Dryer vent installation and cleaning cost in Luxembourg (2026)

The most important cost decision is not "how much does the vent cost?" but "do I need one at all?" In Luxembourg, three dryer technologies dominate:

1. Vented dryer (sèche-linge à évacuation):

• Exhausts hot, moist air through a duct to the outside
• Requires a vent — this is the subject of this guide
• Cheapest purchase (€250–€500) but inefficient on energy
• Energy class typically C or D
• Running cost: €150–€250/year for average household
• Drying time: 80–120 minutes per load
• Pros: cheapest upfront
• Cons: energy hog, requires vent install, moisture can damage vent if poorly done

2. Condenser dryer (sèche-linge à condensation):

• Condenses moisture into a water tank you empty after each cycle
• No vent required — plug in and use
• Mid-range purchase (€400–€800)
• Energy class typically B
• Running cost: €100–€180/year
• Drying time: 100–150 minutes
• Pros: no install, works anywhere, no moisture outside the room
• Cons: tank to empty, more expensive to buy, slightly more heat in the room

3. Heat-pump dryer (sèche-linge à pompe à chaleur):

• Uses a small heat pump to condense moisture; most efficient type
• No vent required
• Premium purchase (€700–€1 400)
• Energy class A++ or A+++
• Running cost: €40–€90/year
• Drying time: 150–180 minutes (slower, gentler on clothes)
• Pros: most efficient, no install, fabric-friendly
• Cons: most expensive upfront, longer cycle time

Luxembourg market reality:

• 60 % of new dryer sales in LU are heat-pump models as of 2025
• 25 % are condenser-only
• Only about 15 % are vented — and those are typically for single-family houses with easy vent routes
• Most LU apartments (Luxembourg-Ville, Esch, Differdange, Dudelange) installed after 2005 have no provision for a vent

When to install a vent (rather than switch dryer):

• Single-family house with existing vented dryer that works
• Ground-floor utility room with easy wall access to outside
• Commercial laundry requirements
• Period property with external garden facing wall and no humidity concerns

When to switch to condenser or heat-pump instead of installing a vent:

• Apartment building with no provision for vent
• Wall is exterior-insulated with no easy bypass
• Vent run would exceed 8 metres horizontal or include more than 2 bends (efficiency and lint risk rise sharply)
• Rental property where landlord declines permission
• Co-property (copropriété) rules forbid new exterior penetrations

Economic comparison — vent vs condenser over 10 years:

• Vented dryer + €380 vent install + €200/year energy = €2 580 over 10 years
• Condenser dryer (€600) + €120/year energy = €1 800 over 10 years
• Heat-pump dryer (€1 100) + €60/year energy = €1 700 over 10 years

The vent pays only if the house already has a duct in place, or if a very short, simple run is possible (< 3 m, straight out).

Typical complete installs TTC:

• Simple 2 m straight run through plastered interior wall to outside: €220–€350
• Standard 4 m run with 1 elbow through exterior brick wall: €320–€480
• 6 m run with 2 elbows through insulated cavity wall: €480–€680
• Specialist install through stone facade (heritage): €650–€950

Duct material — why it matters:

• Flexible PVC is cheapest but sags, kinks, and collects lint; LU HVAC specialists strongly recommend avoiding it on new installs
• Rigid aluminium is the industry standard — smooth interior, minimal lint build-up, 30+ year life
• Semi-rigid aluminium (flexible but smooth) for tight turns or final connection to dryer — 1–1,5 m max
• Insulated duct required if the run passes through cold spaces (roof voids, unheated cellars) to prevent condensation dripping inside the duct

Length and bend rules (for reliable performance):

• Maximum total equivalent length: 8 metres straight, OR 6 metres with 1 elbow, OR 4 metres with 2 elbows
• Each 90° elbow counts as 1,8 metres of straight run
• Each 45° elbow counts as 0,9 metres
• Beyond these limits, the dryer's fan can't push moist air reliably — lint accumulates faster, efficiency drops, fire risk rises

Exterior termination:

• Louvre with backdraft damper — opens under positive pressure from dryer, closes otherwise
• Damper prevents cold air, wind, rain, and small animals entering
• Mount at least 1 m above ground and 60 cm from any window or vent
• Orientation: north or east to minimise wind-driven rain
• Bird screen is necessary in LU — mesh prevents nesting (do not use a wire-mesh that will clog with lint; use a hinged louvre)

LU regulatory and building-code context:

• LU Code du travail applies if the dryer is for commercial use — stricter venting standards
• For residential installs in apartments: check the règlement de copropriété before penetrating an exterior wall; many buildings require written co-owner approval
• New exterior penetrations in heritage buildings (maison-patrimoniale) may require Ville de Luxembourg façade-works authorisation
• Insulated-façade (ITE) systems require sealed collar detail to maintain the insulation continuity — this is skilled work, not a handyman job

Installation time:

• Simple straight-run install: 2–3 hours
• Standard install with 1 elbow through exterior wall: 3–5 hours
• Complex insulated-cavity install: 5–7 hours, sometimes split over 2 days for drying between cuts and sealing

Dryer vent cleaning is the most cost-effective maintenance you can do on a laundry system. Clogged lint in dryer ducts is one of the top 5 causes of residential fires in Europe and Luxembourg fire statistics track this closely.

Cleaning costs TTC:

• Short run (< 3 m, single family home): €90–€130
• Standard run (3–6 m, residential house): €120–€180
• Long or complex run (6–8 m, multiple bends or high access): €150–€220
• Commercial laundry or shared vent system: €220–€400+
• Add-on: full dryer internal service (lint cage, blower housing, thermostat check): €40–€80

Frequency of cleaning (LU norms):

• Annually for high-use households (4+ loads/week)
• Every 18 months for average household (2–3 loads/week)
• Every 2–3 years for low-use single-person households
• Immediately if you notice any warning signs

Warning signs that cleaning is needed:

• Dryer takes 30 %+ longer than usual to dry clothes
• Clothes come out damp or hot-wet rather than dry
• Hot external surface on the dryer during operation
• Burning-plastic smell during cycle
• Lint accumulating around the exterior louvre
• Lint trap itself does not collect normal amounts (suggests backflow)
• Humidity in the laundry room rises noticeably during cycles

Professional cleaning process:

1. Airflow test at the exterior louvre (measures CFM/m³-per-hour baseline)
2. Disconnect dryer from duct
3. Brush the duct from the dryer end, typically with a rotary brush on flexible rod
4. Brush again from the exterior, to be thorough
5. Vacuum lint extracted at both ends
6. Clean exterior louvre and lubricate backdraft damper
7. Clean dryer lint cage, blower housing behind the drum, and internal lint filter (if add-on paid)
8. Reconnect and seal
9. Final airflow test — should show 60–90 % improvement on a clogged system

What a declared cleaning pro should document:

• Before/after airflow measurements
• Photo of lint extracted
• Confirmation of exterior damper function
• Any observed damage or deterioration
• Next recommended clean date

DIY cleaning — when it works and when it doesn't:

• DIY-feasible for simple, accessible short runs (< 3 m) with rigid metal duct and disconnectable joints
• DIY kit (flexible rod with brush, drill attachment): €25–€40 from LU hardware stores
• Not DIY-feasible for: apartments with shared venting, runs > 4 m, insulated or concealed ducts, any run with 2+ bends, or if airflow tools are not available for validation
• Budget 1–2 hours of your time for DIY, plus €30 for kit

Fire-risk economics:

• Typical dryer vent fire starts with 8–12 g of lint and builds to full flame in 20–40 seconds
• LU home insurance covers dryer fires but premiums rise after claim
• Average fire damage in a laundry room: €12 000–€45 000 in the LU market
• An annual professional clean at €120–€180 is the cheapest insurance available

Declared vs undeclared cleaning providers:

• Declared ramoneur or HVAC specialist: €120–€220 TTC, invoice, tax-deductible as frais domestiques on primary residence
• Undeclared "handyman": €50–€100 cash, no airflow test, no documentation, no insurance liability if they damage the dryer
• Total economic cost is usually within 20 % when you factor the frais-domestiques deduction

Three quotes for the same install or clean can land at very different prices. Below is how to structure a shared brief and compare without confusion.

Brief for install quote:

• Dryer brand and model (affects duct diameter, typically 100 mm but some are 110 mm)
• Home type (apartment, house) and wall composition where vent will go through (brick, cavity, ITE-insulated)
• Desired vent run length and approximate route
• Duct material preference (rigid aluminium strongly preferred)
• Exterior louvre preference (with backdraft damper)
• Interior finish standard expected
• Any architectural constraints (heritage, co-property rules)
• TVA line (17 %)
• Timing

Brief for clean quote:

• Dryer brand and model
• Approximate length and bends of the existing run
• Wall type the duct runs through
• Last cleaning date (if any)
• Current symptoms (slow drying, odour, etc.)
• Access — is the exterior louvre reachable? Is the dryer disconnectable?
• Add-ons requested (internal blower clean, thermostat check)

Quote-comparison checks:

• Duct material named — "rigid aluminium, 100 mm" is comparable; "vent pipe" is not
• Bend count and run length explicit — this drives labour hours
• Louvre brand/model named — backdraft damper quality varies hugely
• Airflow test included — for cleaning, this is a quality marker
• TVA line — always 17 %, never 3 %
• Warranty on fitting — 2 years minimum for an install
• Insurance — HVAC and public liability cover confirmed on request
• Declared status — Autorisation d'établissement checked

Red flags:

• Install prices below €150 on anything more than a 2 m straight run — likely PVC flex and skipped detail
• Cleaning below €70 — probably no airflow test, no documentation
• No mention of backdraft damper on install
• Cash-only pricing
• Refusal to provide written scope or ruler measurement
• "We just use whatever duct we have in the van" — no material preference = low quality

Tight-brief convergence:

• Three declared installers on the same install brief: ±20 % TTC
• Three declared cleaners on the same cleaning brief: ±15 % TTC
• 30 %+ gap usually means different duct material (PVC vs aluminium) or different scope
• 40 %+ gap usually means declared vs undeclared

When to retain the existing dryer vs replace it:

• If vent install cost + new dryer is close to the cost of a heat-pump dryer, the heat-pump wins on lifetime cost every time
• If the existing dryer is < 5 years old and still efficient, install or clean the vent
• If the existing dryer is 8+ years old with failing thermostats or poor energy class (D or E), switch to heat-pump instead

Common LU scenarios and the right choice:

• Apartment Luxembourg-Ville, no existing vent, co-property forbids penetration → heat-pump dryer, no vent
• Semi-detached house, 5-year-old vented dryer, 3 m existing duct in good shape → clean the vent at €140, keep the dryer
• Rural house, older vented dryer, 8 m duct with lint build-up → clean the vent, but plan for heat-pump replacement within 2 years
• New-build 2026, developer offered both options → heat-pump, no vent
• Commercial laundry → vented with cleaning contract, regulatory compliance matters