Is a heat pump really efficient on the Black Sea?

Yes — in fact the region is one of the best in Turkey for heat pumps. Efficiency (COP) depends on outdoor temperature, and because Black Sea winters are mild, the unit runs at a high COP. That means low running costs.

What is COP and why does it stay high here?

COP is the heat produced per unit of electricity (COP 4 = 4×). COP drops as the air gets colder; but on the Black Sea coast, where it rarely falls below 0 °C, COP stays high all winter.

Do high humidity and rainfall harm a heat pump?

Not with the right choices. In the humid, rainy Black Sea climate, a corrosion-resistant outdoor unit, good drainage and an effective defrost function matter. An installation that attends to these details runs trouble-free for years.

Heat pump or gas boiler for the Black Sea?

Mild winters are exactly where a heat pump is strongest; it provides heating, cooling and hot water in one system, and combined with solar the cost drops to almost nothing. Where there's no gas infrastructure, a heat pump is a far more practical solution.

Is a heat pump suitable for my old/existing home?

In most cases, yes. Existing radiator or underfloor systems can be adapted to a heat pump. Insulation and plumbing are assessed during the survey; with the needed improvements, older homes also get efficient results.

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Do heat pumps make sense in the Black Sea climate?

July 8, 20267 min read

In humid, mild Black Sea cities like Ordu, Giresun and Samsun, is a heat pump truly efficient? Short answer: yes — and we explain why with climate data.

Many people on the Black Sea coast wonder whether a heat pump works well in a humid, rainy climate. In fact, the Black Sea climate is one of the most suitable regions in the country for heat pumps. Let's see why, with the climate data.

Mild winters are a heat pump's greatest strength

An air-source heat pump's efficiency (COP) falls as the outdoor temperature drops, and in very cold regions it can drop sharply. On the Black Sea coast, however, temperatures rarely fall below 0 °C (coastal snow is minimal in Giresun and Ordu). This mild winter profile means the unit runs at a high COP all winter — so heating costs stay low.

Chart of heat pump COP efficiency versus outdoor temperature with the Black Sea winter high-efficiency zone — RCS Mühendislik — COP falls as the outdoor temperature drops; in the Black Sea's mild winters a heat pump stays highly efficient (illustrative chart).

What to watch for with humidity and rainfall

The region's defining traits are high humidity and heavy rainfall; annual rainfall reaches 1300 mm in Giresun, while the sea and reservoir lakes raise humidity in Samsun. So a corrosion-resistant outdoor unit, proper drainage and an effective defrost function matter. A well-chosen, well-placed system runs reliably and lasts even in a humid climate.

Advantages over gas and combi boilers

Heating, cooling and hot water in one system
Several times more heat than the electricity used: high efficiency, low bills
Low carbon emissions, eco-friendly operation
Compatible with underfloor heating, radiators and fan coils

Which heat pump to choose?

Models using the eco-friendly R290 refrigerant combine high efficiency with low environmental impact, making them a good option for the Black Sea climate. You can review the model below:

Province	Jan. avg. temp.	Snow
Ordu	~7 °C	Rare on coast
Samsun	~5 °C	Rare
Giresun	~7 °C	Rare on coast

Approximate January averages on the Black Sea coast. Because temperatures rarely fall below 0 °C, a heat pump runs at high efficiency all winter.

Alarko Flair R290 Heat Pump

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Based in Ordu, RCS Mühendislik provides heat pump survey, installation and maintenance in Ordu, Giresun and Samsun. Contact us to specify the right system for your area.

Frequently asked questions

Is a heat pump really efficient on the Black Sea?: Yes — in fact the region is one of the best in Turkey for heat pumps. Efficiency (COP) depends on outdoor temperature, and because Black Sea winters are mild, the unit runs at a high COP. That means low running costs.
What is COP and why does it stay high here?: COP is the heat produced per unit of electricity (COP 4 = 4×). COP drops as the air gets colder; but on the Black Sea coast, where it rarely falls below 0 °C, COP stays high all winter.
Do high humidity and rainfall harm a heat pump?: Not with the right choices. In the humid, rainy Black Sea climate, a corrosion-resistant outdoor unit, good drainage and an effective defrost function matter. An installation that attends to these details runs trouble-free for years.
Heat pump or gas boiler for the Black Sea?: Mild winters are exactly where a heat pump is strongest; it provides heating, cooling and hot water in one system, and combined with solar the cost drops to almost nothing. Where there's no gas infrastructure, a heat pump is a far more practical solution.
Is a heat pump suitable for my old/existing home?: In most cases, yes. Existing radiator or underfloor systems can be adapted to a heat pump. Insulation and plumbing are assessed during the survey; with the needed improvements, older homes also get efficient results.