Heating-Cooling

What is a Central Air Conditioning (AC) System?: As opposed to ductless, window-based units, Central AC units operate from a central location, moving the cool air throughout the house through a series of supply and return ducts. They are often conveniently controlled through the household thermostat, but must be installed correctly (with proper duct sealing, airflow measurements and proper sizing for the space) in order to operate efficiently.

What are the Heat Pump Types?: There are several types of heat pumps that offer cost-effective and energy-efficient heating and cooling for homes. These may include ducted air-source heat pumps, ductless mini-splits, and ground-source heat pumps (geothermal). While traditional systems burn fuel to create heat, a heat pump instead works by moving heat into or out of a home. Though they require electricity to operate, efficient heat pumps can provide the same amount of heating for a third of the electricity needed for traditional electric heating.

Air-Source Heat Pumps: Heat pumps circulate a liquid, called a refrigerant, between an indoor air-handling unit and an outdoor radiator. When heating a home, the heat pump heats the liquid by pressurizing it, pumps it from outdoors inside, and then circulates it through the home’s heating system.

After the liquid transfers the heat into the building, it is depressurized and cooled. The liquid then travels to the outdoor radiator, where the ambient temperature warms the refrigerant, and the process begins again.

Heat pumps can also be used to cool homes through a similar process. In this case, the warm air inside a home or building is cooled by the liquid, which has been depressurized. The refrigerant is then sent outside and pressurized, which heats it up, and the ambient outdoor temperature cools it.

Air-source heat pumps use the temperatures of the outdoor air to heat or cool homes. Advancements in technology over the past few years have made air-source heat pumps an efficient source of heating and cooling in cold climates like Massachusetts. Models on the market today can operate efficiently even when it is below zero Fahrenheit.

Much like air conditioners, air-source heat pumps can be installed either as central units or split units. Central units utilize a building’s heat distribution system to heat and cool a home. Split units typically provide heating and cooling to just one area of a home, reducing demand on the existing heating system.

Mini-Split Heat Pumps: A mini-split system is composed of two components: an outdoor condensing unit and one or more indoor air handling units, connected by a conduit through your wall. They usually have no ducts, but can sometimes have a short duct system. Mini-split heat pumps can produce cooling for the summer months and heating in the winter months.

Ground-Source Heat Pumps: Ground-Source heat pumps, also referred to as geothermal, is the most efficient type of heat pump. This type of heat pump transfers heat between your home and the ground. This can be the most costly option and takes other factors into consideration such as your lot size, landscape, and subsoil. Geothermal Heat Pump Criteria

Additional Information: Call LELWD at (978) 540-2222 or email [email protected]

To Claim: Please submit online below, or mail in the completed application, along with a copy of the sales receipt showing make and model, and provide the energy efficiency standards as required:

LELWD
39 Ayer Road
P.O. Box 2406
Littleton, MA 014602