Official data Source: US Census Bureau international trade data
Track this productCentral heating boilers
In short
- The US imported $281.4M of this product over the 12 months to August 2026, down 20% on the year before.
- Canada is the largest supplier, with 30.5% of US imports; Korea, South is next, with 26.5%.
- Japan is the cheapest main supplier before and after freight and duty, landing at $1,093 each.
- Duty paid averaged 24.9% of the value of imports in August 2026, up 15.7 points on a year earlier.
- Liechtenstein is gaining share: 8.4% over the last 12 months, up from 0.0%.
- US exports were $85.6M over the last 12 months; the largest market is Canada, with 89.0%.
US imports, Aug 2026
$23.0M
↑ +5.1% vs Aug 2025
Last 12 months
$281.4M
↓ −20% vs the 12 months before
Average duty paid
24.9%
↑ +15.7 pts vs Aug 2025
Top supplier
Canada
30.5% of US imports
US imports by month
The last 13 months, so the same month a year ago is on the left. August 2026 is highlighted. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
Show the numbers
| Month | US imports |
|---|---|
| August 2025 | $21.9M |
| September 2025 | $23.5M |
| October 2025 | $22.8M |
| November 2025 | $23.6M |
| December 2025 | $27.3M |
| January 2026 | $17.3M |
| February 2026 | $22.3M |
| March 2026 | $28.3M |
| April 2026 | $19.2M |
| May 2026 | $26.0M |
| June 2026 | $23.3M |
| July 2026 | $24.8M |
| August 2026 | $23.0M |
What changed
- US imports were $23.0M in August 2026, down 7.1% from July 2026 and up 5.1% from August 2025.
- Over the 12 months to August 2026 they totalled $281.4M, down 20% on the 12 months before.
- Biggest moves in market share since July 2026: Canada up from 22.0% to 30.5%, Netherlands down from 12.9% to 1.1%.
- Average price from Canada fell 32% since July 2026, to $954.74 each.
- Duty paid on imports from Netherlands fell from 22.5% to 16.8% of their value since July 2026.
US trade by year
US imports were $281.4M in the 12 months to Aug 2026, up 14% on the 12 months to Aug 2017. US exports were $85.6M, up 4.5%. In January 2022 the HS 2022 revision moved some goods between this code and 8549.21, 8549.29, 8549.31 and 3 more, so part of a change across the dashed line can be the revision. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
Show the numbers
| Period | US imports |
|---|---|
| 12 months to Aug 2017 | $247.0M |
| 12 months to Aug 2018 | $253.6M |
| 12 months to Aug 2019 | $267.3M |
| 12 months to Aug 2020 | $264.8M |
| 12 months to Aug 2021 | $304.8M |
| 12 months to Aug 2022 | $364.7M |
| 12 months to Aug 2023 | $339.8M |
| 12 months to Aug 2024 | $333.0M |
| 12 months to Aug 2025 | $349.7M |
| 12 months to Aug 2026 | $281.4M |
- Canada
- Korea, South
- Germany
- Liechtenstein
- All countries
Show the numbers
| Period | Canada | Korea, South | Germany | Liechtenstein |
|---|---|---|---|---|
| 12 months to Aug 2017 | 49.2% | 21.8% | 9.6% | 0.0% |
| 12 months to Aug 2018 | 42.7% | 22.7% | 13.7% | 0.0% |
| 12 months to Aug 2019 | 42.1% | 22.5% | 14.3% | 0.0% |
| 12 months to Aug 2020 | 38.0% | 23.9% | 10.6% | 1.3% |
| 12 months to Aug 2021 | 29.3% | 26.2% | 13.9% | 0.0% |
| 12 months to Aug 2022 | 27.9% | 29.5% | 13.1% | 0.0% |
| 12 months to Aug 2023 | 32.2% | 22.0% | 12.0% | 0.1% |
| 12 months to Aug 2024 | 36.5% | 25.9% | 11.6% | 0.0% |
| 12 months to Aug 2025 | 29.9% | 30.3% | 10.6% | 0.0% |
| 12 months to Aug 2026 | 29.6% | 27.9% | 10.8% | 8.4% |
Show the numbers
| Period | Canada | Korea, South | Germany | Liechtenstein | All countries |
|---|---|---|---|---|---|
| 12 months to Aug 2017 | 0.0% | 0.0% | 0.0% | n/a | 0.0% |
| 12 months to Aug 2018 | 0.0% | 0.0% | 0.0% | n/a | 0.0% |
| 12 months to Aug 2019 | 0.0% | 0.0% | 0.0% | n/a | 0.0% |
| 12 months to Aug 2020 | 0.0% | 0.0% | 0.0% | 0.0% | 0.3% |
| 12 months to Aug 2021 | 0.0% | 0.0% | 0.0% | 0.0% | 0.1% |
| 12 months to Aug 2022 | 0.0% | 0.0% | 0.0% | n/a | 0.2% |
| 12 months to Aug 2023 | 0.0% | 0.0% | 0.0% | 0.0% | 0.3% |
| 12 months to Aug 2024 | 0.0% | 0.0% | 0.0% | 0.0% | 0.3% |
| 12 months to Aug 2025 | 0.4% | 3.3% | 4.0% | 10.0% | 3.1% |
| 12 months to Aug 2026 | 12.7% | 20.9% | 23.7% | 16.7% | 19.9% |
| Period | US imports | Duty paid | US exports |
|---|---|---|---|
| 12 months to Aug 2026 | $281.4M−20% | 19.9%+16.8 pts | $85.6M−14% |
| 12 months to Aug 2025 | $349.7M+5.0% | 3.1%+2.8 pts | $99.9M+16% |
| 12 months to Aug 2024 | $333.0M−2.0% | 0.3%0.0 pts | $86.3M−0.2% |
| 12 months to Aug 2023 | $339.8M−6.8% | 0.3%+0.1 pts | $86.5M−23% |
| 12 months to Aug 2022HS 2022 revision | $364.7M+20% | 0.2%+0.1 pts | $112.1M−3.0% |
| 12 months to Aug 2021 | $304.8M+15% | 0.1%−0.1 pts | $115.6M+28% |
| 12 months to Aug 2020 | $264.8M−1.0% | 0.3%+0.3 pts | $90.2M−1.5% |
| 12 months to Aug 2019 | $267.3M+5.4% | 0.0%0.0 pts | $91.6M+2.7% |
| 12 months to Aug 2018 | $253.6M+2.7% | 0.0%0.0 pts | $89.2M+8.9% |
| 12 months to Aug 2017 | $247.0M | 0.0% | $81.9M |
Who supplies the US
August 2026. Small figures under each value are the change from August 2025. Landed cost by origin, below, adds freight and duty to the price.
| Country | US imports | Share | Average price | Duty paid | Last 13 months |
|---|---|---|---|---|---|
| Canada | $7.0M | 30.5%+6.5 pts | $954.74 each−74% | 23.7%+19.1 pts | |
| Korea, South | $6.1M | 26.5%−4.1 pts | $1,146 each+10% | 25.0%+21.6 pts | |
| Germany | $2.8M | 12.3%+1.8 pts | $1,650 each−25% | 26.7%+14.9 pts | |
| Japan | $2.6M | 11.3%+6.0 pts | $860.56 each+37% | 24.8%+7.7 pts | |
| Italy | $1.0M | 4.4%+1.8 pts | $732.09 each−68% | 25.0%+14.9 pts | |
| Turkey | $683K | 3.0%+0.9 pts | $8,333 each+0.6% | 25.0%+15.0 pts | |
| Switzerland | $627K | 2.7%−2.2 pts | $28,501 each+26% | 25.0%+5.8 pts | |
| China | $534K | 2.3%−2.2 pts | $8,343 each−22% | 32.4%−5.1 pts | |
| Other countries (8) | $1.6M | 7.0%−8.2 pts | $2,083 each+72% | 23.7%+12.6 pts | |
| All countries | $23.0M | 100.0% | $1,166 each−26% | 24.9%+15.7 pts |
The 3 largest suppliers had 68.3% of US imports over the last 12 months.
Landed cost by origin
What importers paid to land this product at a US port from each main supplier, June–August 2026: the price, freight and insurance to the first US port, and duty, per unit. Suppliers with 3% or more of these imports, cheapest landed first. Small figures under landed cost are the change from the same months a year earlier.
- Price
- Freight and insurance
- Duty
| Country | Price | Freight and insurance | Duty | Landed cost | Make-up |
|---|---|---|---|---|---|
| Japan | $863.67 each | $16.53 each1.9% of price | $212.91 each24.7% of price | $1,093 each+30% | |
| Netherlands | $925.52 each | $2.98 each0.3% of price | $186.67 each20.2% of price | $1,115 each−19% | |
| Korea, South | $1,183 each | $25.44 each2.2% of price | $295.69 each25.0% of price | $1,504 each+23% | |
| Canada | $1,219 each | $9.69 each0.8% of price | $285.06 each23.4% of price | $1,514 each−59% | |
| Germany | $1,673 each | $12.84 each0.8% of price | $428.73 each25.6% of price | $2,114 each−14% | |
| Italy | $1,858 each | $11.31 each0.6% of price | $464.69 each25.0% of price | $2,334 each+13% | |
| China | $8,233 each | $216.38 each2.6% of price | $2,675 each32.5% of price | $11,124 each+11% | |
| Liechtenstein | $28,553 each | $656.05 each2.3% of price | $7,138 each25.0% of price | $36,347 each | |
| All countries | $1,389 each | $18.61 each1.3% of price | $340.76 each24.5% of price | $1,749 each−2.4% |
Landed at a US port, Japan was cheapest, at $1,093 each: 2.0% below Netherlands.
Landed cost from Canada fell 59% on a year earlier, to $1,514 each, mostly on price: $3,593 each then, $1,219 each now.
How the market is shifting
Liechtenstein gained the most share: 8.4% of US imports over the last 12 months, up from 0.0% in the 12 months before. United Kingdom lost the most: 1.5%, down from 4.3%. The charts show September 2024 to August 2026 for the 4 largest suppliers over the last 12 months. Dotted lines mark lasting changes in duty paid, labelled with the supplier, or "Duty" when several moved; the tariff timeline lists each one with its notices.
- Canada
- Korea, South
- Germany
- Liechtenstein
- All countries
Show the numbers
| Month | Canada | Korea, South | Germany | Liechtenstein |
|---|---|---|---|---|
| September 2024 | 35.9% | 25.4% | 14.4% | 0.0% |
| October 2024 | 40.9% | 28.1% | 4.8% | 0.0% |
| November 2024 | 38.2% | 23.6% | 12.2% | 0.0% |
| December 2024 | 26.4% | 33.0% | 16.7% | 0.0% |
| January 2025 | 33.0% | 27.8% | 4.4% | 0.0% |
| February 2025 | 36.3% | 20.8% | 3.7% | 0.0% |
| March 2025 | 37.3% | 19.4% | 11.5% | 0.0% |
| April 2025 | 26.4% | 33.5% | 10.4% | 0.0% |
| May 2025 | 23.1% | 35.3% | 11.3% | 0.1% |
| June 2025 | 21.3% | 34.9% | 16.6% | 0.0% |
| July 2025 | 16.1% | 47.9% | 9.3% | 0.0% |
| August 2025 | 24.0% | 30.6% | 10.4% | 0.0% |
| September 2025 | 29.2% | 18.2% | 21.2% | 5.0% |
| October 2025 | 38.4% | 22.9% | 9.0% | 6.8% |
| November 2025 | 32.5% | 37.5% | 6.5% | 2.1% |
| December 2025 | 26.4% | 46.0% | 4.7% | 4.4% |
| January 2026 | 31.6% | 23.4% | 5.0% | 20.7% |
| February 2026 | 31.6% | 24.7% | 11.0% | 10.6% |
| March 2026 | 29.1% | 26.7% | 16.6% | 14.0% |
| April 2026 | 28.0% | 31.4% | 3.9% | 14.6% |
| May 2026 | 31.1% | 28.5% | 13.4% | 8.2% |
| June 2026 | 26.7% | 15.9% | 9.2% | 11.1% |
| July 2026 | 22.0% | 29.0% | 13.4% | 5.0% |
| August 2026 | 30.5% | 26.5% | 12.3% | 2.0% |
Show the numbers
| Month | Canada | Korea, South | Germany | Liechtenstein | All countries |
|---|---|---|---|---|---|
| September 2024 | 0.0% | 0.0% | 0.0% | n/a | 0.2% |
| October 2024 | 0.0% | 0.0% | 0.0% | n/a | 0.0% |
| November 2024 | 0.0% | 0.0% | 0.0% | n/a | 0.1% |
| December 2024 | 0.0% | 0.0% | 0.0% | n/a | 0.0% |
| January 2025 | 0.0% | 0.0% | 0.0% | n/a | 0.4% |
| February 2025 | 0.0% | 0.0% | 0.0% | n/a | 0.1% |
| March 2025 | 0.4% | 0.0% | 0.0% | n/a | 0.3% |
| April 2025 | 0.2% | 0.6% | 2.5% | n/a | 2.7% |
| May 2025 | 0.0% | 8.0% | 10.0% | 10.0% | 7.1% |
| June 2025 | 0.8% | 10.0% | 10.0% | n/a | 9.2% |
| July 2025 | 0.0% | 8.2% | 10.0% | n/a | 8.6% |
| August 2025 | 4.6% | 3.4% | 11.8% | n/a | 9.1% |
| September 2025 | 2.4% | 21.1% | 21.7% | 16.7% | 18.0% |
| October 2025 | 6.0% | 21.7% | 25.3% | 16.7% | 17.4% |
| November 2025 | 6.5% | 19.9% | 30.9% | 15.3% | 18.1% |
| December 2025 | 8.1% | 12.8% | 28.8% | 1.4% | 15.6% |
| January 2026 | 5.1% | 24.6% | 25.3% | 11.0% | 18.0% |
| February 2026 | 8.5% | 20.6% | 23.7% | 15.3% | 18.0% |
| March 2026 | 7.5% | 18.3% | 16.6% | 10.4% | 14.0% |
| April 2026 | 17.0% | 23.0% | 25.3% | 22.1% | 22.0% |
| May 2026 | 25.1% | 25.0% | 25.0% | 25.0% | 24.9% |
| June 2026 | 22.6% | 25.0% | 25.0% | 25.0% | 23.9% |
| July 2026 | 23.9% | 25.0% | 25.1% | 25.0% | 24.8% |
| August 2026 | 23.7% | 25.0% | 26.7% | 25.0% | 24.9% |
Tariff actions touching this product
When the duty paid on this product changed and stayed changed, for its main suppliers and all countries, newest first, with the Federal Register notices that named the product in the 3 months before. Rates are medians of the 4 months either side, less any usual seasonal swing. A change shows what happened to duty paid, not why; read each notice for what it did.
- April–May 2026 · Duty paid: Canada 8.0% → 23.8%, Korea, South 19.4% → 25.0%, all countries 16.8% → 24.3%.
- August–September 2025 · Duty paid: Canada 0.4% → 6.3%, Korea, South 8.1% → 20.5%, Germany 10.0% → 27.1%, all countries 7.8% → 17.7%.
- April 2025 · Duty paid: Korea, South 0.0% → 8.1%, Germany 0.0% → 10.0%.
Where it enters the US
Main ports of entry over the 12 months to August 2026: US imports and share.
Where US exports go
US exports were $8.9M in August 2026, down 6.3% from August 2025, and $85.6M over the last 12 months, down 14% on the 12 months before.
| Market | Last 12 months | Share | vs 12 months before |
|---|---|---|---|
| Canada | $76.2M | 89.0% | −11% |
| Korea, South | $2.6M | 3.0% | −45% |
| Israel | $2.2M | 2.6% | +29655% |
| Mexico | $2.0M | 2.3% | −8.0% |
| Poland | $640K | 0.7% | −41% |
| Dominican Republic | $308K | 0.4% | −74% |
| United Kingdom | $237K | 0.3% | −30% |
| China | $223K | 0.3% | +275% |
| Other countries (30) | $1.2M | 1.4% | −45% |
| All countries | $85.6M | 100.0% | −14% |
Markets abroad
Each country's own import figures for this product, from UN Comtrade: the 8 biggest importers outside the US in the latest year each has reported, what they bought from the US, and the change from the year before. Values usually include freight and insurance to the importer's border, so they run a little above US export figures. Countries report a year or more late; 116 have reported 2025 so far.
| Market | Imports | vs year before | From the US | US share |
|---|---|---|---|---|
| Germany | $645.4Min 2025 | +12% | $31K | 0.0% |
| United Kingdom | $364.3Min 2025 | +6.5% | $242K | 0.1% |
| Italy | $301.0Min 2025 | −3.9% | $87K | 0.0% |
| France | $234.0Min 2025 | +6.0% | $0 | 0.0% |
| Romania | $212.4Min 2025 | +18% | $0 | 0.0% |
| Belgium | $195.9Min 2025 | +19% | $867 | 0.0% |
| Poland | $185.8Min 2025 | −9.7% | $0 | 0.0% |
| Spain | $146.0Min 2025 | +4.0% | $0 | 0.0% |
The biggest market outside the US is Germany, which imported $645.4M of this product in 2025, under 0.1% of it from the US.
Of these, imports into Belgium grew fastest: up 19% from 2024 to 2025.
Related products
Other products under heading 8403: central heating boilers not elsewhere specified, including central heating hot water boilers, and parts thereof. US trade over the 12 months to August 2026.
| Product | US imports | US exports |
|---|---|---|
| Parts for central heating boilersHS 8403.90 | $117.3M | $24.8M |
About these figures
- Source: US Census Bureau international trade data, not seasonally adjusted, in US dollars. Retrieved November 3, 2026.
- US imports are general imports at customs value, which excludes freight and insurance. Exports are at free-alongside-ship value.
- Average price is customs value divided by quantity (number of items), across all of the product's 10-digit lines.
- Duty paid is the duty Census calculates on each country's imports for consumption, as a share of their value. It moves with tariff changes, exemptions and the mix of goods within the product.
- Landed cost adds Census's import charges (freight, insurance and other costs of bringing the goods to the first US port) and calculated duty to the customs value, per unit, across the product's 10-digit lines. It leaves out antidumping and countervailing duties, customs fees and transport inland. Prices are averages across the goods within the code, so a lower one can mean cheaper goods, not the same goods for less.
- Markets abroad are each country's imports as it reports them to UN Comtrade, in US dollars, usually including freight and insurance. Countries report a year or more late and in their own edition of the HS codes, so one still on an older edition is missing for codes that changed in 2022.
- Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.