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Frequently Asked Questions

Your questions, answered.

Can you install the Afinia radiators to an existing heating system?
Yes you can install Afinia radiators with both high and low temperature systems.
Is UFH specifically for new builds?
Underfloor heating is generally installed into new builds since new floors are being installed. Underfloor can be retrofitted into existing building if existing floorboards are being lifted or new floor compositions being installed.
What is an Air to Water Heat Pump?
There are two types of air source heat pump – ‘air to air’ and ‘air to water’. The Grant Aerona uses an air to water system which utilises heat energy captured from the air in ‘wet’ heating system radiators or underfloor heating. The process uses the same vapour/compression cycle that extracts heat in a domestic fridge. A refrigerant with a low boiling point is exposed to external air temperatures in an evaporator. The liquid boils off to a gas and absorbs the latent heat energy of the air. This gas is then compressed increasing the heat content in the refrigerant, before passing through a heat exchanger where it condenses back to a liquid state while transferring the heat to the water of the heating system. The liquid refrigerant is then re-circulated through the evaporator and the cycle is repeated. The heat source used by Grant Aerona³ heat pumps is entirely renewable which helps reduce the amount of harmful greenhouse gases being released into the atmosphere and, in so doing, lowers the carbon footprint of the household.