Quietest Heat Pumps UK 2026: Every Brand Ranked by Decibels
Noise is one of the top concerns for UK homeowners considering a heat pump — particularly on terraced streets, semi-detached houses with close neighbours, or where the unit sits near bedroom windows. The good news is that today's best heat pumps operate at 32–38dB, quieter than a library or a typical fridge. This guide ranks every major brand by noise level so you can choose the quietest option for your situation.
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Every Major Brand Ranked by Noise (Quietest First)
Figures from manufacturer data sheets at minimum operating mode. At full output, noise levels are higher. At partial load (normal operation), noise is typically lower than rated figures.
Putting Noise in Context
| Sound Level | Example |
|---|---|
| 20dB | Rustling leaves |
| 30dB | Quiet bedroom at night |
| 32–38dB | Modern heat pump range |
| 40dB | Quiet library |
| 50dB | Normal conversation |
| 60dB | Background music |
Remember that sound decreases by approximately 6dB with every doubling of distance. A unit measuring 38dB at 1 metre will be approximately 26dB at 4 metres — essentially inaudible. For zero outdoor noise, Kensa ground source eliminates the issue entirely.
Noise Reduction Tips
- Position the unit as far from boundary walls and neighbour windows as practical
- Use anti-vibration mounts (included with most brands)
- Ensure the installer enables quiet/night mode settings
- Consider acoustic fencing or screening for very close-neighbour situations
- Avoid positioning on hard, reflective surfaces that amplify sound
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Frequently Asked Questions
What is the quietest heat pump in the UK?
Stiebel Eltron WPL-A at 32dB. Samsung EHS and LG Therma V at 35dB. For zero outdoor noise: Kensa ground source.
How loud is a typical heat pump?
35–50dB at one metre — comparable to a quiet library. At partial load, noise is even lower.
Will neighbours complain?
With a modern, well-positioned unit, complaints are very rare. MCS limits noise to 42dB at the nearest neighbour's window.
Does noise affect planning?
Permitted Development requires under 42dB at the nearest neighbouring habitable room. Most modern units meet this easily.
Can I reduce noise further?
Yes — positioning, anti-vibration mounts, acoustic fencing, and quiet mode settings all help.
Are heat pumps louder than gas boilers?
Similar noise level to a boiler's flue fan, but outdoors rather than inside. Most people find it less intrusive.
Find the quietest option for your home
Check Your Home's SuitabilityFree 2-minute assessment includes noise considerations.
Quiet Heating and the UK Energy Transition
Modern heat pumps have largely solved the noise problem that concerned earlier adopters. The quietest brands operate below typical background noise levels, and even standard models meet planning requirements comfortably. With the BUS grant making installations affordable and solar energy reducing running costs, noise should no longer be a barrier to switching from your gas boiler.