Is goose down warmer than duck down?

Not at equal fill power. A 600-FP goose comforter and a 600-FP duck comforter trap the same volume of air per ounce of fill (600 cubic inches per ounce, by definition under the IDFB steam-conditioning method) and provide the same insulation. Goose down can reach higher fill powers — commercial goose runs 500–900+ and tops out near 1,000, while duck typically runs 500–750 with rare 800-grade options — so a goose comforter delivering an equal TOG can be lighter and pack smaller. The fill weight in ounces matters as much as fill power; total warmth scales with fill power × fill weight.

Why is goose down more expensive than duck down?

Goose down commands a 30–50% raw-material premium because supply is smaller and only goose down reliably produces the >750 FP clusters the luxury market demands. Geese mature in 8–9 months versus 7–8 weeks for ducks, so each goose yields fewer harvests over its productive life. Reported raw-material prices place 850-FP goose near $13/oz and 800-FP duck near $9/oz. Retail comforter spreads (queen, US): bulk duck blends $80–150; mid-tier goose 600 FP $200–400; premium 700–800 FP Hutterite or Hungarian $400–900; eider $5,000+.

Is duck down ethical?

It can be — ethics depends on supply-chain certification, not species. Three certifications cover down sourcing: the Responsible Down Standard (RDS, Textile Exchange, version 3.0, 2019), the Global Traceable Down Standard (Global TDS, NSF), and Downpass (German industry-led). All three prohibit live-plucking and force-feeding. Live-plucking has historically been a concern in some Hungarian and Polish goose operations; force-feeding is more strongly associated with foie-gras-overlap duck farming. RDS is the most widely adopted; Global TDS adds parent-farm traceability; Downpass also adds content and quality testing alongside welfare audits.

What fill power should I look for in a comforter?

For comforters and duvets: 500–600 FP is entry level; 600–700 FP is solid all-season; 750–850 FP is winter or luxury tier. For pillows: 600–725 FP is mid-tier, 750–850 FP (often Hutterite) is premium. For down jackets: 650–800 FP is standard, 850–900+ FP is the warmth-to-weight tier. For sleeping bags: 750–800 FP is mid, 850–950 FP is premium. Eiderdown (1,000–1,200 FP) is a separate category by price and supply (~$5,000–10,000/kg, ~4,000–6,000 kg total annual harvest globally).

How long do down comforters last?

Properly cared-for down comforters last 10–15+ years. The variables that govern lifespan: a washable duvet cover used continuously to absorb body oils, infrequent washing (1–2 times a year maximum, or professional cleaning every 2–3 years), warm-not-hot water (40°C / 100°F max), no chlorine bleach or fabric softener (softener coats cluster barbules and permanently reduces loft), and tumble-drying on low with dryer balls to restore loft. Larger clusters (typically goose) retain loft slightly longer over the product life, but shell construction and care routine matter more than species.

What is the difference between Hungarian and Hutterite goose down?

Hungarian goose down comes from white geese raised in Hungary, traditionally 600–800 FP, with a longer history that includes live-plucking practices (RDS certification is the key check). Hutterite goose down comes from free-range Embden geese raised on Hutterite colonies in Western Canada (Lajord Colony, Saskatchewan is the most-cited example), allowed to mature longer, producing larger clusters and higher FP (700–850+, with St Genève's Lajord line at 850 FP). Hutterite is generally regarded as the top North American premium tier; quality Hungarian with RDS certification competes at similar FP grades.

Is eider down worth the price?

Eiderdown (Somateria mollissima, hand-collected from nests in Iceland and Eastern Canada) reaches 1,000–1,200 FP — the highest commercial fill power available. At ~$5,000–10,000 per kilogram raw and ~4,000–6,000 kg of total global annual harvest, a queen-size eider duvet typically retails $5,000–10,000+. The performance edge over premium 850-FP goose is small in absolute warmth at typical fill weights — the value proposition is the warmth-to-weight ratio, the cluster resilience over decades, and the hand-collected, non-killed sourcing model. For most buyers, premium 800–850 FP goose at one-tenth the price delivers a comparable in-bed result.

Are down comforters good for hot sleepers?

Hot sleepers should optimize for lower fill weight even at high fill power. A high-FP, low-fill-weight comforter (e.g., 800 FP × 18–22 oz queen) drapes light and breathes through a tightly woven cotton sateen or percale shell. Down's natural moisture-wicking capacity (it can absorb up to ~20% of its weight in moisture before feeling damp) outperforms most synthetic alternatives for humidity management. Pair with a breathable shell at appropriate thread count and a washable duvet cover; avoid heavy fill weights and synthetic shell fabrics that trap heat against the body.

Goose Down vs Duck Down: Fill Power, Cluster Size, Cost, and What the Data Shows

Q: Does duck down smell?

Properly washed duck down meeting IDFB cleanliness specifications (oxygen number ≤10 mg O₂/100g and turbidity ≥300 mm) is essentially odorless. The musty smell consumers occasionally report indicates insufficient washing rather than a species defect. Geese tend to run slightly cleaner on average because of diet and ground-contact differences, but cleaning quality dominates any species effect. The 'hypoallergenic' or 'super-clean' tier requires oxygen number ≤4.8 and turbidity ≥500 mm under IDFB rules. Diet-causation framing — 'ducks eat meat so they smell' — overstates the species role and obscures the actual variable, which is processing.

Goose down is not categorically warmer than duck down. At equal fill power, both insulate the same — fill power (cubic inches per ounce, IDFB steam-conditioning method) directly measures how much air a given mass of down traps. Goose’s real advantage is its ceiling: commercial goose reaches ~1,000 cubic inches per ounce, while duck plateaus around 800, so a goose comforter at equal warmth is lighter. Duck is typically 30–50% cheaper per ounce, and the persistent “duck smells” claim is a processing-quality issue (IDFL turbidity and oxygen-number testing), not a species attribute.

Goose Down vs Duck Down at a Glance

Attribute	Goose down	Duck down	Source
Typical cluster diameter (full loft)	~30–55 mm	~20–35 mm	Au Lit “Dissecting Down”; St Genève spec sheets
Commercial fill-power range	500–900+	500–750 (rare 800)	IDFB; Maholi; Backpacker
Maximum FP achievable	~1,000	~800	Au Lit; YumeRest; AMC Outdoors
Cleanliness compliance threshold	O₂ ≤10, turbidity ≥300 mm	O₂ ≤10, turbidity ≥300 mm	IDFL Brief Explanation of Tests
”Hypoallergenic” / super-clean threshold	O₂ ≤4.8, turbidity ≥500 mm	O₂ ≤4.8, turbidity ≥500 mm	IDFL USA-2000 Labeling Standards
Reported raw-material price (recent)	~$13/oz at 850 FP	~$9–10/oz at 800 FP	YumeRest; Ripstop by the Roll product pricing
Major source regions	Canada (Hutterite), Hungary, Poland, China, Russia	China (majority), Eastern Europe	Au Lit; Globe & Mail
Available welfare certifications	RDS, Global TDS, Downpass	RDS, Global TDS, Downpass	Textile Exchange; NSF; Downpass
Live-plucking historical concern	Higher (HU/PL pre-RDS)	Lower (rarely live-plucked)	Textile Exchange RDS documentation

The species columns are identical on cleanliness threshold and certification availability. They diverge on cluster size, peak fill power, and price — the three properties that drive the perceived “luxury” gap.

Fill Power Explained: Cubic Inches per Ounce, ±5% Tolerance

Fill power is the volume (in cubic inches) that one ounce of down lofts to under the IDFB steam-conditioning method (adopted ~2005, replacing older Box and Tumble Dry methods). Higher FP means more air trapped per ounce — the direct mechanism for thermal insulation. Per IDFB rules, labeled FP must match tested value within ±5%; a “800 FP” label is compliant between 760 and 840 in³/oz. ASTM D4522 references IDFB methods for US compliance.

Commercial ranges by species:

Goose down: 500–900+ commercial; premium Hutterite/Polish/Hungarian 700–850; peak near 1,000
Duck down: 500–750 commercial; rare 800-grade premium duck
Eider down (Somateria mollissima, hand-collected from nests in Iceland/Eastern Canada): 1,000–1,200; technically duck-family, the highest-FP fill commercially available

The claim “geese are the only birds large enough for high fill power” is contradicted by eider — a duck that produces the largest commercial cluster on the market, disqualifying the categorical “goose is best” framing.

Cluster Size: Where Goose Has a Real Edge

Setting eider aside, mature commercial goose clusters are larger than duck clusters: premium goose plumules run ~30–55 mm, duck ~20–35 mm. Larger clusters trap a larger air pocket, which is the mechanism by which goose reaches higher fill powers. Cluster diameter alone doesn’t determine FP — barbule density and bird maturity also contribute, so a small cluster from a young goose can underperform a mature duck cluster.

For consumers: at the same labeled FP, goose and duck trap the same air per ounce. The goose advantage is reaching a higher labeled FP, not being warmer at matched FP.

Total Loft = Fill Power × Fill Weight

Most pages on this topic present FP as the only spec that matters. It isn’t. Total warmth ≈ fill power (in³/oz) × fill weight (oz of down loaded into the shell):

Comforter	Fill power	Fill weight	Total volume	Effect
A	700 FP	30 oz	21,000 in³	Heavier, drapes more
B	800 FP	22 oz	17,600 in³	Lighter, packs smaller, slightly less warm
C	800 FP	26 oz	20,800 in³	Equal warmth to A, lighter

A 700-FP, 30-oz comforter and an 800-FP, 26-oz comforter offer roughly the same warmth. Reading FP alone — assuming “higher FP = warmer” — produces incorrect comparisons. High-FP, low-weight is right for warmth-to-weight (jackets, sleeping bags); moderate-FP, high-weight can be right for cold-weather beds. Comforters often plateau at 600–750 FP because in-bed weight is acceptable and total fill weight scales easier than peak FP.

Does Duck Down Smell? What IDFL Tests Measure

The “duck smells” claim is partially true and largely overstated. IDFL operates two cleanliness tests:

Oxygen number (mg O₂ per 100 g): organic residue. Lower is cleaner.
Turbidity (mm): water clarity after a standardized wash extract. Higher is cleaner.

IDFB compliance thresholds for both species: oxygen ≤10, turbidity ≥300. The “hypoallergenic” / super-clean tier: oxygen ≤4.8, turbidity ≥500. Properly washed duck and goose routinely sit in the oxygen 1.6–4 range — well inside super-clean.

The variable is processing quality, not species. Goose diet runs slightly cleaner on average, but processor-to-processor variation exceeds species variation. Cheap fill (duck or goose) washed only to the IDFB threshold can carry detectable residual oils; premium fill at oxygen ≤4.8 reads as odorless. The “ducks eat meat, geese eat grass” framing is folk simplification — both are opportunistic omnivores, and washing dominates.

Where Down Comes From: Hutterite, Hungarian, Polish, Chinese, Eider

Down origin matters because farming method, bird maturity, and raw-down handling all affect cluster size and cleanliness. Reported origin tiers:

Origin	Species	Typical FP	Premium tier?	Notes
Canadian Hutterite (Lajord and other AB/SK colonies)	White goose	700–850+	Yes	Mature free-range Embden geese; supplied to Au Lit, St Genève, Canadian Down & Feather
Hungarian white goose	White goose	600–800	Yes	Live-plucking historically tolerated; RDS or Global TDS certification critical
Polish white goose	White goose	650–800	Yes	Soft clusters; broadly RDS-aligned
Siberian / Russian goose	White goose	700–800	Niche premium	Limited availability
Chinese goose & duck	Both	500–800	Mixed	~80% of global down supply; quality ranges widely
Iceland / Eastern Canada eiderdown	Common eider	1,000–1,200	Ultra-luxury	Hand-collected from nests; ~$5,000–10,000/kg; ~4,000–6,000 kg/year global yield

A label reading “Hungarian goose down” without a specific FP number and a welfare certification carries less information than a label reading “RDS-certified white goose down, 700 FP, ±5%.” Origin is shorthand; the IDFB-tested FP and the welfare certification are the documents that resolve the marketing.

Price Differences: Why Goose Costs 30–50% More per Ounce

Three structural reasons drive the goose-over-duck price spread:

Maturation time. Geese take 8–9 months to reach harvest weight; ducks reach harvest weight in 7–8 weeks. Goose production cycles are slower by an order of magnitude, so each goose harvest is more capital-intensive per cluster.
Cluster size economics. The luxury market demands fill power above 750. Only goose reliably delivers that range outside the eider niche. Premium-tier supply is therefore tied almost entirely to goose, which raises bid prices.
Geographic concentration. Premium goose down is sourced from a small number of regions (Hutterite Canada, Hungary, Poland, parts of China and Russia). Duck down is geographically broader and supplied at higher volume, so duck pricing is closer to commodity.

Reported raw-material prices: ~$13/oz for 850-FP goose, ~$9/oz for 800-FP duck. Translated to retail comforters (queen, US market):

Bulk duck-blend comforters: $80–150
Mid-tier 600-FP goose: $200–400
Premium 700–800 FP Hutterite/Hungarian: $400–900
Eiderdown duvets: $5,000+

Most of the 30–50% raw spread compresses at retail because shell fabric, thread count, fill weight, baffle construction, and brand margin dominate finished-product cost. A premium duck comforter can outperform a budget goose comforter — fill species is one variable among many.

Certifications: RDS vs Global TDS vs Downpass

Three down-welfare certifications cover the supply chain. All three prohibit live-plucking and force-feeding; they differ in scope, traceability, and content testing.

Requirement	RDS (Textile Exchange)	Global TDS (NSF)	Downpass (German industry-led)
Bans live-plucking	Yes	Yes	Yes
Bans force-feeding	Yes	Yes	Yes
Whole-supply-chain audit	Yes	Yes (parent farm to processor)	Yes
Independent third-party audit	Yes (Control Union et al.)	Yes (NSF)	Yes
Certification cycle	Annual surveillance, 3-year recertification	Annual surveillance, 3-year recertification	2-year recertification
Origin / steward	Textile Exchange + The North Face (2014)	NSF International	German down industry consortium
Down content/quality testing built in	No (welfare focus)	No (welfare focus)	Yes (combined welfare + content)

RDS, the most widely adopted of the three, was launched in 2014 (revised 3.0 effective July 1, 2019). Textile Exchange published the final criteria for its Materials Matter Standard (MMS) in December 2025; MMS becomes effective on December 31, 2026 and mandatory on December 31, 2027. Down is excluded from MMS v1, so RDS remains the active welfare certification for down through the transition window.

Global TDS adds parent-farm traceability — the supply chain must trace back to the specific farm where the parent flock lived, not just the slaughter facility. Downpass alone bundles welfare audits with content/quality testing (down/feather ratio, cleanliness), which is why some premium European brands prefer it.

A label that claims “ethical down” without naming one of these three standards carries no third-party verification.

Goose vs Duck by Product Class: Decision Table

The product class shifts the optimization. The same fill power means different things across these four categories — the table below maps target FP, fill-weight range, species recommendation, and the label fields to verify.

Product class	Target FP	Typical fill weight	Species recommendation	Label fields to verify
Comforter / duvet (all-season)	600–700	25–35 oz	Either; duck at parity is cheaper	FP, fill weight (oz), down/feather ratio
Comforter / duvet (lightweight winter)	750+	18–25 oz	Goose (lighter at equal warmth)	FP + fill weight together
Pillow	600–725 (mid), 750–850 (premium)	20–30 oz	Goose for loft retention; duck at parity acceptable	FP, fill weight, baffle/chamber type
Down jacket / parka	650–800 (standard), 850–900+ (premium)	Garment-dependent	Goose for 800+; duck acceptable at 650–800	FP, down/feather ratio, DWR finish
Sleeping bag	750–800 (mid), 850–950 (premium)	Bag-dependent	Goose for compressibility	FP, fill weight, comfort/limit rating

Outside bedding, the warmth-to-weight equation behaves differently because compression and packed volume become primary specs. The general principle — choose the fill power and fill weight that fits the use case, not the species — applies across all four product classes.

How to Read a Down Label: ASTM D4522, IDFB, Fill Weight, Fill Power, Down/Feather Ratio

A complete down label, compliant with ASTM D4522 and IDFB rules, contains four fields: species, down/feather ratio, fill power, and fill weight. The four together describe the product; any one of them in isolation is incomplete information.

Species: “white goose down,” “duck down,” “white duck down” — the species and color
Down/feather ratio: “90% down / 10% feather,” “75% down / 25% feather” — minimum 75% down to use the “down” label
Fill power: “700 fill power,” “800 FP” — cubic inches per ounce, ±5% tolerance per IDFB
Fill weight: “30 oz total fill,” “850 g fill” — total mass of fill in the product

A label reading only “premium goose down comforter” with no FP, no fill weight, and no down/feather ratio carries no measurable specification. The shell GSM and thread count round out the spec sheet; the shell weave structure affects how the down feels and how long it lasts almost as much as the fill itself.

Care and Cleaning: What the Standards Say

Down lasts 10–15+ years when laundered correctly. Three rules govern that lifespan.

Washing. Use a front-loading machine (no agitator), warm water (40°C / 100°F maximum to avoid protein damage), and a small amount of mild down-specific detergent. Skip chlorine bleach, optical brighteners, and fabric softener — softeners coat the cluster barbules and permanently reduce loft. ISO 6330 covers domestic-laundering procedures for dimensional-stability testing; comforter manufacturers typically specify cold-or-warm wash with extra rinse cycles to clear detergent residue.

Drying. Tumble dry on low heat for 3–6 hours; add 2–3 clean tennis balls or wool dryer balls to break up clumped clusters and restore loft. The comforter must be fully dry before storage — residual moisture leads to mildew and protein breakdown.

Frequency. Professional cleaning every 2–3 years for daily-use bedding is typical industry guidance, with a duvet cover used between cleanings to absorb body oils and skin cells. Dust-mite control benefits from periodic hot-tumble cycling (30 minutes on high) even without a full wash.

Common Claims Reviewed

Five claims appear repeatedly across competitor pages. Each is either incorrect or oversimplified.

“Higher fill power = warmer comforter.” Incomplete. Total warmth ≈ fill power × fill weight. A 700-FP, 30-oz comforter (21,000 in³) outperforms an 800-FP, 22-oz comforter (17,600 in³) for in-bed warmth, despite the lower FP.
“Goose down is the only luxury down.” False. Eider down (Somateria mollissima, hand-collected) reaches 1,000–1,200 FP — higher than any commercial goose down — and is a duck-family species.
“Ducks eat meat, so duck down smells gamier.” Folk-causation. Both species are opportunistic omnivores. Odor is controlled by washing quality, measured by IDFL oxygen number and turbidity; properly washed duck and goose both run odorless.
“DWR coating reduces odor.” Category error. Durable water-repellent treatments (DownTek, Nikwax Hydrophobic Down) reduce water uptake and slow loft loss in damp environments; they do not address odor, which is controlled in the wash stage.
“Higher fill power leaves less room for dust.” Physically backwards. Higher FP means more air volume per ounce, not less space. Dust-mite mitigation depends on shell weave tightness and cleaning frequency, not fill power.

Methodology Note

Fill-power ranges follow the IDFB steam-conditioning protocol; cluster-diameter ranges are summarized from retailer technical references; pricing is reported industry data and shifts seasonally. Full sourcing at methodology.

Sources

Standards

ASTM D4522-24. Standard Performance Specification for Feather and Down Fillings for Textile Products. ASTM International, 2024 (current edition, replacing D4522-14 withdrawn in 2023). astm.org/d4522-24
IDFB (International Down and Feather Bureau). Testing Regulations, v. June 2024, including the steam-conditioning fill-power method, oxygen-number, and turbidity tests. idfb.net/trade-resources
IDFL (International Down and Feather Testing Laboratory). “Explanation of Down and Feather Tests”; “Cleanliness of Down and Feather Products”; “Evaluation of Fill Power Conditioning Methods”; “USA-2000 Labeling Standards.” idfl.com
ISO 6330. Textiles — Domestic Washing and Drying Procedures for Textile Testing. iso.org/standard/63696
Federal Trade Commission. Textile Fiber Products Identification Act. 16 CFR Part 303. ftc.gov

Certifications

Textile Exchange. Responsible Down Standard (RDS) 3.0. Effective July 1, 2019 (most recent revision). The Materials Matter Standard (final criteria published December 2025; effective December 31, 2026) excludes down in v1; RDS remains the active welfare standard for down through the transition window. textileexchange.org/responsible-down-standard
NSF International. Global Traceable Down Standard (Global TDS). nsf.org
Downpass e.V. Downpass Standard. downpass.com

Reference texts and primary publications

Morton, W. E. & Hearle, J. W. S. (2008). Physical Properties of Textile Fibres, 4th ed. Woodhead Publishing in association with The Textile Institute, Cambridge. (General reference for natural protein fibre structure; cluster-morphology specifics in this article are drawn from industry sources rather than this volume.)
Duvetnor / Société Duvetnor (2008). Eiderdown: Characteristics and Harvesting Procedures. Canadian Wildlife Service partner publication.

Brand and retailer technical sheets

Au Lit Fine Linens. “Dissecting Down” technical reference page. aulitfinelinens.com
St Genève. Lajord Canadian White Goose Down (850 FP, Hutterite Colony, Lajord, Saskatchewan). stgeneve.com/lajord-canadian-white-goose-down
YumeRest. “Duck Down vs Goose Down” — raw-material per-ounce pricing reference. yumerest.com

This article does not provide medical advice. “Hypoallergenic” claims are discussed in the context of IDFB industry thresholds and FDA non-regulation, not as health recommendations. For background on how this site sources data and flags estimates, see methodology or read more comparisons in the bedding section.