Top AC & Heating Pros for hvac compressor Gretna, LA. Call +1 800-349-3918. 24 Hour Calls. Guaranteed Services – Low Prices.
What We Do?
Residential
HVAC Service
Are you searching for residential heating and cooling support services that are focused on home comfort solutions? The professionals at Keefe's Air Conditioning, Heating, & Electrical sell, install, and also fix HVAC systems of all makes and models. Get in touch with us today!
Commercial
HVAC Service
Commercial heating and cooling maintenance and repairs are inevitable. At Keefe's Air Conditioning, Heating, & Electrical, we deliver an extensive variety of heating as well as cooling services to meet every one of your commercial HVAC installation, replacement, repair work, and routine maintenance requirements.
Emergency
HVAC Service
Emergencies can and definitely do develop, and when they do, rest assured that our team will be there for you! Keefe's Air Conditioning, Heating, & Electrical can easily provide emergency support at any moment of the day or night. Never hesitate to call us the second an emergency occurs!


24 Hour Service
We provide HVAC services 24 hours a day, 7 days a week, 365 days a year. One of our countless service options promises that your comfort requirements are met within your timespan and that even your trickiest heating or air conditioner concerns will be handled today. Your time is precious– and our company will never keep you waiting!

25 YEARS EXPERIENCE
With over two decades of experience bringing our client’s complete satisfaction, Keefe's Air Conditioning, Heating, & Electrical is a premier provider of HVAC services. Serving homes and businesses in , we complete regular maintenance, repairs as well as new installations modified to your needs and budget demands.
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.
Space pressure can be either favorable or unfavorable with regard to outside the space. Positive pressure occurs when there is more air being provided than tired, and is common to minimize the seepage of outdoors impurities. Natural ventilation is a crucial aspect in lowering the spread of airborne health problems such as tuberculosis, the cold, influenza and meningitis.
Natural ventilation requires little upkeep and is economical. A cooling system, or a standalone air conditioner, supplies cooling and humidity control for all or part of a building. Air conditioned structures often have actually sealed windows, because open windows would work against the system meant to keep constant indoor air conditions.
The percentage of return air comprised of fresh air can normally be manipulated by adjusting the opening of this vent. Typical fresh air intake has to do with 10%. [] Air conditioning and refrigeration are offered through the elimination of heat. Heat can be removed through radiation, convection, or conduction. Refrigeration conduction media such as water, air, ice, and chemicals are referred to as refrigerants.

It is essential that the air conditioning horsepower suffices for the location being cooled. Underpowered air conditioning system will cause power waste and ineffective use. Adequate horsepower is required for any air conditioning unit set up. The refrigeration cycle uses 4 necessary elements to cool. The system refrigerant begins its cycle in a gaseous state.
From there it enters a heat exchanger (sometimes called a condensing coil or condenser) where it loses energy (heat) to the outside, cools, and condenses into its liquid phase. An (likewise called metering gadget) manages the refrigerant liquid to flow at the proper rate. The liquid refrigerant is returned to another heat exchanger where it is allowed to vaporize, for this reason the heat exchanger is frequently called an evaporating coil or evaporator.
At the same time, heat is absorbed from indoors and transferred outdoors, resulting in cooling of the structure. In variable climates, the system might include a reversing valve that changes from heating in winter season to cooling in summertime. By reversing the circulation of refrigerant, the heatpump refrigeration cycle is altered from cooling to heating or vice versa.
Free cooling systems can have extremely high performances, and are sometimes integrated with seasonal thermal energy storage so that the cold of winter can be used for summer a/c. Typical storage mediums are deep aquifers or a natural underground rock mass accessed by means of a cluster of small-diameter, heat-exchanger-equipped boreholes.
The heatpump is added-in since the storage serves as a heat sink when the system is in cooling (as opposed to charging) mode, triggering the temperature level to gradually increase during the cooling season. Some systems include an “economizer mode”, which is in some cases called a “free-cooling mode”. When economizing, the control system will open (completely or partly) the outside air damper and close (completely or partially) the return air damper.
When the outdoors air is cooler than the demanded cool air, this will allow the demand to be met without using the mechanical supply of cooling (normally chilled 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 must be less energetic than the return air for the system to go into the economizer mode. Central, “all-air” air-conditioning systems (or bundle systems) with a combined outside condenser/evaporator system are typically installed in North American homes, offices, and public buildings, but are difficult to retrofit (install in a building that was not created to get it) due to the fact that of the bulky duct needed.

An alternative to packaged systems is the usage of separate indoor and outdoor coils in split systems. Split systems are chosen and extensively utilized around the world other than in North America. In The United States and Canada, divided systems are most often seen in residential applications, but they are acquiring popularity in small commercial buildings.
The advantages of ductless a/c systems include easy installation, no ductwork, higher zonal control, flexibility of control and quiet operation. [] In area conditioning, the duct losses can represent 30% of energy intake. Using minisplit can lead to energy cost savings in area conditioning as there are no losses associated with ducting.
Indoor systems with directional vents install onto walls, suspended from ceilings, or fit into the ceiling. Other indoor units mount inside the ceiling cavity, so that short lengths of duct handle air from the indoor unit to vents or diffusers around the spaces. Split systems are more effective and the footprint is generally smaller than the plan systems.
