Heating & A/C Systems

Forced Hot Air Furnace
A forced hot air system uses a heat exchanger to heat the air that is blown across it. This warm air is then distributed throughout the building with ductwork. The heat exchanger is heated by burning a fuel inside it. The exhaust passes back and forth through tubes before being pushed out of the building through a chimney or vent pipe. The exhaust does not mix with the air blowing around the tubes and into the ductwork. The heat exchanger should be checked regularly for leaks to prevent carbon monoxide poisoning. Forced hot air systems use convection to heat the air very quickly but the furniture and other objects in the room respond more slowly. Individuals who are accustomed to baseboard or radiant heat may feel that the house is not warm even though the air is. Also there is some noise due to the air movement. Because the air is being re-circulated it is easy to add filtration, humidification, and air conditioning to a forced hot air system. Jay Moody Heating & Air Conditioning services and installs all brands of forced hot air systems.

Hydro-Air
Hydro-air units use ductwork to distribute air just like a forced hot air system, however a hot water coil replaces the heat exchanger. This coil is heated by a hot water loop from a boiler or GeoThermal heat pump. There are many advantages to hydro-air units. They can be put in attics and other tight places where it would be difficult or impossible to place a gas or oil fired furnace. Multiple hydro-air units can be fed by a single boiler in a different part of the house allowing for different heat/cool zones for different sections of the house. The boiler used to feed the units can also be used for domestic hot water or in floor radiant heat. Just like forced hot air, filtration and humidification is simple with hydro-air units. Last but not least hydro-air units can be and almost always are combined with air conditioning. Service usually consists of a simple filter change. Jay Moody Heating & Air Conditioning services and installs both hydro-air units and the boilers or geothermal units to feed them.

Forced Hot Water (Baseboard Radiators)
Forced hot water has been the traditional heat method in Massachusetts and all of New England. However, it has become less popular in recent years because it cannot be combined with air conditioning without two completely separate systems. Forced hot water (around 190 degrees F) passes through baseboard radiators along the wall and uses radiation to heat the objects in the room rather than just the air itself. The water circulation is much quieter (silent) compared to that of air and the pipes take up less space than that of ductwork. One drawback people sometimes forget is that baseboard radiators prevent furniture from being placed flush against outside walls. The water is heated by a boiler which can be fired by oil, natural gas, or propane. Whatever the boiler type, it should be serviced regularly. Call Jay Moody Heating & Air Conditioning for boiler service in central Massachusetts.

Radiant Heat
Although it is not new technology, radiant heat has become more popular of late because it is so comfortable. Radiant heat uses hot water (around 110 degrees F) from a boiler to heat the floor. The floor warms your feet which keeps you comfortable. Also because it is in or under the floor this heating system is unobtrusive into your space or sound. If you are interested in installing radiant heat in a new or existing house or room call Jay Moody Heating & Air Conditioning to set up a free consultation on installing radiant heat in your home.

Heat Pumps
Heat pumps work exactly the same as air conditioning but in reverse. The heat is pulled out of the air and placed into the conditioned space. They work well with air temperatures above 50 degrees but are very inefficient when outside temperature is below 30 degrees F for typical unitary products, and therefore are not used much in New England. If you are looking to install the Mitsubishi brand equipment, they will run down to 5 degrees outdoor temperature operating to a 100% capacity.  The Mitsubishi hyperheat version will actually run down to -13 degrees @ 80% heating capacity.  These units are extremely efficient for this temperature zone and can potentially save you 2/3 off your current heating bill.   Since ground temperature stays above 50 degrees Fahrenheit,  geo-thermal heat pumps are also extremely efficient.  Jay Moody Heating & Air Conditioning services and installs heat pumps.

Oil Burners
Whenever natural gas is not available oil is the natural choice. Oil is stored in a tank and then piped though a small tube to the burner. The burner can be either placed in a furnace for air or a boiler for water. Although the oil tank can be stored outside it is not recommended. It should be stored in a basement so that the oil doesn’t undergo extreme temperature changes. The oil is pressurized at the burner and then mixed with air and burned. It does not burn as clean as natural gas and therefore must be serviced at least once a year. Jay Moody Heating & Air Conditioning installs and services oil burners.

Natural Gas / Propane
Natural gas and propane units are essentially the same and systems can be converted from one to the other by replacing a few components. Gas burns much cleaner and hotter than oil. Although very little maintenance is required on a gas systems they should still be serviced annually to check for leaks which cause carbon monoxide. Call Jay Moody Heating & Air Conditioning to schedule your maintenance and carbon monoxide check today.

Air Conditioning
Air conditioning uses freon to transport heat from inside the building to the outside air. This is done by compressing the freon into a liquid, and cooling off the liquid by convection outside (outdoor condensing unit). The liquid freon is then piped inside where it is evaporated. When evaporated, the temperature drops with the pressure and it becomes a low temperature gas (indoor air handler). The freon is then able to absorb heat out of he house and carry it back outside where it starts the cycle all over. The air in the house is circulated over cool fins where the humidity in the air condenses and is then drained to the outside as water. On a humid day with your A/C working properly you will see water running out of the drain. Because the air passes through a coil with thousands of tiny fins, it is imperative that the air be filtered properly and the filter be changed regularly. Jay Moody Heating & Air Conditioning services and installs all brands of A/C.  For homes which have no duct work, a duct-less system could be your best option and can be installed and running in one day.

Geo-Thermal Heat Pump
(also called ground water source heat pumps)
Geo-thermal heat pumps are possibly the most efficient year round climate control units available. They use freon in the same way as traditional air conditioning and heat pumps do. They do not push heat into the air or draw heat out of the air as traditional heat pumps do; instead, they use the ground as their heat source and heat sink. While air temperatures can vary from 20 degrees below zero to 110 degrees above ground, the core ground temperature stays constant between 50 and 55 degrees. Geo-thermal heat pumps are more involved and costly to install but pay for themselves usually within a few years due to their lower energy costs. Jay Moody Heating & Air Conditioning currently services several geo-thermal heating systems and would be glad to assist you in installing or servicing yours. For a more in depth explanation go to the links below.

http://www.climatemaster.com/ResGeo.htm
http://www.alliantenergygeothermal.com/stellent2/groups/public/documents/pub/geo_how_001211.hcsp

Indoor Air Quality (IAQ)
Indoor air quality has taken center stage recently. With the ever lengthening list of chemicals being used in homes, awareness of mold problems, as well as common allergies and dust, there are many reasons why you may want to purify the air in your home. Whether you are concerned about the humidity level in your home or the pollen in the air call Jay Moody Heating & Air Conditioning to discuss how we can meet your needs. Below are some of the products which we install and would be glad to answer your questions on.