The installation of the split air conditioners is a crucial job. If the installation is done accurately your air conditioner will give optimum cooling, but if it is not done properly you won’t get the desired cooling effect. A poor installations also leads to frequent maintenance problems.
Several factors have to considered during the installation of split air conditioner.
1. Strength of wall to hold the AC
The indoor unit of split AC must be installed on a wall strong enough to hold the unit’s weight.
2. Proper spacing between wall and AC unit
The indoor unit of split AC requires at least 15 cm of open space surrounding its top and sides for proper air flow.
3. Appropriate installation height from ground
Mount the indoor unit of split AC at a height of 7-8 feet above the ground for adequate cooling inside the room
4. Correct tilt angle of indoor unit
While fixing the aluminum bracket on wall make sure that the bracket is given a slight tilt angle, so that the indoor unit of split AC, when fitted is also at a slight angle to enable unrestricted flow of the condensed water from the drain pipe.
5. Correct location of outdoor unit
For proper cooling, mount the indoor and outdoor units of split AC at location away from direct sunlight and water. Install the outdoor unit of split AC in open space so that there is no hindrance to the heat dissipated from the condenser.
6. Proper placement of outdoor unit
The outdoor unit of split AC must be placed on a flat and rigid surface. This unit contains key components of split AC like compressor, condenser, fan motor etc. If the unit is not on a flat surface then it will vibrate excessively, which can lead to the breakage of copper pipes, coolant leakage and compressor/condenser damage. Further, the vibrating unit makes lots of noise which could disturb you and your neighbors.
Recommended Out Door Unit Stands available online:-

Monitor AC Stand
Heavy Duty Air Conditioner Outdoor Unit Mounting BracketEasy To Install and set up
Heavy Duty GI Steel having weight carrying capacity utpo 150 Kgs
7. Right distance between indoor and outdoor unit
Correct distance between the indoor and outdoor unit plays a very important role in cooling. The coolant at very low temperature flows inside the copper tubes between indoor and outdoor units of split AC. There is always some loss of cooling effect to the atmosphere when the refrigerant flows between the units. Hence to reduce this loss, keep the distance between the indoor unit of split AC and the outdoor unit of split AC as minimum as possible. The maximum allowable distance between the indoor and the outdoor units of split AC can be about 15 meters.

Godrej High Quality Air Conditioner Copper Pipe
High Quality Air Conditioner Copper PipeGodrej high quality air conditioner godrej copper pipe 1/4
A good quality Copper Pipes are always recommended for AC Installation. Here, we have some recommendations for you:-
- Visiaro Soft Copper Pipe/Tube Pancake Coil, Outer Diameter – 1/4 inch and Wall Thickness – 23 gauge
- Visiaro Soft Copper Pipe/Tube Pancake Coil, Outer Diameter – 3/8 inch and Wall Thickness – 23(L) gauge
- Visiaro Soft Copper Pipe/Tube Pancake Coil, Outer Diameter – 1/2 inch and Wall Thickness – 23 guage

Stylista ac Covers
Set of Indoor and Outdoor Unit for 1 ton Capacity Lattice PatternWaterproof covers to protect your air conditioner in any kind of water logging or damage through rain water in off season
We also recommend these other AC Covers to keep your AC dust free when not in use:-
- Stylista Ac Cover Set Of Indoor And Outdoor Unit For 1.5 Ton Capacity
- SVK Dream Air Conditioning Dust Cover Waterproof Folding Ac Cover for Spilt Ac for 1 To 1.5 Tone AC (Assorted Color & Design)
- Stylista Split ac Cover Set of Indoor and Outdoor Unit 2 ton Capacity Surface Pattern Blue
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Thanks for sharing these factors to take into consideration when installing a split AC system installed. These things seem too technical to DIY in my opinion, I have a split AC unit at home as well and I had it installed by a reputable HVAC company that offers air conditioning installation in Phoenix and so far, everything about the AC has been great as the installation seems to be have been done properly by experienced installers.
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Nicely explained article. It gaved me a clarity about which guidelines i should follow while installing a split AC.
Can i fix the outdoor unit on the loft of the restroom with exhaust fan installed.
For proper cooling, mount the indoor and outdoor units of split AC at location away from direct sunlight and water. Install the outdoor unit of split AC in open space so that there is no hindrance to the heat dissipated from the condenser.
I think For proper cooling, mount the indoor and outdoor units of split AC at a location away from direct sunlight and water. Install the outdoor unit of split AC in an open space so that there is no hindrance to the heat dissipated from the condenser.
There is always some loss of cooling effect to the atmosphere when the refrigerant flows between the units. Hence to reduce this loss, keep the distance between the indoor unit of split AC and the outdoor unit of split AC as minimum as possible.
While fixing the aluminum bracket on the wall make sure that the bracket is given a slight tilt angle, so that the indoor unit of split AC, when fitted is also at a slight angle to enable the unrestricted flow of the condensed water from the drain pipe.
Can u install outside unit of ac in the garage
Can u install outside unit of ac in the gsrage
I think The indoor unit of split AC requires at least 15 cm of open space surrounding its top and sides for proper air flow. Mount the indoor unit of split AC at a height of 7-8 feet above the ground for adequate cooling inside the room.
Great Post! Thank you so much for sharing this kind of wonderful things. Split Ac can work 50 foot distance between indoor and outdoor. Can I buy inverter Ac or non inverter AC. I stayed in ground floor and 3 more floors on make towards the sky distance between terris or my floor about 50 to 55 foot so pls advise me.
Even though split AC is lighter in comparison to window AC, it does hold a significant amount of weight. And not every wall is thick and strong enough to hold it. The walls of any space are constructed differently depending on the area it would enclose.
That’s why one should get the advice of an expert to choose the right wall before getting the AC installed.
I think the indoor unit of split AC must be installed on a wall strong enough to hold the unit’s weight. The indoor unit of split AC requires at least 15 cm of open space surrounding its top and sides for proper airflow. And the outdoor unit of split AC must be placed on a flat and rigid surface.
The outdoor unit of split AC must be placed on a flat and rigid surface. This unit contains key components of split AC like compressor, condenser, fan motor etc. If the unit is not on a flat surface then it will vibrate excessively.
If I’ve ever been looking for a new heating and air conditioning unit then we have to know about split unit in HVAC . There are various types of split units in the HVAC world and in this post I’m going to explain the basic understanding of what a split unit is. Thanks for this post.
Thanks for sharing this great article about split ac installation.