Heat Pump Stuck in Defrost / Frozen Outdoor Unit — Repair Cost in France (2026)
France national estimate: €100–€700 for a heat pump — stuck in defrost / frozen outdoor unit — built from French sources, never converted from another country's prices. Pick your quality tier and enter a postal code to localize. Reviewed July 2026.
Also searched as: “heat pump stuck in defrost repair cost”, “heat pump frozen outdoor unit fix cost”, “heat pump iced over repair price”.
€100–€700 France national estimate for a heat pump — stuck in defrost / frozen outdoor unit. Localize below.
| Most common repair | Typical total (EUR) | DIY? |
|---|---|---|
| Overhauling the defrost system: defrost sensor, condensate tray, tray heater and drain | €200–€700 | Pro recommended |
| Clearing and cleaning the iced-up outdoor unit and resetting the defrost cycle parameters | €100–€300 | Pro recommended |
Plus a typical service-call / diagnostic fee of €80–€170, often credited toward the repair.
Pick a quality tier for a class-typical estimate, or a specific French brand to override it (both adjust the parts portion only, never labour). Enter a French postal code to localize to your region's labour costs. All figures stay in euros, never converted from another country's prices. Everything updates without a page reload.
Base: published rates from 3 French heating & cooling companies (2026-07) · France national base range (Insee Tous salariés 2023) · Reviewed July 2026 · Estimated
How do brand and quality tier change the repair cost?
Brand and tier adjust the parts portion only — never labour. Value-tier brands — Ariston, Chaffoteaux and Auer — carry some of the lowest parts factors; Saunier Duval, ELM Leblanc, De Dietrich, Chappée, Atlantic, Thermor and Riello form the mainstream core of the French heating market, with Saunier Duval as the price anchor for this list; premium makers — Vaillant, Frisquet and Viessmann — source mainly through the manufacturer's own network (pièces d'origine). On the heat-pump and split-system side, Daikin, Mitsubishi Electric and Toshiba sit in the premium tier, Panasonic, LG and Atlantic in the mainstream core, and Airwell at the value end. Pick a tier for a class-typical estimate, or a specific French brand to override it.
| Brand | Parts factor | Basis |
|---|---|---|
| Basic tier parts ×0.925 | ||
| Chaffoteaux | ×1 | Baseline — no parts adjustment |
| Ariston | ×1 | Baseline — no parts adjustment |
| Auer | ×0.85 | Parts ×0.85 (published rates from 2 local repair companies) |
| Airwell | ×0.85 | Parts ×0.85 (published rates from 3 local repair companies) |
| Mid-range tier parts ×1.1 | ||
| Saunier Duval | ×1 | Baseline — no parts adjustment |
| ELM Leblanc (Bosch) | ×1.5 | Parts ×1.5 (published rates from 2 local repair companies) |
| De Dietrich | ×1.3 | Parts ×1.3 (published rates from 5 local repair companies) |
| Chappée | ×1.5 | Parts ×1.5 (published rates from 3 local repair companies) |
| Atlantic | ×0.9 | Parts ×0.9 (published rates from 3 local repair companies) |
| Thermor | ×1.15 | Parts ×1.15 (published rates from 2 local repair companies) |
| Riello | ×0.9 | Parts ×0.9 (published rates from 2 local repair companies) |
| Cuenod | ×1.1 | Parts ×1.1 (published rates from 2 local repair companies) |
| Panasonic | ×0.85 | Parts ×0.85 (published rates from 3 local repair companies) |
| Premium tier parts ×1.15 | ||
| Frisquet | ×1.05 | Parts ×1.05 (published rates from 2 local repair companies) |
| Vaillant | ×1.15 | Parts ×1.15 (published rates from 3 local repair companies) |
| Viessmann | ×1.1 | Parts ×1.1 (published rates from 2 local repair companies) |
| Daikin | ×1.35 | Parts ×1.35 (published rates from 2 local repair companies) |
| Mitsubishi Electric | ×1.6 | Parts ×1.6 (published rates from 2 local repair companies) |
Base: French brand parts factors from French parts retailers and repair guides; tier factor = median of the tier's French brands · Applied to the parts portion only · Reviewed July 2026 · Estimated
Heat Pump stuck in defrost / frozen outdoor unit: what usually causes it? Estimated
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Overhauling the defrost system: defrost sensor, condensate tray, tray heater and drain
Pro recommended€200–€700
On French air-to-water heat pumps, repeated defrost cycles are seen mainly in the humid regions of the North-West and at the bottom of valleys, when the defrost water no longer drains away and refreezes under the coil. Repairing the anti-frost system is priced at between €200 and €700 by the French comparison sites, the spread coming from whether it is a simple sensor or a tray and a heater that have to be changed. The diagnosis goes through reading the pressures and temperatures of the refrigerant circuit, reserved for an operator holding the individual competence certificate (attestation d'aptitude).
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Clearing and cleaning the iced-up outdoor unit and resetting the defrost cycle parameters
Pro recommended€100–€300
The repairer's first move when the heat pump stays stuck in defrost is to check that the fan is not obstructed and that the outdoor coil is not clogged by leaves or a hedge planted too close, a cause explicitly cited by the French energy suppliers. This is a short job with no part, whose pricing basis is exactly that of the first diagnosis on a heat pump that has stopped heating: the national fixed price recorded at €99 including VAT with the call-out and labour included, and €100 to €300 at independents depending on the time spent. The two ranges coincide because it is the same one-to-two-hour visit with no materials, and not because the price has been carried over from one repair to another. Resetting the defrost thresholds is done in the controls' installer menu, which closes the door to DIY.
Base: published rates from 3 French heating & cooling companies (2026-07) · France national base range (Insee Tous salariés 2023) · Reviewed July 2026 · Estimated
How much is a service-call fee for heat pump repair?
Most French companies charge a call-out / diagnostic fee of €80–€170, often credited toward the repair if you go ahead. It is separate from the repair totals above. VAT on French home heating and cooling work is usually the 10% reduced rate for repair and maintenance in a dwelling completed more than two years ago, not the 20% standard rate; some energy-performance improvement work can fall to 5.5%, depending on the equipment fitted and the rules in force. Many independent installers and micro-entrepreneurs also fall under France's small-business VAT exemption (franchise en base de TVA, €37,500 threshold for services) and charge no VAT at all — their invoices carry the note "TVA non applicable, art. 293 B du CGI". Prices displayed to consumers in France are quoted TTC (toutes taxes comprises — all taxes included).
Is it worth repairing a heat pump, or should you replace it?
A common rule of thumb: if the repair cost exceeds roughly half the price of a comparable new unit — or the appliance is past ~8 years for a heat pump — replacement is often the better value. The calculator's localized totals give you the number to weigh against a new-unit quote.
Prices are region-level estimates based on regional wage data (Insee, Tous salariés 2023 all-employees base), not fake city precision. Shopping in the U.S.? See the U.S. version (USD). In Canada? See the Canadian version (CAD). See the methodology for the localization method and named sources, or return to the France HVAC repair guide.
Reviewed by a Red Seal–certified appliance technician who also holds a Technical Safety BC gas ticket (Gas-C) and an ODS/halocarbon refrigerant ticket (CFC/HCFC/HFC).