A common scenario is a young child leaving the house without the parent or caregiver realizing it. In addition, residential pools and spas should have effective, properly operating equipment and effective maintenance and operation.Īlthough it seems obvious, close supervision of young children is vital for families with a residential pool. Residential pools and spas should provide clean, clear water water free of disease agents and a safe recreational environment. The specific goal is to protect the owners, their families, and others who may be attracted to a residential pool. The piping system for a pool should be color-coded to assist the pool operator or the owner to determine the correct way to operate the swimming pool. A regulatory agent or consultant must understand the total engineered pool system and be capable of identifying all equipment, valves, and piping systems. It is essential to be able to evaluate the risks associated with a pool. Home pools, however, are sometimes referred to as attractive nuisances or hazards. Without a doubt, a properly maintained and operated pool is quite rewarding. Nevertheless, it takes a great deal of work and expense to make and keep the pool water clean and free of floating debris. Swimming is one of the best forms of exercise available and having a residential swimming pool also can provide much pleasure. Consumer Product Safety Commission, 2002–Present These drownings can happen quickly and silently-without warning.” In reality, a child slips into the water and often goes under the surface. “Most people assume if their young child falls into the pool, there will be lots of splashing and screaming, and plenty of time to react. To that end, DOE launched the Residential Cold Climate Heat Pump Technology Challenge in 2001 to accelerate deployment of cold climate heat pump technologies.Download Adobe Acrobat version of the manual Cdc-pdf Department of Energy (DOE) is still researching ways to make heat pumps more affordable and efficient. Actual energy savings depend on the relative costs of the combustion fuel relative to electricity.Įven with the impressive performance of heat pumps, the U.S. In comparison with a combustion fuel-fired furnace or standard heat pump alone, this type of system can also be more economical. According to some reports, heat pumps with scroll compressors provide 10° to 15☏ (5.6° to 8.3☌) warmer air when in the heating mode, compared to existing heat pumps with piston compressors.Īlthough most heat pumps use electric resistance heaters as a backup for cold weather, heat pumps can also be equipped in combination with a gas furnace, sometimes referred to as a dual-fuel or hybrid system, to supplement the heat pump. This helps solve the problem of the heat pump operating less efficiently at low temperatures and reduces its use of electricity. There are few heat pump manufacturers that incorporate both types of heat in one box, so these configurations are often two smaller, side-by-side, standard systems sharing the same ductwork. Compared to the typical piston compressors, scroll compressors have a longer operating life and are quieter. One remains stationary, while the other orbits around it, compressing the refrigerant by forcing it into increasingly smaller areas. A desuperheater-equipped heat pump can heat water 2 to 3 times more efficiently than an ordinary electric water heater.Īnother advance in heat pump technology is the scroll compressor, which consists of two spiral-shaped scrolls. Some high-efficiency heat pumps are equipped with a desuperheater, which recovers waste heat from the heat pump's cooling mode and uses it to heat water. It also minimizes the noise from the blower running at full speed. The variable-speed controls for these fans attempt to keep the air moving at a comfortable velocity, minimizing cool drafts and maximizing electrical savings. Some models of heat pumps are equipped with variable-speed or dual-speed motors on their indoor fans (blowers), outdoor fans, or both. Zone control systems, often found in larger homes, use automatic dampers to allow the heat pump to keep different rooms at different temperatures. Two-speed heat pumps also work well with zone control systems. Unlike standard compressors that can only operate at full capacity, two-speed compressors allow heat pumps to operate close to the heating or cooling capacity needed at any particular outdoor temperature, saving energy by reducing on/off operation and compressor wear. A number of innovations are improving the performance of heat pumps.
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