It’s rather apt that one meets veteran entrepreneur Deepak Pahwa on a day when Delhi’s air quality is particularly bad. His Pahwa group of companies, which include the over 60-year-old Bry-Air, Desiccant Rotors International (DRI), DelAir and Technical Drying Services (TDS), are in the business of hi-tech air treatment and environmental control. “There’s a lot of discourse around air quality now, but not so much about indoor air quality,” says Pahwa, pointing out that it has a direct bearing on productivity.
His companies are also into energy recovery and energy savings, particularly important areas in these volatile times, when the world is exceedingly conscious about energy consumption. The products from the group cater to sectors ranging from pharmaceuticals to advanced battery manufacturing.
Pahwa animatedly talks about the latest launch from Bry-Air — a dehumidifier specially developed for the pharma industry, which uses metal organic frameworks (MOF) technology. The Nobel Prize for chemistry in 2025, he points out, was won by three scientists for MOF, which are porous materials that can trap carbon dioxide. “We had been working on this technology for 13 years and we just launched our first product incorporating MOF,” says Pahwa, explaining how, for 35 years, the world has relied on silica gel as a desiccant for dehumidification. “With MOF technology you are saving 60 per cent energy, which is a giant leap, and our product has big applications in pharmaceutical and food factories,” says Pahwa.
Bry-Air’s water maker
It was pure chance that Pahwa, an electrical engineer from BHU, got into the niche of environmental control products. “It’s not with a vision that we got here… but, one way or other, throughout our journey, our innovations and technology development have somehow been focused on energy saving devices. We didn’t add those labels, but in the last 15 years we found the world’s attention on it, as sustainability became a buzzword,” he says. This explains why the group is in a good space now, and its products are found everywhere in the world, from China to North America and West Asia to Latin America. “We are not so active as a group in Europe and Japan, other than that we are active everywhere around the globe,” says Pahwa.
The origins
The flagship company of the Pahwa group is Bry-Air, which has an interesting history. It was founded in 1964 by Art Harms, a former sales representative at Bryant, a division of Carrier Corporation. Harms founded Bry-Air as an offshoot of Bryant after Carrier decided to exit the dehumidification business. In 1981, Harms’ family entered into a joint venture with Pahwa to form Bry-Air Asia. “In 1999, they decided to cash out of the JV and thus we acquired the name for Asia,” says Pahwa.
But then in 2006, there was a management takeover of Bry-Air USA. “We part-funded that takeover,” says Pahwa, “and, in the process, we acquired the global name and licensed its use back to the person who bought it, with the provision and restriction that he could only use it in North America.” Last December, there was a sunset to the agreement, and now the Bry-Air business is wholly with the Pahwa group.
“We have an organisation which is very innovation driven,” says Pahwa, describing how the company has filed over 130 patents (80 granted) for adsorbent and dehumidification technologies. An innovation he is betting big on is a unit (Taaza water) that can generate water from air — moisture from air is captured, its quantity enhanced and then condensed. “We expect a pretty interesting future for it in this water-stressed world,” he says. At the moment, the units, which can produce 60 litres of water a day, are being distributed through NGOs to various small locations. Each unit is priced at ₹1.5 lakh. “We are working on larger systems designed to produce 1,000 litres an hour,” he says.
Which is the group’s hero product? “We have three products which have given us extensive recognition. One is our desiccant dehumidifiers. The second product is our energy recovery wheels. It rotates and transfers the energy. And the third product is a wheel, too — that is in the heart of every dehumidifier. In fact, the best of companies that make dehumidifiers in China buy the wheel from us in India — the core or gut is going from us,” he says.
There’s also the energy recovery devices, made by DRI, which help maintain sufficient fresh air in occupied spaces without a punishing air-conditioning load, he says. “We recover the energy from exhaust air, which is stale. And we bring in fresh air, which is treated. And the energy is transferred from one to the other. Almost every airport in West Asia uses our devices. During the Beijing Olympics, China used it extensively,” he adds.
Climate tech
Clocking revenues of around ₹1,000 crore, the group, with 1,900 employees, is working on futuristic technologies, Pahwa says. “Global warming has led to opportunities, as drastic measures are needed to reduce the carbon content in the atmosphere. People are scrambling to develop technologies for removal of carbon dioxide. Today, we are also working on very advanced levels of carbon dioxide capture technologies,” he says.
These climate mitigating technologies, he says, have applications in industries like cement factories, which emit a lot of carbon. “But we don’t want to get into the front end of that rat race — there are many start-ups there with sustainability funds investing in them. We are working on the core or the heart of what they will need.”
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Published on March 16, 2026
