Official data Source: US Census Bureau international trade data Data through August 2026 · updated monthly

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Heat exchange units, industrial type

In short

  • The US imported $2.15B of this product over the 12 months to August 2026, up 0.6% on the year before.
  • Mexico is the largest supplier, with 18.2% of US imports; China is next, with 11.9%.
  • Japan is the cheapest main supplier before and after freight and duty, landing at $55.09 each.
  • Duty paid averaged 15.5% of the value of imports in August 2026, down 6.6 points on a year earlier.
  • Taiwan is gaining share: 6.8% over the last 12 months, up from 2.5%.
  • 5 Federal Register notices named this product's tariff codes in the last 12 months.

US imports, Aug 2026

$212.6M

↑ +25% vs Aug 2025

Last 12 months

$2.15B

↑ +0.6% vs the 12 months before

Average duty paid

15.5%

↓ −6.6 pts vs Aug 2025

Top supplier

Mexico

18.2% 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.

Aug2025SepOctNovDecJan2026FebMarAprMayJunJulAugKorea, South ↑Duty ↓Germany ↓
Show the numbers
MonthUS imports
August 2025$170.3M
September 2025$148.0M
October 2025$184.5M
November 2025$130.6M
December 2025$166.5M
January 2026$184.0M
February 2026$146.1M
March 2026$182.9M
April 2026$185.7M
May 2026$185.1M
June 2026$223.5M
July 2026$201.9M
August 2026$212.6M

What changed

  • US imports were $212.6M in August 2026, up 5.3% from July 2026 and up 25% from August 2025.
  • Over the 12 months to August 2026 they totalled $2.15B, up 0.6% on the 12 months before.
  • Biggest moves in market share since July 2026: Canada up from 5.6% to 10.5%, Korea, South down from 5.1% to 1.1%.
  • Average price from China rose 23% since July 2026, to $106.04 each.
  • Duty paid on imports from Sweden rose from 17.0% to 26.2% of their value since July 2026.
  • Duty paid on imports from Canada fell from 10.7% to 6.1% of their value since July 2026.

US trade by year

US imports were $2.15B in the 12 months to Aug 2026, up 76% on the 12 months to Aug 2017. US exports were $1.93B, up 89%. In January 2022 the HS 2022 revision moved some goods between this code and 8524.11, 8524.12, 8524.19 and 10 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.

2017201820192020202120222023202420252026HS 2022China ↑China ↑Duty ↑
Show the numbers
PeriodUS imports
12 months to Aug 2017$1.22B
12 months to Aug 2018$1.34B
12 months to Aug 2019$1.36B
12 months to Aug 2020$1.20B
12 months to Aug 2021$1.17B
12 months to Aug 2022$1.34B
12 months to Aug 2023$1.67B
12 months to Aug 2024$1.93B
12 months to Aug 2025$2.14B
12 months to Aug 2026$2.15B
  • Mexico
  • United Kingdom
  • China
  • Canada
  • All countries
Share of US imports
Show the numbers
PeriodMexicoUnited KingdomChinaCanada
12 months to Aug 201711.7%5.6%11.6%8.4%
12 months to Aug 201811.6%5.7%19.0%7.0%
12 months to Aug 201917.4%7.5%11.5%6.9%
12 months to Aug 202024.0%5.6%9.6%8.3%
12 months to Aug 202118.9%5.0%12.2%8.0%
12 months to Aug 202216.6%5.8%13.8%9.1%
12 months to Aug 202315.9%5.1%12.5%8.5%
12 months to Aug 202419.8%6.7%11.7%7.6%
12 months to Aug 202517.4%7.2%12.6%7.4%
12 months to Aug 202616.5%9.4%8.9%7.7%
Duty paid, % of value
Show the numbers
PeriodMexicoUnited KingdomChinaCanadaAll countries
12 months to Aug 20170.1%0.6%0.5%0.1%0.3%
12 months to Aug 20180.1%0.3%2.8%0.0%0.7%
12 months to Aug 20190.1%0.3%17.1%0.1%2.1%
12 months to Aug 20200.2%0.5%13.1%0.1%1.5%
12 months to Aug 20210.1%0.6%24.9%0.1%3.3%
12 months to Aug 20220.1%0.7%25.0%0.5%3.8%
12 months to Aug 20230.2%0.6%25.7%0.6%3.7%
12 months to Aug 20240.2%0.4%25.4%0.3%3.3%
12 months to Aug 20255.2%5.0%41.9%2.3%9.6%
12 months to Aug 20269.2%5.2%53.3%7.4%17.4%
PeriodUS importsDuty paidUS exports
12 months to Aug 2026$2.15B+0.6%17.4%+7.8 pts$1.93B+9.9%
12 months to Aug 2025$2.14B+11%9.6%+6.3 pts$1.75B+8.0%
12 months to Aug 2024$1.93B+15%3.3%−0.5 pts$1.63B+14%
12 months to Aug 2023$1.67B+25%3.7%−0.1 pts$1.42B+17%
12 months to Aug 2022HS 2022 revision$1.34B+14%3.8%+0.5 pts$1.22B+24%
12 months to Aug 2021$1.17B−2.6%3.3%+1.8 pts$980.6M−9.8%
12 months to Aug 2020$1.20B−11%1.5%−0.6 pts$1.09B−6.8%
12 months to Aug 2019$1.36B+1.5%2.1%+1.4 pts$1.17B+13%
12 months to Aug 2018$1.34B+9.5%0.7%+0.5 pts$1.03B+1.5%
12 months to Aug 2017$1.22B0.3%$1.02B

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.

CountryUS importsShareAverage priceDuty paidLast 13 months
Mexico$38.7M18.2%0.0 pts$180.69 each+66%8.5%−3.7 pts
China$25.3M11.9%−1.3 pts$106.04 each+59%45.8%−20.9 pts
Germany$22.7M10.7%+3.7 pts$536.63 each−48%12.7%−13.0 pts
Canada$22.3M10.5%+6.7 pts$424.98 each−70%6.1%−1.6 pts
Taiwan$14.1M6.6%+2.6 pts$1,628 each+189%6.0%−8.2 pts
United Kingdom$13.9M6.5%−1.9 pts$4,400 each+34%3.0%−2.3 pts
Japan$11.1M5.2%−1.7 pts$49.93 each−7.5%8.2%−17.4 pts
India$9.4M4.4%−0.5 pts$529.69 each+23%13.3%−2.5 pts
Other countries (49)$55.2M25.9%−7.6 pts$175.39 each−13%17.4%+1.2 pts
All countries$212.6M100.0%$183.46 each+28%15.5%−6.6 pts

The 3 largest suppliers had 34.8% 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
CountryPriceFreight and insuranceDutyLanded costMake-up
Japan$49.19 each$1.70 each3.5% of price$4.20 each8.5% of price$55.09 each−6.9%
Korea, South$125.44 each$4.15 each3.3% of price$13.59 each10.8% of price$143.18 each+16%
China$98.10 each$5.61 each5.7% of price$43.37 each44.2% of price$147.08 each+7.3%
Mexico$176.38 each$0.76 each0.4% of price$18.08 each10.3% of price$195.22 each+55%
Canada$440.48 each$2.71 each0.6% of price$35.24 each8.0% of price$478.43 each−64%
Germany$528.89 each$22.91 each4.3% of price$71.63 each13.5% of price$623.42 each−39%
Taiwan$2,535 each$268.32 each10.6% of price$156.93 each6.2% of price$2,961 each+288%
United Kingdom$4,961 each$66.68 each1.3% of price$204.18 each4.1% of price$5,232 each+1.9%
All countries$210.14 each$8.71 each4.1% of price$31.25 each14.9% of price$250.10 each+28%

Landed at a US port, Japan was cheapest, at $55.09 each: 61.5% below Korea, South.

Landed cost from Taiwan rose 288% on a year earlier, to $2,961 each, mostly on price: $623.10 each then, $2,535 each now.

How the market is shifting

Taiwan gained the most share: 6.8% of US imports over the last 12 months, up from 2.5% in the 12 months before. Korea, South lost the most: 4.3%, down from 9.4%. 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.

  • Mexico
  • United Kingdom
  • China
  • Canada
  • All countries
Share of US imports
Show the numbers
MonthMexicoUnited KingdomChinaCanada
September 202418.7%6.7%11.9%9.5%
October 202418.7%6.6%12.9%10.9%
November 202417.3%8.3%10.8%14.6%
December 202416.3%6.8%10.5%6.7%
January 202517.1%6.9%13.9%5.8%
February 202517.2%5.5%12.4%4.5%
March 202519.6%8.7%20.9%5.5%
April 202518.5%6.4%11.1%6.2%
May 202515.0%5.0%12.2%6.4%
June 202517.6%6.2%8.0%8.5%
July 202515.1%10.8%12.6%6.0%
August 202518.2%8.4%13.2%3.8%
September 202517.9%8.9%11.6%6.3%
October 202513.0%11.0%9.6%4.2%
November 202518.7%9.6%9.8%7.4%
December 202515.0%16.8%8.5%7.5%
January 202614.5%5.5%7.1%4.9%
February 202618.9%9.7%8.2%10.9%
March 202618.5%10.1%8.6%7.3%
April 202616.3%7.7%7.3%9.8%
May 202616.5%10.3%8.8%7.4%
June 202615.1%8.1%7.3%10.2%
July 202617.0%9.4%8.9%5.6%
August 202618.2%6.5%11.9%10.5%
Duty paid, % of value
Show the numbers
MonthMexicoUnited KingdomChinaCanadaAll countries
September 20240.2%0.3%25.8%0.0%3.4%
October 20240.2%0.3%25.7%0.1%3.9%
November 20240.2%0.3%25.8%0.1%3.2%
December 20240.2%0.2%24.6%0.0%2.6%
January 20250.2%0.2%25.0%0.0%3.7%
February 20250.2%0.5%22.9%0.2%3.2%
March 20257.5%1.2%32.9%2.0%8.2%
April 20259.7%9.7%53.7%4.5%11.9%
May 202510.6%9.5%68.4%3.3%16.6%
June 202511.3%16.2%64.1%6.4%16.1%
July 20259.0%13.3%73.7%7.7%19.9%
August 202512.2%5.3%66.6%7.7%22.1%
September 202514.1%5.9%71.8%7.0%24.5%
October 20259.8%6.1%74.5%8.9%19.0%
November 20257.9%3.7%60.2%6.0%22.7%
December 20259.0%7.6%60.5%10.6%22.0%
January 20268.1%5.5%56.7%8.7%18.6%
February 20266.4%4.6%49.9%5.2%17.0%
March 20264.8%3.0%48.5%6.9%13.1%
April 20269.3%7.9%47.6%5.9%16.0%
May 202610.2%4.4%43.7%7.5%16.5%
June 202611.4%5.8%42.4%7.8%14.6%
July 202611.1%3.4%43.7%10.7%14.5%
August 20268.5%3.0%45.8%6.1%15.5%

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.

  1. April 2026 · Duty paid: Germany 26.8% → 16.3%.
  2. January 2026 · Duty paid: China 66.0% → 49.4%, all countries 22.4% → 16.6%.
  3. September 2025 · Duty paid: Korea, South 3.9% → 16.4%.
  4. April–June 2025 · Duty paid: Mexico 0.2% → 10.1%, China 24.7% → 66.4%, Germany 6.9% → 22.9%, all countries 3.5% → 16.3%.
  5. November 2020 · Duty paid: China 14.0% → 25.3%.
  6. January 2019 · Duty paid: China 21.2% → 16.2%.
  7. August 2018 · Duty paid: China 1.3% → 20.4%.

Federal Register notices from the last 12 months that list this product's tariff codes. A notice can add a duty, exclude products from one or only mention them, so read each for what it changes. Search the Federal Register for 8419.50

Where it enters the US

Main ports of entry over the 12 months to August 2026: US imports and share.

  1. Houston, TX$205.2M · 9.5%
  2. Newark, NJ$178.8M · 8.3%
  3. Calexico-East, CA$162.3M · 7.5%
  4. Laredo, TX$154.4M · 7.2%
  5. Los Angeles, CA$132.8M · 6.2%

Where US exports go

US exports were $157.4M in August 2026, down 1.5% from August 2025, and $1.93B over the last 12 months, up 9.9% on the 12 months before. Fastest-growing market with 3% or more of US exports: Chile, up 785%.

MarketLast 12 monthsSharevs 12 months before
Canada$445.3M23.1%−2.2%
Mexico$288.1M14.9%+19%
Chile$112.1M5.8%+785%
Germany$107.7M5.6%+5.7%
Malaysia$84.4M4.4%+62%
China$82.9M4.3%−8.1%
United Kingdom$56.7M2.9%−21%
Singapore$53.0M2.7%+10%
Other countries (140)$698.6M36.2%+3.0%
All countries$1.93B100.0%+9.9%

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; 123 have reported 2025 so far. Where a country's figure for imports from the US is under half or over double what the US recorded exporting there that year, the US figure is shown under it.

MarketImportsvs year beforeFrom the USUS share
Germany$1.50Bin 2025+22%$191.2M12.7%
China$843.2Min 2025−20%$158.3M18.8%
United Kingdom$718.5Min 2025+23%$148.9MUS records $68.5M20.7%
Canada$599.3Min 2025+5.3%$375.8M62.7%
Japan$545.5Min 2025+19%$95.6MUS records $30.6M17.5%
France$543.8Min 2025+18%$58.0M10.7%
Mexico$536.2Min 2025+23%$201.0M37.5%
Italy$485.9Min 2025+16%$9.8MUS records $29.8M2.0%

The biggest market outside the US is Germany, which imported $1.50B of this product in 2025, 12.7% of that from the US.

Of these, imports into Mexico grew fastest: up 23% from 2024 to 2025.

Other products under heading 8419: machinery or equipment for the treatment of materials by a change of temperature; instantaneous or storage water heaters, nonelectric; parts thereof. US trade over the 12 months to August 2026.

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.
  • Tariff notices are from the Federal Register, matched to this product by the HTS numbers in their text.
  • Census revises recent months, so figures can change slightly. These are estimates for research and planning, not customs or legal advice.

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