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Heat pump water heaters · 395 models

Quietest heat pump water heaters (indoors, 2026)

395 models in our database meet this; below the first 25 in order.

Criteria:

  • Sorted by: Indoor sound power (lowest first)

A ranking based on manufacturer and register data, not a test: we have not measured the units ourselves, and price, installation and service are not included. The source of every value is on the product page.

The ranking

  1. ALDES B100_TFlow® Nano MP / B100_TFlow® Nano MP Connecté / B100 T.Flow® Nano UBA

    Indoor sound power 33 dB(A)

    • Indoor sound power 33 dB(A): the best of 395 models in this selection
    • Outdoor sound power 33 dB(A): the best of 241 models in this selection

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  2. ALDES B200_TFlow® Hygro+ MP / B200_TFlow® Hygro+ MP Connecté / B200 T.Flow® Hygro+ UBA

    Indoor sound power 34 dB(A)

    • Indoor sound power 34 dB(A): no. 2 of 395 models
    • Outdoor sound power 34 dB(A): no. 2 of 241 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  3. R-Aqua HPB 100

    Indoor sound power 35 dB(A)

    • Indoor sound power 35 dB(A): no. 3 of 395 models
    • Weaker point: Water heating efficiency ηwh 110 %: no. 407 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  4. R-Aqua HPB 300A

    Indoor sound power 35 dB(A)

    • Indoor sound power 35 dB(A): no. 3 of 395 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  5. ATLANTIC 234511
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    ATLANTIC 234511

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models
    • Weaker point: Water heating efficiency ηwh 113 %: no. 387 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  6. ATLANTIC 234512
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    ATLANTIC 234512

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  7. AUSTRIA EMAIL 964053

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models
    • Weaker point: Water heating efficiency ηwh 113 %: no. 387 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  8. Itho Daalderop WPU 6G 18-E M + 150L
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    Itho Daalderop WPU 6G 18-E M + 150L

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Water heating efficiency ηwh 154 %: no. 68 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  9. NONAME 964052

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models
    • Weaker point: Water heating efficiency ηwh 113 %: no. 387 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  10. THERMOR 296112
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    THERMOR 296112

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  11. Wertec W12-100

    Indoor sound power 37 dB(A)

    • Indoor sound power 37 dB(A): no. 5 of 395 models
    • Weaker point: Water heating efficiency ηwh 110 %: no. 407 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  12. Electranova YT-060GH

    Indoor sound power 38 dB(A)

    • Indoor sound power 38 dB(A): no. 12 of 395 models
    • Weaker point: Water heating efficiency ηwh 75 %: no. 448 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  13. HGB-Trading House Heating HH-060GV

    Indoor sound power 38 dB(A)

    • Indoor sound power 38 dB(A): no. 12 of 395 models
    • Weaker point: Water heating efficiency ηwh 75 %: no. 448 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  14. R-Aqua HPB 200A

    Indoor sound power 38 dB(A)

    • Indoor sound power 38 dB(A): no. 12 of 395 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  15. ATLANTIC 350201
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    ATLANTIC 350201

    Indoor sound power 40 dB(A)

    • Indoor sound power 40 dB(A): no. 15 of 395 models
    • Weaker point: Water heating efficiency ηwh 116 %: no. 364 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  16. ATLANTIC 350202
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    ATLANTIC 350202

    Indoor sound power 40 dB(A)

    • Indoor sound power 40 dB(A): no. 15 of 395 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  17. Migloor PAVH-15V4FBA

    Indoor sound power 40 dB(A)

    • Water heating efficiency ηwh 185 %: no. 14 of 450 models
    • Indoor sound power 40 dB(A): no. 15 of 395 models
    • Weaker point: Outdoor sound power 61 dB(A): no. 208 of 241 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  18. OUTES AAb21R1/200ES

    Indoor sound power 40 dB(A)

    • Indoor sound power 40 dB(A): no. 15 of 395 models
    • Water heating efficiency ηwh 145 %: no. 94 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  19. OUTES AAb21R1/300ES

    Indoor sound power 40 dB(A)

    • Indoor sound power 40 dB(A): no. 15 of 395 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  20. SOLIUS ECOTANK SILVER DUPLEX 500L C/ SERPENTINA - SWD500S

    Indoor sound power 40 dB(A)

    • Indoor sound power 40 dB(A): no. 15 of 395 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  21. CABEL 964055

    Indoor sound power 41 dB(A)

    • Indoor sound power 41 dB(A): no. 21 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models
    • Weaker point: Water heating efficiency ηwh 113 %: no. 387 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  22. CABEL 974053

    Indoor sound power 41 dB(A)

    • Indoor sound power 41 dB(A): no. 21 of 395 models
    • Outdoor sound power 43 dB(A): no. 14 of 241 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  23. Dimplex Edel 100 Air D893321
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    Dimplex Edel 100 Air D893321

    Indoor sound power 41 dB(A)

    • Indoor sound power 41 dB(A): no. 21 of 395 models
    • Weaker point: Water heating efficiency ηwh 99 %: no. 439 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  24. Itho Daalderop 03-00609 WPU 25COE-5G + 03-00549 WPV 200 2G

    Indoor sound power 41 dB(A)

    • Indoor sound power 41 dB(A): no. 21 of 395 models
    • Water heating efficiency ηwh 160 %: no. 61 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

  25. Sanistage DSW200W

    Indoor sound power 41 dB(A)

    • Indoor sound power 41 dB(A): no. 21 of 395 models
    • Water heating efficiency ηwh 166 %: no. 40 of 450 models

    Choose this model if the indoor unit goes in a bedroom, living room or another quiet space.

All figures at a glance

#Model1Indoor sound powerLoad profileWater heating efficiency ηwhEnergy labelOutdoor sound power
1ALDES B100_TFlow® Nano MP / B100_TFlow® Nano MP Connecté / B100 T.Flow® Nano UBA33 dB(A)M141 %A+33 dB(A)
2ALDES B200_TFlow® Hygro+ MP / B200_TFlow® Hygro+ MP Connecté / B200 T.Flow® Hygro+ UBA34 dB(A)M146 %A+34 dB(A)
3R-Aqua HPB 10035 dB(A)M110 %A+50 dB(A)
4R-Aqua HPB 300A35 dB(A)XL142 %A+50 dB(A)
5ATLANTIC 23451137 dB(A)M113 %A+43 dB(A)
6ATLANTIC 23451237 dB(A)L131 %A+43 dB(A)
7AUSTRIA EMAIL 96405337 dB(A)M113 %A+43 dB(A)
8Itho Daalderop WPU 6G 18-E M + 150L37 dB(A)L154 %A+–
9NONAME 96405237 dB(A)M113 %A+43 dB(A)
10THERMOR 29611237 dB(A)L131 %A+43 dB(A)
11Wertec W12-10037 dB(A)M110 %A+–
12Electranova YT-060GH38 dB(A)S75 %A+–
13HGB-Trading House Heating HH-060GV38 dB(A)S75 %A+–
14R-Aqua HPB 200A38 dB(A)L129 %A+53 dB(A)
15ATLANTIC 35020140 dB(A)M116 %A+52 dB(A)
16ATLANTIC 35020240 dB(A)L133 %A+52 dB(A)
17Migloor PAVH-15V4FBA40 dB(A)XL185 %A+61 dB(A)
18OUTES AAb21R1/200ES40 dB(A)L145 %A+–
19OUTES AAb21R1/300ES40 dB(A)XL137 %A+–
20SOLIUS ECOTANK SILVER DUPLEX 500L C/ SERPENTINA - SWD500S40 dB(A)XXL143 %A+–
21CABEL 96405541 dB(A)M113 %A+43 dB(A)
22CABEL 97405341 dB(A)L131 %A+43 dB(A)
23Dimplex Edel 100 Air D89332141 dB(A)M99 %A56 dB(A)
24Itho Daalderop 03-00609 WPU 25COE-5G + 03-00549 WPV 200 2G41 dB(A)XL160 %A+–
25Sanistage DSW200W41 dB(A)L166 %A+–

Compare all models →

How this ranking is made

This selection is put together automatically from the 395 models in our database that meet the criteria above. We only include models whose figures for the ranking are known: without those values a model cannot be compared fairly, so it drops out. The list is recalculated with every data update, so the order can change as soon as manufacturers or registers publish new values.

The order follows a single feature: Indoor sound power (lowest first). Where values are equal, the alphabetical order of brand and model decides. The other features are shown as extra columns in the table so you can see how a model does on other points; a model at the top for this one feature can be weaker elsewhere.

The reasoning for each place is derived automatically from the same data. We name the features on which the model is in the best quarter of this selection, functions that not every model has, and a weaker point if the model falls in the bottom quarter on it. The line ‘Choose this model if …’ links the most heavily weighted strength to a situation where it matters. This is not a test and not personal advice: the installation, your home and the price also decide what works best for you.

The values come from EPREL; the product page shows the source of every value. How we collect and check the data →

More selections

Sources

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