HOW IT WORKS
Normal operation
The air-source heat pump operates as it normally would when in heating mode sending fresh, clean air into the building.
FrostShield Detection
As conditions near frosting levels, FrostShield detects outdoor coil temperature levels and determines the precise amount of hot discharge gas needed to prevent frost from forming.
FrostShield Protection
FrostShield maintains the coil temperature above the threshold where moisture condenses and frost forms. This prevents the unit from switching to cooling mode, saving energy.
“FrostShield opens up a major portion of the country that previously could not use air source heat pumps due to low ambient temperatures. It is a game changer for clients with electrification in mind and continues the leading position Addison has obtained as an innovator of the DOAS market.”
The Benefits
Uninterrupted Comfort
FrostShield allows uninterrupted operation of energy efficient electric air source heat pump heating to continuously deliver fresh, clean air.
Green Technology
FrostShield is the only air source heat pump technology that can be applied to continuous heating of ventilation air without relying on supplemental heat from wasteful strip heaters or fossil fuel.
Energy Savings
Without having to switchover to defrost, enormous amounts of energy are saved by not having to utilize heat from the building to clear the outdoor coils.
Wider Range of Applications
FrostShield allows operation in the coldest climates where heat pumps are not traditionally applied without the need for a backup heat source, such as a furnace or electric heat.