A distributor should compare sound data carefully, while the installer must assess the actual site. Sound power describes emission from the source; sound pressure describes a level at a receiver under stated conditions. These are not interchangeable brochure values.
Sound data and receiver position
Request the measurement standard, operating condition and whether data applies to normal or quiet mode. Heating demand, fan speed, defrost and compressor operation can change the sound. Ask for output available in quiet mode at the local design temperature, rather than assuming night operation preserves full capacity.
Site-specific assessment
A site assessment should identify neighbouring windows, reflective walls, boundaries and sensitive rooms. Distance alone does not account for reflection, tonality, background noise or multiple units. Regulatory limits and assessment methods vary by jurisdiction and land use; confirm them locally instead of applying one Europe-wide table.
Safety and operating limits
Evaluate vibration isolation and pipe connections alongside airborne sound. A screen or enclosure may obstruct airflow and affect service access. Use only a compatible solution with a documented effect under the installation conditions; a promised universal decibel reduction is not enough.
Supplier evidence and responsibilities
Put the chosen position, acoustic assumptions, operating mode and acceptance method in the proposal. For multi-unit sites, assess combined operation. This article supports acoustic evaluation; the location checklist deals separately with drainage, clearance and maintenance access.
Before requesting a project quotation
| Check | Information to prepare |
|---|---|
| Project scope | State the country, project type, operating conditions and required delivery date. Identify which decisions still need an installer or designer. |
| Topic-specific evidence | sound data, receiver positions and a site-specific assessment |
| Responsibility and acceptance | Record who supplies, installs, commissions and services the equipment. Ask which documents and checks are included, and confirm exclusions in writing. |
This checklist helps define a request; it is not a model performance claim, installation design or promise of availability.
Relevant equipment · Request a project quotation — Installation and site planning · About Thermovo
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Heat Pump Outdoor Unit Location: A Homeowner’s Planning Checklist · Buying a Heat Pump: From Supplier Selection to Handover
