You run the business.
We handle the energy.
Natural refrigerant heat pumps that cut your energy costs up to 75% — cleaner, quieter, and built for the future.
Energy should work harder, not cost more
Karnot designs heating and cooling systems around natural refrigerants — R290 and CO₂. No synthetic chemicals. No fuel dependency. Just efficient, reliable technology that saves money and protects the planet.
Hot water and process heat, without the fuel bill
The iHEAT range delivers domestic and commercial hot water using R290 natural refrigerant. Quiet, compact, and remarkably efficient in tropical and temperate climates alike.
- COP 4.0–5.0 — up to 75% less energy than electric heaters
- R290 natural refrigerant (GWP 3) — future-proof and PFAS-free
- 9.5 kW to 100 kW models for any scale
Cold chain you can rely on, naturally
iCOOL uses CO₂ (R744) — a natural, non-flammable refrigerant with a GWP of just 1. From cold storage warehouses to food processing lines, our systems keep things cold without warming the planet.
- CO₂ transcritical and subcritical systems
- -40 C to +15 C temperature range
- Designed for tropical and demanding environments
Our Product Families
Purpose-built systems for heating, cooling, storage, and efficiency
iHEAT
High-temperature CO₂ and R290 heat pumps delivering up to 75% energy savings for hot water and process heating
View iHEAT RangeiCOOL
CO₂ refrigeration systems providing sustainable, efficient cooling for commercial and industrial applications
View iCOOL RangeAquaHERO
All-in-one R290 heat pump water heaters — perfect for split systems and fast installations
View Water HeatersiMESH
Bolt-on adiabatic cooling retrofit — 20–30% efficiency boost with 21-week payback. The quickest win in HVAC
View iMESHiVOLT Solar
Complete solar + battery kits with optional heat pump integration. Energy independence from ₱278,000 installed
View iVOLT RangeWhy Businesses Choose Karnot
Designed for real-world conditions — our systems deliver where it matters most
Slash Energy Costs 75%
iHEAT R290 delivers hot water at a fraction of the cost of electric resistance heaters and diesel boilers.
Zero Upfront Cost (EaaS)
Energy as a Service model — we install and maintain everything. You just pay for cheaper, greener energy monthly.
COP 4.0–5.0 Efficiency
R290 heat pumps thrive in warm climates. Higher ambient temperatures mean higher efficiency and bigger savings.
No Fuel Dependency
Runs on grid electricity. No diesel procurement, storage, or price volatility. Works even better with solar panels.
PFAS-Free & Future-Proof
R290 and CO₂ are natural refrigerants — unaffected by ECHA phase-downs, carbon taxes, or PFAS regulations.
Local Service Teams
Karnot has installation and maintenance teams across the Philippines, UK, and North America providing local support.
Proven Across Industries
From hotels to farms, our systems deliver measurable results where it matters most
Frequently Asked Questions
How much can I save with a Karnot heat pump?
Most commercial customers save 60-75% on thermal energy costs compared to electric resistance heaters, diesel boilers, or LPG systems. Actual savings depend on your current energy source, usage volume, and local electricity rates. Use our savings calculator for a personalised estimate.
What is an R290 heat pump?
An R290 heat pump uses propane as a natural refrigerant to transfer heat from the air to water. R290 has a Global Warming Potential (GWP) of just 3 — over 700x lower than legacy HFC refrigerants — and achieves COP ratings of 4.0-5.0.
What are natural refrigerants?
Natural refrigerants include R290 (propane) and CO₂ (R744). They have near-zero global warming potential, are not affected by PFAS bans or HFC phase-downs, and deliver superior efficiency with COP ratings of 4.0-5.0.
What is the difference between R290 and CO₂ refrigerants?
R290 (propane) has a GWP of 3 and excels in heating applications with COP 4.0-5.0. CO₂ (R744) has a GWP of 1, is non-flammable, and is ideal for refrigeration and cooling down to -40°C. Both are natural, PFAS-free, and future-proof against regulatory changes.
Is R290 refrigerant safe?
Yes. R290 (propane) is classified as non-toxic with an A3 safety rating. Modern R290 heat pumps use very small refrigerant charges (under 1kg) in sealed outdoor units, meeting all international safety standards including IEC 60335-2-40.
What does COP mean?
COP stands for Coefficient of Performance. A COP of 4.0 means for every 1 kW of electricity consumed, the heat pump produces 4 kW of heat. Higher COP means greater efficiency and lower running costs. Karnot iHEAT systems achieve COP 4.0-5.0.
Does Karnot offer zero upfront cost installation?
Yes. Karnot offers an Energy as a Service (EaaS) model where we install and maintain the heat pump system at no upfront cost. You simply pay a lower monthly energy bill — typically 60-75% less than your current costs.
Where does Karnot operate?
Karnot Energy Solutions serves the Philippines and ASEAN, United Kingdom, United States, and Canada with localised support, pricing, and installation networks in each region.
Available Worldwide
Local support, pricing, and installation networks in every region we serve
Ready to make the switch?
Talk to our team about how natural refrigerant technology can cut your energy costs and future-proof your business.