Company history

Miura began in December 1927 as Miura Seisakusho, a workshop in Matsuyama on the island of Shikoku that built and sold barley- and rice-milling machines. It was a provincial manufacturer of the ordinary kind: a handful of hands, a local market, and a trade — repairing and selling milling machines — that ran on Japan’s most basic need for three decades, through the war and the food shortages that followed it.

For thirty-one years it stayed an unincorporated business. Only in May 1959, with capital of $5,556 (¥2m), was it registered as Miura Seisakusho Co., Ltd., with Miura Tamotsu as president — the legal entity from which today’s Miura descends. By then the postwar scarcity that had sustained the milling trade was ending, and rice-milling equipment was a business with no future to speak of. The company had incorporated just in time to need a different product.

In October 1960, seventeen months after incorporating, Miura stopped making milling machines and began building small once-through boilers. In a market where the fire-tube “round boiler” was the standard, the once-through type was regarded as an oddity — fussy to run, and outside what serious makers bothered with. That was exactly the opening. Its awkwardness was the reverse side of two real advantages: it took a fraction of the floor space and it raised steam in minutes rather than hours. A niche the large manufacturers would not enter in earnest was a niche where a tiny Matsuyama works could compete on price and performance. The slogan Miura adopted — build the world’s cheapest good boiler — became the company creed.

The bet was that persistence, not novelty, would decide it. Speaking in 1983, Miura Tamotsu noted that others had reached the small once-through boiler before him, but that “they gave up along the way, or switched to another kind of boiler” — leaving Miura, after more than twenty years of working on nothing else, alone in the field. Thermal efficiency that had started at 60–70% was by then guaranteed at 90%. Meanwhile the company built the sales network its product needed: Tokyo in 1963, Nagoya and Osaka in 1966, marine auxiliary boilers from 1967. Within a decade a local boiler maker had become a national specialist.

Two structural moves closed the period. From 1972 Miura began charging for maintenance — heresy when after-sales service was assumed to be free — and built service depots across the country, a decision that would matter more than any product. And the corporate form was consolidated: a separate sales company, Miura Kogyo, was set up in 1970 and absorbed back into the manufacturer in 1978, at which point the combined firm took the name Miura Co., Ltd. Medical sterilizers, begun in 1978, opened the first line of diversification around the boiler. By 1981 the company had both a product and a shape.

Miura listed on the second section of the Osaka Stock Exchange in December 1982 and on the Tokyo Stock Exchange in December 1984 — fifty-five years after its founding, twenty-three after incorporation. In the same stretch it went overseas, and did so early for a company of its size: a Korean affiliate in 1982, a Canadian subsidiary in 1987, Taiwan in 1988, US sales companies in 1991, Shanghai in 1993. Selling a niche machine across borders was the only way to enlarge a niche.

The decisive move, though, was made at home. In February 1989 Miura launched online maintenance — remote monitoring of installed boilers — and with it completed the model the 1972 decision had begun. A boiler’s real performance is set after installation, by how it is run, by water treatment and chemicals; so the company that stays inside the boiler room keeps earning from it. Field engineers, later branded “heat sommeliers,” grew into a network of roughly 100 domestic depots and more than 1,200 engineers. Consumables and service smoothed the swings of new equipment orders. In October 1989 the shares moved up to the first sections in Tokyo and Osaka.

From there the business widened around the same core competence — combustion, water, heat. The Hojo plant, opened in 1991, was extended six times over eighteen years to house water treatment, food machinery, medical equipment and electrical products in turn; a research institute for combustion and water treatment followed in 1992. Manufacturing was added in Suzhou (2004), Georgia in the United States (2008) and Indonesia (2013), with a Singapore holding company for Southeast Asia. Consolidated sales rose from ¥74.5bn in the year to March 2012 to ¥85.5bn in the year to March 2014 — still carried, in the main, by domestic boilers and the service revenue attached to them.

The service model that made Miura unassailable in Japan was also the thing it could not export. A network of engineers within driving distance of every installed boiler takes decades to build; abroad, Miura had products but not the relationships. Through the 2010s it extended its map anyway — Thailand and the Netherlands in 2014, an Americas holding company and Turkey in 2015, Bangladesh in 2023 — while opening a fifth business line at home by acquiring the commercial laundry maker Inax Inamoto in 2017. Migration to the TSE Prime Market followed in 2022.

Then the company changed method. Rather than grow a foreign service network, it bought ones that already existed. In April 2023 Miura took 20% of Belgium’s JENSEN-GROUP and contributed 49% of its own laundry business into the partnership. In April 2024 it acquired the German boiler maker CERTUSS outright. In May 2024 it bought Cleaver-Brooks, one of North America’s largest industrial boiler makers, for about $766.3M (¥116bn) — timed to the succession from Miyauchi Daisuke to Yoneda Tsuyoshi as president that same spring. In October it took 49% of Daikin Applied Systems, adding air conditioning to a portfolio that already held compressors and laundry equipment.

The reasoning was that Japan’s boiler market had matured while America’s was widening — reshoring manufacturers, decarbonisation subsidies — and that acquiring an incumbent with its service organisation intact would let Miura carry its energy-efficiency selling into North America rather than rebuild it there. Consolidated sales for the year to March 2025 reached $1.7B (¥251bn), up 57.4%, with operating profit of ¥25.3bn and net profit of ¥23.3bn; the overseas share of revenue is planned to rise from roughly 26% toward half. What began as one man’s wager on an unfashionable boiler in a Matsuyama workshop is now a group selling industrial heat, water and air across three continents — with the open question of whether a business built on being present in the boiler room can be acquired rather than earned.