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SmartHeat aero nature 074

The SmartHeat aero nature 074 is an air-to-water heat pump with a SCOP of 4.58 (35 °C) and a sound power level of 64 dB(A). In Ireland a heat pump is exempt from planning permission if it stays below 43 dB(A) (or 5 dB(A) above background noise, if higher), measured at the nearest neighbouring inhabited dwelling. Free-standing, the indicative minimum distance is 4.5 m; against a wall 6.3 m.1,2

Last updated: Technical specificationsRules in Ireland⇄ Compare this model
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SCOP (35 °C)
4.582

Seasonal efficiency: how much heat you get per kWh of electricity across a heating season.

Outdoor unit sound power
64dB(A)2
Official source
Refrigerant
R2901
Official source
Type (source)
Air-to-water1
Official source
Rated output 35 °C
49kW2
Official source
IE

Rules in Ireland

Minimum distance to your neighbour

Planning and Development (Exempted Development) Regulations 2026 (S.I. No. 342 of 2026)3 · nearest neighbouring inhabited dwelling

Planning exemption: max 43 dB(A), or 5 dB(A) above background noise if higher≤ 43 dB(A) · normal operation
Free-standing4.5 m
Against wall6.3 m
In corner9 m

Indicative calculation (hemispherical, no barriers). Your installer must confirm the noise level at the nearest neighbouring dwelling.

SEAI Heat Pump System Grant

Check conditions

€14,5004Maximum for a house, incl. €2,000 boiler scrappage

Up to €14,500 for a house (€11,500 for an apartment), including a €2,000 boiler scrappage grant when an oil, gas, solid-fuel or storage-heater system is removed. Homes built before 2007 need a technical assessment (€200 grant) unless the BER shows a Heat Loss Indicator of 2.3 or less. Installation is charged at 9% VAT.5

  • The heat pump must be listed on SEAI's Home Appliance Register of Performance (HARP) and installed by an SEAI-registered contractor.
  • Home built and occupied before 2021, with an MPRN; grant approval before any work starts and a BER assessment afterwards.

Heat pumps: grants and rules in Ireland →

Technical specifications

General
Type (source)Air-to-water1
Compressors21
Capacity controlleistungsstufen1
Performance
Rated output 35 °C49 kW2
Rated output 55 °C54 kW2
Efficiency
SCOP (35 °C)4.582
SCOP (55 °C)3.832
Seasonal efficiency ηs 35 °C180 %2
Seasonal efficiency ηs 55 °C150 %2
Energy label 35 °CA+++2
Energy label 55 °CA+++2
COP A7/W355.341
COP A2/W354.731
COP A-7/W353.591
Noise
Outdoor unit sound power64 dB(A)2
Refrigerant
RefrigerantR2901
Refrigerant charge9 kg1
Electrical
Max. power input33.8 kW1
Connectivity & smart
SG ReadyYes1

How it ranks

SCOP (35 °C): better than 26% of comparable models in our database (Heat pumps · Air-to-water · ≥ 14 kW; n = 208).

Rank 152 of 209

Compared with every model on VersusIndex in the same group with a known value; equal values do not count as better. This says nothing about price, installation or reliability.

Variants

This model is registered in 2 combinations (for example with a different indoor unit or cylinder) with exactly the same performance. All figures on this page apply to each of these types. The part of the type number that differs is in bold; small differences (e.g. cylinder volume or anode) are listed after it:

  • aero nature 074
  • aero nature 074 R

Similar models

Other brands, same type and a comparable size.

How we collect and check this data →

Frequently asked questions

Do I need planning permission for the SmartHeat aero nature 074 in Ireland?

Not if it meets the exempted-development conditions (Planning and Development (Exempted Development) Regulations 2026 (S.I. No. 342 of 2026)): no more than 43 dB(A) at the nearest neighbouring inhabited dwelling, or 5 dB(A) above background noise if that is higher. With a sound power of 64 dB(A) that indicatively means 4.5 m free-standing, 6.3 m against a wall or 9.0 m in a corner. Ask your SEAI-registered installer to confirm.1,2

How much SEAI grant can you get for the SmartHeat aero nature 074?

Up to €14,500 with the SEAI Heat Pump System Grant, including €2,000 boiler scrappage when an oil, gas, solid-fuel or storage-heater system is removed (€11,500 for an apartment). The home must be built and occupied before 2021, the heat pump must be on SEAI's HARP register and you need grant approval before work starts.1,2

Which refrigerant does the SmartHeat aero nature 074 use?

The SmartHeat aero nature 074 uses R290.1,2

Sources

  1. List of eligible heat pumps (BEG) — Bundesamt für Wirtschaft und Ausfuhrkontrolle (BAFA) · accessed 27 Sept 2026
  2. European Product Registry for Energy Labelling (EPREL) – heat pumps — Europese Commissie · accessed 15 Oct 2026
  3. Planning and Development (Exempted Development) Regulations 2026 (S.I. No. 342 of 2026)
  4. Heat Pump System Grants — SEAI · accessed 4 Oct 2026
  5. Heat pump heating system (VAT) — Revenue · accessed 4 Oct 2026