— field notes from the HVAC trade, for India
The Head On
Industry Blog.
Practical, jargon-free articles on heating, cooling, ventilation and air quality for Indian homes, offices, factories, hospitals, clean rooms, fabs and data centres. Written by the engineers who do the work.
FeaturedRight-Sizing Your AC for Indian Summers and Monsoon Humidity
An oversized AC short-cycles, dehumidifies poorly and inflates your power bill. Here is how cooling load should be sized for 45°C heatwaves and 90% monsoon humidity in India.
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Ventilation & DuctworkDuct Leakage: The Hidden Energy Drain in Commercial Buildings
Leaky ductwork can waste 20–30% of conditioned air before it ever reaches the occupied space. Here is how sealing and balancing recover that lost efficiency.
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Clean Room HVACISO 14644 Cleanroom HVAC: The Basics for Pharma and Biotech
Cleanroom HVAC is a different discipline — temperature, humidity, pressure cascade and particle count must hold within tight bands, 24/7. A practical primer on the fundamentals.
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Data Center SolutionsPrecision Cooling and PUE: Cutting Energy Cost in Indian Data Centres
A single hot-spot can trigger thermal throttling or shutdown. Here is how precision cooling, containment and redundancy protect uptime and lower PUE.
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Semiconductor SolutionsFab-Grade HVAC for India’s Semiconductor Push
Semiconductor manufacturing demands the most stringent HVAC on earth. A look at what fab-grade environments require as India scales up its semiconductor sector.
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Industrial VentilationIndustrial Ventilation for Worker Safety: Fume, Dust and Heat Control
Heat, fumes and dust don’t just hurt productivity — they’re a safety and compliance issue. A practical guide to source-capture ventilation for Indian factories.
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Indoor Air QualityTackling PM2.5 in Indian Offices: A Filtration Strategy That Works
Indian cities routinely rank among the world’s most polluted. Here is how to design office filtration that measurably cuts PM2.5 and CO₂ without wrecking your HVAC budget.
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AMC & MaintenanceWhy an AMC Beats Breakdown Repair (and Costs Less Over Time)
A breakdown-driven maintenance strategy costs more, fails more often, and always fails at the worst moment. Here is the case for planned maintenance.
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Heating & BoilersHeat Pump Water Heating for Indian Hotels and Hospitality
Hot water is one of the largest energy line items in a hotel. Heat pump water heating can cut that cost by two-thirds compared with electric or gas geysers.
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Commercial & Industrial HVACChiller Plant Retrofits That Pay Back in Indian Commercial Towers
An ageing chiller plant is a slow money leak. Here is how to evaluate a retrofit — and which upgrades typically pay back fastest in Indian commercial buildings.
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