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Learning About Commercial HVAC Systems
The Three Stages Of Removing An Old AC
Isaiah Chapman
You must remove the existing air conditioner (AC) if you want to replace it with a newer one. You need to remove the existing system carefully to avoid damage to your house, damage to the environment, or personal injury. The best way to remove the AC safely is to use a professional contractor.
Below are the three stages AC contractors usually use for safe AC removal.
1. Refrigerant Removal
Most ACs that require replacement due to their ages use R22 as Freon or refrigerant. The U.S. government has banned R22 due to its damaging effect on the environment. R22 depletes the ozone layer, protecting the earth from the damaging effects of radiation from the sun.
Thus, the first step is to remove the refrigerant from the system. Only a qualified AC technician should handle this step to ensure the refrigerant doesn't escape and contaminate the environment. The contractor will use recovery equipment to capture the refrigerant and a pressure meter to ensure they remove the entire refrigerant from the AC.
2. Electrical Disconnection
The next step is to disconnect the AC's electrical power. This step is necessary to prevent electrical dangers, such as electrocution, when dismantling the old AC.
Some ACs have a disconnect box that allows homeowners to cut off power to the AC in an electrical emergency. If your AC has such a box, the contractor will use it to shut down the AC. The contractor can also use the circuit breaker to cut off power to the AC.
After that, the contractor can disconnect the electrical and electronic parts of the AC. For example, the contractor can remove the thermostat and electrical connections.
3. System Removal
The last step is to remove all the other mechanical parts of the AC. In this stage, the contractor will remove all the remaining pieces of the old unit, such as:
- The copper lines
- The base pad
- The condenser unit (outside unit)
- The air handler (inside unit)
- The condensate drain
The exact steps will depend on the AC type and placement. The contractor may have to cut and unscrew some parts. The idea is to remove all the relevant parts without damaging the house.
AC contractors usually remove the existing system in their quotes if you need an AC replacement service. The contractor should also evaluate your house for other HVAC issues that need work. You may save money by doing everything at once instead of contacting the contractor for individual services every time.
For more information, contact an AC repair service such as Sturdevant Air Conditioning.
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