AIR-TO-WATER HEAT PUMP SYSTEM
Daikin ALTHERMA 3 H HT
The Daikin ALTHERMA 3 H HT air-to-water heat pump system is designed to cover a wide range of hydronic applications, making it an excellent choice for replacing boilers and furnaces, especially in areas with low ambient temperatures.
Once the outdoor unit is connected to the indoor unit, there is a range of system combinations, such as being paired with emitters already in the home like baseboards or radiators, or be integrated with heat pump convectors, hydronic air handlers, and in-floor radiant loops.
The versatility extends to applications like new buildings, retrofits, and low-energy houses. This versatile space-saving system contributes to modern aesthetics complementing form and function.
DAIKIN ALTHERMA 3H HT
The Air-to-Water Difference
While every air source heat pump gathers or releases heat, the difference between an air-to-water heat pump and an air-to-air heat pump is in how that heat is used.
Some systems use the energy from the air to heat your home, while others use the air's heat energy to heat water to keep your space comfortable. The Daikin ALTHERMA can do both.
- An air-to-water heat pump heats water, which then warms your home through radiators and underfloor heating, and can even provide hot water.
- An air-to-air heat pump connects to an air handler, allowing it to blow warm air through ductwork and vents, much like a traditional gas furnace.
However, Daikin ALTHERMA doesn’t just heat your home; it has the power to cool it, too!
- An air-to-water heat pump, on the other hand, reverses cycle to cool water. The chilled water circulates through underfloor systems or fan coil units, gently lowering the indoor temperature for consistent and comfortable cooling.
- An air-to-air heat pump operates much like traditional central air conditioners. They send cool air through your home’s ductwork and vents.
Engineered for Comfort
Elevated Heating and Cooling Capacities
Daikin ALTHERMA heat pumps can be up to 5X more efficient* than standard fossil fuel heating systems, helping to reduce energy use.
*Based on typical heating COP of systems.
Heating
Cooling
Stay cool and comfortable all summer long. The Daikin ALTHERMA 3 H HT efficiently provides cooling even if outdoor temperatures reach up to 109°F.
Hot Water
Enjoy reliable hot water year-round. The Daikin ALTHERMA 3 H HT provides domestic hot water for various locations and climate conditions.
PERFORMANCE FEATURES
Daikin ALTHERMA
 | Sustainability: Contribute to a sustainable environment by replacing fossil fuel boilers and furnaces with modern heat pump. |
 | All-Climate Operation: Daikin ALTHERMA operates reliably in outdoor temperatures as cold as -18°F (-28°C) and as high as ≈110°F (43°C) while delivering high leaving water temperatures (LWT) of up 160°F (70°C). |
 | Energy Efficient: The Daikin ALTHERMA electric air-to-water heat pump provides an efficient, sustainable heating solution, supporting the transition away from fossil-fuel-based comfort systems toward renewable energy. |
 | Signature Technology: Daikin ALTHERMA heat pump systems are designed with the latest technology and manufactured to exacting standards. Modern inverter-driven compressors and fan motors plus micro-processor controls deliver constant comfort and high efficiency performance. |
SIGNATURE COMFORT
Daikin ALTHERMA
3-in-1 Plumb-and-Play solution: For heating, cooling, and domestic hot water (DHW).
Easy home integration: Direct boiler replacement, gas furnace/gas water heater replacement with the ability to keep heating installation and radiators.
Reliable in Cold Climates: Designed to operate in cold climate conditions down to -18°F (-28°C) and still heat water up to 160°F.
Proven and Future-focused: Features R-32 low Global Warming Potential refrigerant, which improves energy efficiency and reduces emissions (compared to traditional R-410A systems). However, there is no refrigerant piping inside the home.
Innovative Design: Complimentary grey style enhances the unit’s appearance, but its fan design also helps diminish noise perceptions for a serene outdoor (and indoor) environment.
ELEVATE QUIET
Engineered for Tranquility
The ALTHERMA 3 H HT operates at 41 dBA, similar to the sounds inside a library. The unit offers additional flexibility with a LOW mode, which lowers sound pressures down to a very quiet 35 dBA.
The outdoor unit incorporates a unique ‘invisible’ fan shape to minimize the air contact surface, helping to maintain a low sound level. Three layers of insulation surround the compressor to minimize operational sounds. To further enhance the quiet, the ALTHERMA features double sound reduction pads between the bottom plate and the vibration plate.
Heat Pump Convectors
Daikin ALTHERMA 3 H HT heat pump convectors are indoor fan coils that can provide both heating and cooling to the space. These heat pump convectors can be combined with other emitter types like radiators, baseboards, and in-floor radiant loops, or can be used as a standalone emitter in a space.
Floor-standing
heat pump convector
- High heating/cooling capacity through forced convection.
- Sound pressure 25 dB(A) at about 3 ft.
- Right and left-hand side connections available.
- The slim design is not only discreet, it provides fast and high-capacity operation.
- Integrated thermostat and on-board fully modulating controller allow for independent operation and instant zoning using a single hydronic loop.
High-wall
heat pump convector
- This heat pump convector reaches the selected temperature with maximum speed and maintains it consistently in maximum silence, thanks to the continuously modulated fan.
- Integrated thermostat and on-board fully modulating controller allows for independent operation and instant zoning using single hydronic loop.
Indoor Units
Wall-mounted
indoor unit (hydrobox)
- All hydraulic components are included in the wall-mounted hydrobox for ease of installation and minimal field supplied components required.
- Integrated 6 kW electric backup heater operating in steps of 2, 4, and 6 kW.
- Easy access to PCB board and hydraulic components.
- Compact dimensions allow for small installation space, as almost no side clearances are required.
- Combine with the Daikin ALTHERMA stainless steel domestic hot water tank.
Stainless steel
domestic hot water tank
- Available in 40, 50, and 80-gallon sizes, providing application and installation flexibility.
- High-quality insulation keeps heat loss to a minimum.
- Integrated recirculation connection.
- Connection for an optional anode.
- Integrated 3 kW electric booster heater with App functionality.
- Meets NSF 61 and NSF 372 certification (drinking water standards).
D2271 Daikin Thermostat
Features:
- Designed to work with the ALTHERMA indoor comfort system
- Compatible with the SkyHome App to access your system remotely from anywhere with an internet connection.
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Use this form if you are interested on buying a new Daikin system or if you would like more information about our products.
PERFECTING THE AIR WE SHARE
Why Daikin?
Air is all around us. It is a precious resource that may tend to be overlooked. At Daikin, we place a strong emphasis on pioneering innovative indoor comfort technologies to elevate indoor air quality, helping to enhance personal well-being and reinforcing our commitment to sustainability and Perfecting The Air We Share.
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Comfort meets innovation.
Daikin’s relentless pursuit of innovation and cutting-edge technology sets a new standard for sustainable, energy-efficient indoor comfort solutions.