Top Rated HVAC Pros for commercial hvac Marrero, LA. Dial +1 800-349-3918. 24 Hour Calls. Guaranteed Services – Low Prices.
What We Do?
Residential
HVAC Service
Are you searching for residential heating or cooling support services that are focused on complete home comfort remedies? The specialists at Keefe's Air Conditioning, Heating, & Electrical sell, install, as well as fix HVAC systems of all makes and models. Contact us today!
Commercial
HVAC Service
Commercial cooling and heating maintenance and repairs are inevitable. At Keefe's Air Conditioning, Heating, & Electrical, we provide a comprehensive range of heating as well as cooling solutions to meet each of your commercial HVAC installation, replacement, repair, and routine maintenance demands.
Emergency
HVAC Service
Emergencies may and do develop, when they do, rest assured that we will will be there for you! Keefe's Air Conditioning, Heating, & Electrical is able to offer emergency assistance at any time of the day or night. Never hesitate to get in touch with us the minute an emergency happens!


24 Hour Service
We provide HVAC services 24 hours a day, 7 days a week, 365 days a year. Among our countless service options promises that your comfort needs are met within your time frame and that even your trickiest heating and air conditioner troubles will be resolved today. Your time is precious– and our experts 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 top provider of HVAC services. Serving homes and businesses throughout , we complete regular servicing, repairs and also 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 Marrero, LA
Marrero is a census-designated place (CDP) in Jefferson Parish, Louisiana, United States. Marrero is on the south side (referred to as the “West Bank”) of the Mississippi River, within the New Orleans–Metairie–Kenner Metropolitan Statistical Area. The population was 33,141 at the 2010 census.[1]
Marrero was named in honor of the Louisiana politician and founder of Marrero Land Company, Louis H. Marrero. The area was originally referred to and shown on maps as “Amesville”, after the Boston businessman Oakes Ames, who purchased much of the land following the Civil War. In February 1916, the U.S. Postmaster officially changed the name of the Post Office to “Marrero”.[2]
Room pressure can be either positive or unfavorable with regard to outside the space. Favorable pressure takes place when there is more air being supplied than tired, and is typical to lower the infiltration of outside pollutants. Natural ventilation is an essential element in lowering the spread of airborne diseases such as tuberculosis, the acute rhinitis, influenza and meningitis.
Natural ventilation requires little maintenance and is inexpensive. A cooling system, or a standalone a/c, offers cooling and humidity control for all or part of a building. Air conditioned structures often have actually sealed windows, since open windows would work against the system meant to keep consistent indoor air conditions.
The percentage of return air made up of fresh air can normally be controlled by adjusting the opening of this vent. Typical fresh air intake has to do with 10%. [] Cooling and refrigeration are provided 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 a/c horsepower suffices for the location being cooled. Underpowered air conditioning system will result in power wastage and inefficient usage. Appropriate horse power is required for any a/c unit set up. The refrigeration cycle utilizes four important components to cool. The system refrigerant begins its cycle in a gaseous state.
From there it enters a heat exchanger (in some cases 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 gadget) regulates the refrigerant liquid to stream at the appropriate rate. The liquid refrigerant is gone back to another heat exchanger where it is enabled to evaporate, hence the heat exchanger is often called an evaporating coil or evaporator.
At the same time, heat is taken in from inside your home and moved outdoors, leading to cooling of the building. In variable environments, the system might consist of a reversing valve that switches from heating in winter season to cooling in summer season. By reversing the circulation of refrigerant, the heat pump refrigeration cycle is altered from cooling to heating or vice versa.
Free cooling systems can have extremely high effectiveness, and are often combined with seasonal thermal energy storage so that the cold of winter season can be used for summer season cooling. Common 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 functions as a heat sink when the system is in cooling (rather than charging) mode, causing the temperature level to gradually increase during the cooling season. Some systems consist of 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 (fully or partly) the return air damper.
When the outdoors air is cooler than the demanded cool air, this will enable the need to be satisfied without utilizing the mechanical supply of cooling (usually cooled water or a direct growth “DX” system), hence saving energy. The control system can compare the temperature of the outside air vs.
In both cases, the outside air must be less energetic than the return air for the system to enter the economizer mode. Central, “all-air” air-conditioning systems (or bundle systems) with a combined outside condenser/evaporator unit are frequently installed in North American homes, offices, and public structures, however are hard to retrofit (set up in a building that was not developed to get it) because of the large duct needed.

An alternative to packaged systems is the usage of separate indoor and outside coils in split systems. Split systems are preferred and extensively used around the world other than in North America. In The United States and Canada, divided systems are most often seen in property applications, but they are acquiring appeal in little business buildings.
The advantages of ductless cooling systems consist of simple installation, no ductwork, higher zonal control, versatility of control and quiet operation. [] In area conditioning, the duct losses can account for 30% of energy intake. Making use of minisplit can result in energy savings in space conditioning as there are no losses related to ducting.
Indoor units with directional vents install onto walls, suspended from ceilings, or fit into the ceiling. Other indoor units mount inside the ceiling cavity, so that brief lengths of duct manage air from the indoor system to vents or diffusers around the spaces. Split systems are more efficient and the footprint is usually smaller sized than the plan systems.
