Just learned a house we purchased has a heat pump vs a traditional heater. The heat pump / AC unit configuration outside, blower inside. We live in the phoenix AZ area, and an efficient AC unit is critical. AC works pretty well, heat pump works fine too. But is this combined unit more or less efficient than a traditional AC unit and seperate electric heater? Warm climates are good candidates for heat pumps. Heat pumps have more efficiency in heating mode when the ambient temperature is warmer, less efficiency when the ambient temperature is colder. If the outside temp falls too low, the heat pump stops providing useful heat. This is why heat pumps are often supplemented by "emergency" electric heaters that kick in when the outside temp falls too low. Heat pumps can be more efficient than electric resistance heaters because they only need to move heat energy around, rather than create heat. When the outside temp falls too low, however, it takes more energy to move around the very small amount of available outside heat than it would to just create the heat with an electrical resistance heater.

This typically occurs around −18 °C (0 °F) outdoor temperature for airAlso, as the heat pump takes heat out of the air, some moisture in the outdoor air may condense and possibly freeze on the outdoor heat exchanger. The system must periodically melt thisWhen it is extremely cold outside, it is simpler, and wears the machine less, to heat using an electric-resistance heater rather than to overload an air-source heat pump. A heat pump should meet your heating needs fine in Arizona. Note that you can get them in different efficiencies. The AC performance will be rated in SEER, and the heat pump performance rated in HSPF. For example, with Trane units, you have options from 14.5 SEER/8.5 HSPF up to 19 SEER/9.0 HSPF. The higher-end units may also be quieter. Check with your local utility to see if they have rebates; that can also effect the ovearll price. You can find online calculators that let you compare the heating cost of the various options.

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Most of us take heating and cooling for granted. We expect our heating systems to keep us warm during the winter, and we depend on air-conditioning to keep us cool during the summer. When the house is cold in winter or hot in summer, the natural reaction is to call for professional service. Fortunately, there is an alternative. You can cut service costs drastically and keep your heating and cooling systems working efficiently by doing some maintenance and quick fixes yourself. But first, it's important to know how the basics of how heating and cooling systems function. All climate-control devices or systems have three basic components: a source of warmed or cooled air, a means of distributing the air to the rooms being heated or cooled, and a control used to regulate the system (e.g., thermostat). The sources of warm air, such as a furnace, and cool air, such as an air conditioner, in a house often use the same distribution and control systems. If your house has central air conditioning, cool air probably flows through the same ducts that heat does and is regulated by the same thermostat.

When a heating or cooling system malfunctions, any of these three basic components may be causing the problem. Both heating and air conditioning work on the principle that heat always moves from a warm object to a cooler one, just as water flows from a higher to a lower level. Furnaces and heaters put heat into the air to make your home warmer; air conditioners remove heat to make your home cooler. All heating and cooling units burn fuel. Air conditioners use electricity. Most home heating systems use gas or fuel oil; other systems use electricity. The heat pump -- an electrically powered climate control unit -- both heats and cools air. In summer it extracts heat from the air inside your home. In winter it pulls heat from the air outside and uses this heat to warm the air inside. When the furnace is turned on, it consumes the fuel that powers it, whether it be gas, oil, or electricity. As fuel is burned, heat is produced and channeled to the living areas of your home through ducts, pipes, or wires and then is blown out of registers, radiators, or heating panels.

Older systems use the heat they produce to heat water, which in turn heats the air in your home. These systems use a boiler to store and heat the water supply, which is then circulated as hot water through pipes embedded in the wall, floor, or ceiling. When an air conditioner is turned on, electrical power is used to cool a gas in a coil to its liquid state. Warm air in your home is cooled by contact with the cooling coil, and this cooled air is channeled to the rooms of your home through ducts and out registers or -- in the case of room air conditioners -- directly from the unit itself. In the next section, we'll review the different distribution systems used for heating and cooling the home. Daikin products offer energy-efficient performance, proven technology and enhanced comfort for life. Click here to Download the EnergyGuide Labels >Select the type of residential product on the AHRI Directory of Certified Product Performance, search for the model number(s) of your choice, and download the EnergyGuide label associated with the model(s) once the search results have been generated.

Daikin air conditioners are designed to provide years of reliable cooling comfort, even in the hottest weather. Daikin heat pumps are designed to provide year-round heating and cooling performance. Every Daikin brand gas furnace is engineered with a unique heat exchanger design constructed from tubular stainless steel to offer outstanding dependability for worry-free comfort. Installing the correct air handler and evaporator coil is essential for getting the highest level of comfort from your central air conditioning or heat pump system. Daikin residential packaged products are some of the most innovative and technologically advanced on the market. They deliver outstanding indoor comfort for any size home regardless of location. Enhance indoor comfort for you and your family with these indoor air quality products designed to provide fresh, filtered clean air and more. Only select technicians in the business can call themselves Daikin Comfort Professionals.