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Karnot Engineering Blog

Practical guides, technical deep-dives, and energy efficiency insights for engineers, facility managers, and energy auditors.

Energy Efficiency

Heating Hot Water With a Steam Boiler Is a Terrible Waste of Energy

A steam boiler is the most expensive way to make 70 °C water. Adding a Karnot iHEAT R290 heat pump preheater cuts diesel use by 25% and pays back in under 18 months. Free calculator and Sankey tool inside.

4 May 2026 10 min read Boiler Retrofit
Engineering Guide

Pinch Analysis Made Simple: Where Heat Pumps Save the Most

No jargon. No PhD required. Learn how pinch analysis finds the exact minimum heating and cooling your process needs — and where a Karnot Heat Pump saves the most money.

2 April 2026 12 min read Process Integration
Energy Efficiency

Your Steam Boiler Is Not 80% Efficient — The Real Number Might Shock You

Philippine factories are losing millions of pesos in hidden steam losses. Here is exactly where your energy goes — and what modern heat pump technology does instead.

3 April 2026 10 min read Steam Systems
Cold Chain

Your Cold Store Is Burning 25-35% of Revenue on Electricity

Three hidden problems — defrost waste, refrigerant leaks, and non-condensable gases — are costing Philippine cold stores millions of pesos. Here is where the money goes.

4 April 2026 12 min read Cold Chain
Industrial Decarbonisation

Your Boiler Is Burning Money: CO2 Heat Pumps + MVR Cut Steam Costs 90%

Combining Karnot iHEAT CO2 heat pumps with Piller MVR turbo-compressors replaces fuel-fired boilers entirely — system COP of 10-15+ on electricity alone.

4 April 2026 14 min read Steam Electrification
Energy Efficiency

Your Hot Water System Is Costing You 4x Too Much

Philippine hotels, hospitals, and food factories are paying ₱12-16 per kWh of hot water. A heat pump delivers the same kWh for ₱2.50-3.00. Here are the numbers.

5 April 2026 12 min read Energy Efficiency
Industrial Climate

The humidity excursion you didn't see. The product you can no longer ship.

Standard split AC physically cannot hold a tropical warehouse at 22°C / 60% RH. The SHR mismatch story, the post-harvest loss it causes across tobacco / food / grain storage, and the AHU + iSTOR + R290 + solar architecture that fixes it.

10 May 2026 10 min read Industrial Climate Control
Hotel Energy

You already have heat pumps. The gas inside is the problem.

R410A is on a phasedown clock under DENR DAO 2021-31. Salt air is destroying coastal coils. BOI incentives may apply. Here's the case for R290 replacement now, on capex.

10 May 2026 8 min read Hotel Energy
Hotel Energy

The 10°C Penalty: Why Philippine Hotels Are Bleeding OPEX on Hot Water

Legacy heat pumps top out at 55°C. Legionella safety requires 65°C. That gap costs hundreds of thousands of pesos per year in electric backup.

5 April 2026 14 min read Hotel Energy
Energy Strategy

Breaking the Energy Trilemma: How the Philippines Can Secure Its Energy Future

S&P, ADB, and the World Bank have all downgraded the Philippines. The energy trilemma is breaking apart. Here is how natural refrigerant technology can rebuild it.

11 April 2026 12 min read Energy Strategy
Energy Crisis

PHP 170 Per Litre Diesel: What the Energy Emergency Means for Your Business

EO 110 declared a national energy emergency. Diesel heading to ₱170/L. Here is what facility managers and business owners need to do now.

5 April 2026 10 min read Energy Crisis

More articles coming soon

Guides on Scope 1/2/3 emissions, SEC PFRS S2 compliance, solar+heat pump integration, and more.