Cost: ground-coupled ventilation heat exchanger
Separate design, excavation, circuit, intake, condensate, controls, connection and reinstatement. Include auxiliary electricity and maintenance. No local average, standard depth or guaranteed payback is stated; the system does not automatically replace heating or cooling.
Editorial update on 18 September 2026
Separate ground system and ventilation
Identify existing and added equipment: buried circuit, any exchanger, controls and ventilation adaptations. Do not compare a price excluding excavation with a complete offer.
Price groundworks and reinstatement
Itemise spoil, removal, access, service protection, chambers and landscaping restoration. Define ground assumptions and handling of unexpected conditions before signing.
Compare lifetime costs
Estimate maintenance, inspections and auxiliary consumption with explicit assumptions. Justify any support or reduced VAT for exact items; ventilation eligibility does not prove eligibility of all excavation.
The three budget levels
Where your money goes
- AssessmentOn quotationGround, airflow and comparison.
- GroundworksOn quotationExcavation, circuit and reinstatement.
- InterfacesOn quotationAir, condensate and controls.
- CareOn quotationChecks and maintenance access.
What makes the price vary
Ground
Soil, water and services.
Solution
Direct air or fluid loop.
Ventilation
Flow, losses and controls.
Maintenance
Component accessibility.
Indicative scenarios
No grant is deducted from the budget shown here. If a quote mentions support, request the exact scheme and confirmation of your eligibility before including it in financing.
Frequently asked questions
Does it work without electricity?
Request the complete balance: fans and any pump can consume electricity.
Does it replace air conditioning?
Results depend on building and climate. Compare expected comfort without promising a fixed temperature.
Is garden area enough for sizing?
No: assess ground, layout, airflow and expected exchange.
Is condensate drainage optional?
It must be designed with system hygiene and sealing; it is not a cosmetic extra.
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