Replacing and installing a Goodman air conditioner system is something that needs to be done once the old unit is worn out.
Air conditioner units such as Goodman last many years but eventually will need to be replaced.
For Goodman split systems, this includes replacing the outside condenser, evaporator-coil, and sometimes the Line-set.
If you need to replace an old unit, it can be bought from an HVAC company or online from Amazon, eBay, or other websites.
The first step is to examine the old system and see which of the three major components need to be replaced.
This includes the outside condenser, evaporator-Coil, and Line-set.
3 Main Components of a 3 Ton Goodman Air Conditioner
- Condenser
- Evaporator Coil
- Line Set
The outside condenser will need to be replaced, and the best replacement unit will be needed.
If an HVAC company is hired, they will provide all the parts. Be sure to check what components they are replacing.
If you are doing the installation yourself, the condenser can be bought online and need to match the evaporator coil.
The evaporator coil in split systems is the component inside the bottom of the furnace.
It needs to match the condenser and will also need to be replaced.
If you are doing the installation yourself, be sure to buy them as a set since they need to match for size and the refrigerant type.
A Line-set is two copper lines that go between the outside condenser and inside evaporator coil.
The two lines carry refrigerant between the two units transferring heat outside.
Often, Line-sets can be reused as long as it is in good shape and not corroded.
Since a newer refrigerant type is often used, the line-set can be flushed out for any leftover contaminants.
If the line set is corroded and unusable, a new one can be installed.
Steps to Install or Replace a 3 Ton Goodman Air Conditioner (Basic Overview)
- The outside condenser is set on a cement pad. The unit needs to be on a level, solid surface.
- The inside evaporator coil sometimes called an A-Coil, is installed in the furnace.
- The copper line-set is run between the two units and soldered at the ends.
- The system is pumped down with a vacuum pump and HVAC gauges.
- If the vacuum holds and there are no leaks, the refrigerant is let into the system.
- Electrical and the thermostat wires are connected to the condenser.
- The system is tested and now ready to use.
Summary
Installing a new 3 Ton Goodman Air Conditioner is something that is done all the time, with the basic components needing to be examined and usually replaced.
The condenser and evaporator coil are usually always replaced, and the line set is often reused.
It is usually best to install a new line set if the run is not too difficult.
If the old line-set is used, flushing it with a flush kit is a good idea to help remove any leftover particles.
The tips of the line-set need to be soldered into place, making a good seal.
Once the line-set ends are soldered into place, the system needs to be tested for leaks and set into a vacuum.
One method to test for leaks is to set the system in a vacuum and let it sit for 20-30 minutes to see if it loses the vacuum.
If the vacuum is lost, there is a leak, and it needs to be found and fixed.
Another method is to pressure test the system with nitrogen and then vacuum down the system.
The main goal is to have a sealed system set into a vacuum before releasing the refrigerant.
The electrical and thermostat wires are also to be connected.
Do new systems from Goodman come with refrigerant in them?
be sure to check the listing but yes usably the refrigerant comes pre filled in the outside condenser.