Top Heating & Cooling Pros for hutchinson hvac Gretna, LA. Call +1 800-349-3918. 24 Hour Calls. Guaranteed Services – Low Prices.
What We Do?
Residential
HVAC Service
Are you looking for home heating and cooling services that are centered on home comfort remedies? The experts at Keefe's Air Conditioning, Heating, & Electrical sell, install, and also fix HVAC systems of all makes and models. Call us today!
Commercial
HVAC Service
Commercial cooling and heating repairs are inevitable. At Keefe's Air Conditioning, Heating, & Electrical, we supply an extensive range of heating as well as cooling support services to meet all of your commercial HVAC installation, replacement, repair work, and servicing needs.
Emergency
HVAC Service
Emergencies can and definitely do develop, when they do, rest comfortably that our experts will be there for you! Keefe's Air Conditioning, Heating, & Electrical can offer emergency services at any time of the day or night. Don’t hesitate to get in touch with us the minute an emergency occurs!


24 Hour Service
We provide HVAC services 24 hours a day, 7 days a week, 365 days a year. Among our various service options guarantees that your comfort requirements are met within your timespan and that even your most worrisome heating and air conditioner issues will be solved today. Your time is precious– and our team will never keep you waiting!

25 YEARS EXPERIENCE
With over two decades of experience bringing our client’s total satisfaction, Keefe's Air Conditioning, Heating, & Electrical is a premier provider of HVAC services. Serving homes and businesses in , we complete regular servicing, repairs and new installations tailored to your needs and budget guidelines.
Testimonials
Contact Us
Keefe’s Air Conditioning, Heating, & Electrical
1919 Enterprise Dr, Harvey, LA 70058, United States
Telephone
+1 800-349-3918
Hours
Open 24 hours
We also provide hvac repair services in the following cities
More About Gretna, LA
Gretna is the second-largest city in, and parish seat of, Jefferson Parish, Louisiana, United States.[4][5] Gretna lies on the west bank of the Mississippi River, just east and across the river from uptown New Orleans. It is part of the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The population was 17,736 at the 2010 census.[6]
Gretna is located at 29°54′59″N 90°3′15″W / 29.91639°N 90.05417°W / 29.91639; -90.05417 (29.916459, -90.054260)[7] and has an elevation of 0 feet (0 m)[1]
behind the levee along the Mississippi River.
Room pressure can be either favorable or negative with regard to outside the space. Favorable pressure happens when there is more air being supplied than tired, and prevails to minimize the infiltration of outdoors impurities. Natural ventilation is an essential consider reducing the spread of air-borne illnesses such as tuberculosis, the common cold, influenza and meningitis.
Natural ventilation needs little maintenance and is affordable. A cooling system, or a standalone air conditioning unit, supplies cooling and humidity control for all or part of a building. Air conditioned structures typically have actually sealed windows, since open windows would work against the system intended to maintain constant indoor air conditions.
The percentage of return air comprised of fresh air can normally be manipulated by changing the opening of this vent. Normal fresh air intake is about 10%. [] Cooling and refrigeration are supplied through the elimination of heat. Heat can be gotten rid of through radiation, convection, or conduction. Refrigeration conduction media such as water, air, ice, and chemicals are described as refrigerants.

It is crucial that the cooling horsepower suffices for the location being cooled. Underpowered cooling system will lead to power waste and inefficient usage. Appropriate horsepower is required for any air conditioning system installed. The refrigeration cycle utilizes four necessary aspects to cool. The system refrigerant begins its cycle in a gaseous state.
From there it enters a heat exchanger (often called a condensing coil or condenser) where it loses energy (heat) to the outdoors, cools, and condenses into its liquid phase. An (also called metering device) controls the refrigerant liquid to stream at the correct rate. The liquid refrigerant is gone back to another heat exchanger where it is allowed to vaporize, for this reason the heat exchanger is often called an evaporating coil or evaporator.
At the same time, heat is absorbed from inside your home and moved outdoors, resulting in cooling of the structure. In variable environments, the system may consist of a reversing valve that switches from heating in winter season to cooling in summertime. By reversing the circulation of refrigerant, the heat pump refrigeration cycle is changed from cooling to heating or vice versa.
Free cooling systems can have very high efficiencies, and are in some cases integrated with seasonal thermal energy storage so that the cold of winter season can be used for summertime air conditioning. Common storage mediums are deep aquifers or a natural underground rock mass accessed via a cluster of small-diameter, heat-exchanger-equipped boreholes.
The heat pump is added-in due to the fact that the storage serves as a heat sink when the system is in cooling (rather than charging) mode, triggering the temperature level to slowly increase during the cooling season. Some systems consist of an “economizer mode”, which is in some cases called a “free-cooling mode”. When saving money, the control system will open (fully or partially) the outdoors air damper and close (totally or partly) the return air damper.
When the outdoors air is cooler than the demanded cool air, this will allow the need to be satisfied without utilizing the mechanical supply of cooling (usually cooled water or a direct expansion “DX” unit), thus conserving energy. The control system can compare the temperature of the outside air vs.
In both cases, the outdoors air needs to be less energetic than the return air for the system to enter the economizer mode. Central, “all-air” air-conditioning systems (or package systems) with a combined outside condenser/evaporator unit are often set up in North American residences, offices, and public buildings, however are difficult to retrofit (set up in a building that was not developed to get it) due to the fact that of the bulky air ducts needed.

An alternative to packaged systems is using different indoor and outdoor coils in split systems. Split systems are preferred and widely utilized worldwide other than in The United States and Canada. In North America, split systems are usually seen in property applications, but they are acquiring appeal in small industrial buildings.
The benefits of ductless cooling systems consist of simple installation, no ductwork, higher zonal control, flexibility of control and quiet operation. [] In space conditioning, the duct losses can represent 30% of energy usage. The use of minisplit can lead to energy savings in area conditioning as there are no losses related to ducting.
Indoor systems with directional vents install onto walls, suspended from ceilings, or fit into the ceiling. Other indoor systems mount inside the ceiling cavity, so that short lengths of duct manage air from the indoor unit to vents or diffusers around the spaces. Split systems are more efficient and the footprint is generally smaller than the bundle systems.
