Heat pump water heaters · Compare

Airwell TFHM-100H-04M25 vs ATLANTIC 234511

Water heating efficiency ηwh: Airwell TFHM-100H-04M25 111 %, ATLANTIC 234511 113 %. The ATLANTIC 234511 is better on 7 of 7 comparable points.

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Both models in detail

Who wins where

  • Airwell TFHM-100H-04M25
  • ATLANTIC 234511

Biggest differences

FactTFHM-100H-04M25234511
Indoor sound power54 dB(A)37 dB(A)
Outdoor sound power54 dB(A)43 dB(A)
Annual electricity use, warmer climate451 kWh383 kWh
ηwh, warmer climate114 %134 %
Annual electricity use, colder climate558 kWh508 kWh
ηwh, colder climate92 %101 %
All specifications ↓

Score per area = position (0–100) relative to all 450 models in this category; higher is better.

Technical specificationsAirwellTFHM-100H-04M25ATLANTIC234511
General
Load profileM1M2
Efficiency
Water heating efficiency ηwh111 %1113 %✓2
ηwh, colder climate92 %1101 %✓2
ηwh, warmer climate114 %1134 %✓2
Energy labelA+1A+2
Annual electricity use, colder climate558 kWh1508 kWh✓2
Annual electricity use, warmer climate451 kWh1383 kWh✓2
Noise
Indoor sound power54 dB(A)137 dB(A)✓2
Outdoor sound power54 dB(A)143 dB(A)✓2
Connectivity & smart
Smart controlYes1–

Frequently asked questions

Which is better: the Airwell TFHM-100H-04M25 or the ATLANTIC 234511?

Water heating efficiency ηwh: Airwell TFHM-100H-04M25 111 %, ATLANTIC 234511 113 %. The ATLANTIC 234511 is better on 7 of 7 comparable points.

What is the water heating efficiency ηwh of the Airwell TFHM-100H-04M25 and the ATLANTIC 234511?

Airwell TFHM-100H-04M25: 111 %. ATLANTIC 234511: 113 %.

Which is better on indoor sound power: the Airwell TFHM-100H-04M25 or the ATLANTIC 234511?

ATLANTIC 234511: 37 dB(A). Airwell TFHM-100H-04M25: 54 dB(A).

Which is better on outdoor sound power: the Airwell TFHM-100H-04M25 or the ATLANTIC 234511?

ATLANTIC 234511: 43 dB(A). Airwell TFHM-100H-04M25: 54 dB(A).

How we collect and check this data →

Sources

  1. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026
  2. European Product Registry for Energy Labelling (EPREL) – water heaters — Europese Commissie · accessed 13 Oct 2026