Heat pump FAQ: How loud is a heat pump?
Many homeowners considering heat pumps often ask about their noise levels and potential impact on daily life. Understanding these aspects is crucial for making an informed decision about integrating this efficient heating technology into your home.
How loud is an air source heat pump?
Air source heat pumps (ASHPs) are designed to operate quietly, with sound levels typically ranging between 40 to 60 decibels (dB). To put this into perspective:?
- As quiet as a fridge? (Around 40–50 decibels)
- Like an air conditioning unit? (Around 50–60 decibels)
- Or louder than a washing machine? (Above 70 decibels)
“Think of a heat pump like your fridge – only working in reverse. It’s familiar technology, just used differently.”
Geordie Stewart, Retrofit Scheme Manager
Most of the noise generated by an ASHP occurs outside the home, and with proper installation, it’s unlikely to be disruptive indoors or to your neighbours. Modern units often include features like variable-speed compressors and insulated components to further minimize noise.
What about ground source heat pumps?
Ground source heat pumps (GSHPs) are even quieter than air source models. Because the heat exchange happens underground, there’s no external fan unit, meaning GSHPs typically produce just 30–40 decibels – quieter than a whisper.
Noise regulations and planning considerations
UK regulations ensure heat pump installations remain neighbour-friendly. Under Permitted Development Rights, most ASHPs don’t require planning permission if they meet noise limits – typically 42 dB at the nearest neighbouring property.
Recent updates to planning rules in England have further relaxed restrictions, making it easier to install heat pumps in residential areas while ensuring they remain unobtrusive.
Ensuring a quiet installation
To keep noise levels low:
- Choose the right location – positioning the external unit away from windows and walls reduces sound reflection.
- Use a professional installer – expert fitting ensures correct mounting and insulation, minimising vibration.
- Schedule regular maintenance – well-maintained units run more quietly and efficiently.
Is a heat pump right for your home?
Installing a heat pump is a big decision, and it works best when combined with good insulation and other energy efficiency measures. Our Whole House Plan provides independent expert advice, helping you assess whether a heat pump is suitable and how to integrate it into a well-performing home.
Get in touch to start your journey to a warmer, more energy-efficient home. Call our team on 0330 223 2742 (Monday to Friday) or message us today!
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