Green Heating Solutions

Attendees, exhibitors & solutions

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Industry trends

Key trends shaping this market and its wider industry.

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Frequently asked

Glossary

1

Heat pump

A device that moves thermal energy from a source (outside air, soil or water) to a building's heating circuit using a refrigerant cycle; in Dutch the term is warmtepomp. At this fair it covers air-source, ground-source and water-source families in both monobloc and split designs.

2

Air-to-water heat pump

The dominant European retrofit category: outdoor unit extracts heat from ambient air and delivers it to a hydronic circuit feeding radiators, underfloor heating or a cylinder. Efficiency falls as outdoor temperature drops, so sizing and emitter upgrades matter.

3

Brine-to-water (ground-source) heat pump

A heat pump coupled to a borehole or horizontal ground collector, where soil temperature stays stable year-round. Higher upfront cost, higher seasonal efficiency, and typically needs a permit and sufficient outdoor space.

4

Hybrid heat pump

A system pairing a heat pump with a condensing boiler so the boiler covers cold peaks or hot water demand. Often used in Dutch terraced housing where full electrification or insulation upgrades are not yet feasible.

5

COP and SCOP

COP is the instantaneous efficiency ratio of heat output to electrical input at one operating point; SCOP is the seasonal average across a defined climate and load profile. Manufacturers quote SCOP at a specific climate bin, so compare like for like.

6

A2L refrigerant

Mildly flammable refrigerant class covering R32 and R290 (propane). A2L and A3 refrigerants change installation rules, room-volume limits, tooling and leak-detection requirements, so they drive much of the training agenda at heat pump fairs.

7

F-gas regulation

EU rules on fluorinated greenhouse gases that phase down HFC supply, set leak-check obligations and certification requirements for technicians. It pushes manufacturers toward lower-GWP refrigerants such as R32 and natural refrigerants such as propane.

8

EPBD (Energy Performance of Buildings Directive)

The EU framework behind national building energy rules: minimum performance standards, heat pump readiness, and boiler phase-out signals. In the Netherlands it feeds into energy labels and the path away from fossil-only heating.

9

ISDE subsidy

Dutch investment subsidy for sustainable energy (Investeringssubsidie duurzame energie en energiebesparing), commonly used by homeowners and some commercial buyers when installing a heat pump. Amounts and conditions change per round; check the RVO scheme documents for the current budget year.

10

Netcongestie (grid congestion)

Dutch grid capacity shortage that postpones or conditions new large electrical connections and can slow full-electric heat pump projects. It explains current interest in hybrid systems, controls that flatten peak load, and buffer or thermal storage strategies.

11

DHW (domestic hot water)

Domestic hot water. Heat pumps typically deliver DHW through a cylinder at 55-65 °C, which affects sizing, legionella cycles, standby losses and tariff optimisation.

12

WTW / heat recovery ventilation

Balanced ventilation with a heat exchanger that transfers heat from extract air to supply air (Dutch: warmteterugwinning). Often sold together with heat pumps and increasingly paired with CO2-driven demand control.

13

ATES (aquifer thermal energy storage)

Seasonal storage of cold and warm water in subsurface aquifers for large buildings and heat networks. Common in Dutch commercial projects; permits and groundwater planning are part of the specification.

14

Hydronic balancing

Setting flows across emitters and branches so each circuit receives its design flow at low pump setting. Poor balancing is a frequent cause of comfort complaints and low measured heat pump efficiency.

15

Energy label (NTA 8800)

The Dutch building performance label, calculated under the NTA 8800 standard. A better label supports financing, rental requirements and subsidy eligibility, and is a common talking point when installers compare heat pump packages.