Air-duct cleaning cost in Luxembourg (2026)

A €480 visit at 17 % TVA comes to €561,60 all-in. Because this is a cleaning service rather than a renovation, the 3 % super-reduced rate does not apply — this is always invoiced at the standard rate.

Why per-visit rather than per-hour:

• Equipment mobilisation (truck, compressor, vacuum, brush sets) is a fixed cost — splitting it across a fictional hourly rate hides the real cost
• Declared-labour providers pay insurance premiums and social charges that are amortised across visits
• Most competent operators finish a 90 m² apartment in 2 to 3 hours, not the 5 to 6 suggested by hourly quotes

Drivers within the range:

• Vent count. Each additional vent above the baseline adds roughly €20–€35
• System type. Simple extract-only VMC at the bottom of the range; CMV double-flux with supply and extract ducts at the top
• Access. Vents behind integrated furniture or above plasterboard ceilings add demounting time — €50–€120 per obstructed vent

The spread from €290 to €660 reflects five real variables. A quick site visit or a ten-minute phone intake with accurate vent count and system type gives a tight quote.

• Total duct length. A compact VMC loop in a studio is 8 to 12 metres. A full double-flux system in a detached house runs 40 to 60 metres of flexible duct plus rigid trunk lines. Pricing follows roughly €6–€10 per linear metre after the base fee.
• Single-flow vs. double-flux. Extract-only VMC (kitchen and bathroom extracts) is simpler: one fan, one set of ducts, one common trunk to the roof or façade. CMV double-flux adds a supply side and a heat recovery unit — double the duct work.
• Filter change and heat exchanger clean. CMV double-flux systems require periodic filter changes (F7/G4 classes) and heat exchanger cleaning. Filters: €45–€95 per set. Exchanger clean: €60–€120 per visit.
• Access obstructions. Ducts routed above plasterboard ceilings in post-renovation flats are fine if inspection hatches exist; if not, creating a hatch adds €80–€180 per access. In traditional stone houses in Echternach or Clervaux some runs are cut through stone — these need wider-bore brushes and take longer.
• Age and prior cleaning history. A never-cleaned 10-year-old system needs a heavier intervention — slower passes, more brush changes, double-vacuum. Expect the top of the range. A system cleaned 4–5 years ago sits in the middle of the range.

Bundled services. A visit combined with an annual boiler service or AC service — common in Luxembourg where installers handle both — typically saves €40–€80 vs. booking the visits separately.

A duct-cleaning visit that does its job leaves you with a short written report, photographs before and after, and a clean indoor air measurement. Anything less is a shortened version.

Always included in a compliant visit:

• Pre-intervention visual inspection of vents, trunk lines where accessible, and the exchanger
• Before-after photographs of at least 3 typical vent interiors — taken with the inspection camera common to the trade
• System isolation with plastic sheeting at each vent to contain particle release
• Truck-mounted or industrial vacuum with HEPA-filter final stage
• Rotating-brush pass through each branch of flexible ducting
• Hand-cleaning of the trunk lines and of the exchanger (for CMV double-flux)
• Filter replacement on CMV double-flux (filters supplied or client-provided)
• Post-intervention visual check and written sign-off with date and technician signature
• TVA line at 17 %

Usually separate line items:

• New inspection hatch through a plasterboard ceiling — €80–€180
• Additional filter sets beyond the two included on a CMV — €45–€95 per set
• Heat-recovery cell service if the core needs a deep wash — €80–€150
• Air-quality test (particle count, CO₂ baseline) — €120–€220 as an optional add-on
• Emergency out-of-hours visit — €80–€150 premium

What is not a cleaning service's job:

• Replacing damaged flexible duct (that's installer work)
• Fan-motor repair (installer or electrician work)
• Mould remediation beyond the surface clean — if substantive mould is found, a specialist remediation firm is the right next call

Red flags in a quote:

• Offer of a "free inspection" followed by a hard sell — reputable firms charge a declared visit fee that applies to the cleaning if you proceed
• No before-after photos promised — the visit is not documented
• Cash-only pricing — the service is informal and leaves no VAT trail for resale or landlord expense

A domestic duct system does not need cleaning often. Marketing pitches suggesting annual cleaning overstate the case. The indications that justify a visit are specific.

Strong indications:

• Post-renovation. Drywall dust, sanding residue and packaging debris contaminate ducts during a renovation. A cleaning scheduled 2–4 weeks after completion (so the system has flushed the obvious dust on its own) pays for itself in recovered airflow.
• Visible mould at vents. Black or green discolouration around kitchen and bathroom extracts in older flats often signals accumulated biofilm in the duct. A cleaning plus filter upgrade is the right first step; persistent mould means a remediation specialist.
• Allergies or respiratory issues newly developed by occupants, especially after a move to an older property. The cleaning is one line of investigation alongside filter upgrades and ventilation-rate checks.
• New occupancy. Moving into a previously rented flat where maintenance history is unknown; a cleaning at handover resets the baseline.
• Pet ownership combined with long neglect. Large dogs shedding into the air stream, combined with 7–10 years of no cleaning, make a visit pay back.
• Reduced airflow at some vents. Flow measurement dropping to 60 % of original indicates a partial blockage — cleaning before replacing the fan.

Weak or absent indications:

• Annual cleaning on a well-maintained, filter-serviced double-flux system is unnecessary. The heat exchanger is the component that accumulates deposits; cleaning cycles of 4–7 years are the norm.
• "Dirt-on-the-face-cloth" demonstrations from door-to-door callers are marketing, not diagnostic

Recommended frequency:

• VMC simple flux (extract only): every 5–7 years
• CMV double-flux (supply + extract): filter change every 6–12 months, exchanger clean every 2–3 years, full duct cleaning every 5–7 years
• HVAC with full duct network (rarer in Luxembourg): full clean every 3–5 years
• Commercial systems in restaurants, clinics, and schools: follow sector regulations, typically 1–2 years

Duct cleaning sits in a category where cash-in-hand offers are common — and where the downside of accepting one is real. Three points explain why the declared route is the right route.

Warranty and responsibility. A duct cleaning that damages a flex line or causes a fan failure should be covered by the contractor's professional liability insurance. Declared operators in Luxembourg carry this cover as a condition of their Autorisation d'établissement. An unregistered cleaner is uninsured — any damage becomes yours.

Rental and insurance context. Tenants in Luxembourg are often required by lease to maintain certain systems; proof of servicing is typically expected at the lease end. A declared invoice with a VAT number satisfies landlords, the commune's housing inspector when a rental commission is involved, and insurance claims after a pollution event. A cash receipt does not.

TVA and principal residence. Cleaning invoices are always at the standard 17 %. There is no super-reduced rate path — this is not a renovation. Do not accept a 3 % invoice: if the contractor is invoicing cleaning at 3 %, something is wrong with the paperwork.

What the invoice must show:

• Contractor trade name, address, tax number
• Autorisation d'établissement reference
• Date of service, address of the property, name of the technician
• Description of the work including number of vents, duct length where measurable, filters changed
• Separate labour and materials lines where applicable
• TVA at 17 %
• Payment terms and bank details (a receipt is not an invoice)

The three-provider quote check for duct cleaning:

• Same property brief sent to all three
• Confirmed vent count and system type
• Inspection video and cleaning photos as deliverables
• All three at 17 % TVA
• Warranty on fan and motor components for at least 90 days post-cleaning

A spread of ±15 % across three declared providers is normal. A 40 %-below outlier is almost always an unregistered cleaner or a hidden extra on the final bill.

Luxembourg's building stock shapes the cleaning visit more than the technician's hourly rate. Three patterns dominate.

Dense urban flats (Luxembourg-Ville, Belair, Limpertsberg, Kirchberg). Mostly post-2000 buildings with CMV double-flux as standard. Vents above plasterboard ceilings with inspection hatches; easy-access kitchen and bathroom extracts on short trunk runs. Typical visit: 2,5–3,5 hours, €380–€520 for a 90 m² flat. A shared-exhaust risk on older blocks: the trunk serves multiple flats — coordinate with the syndic for works on the communal stack.

Post-2010 detached houses (Bertrange, Strassen, Walferdange, Mamer). Double-flux standard with heat exchanger in the basement or technical cupboard. 40–60 metres of duct, 12–18 vents. Typical visit: 4,5–6 hours, €490–€640. These systems are typically well-documented — the homeowner can produce the commissioning plan, which shortens the visit and reduces the quote.

Traditional stone and terraced houses (Grund, Pfaffenthal, Clausen, older Esch centre). VMC simple-flow retrofitted into 19th-century properties. Short duct runs but cramped technical spaces — often in the attic or behind a kitchen cabinet. Typical visit: 2–3 hours, €320–€460 for a 120 m² house. Access can drive the quote: hatches cut through original plasterwork are not accepted; coordination with the installer is sometimes needed.

Rural and semi-rural communes (Mersch, Ettelbruck, Diekirch, Wiltz). Mix of single-flow and double-flux. Larger property footprints but lower vent counts. Travel line on the invoice — €30–€80 depending on distance from the technician's base. Book these calls in shoulder seasons (Apr–May, Sep–Oct) when the travel line can often be waived on a full-day booking.

Commercial and co-working spaces across all communes require a documented duct-cleaning cycle as part of their occupational-health file. Expect an inspection video as standard and a full before-after report with particle counts at kitchen and meeting-room vents.

The core fee is stable; the surprises usually appear on the day if the site visit was not thorough.

Hidden costs to anticipate:

• Emergency vent access. When plasterboard above a vent has to be cut to reach a blockage — €80–€180
• Replacement flexible duct on a damaged section discovered during the visit — €40–€90 per linear metre supplied and fitted
• Post-visit re-plastering where hatches were opened — €80–€200
• Extra filter sets beyond those included — €45–€95 per set
• Acoustic enclosure clean on a loud exchanger — €60–€120

Red flags:

• "Your ducts contain visible mould — urgent remediation required." Ask for the photograph, have it reviewed, and get a second opinion. Pressure-sell is the first sign of a low-quality operator.
• A quote significantly lower than the other two, with no inspection video promised and cash-only pricing
• Offers to "treat" ducts with a chemical spray post-cleaning. In most residential cases this is unnecessary and can leave residues on heat exchangers — decline unless specifically recommended by an independent remediation specialist.
• A "lifetime guarantee on ducts". Ducts don't fail; this is meaningless.

Long-term value.

• Annual filter change on a double-flux system at €45–€95 is the single highest-ROI action you can take
• Professional cleaning every 5–7 years is the reasonable cadence
• Keeping the commissioning invoice and service log gives documented proof of maintenance — useful for rental, resale and insurance
• A modest investment in a CO₂ sensor (€40–€80) provides actionable signal on whether your ventilation is delivering air: when CO₂ spikes above 1 200 ppm in occupied rooms, filters and airflow need attention

Over a decade, the total cost of ownership of a well-maintained VMC or CMV system is usually under €1 200 in cleaning visits plus €400–€800 in filters — a small premium against the energy savings of a working heat-recovery unit and the indoor-air-quality benefit.