Reduces natural gas consumption by 50% or more compared to traditional WSHPs

 Reduces Air Source Heat Pump sizing by 50%
 Facilitates conversion to Air Source Heating
 Dual heating source capability: electric, hydronic, or both
 Future-proofs heating systems by providing a fuel-switching strategy
 Flexibility to prioritize fuel sources anytime throughout the day to meet specific goals
 Transfers more heating load onto tenants

Bulldog 2.0 is a straightforward solution offering an energy-efficient and cost-effective path to electrification and decarbonization of multifamily and hospitality HVAC systems. It achieves up to a 50% reduction in natural gas consumption compared to traditional fossil fuel boiler systems.

Bulldog 2.0 utilizes a factory-mounted and wired electric resistance heater to supplement a low-temperature hydronic heating coil, capable of using source water as low as 95°F. Due to the low-temperature requirement, the hydronic loop can efficiently be heated by either a traditional condensing boiler or an air-to-water heat pump. In certain cases, the electric heater can be sized to deliver twice as much heat from electricity compared to the compressors without affecting the overall MCA or MOP design of the unit, resulting in suite electrical requirements equivalent to traditional water source heat pumps. The electric heater can serve as either the first or second stage of heating, depending on application preferences.

Mechanical cooling remains available year-round, preserving traditional Bulldog benefits such as quieter operation, reduced maintenance, extended compressor lifespan, and increased reliability compared to conventional water source heat pump systems.

Air Source Heat Pumps (ASHPs) are highly desirable in locations where natural gas usage is restricted or where carbon footprint reduction is mandated. However, ASHPs can become cost-prohibitive when sized for low ambient conditions. By integrating Bulldog 2.0, the ASHP plant can potentially be downsized by up to 50%, offering flexibility to meet carbon reduction and budgetary objectives. Bulldog 2.0 also helps overcome additional deployment challenges for ASHPs, such as limited roof space, electrical capacity constraints, and noise restrictions, which could otherwise make these systems impractical or financially unfeasible.

Finally, Bulldog 2.0 future-proofs heating systems by enabling fuel-switching strategies without reliance on proprietary refrigerant-based infrastructure, providing maximum integration flexibility with existing building systems.

The result: Bulldog 2.0 directly offsets boiler gas usage and reduces Air Source Heating Plant sizing as necessary to meet both cost and efficiency targets.

No other heat pump does more, with less.