switch off at the breaker if safe and call a professional.
Detail: Dry and ventilate the area even after the leak stops, because damp space under a fridge can support mould growth within 24–48 hours, in general mould guidance. Do not work on water under pressure yourself. Source: market research, leak safety section.
A leak that appears only after a defrost cycle usually means the defrost drain is clogged: melt water from the defrost heater has nowhere to drain, so it pools inside the cabinet or runs onto the floor instead. The timing is the clue, because a line or valve leak would drip constantly.
Detail: Check for water under the crisper drawers, which is the classic sign of a blocked drain. A technician clears the drain tube and checks the drain heater where fitted. Source: market research, leak causes.
Water under the crisper drawers usually means the defrost drain is blocked, so melt water backs up into the cabinet instead of draining away. A leaking filter housing or a worn door seal letting in humid air can also leave water inside, but a blocked drain is the commonest cause.
Detail: Check whether the filter is seated correctly and whether the seal has debris, and note whether the water returns after a defrost cycle. A technician clears the drain and tests the seal. Source: market research, leak causes.
Yes, a leaking refrigerator can damage hardwood, laminate, cabinets, and subfloor, and it is a slip hazard while it lasts. Prolonged leaks warp and swell flooring and cabinet bases, and damp space under a fridge can support mould growth within 24–48 hours, in general mould guidance.
Detail: That is why a leak is treated as prompt, not routine: shut the water, mop and dry, photograph the damage, and call. Drying and ventilation matter even after the repair. Source: market research, leak and mould section.
In humid weather, warm moist air entering through a worn or dirty door seal condenses on cold cabinet surfaces and runs down as water, which looks like a leak. Potomac humid summers make this worse, because a weak seal that copes in winter fails in summer humidity.
Detail: Check the seal for tears, flattening, or debris, and whether the door closes fully. If the seal is sound and water still appears, the source is more likely a drain, line, valve, or filter housing. Source: market research, humidity and seal sections.
A leak is usually worth repairing, because the common causes — a blocked drain, a failed valve, a worn seal, or a cracked pan — are small jobs against the price of a new unit and against the floor damage a continuing leak causes. The 50% rule only bites when a major failure lands on a very old unit.
Detail: Get the written estimate first, and weigh it against a comparable new unit including delivery and installation — and against the cost of leaving a leak to damage flooring. Source: market research, repair-versus-replace framework.
Refrigerator leaking? Call (301) 368-8305 and tell us the brand, model, and symptoms. You get a written estimate before any work starts. No form, no email booking — phone only.
Call (301) 368-8305Service Area Map, centered on Potomac Village, MD 20854, as a geographic center only.