It’s Important to Inspect the Insulation on Outdoor AC Units

The Journey Towards An Energy Efficient And Sustainable Industry
September 20, 2021
What is the Significance of Air Conditioning Ducts?
October 20, 2021

It’s Important to Inspect the Insulation on Outdoor AC Units

Weathering, UV radiation, and improper installation can cause the insulation on outside HVAC lines to degrade over time, reducing their efficacy. When insulation loses its ability to insulate, energy is lost, and equipment must work harder to maintain the required degree of indoor comfort.

Benefits of Insulation and the Type of Air Conditioner to Use:

Insulation in refrigeration and air-conditioning systems must be able to prevent condensation. Thermal efficiency is dependent on moisture control. Thermal efficiency is lost when moisture affects the insulating material surrounding cold-water piping. Unlike fiberglass insulation, foam insulation has a closed-cell structure that functions as a vapor retarder (jacket) to keep moisture out. Condensation, moisture ingress, and loss of thermal efficiency are all prevented by closed-cell elastomeric insulation solutions like Gulf-O-Flex®. Its design provides superior water vapor transmission resistance as well as long-term durability.

Steps and Guidelines for Replacing Insulation:

Discover which AC line needs to be insulated. Two copper lines exit the building outside and run to the outside condenser unit in a typical domestic air conditioner. Only the cold line of these copper pipes should be insulated. This is the bigger of the two pipes and is known as the “suction” pipe. There’s no need to insulate the smaller, warmer copper pipe, also known as the liquid line because leaving it uninsulated allows it to dissipate heat, which is exactly what you want from an AC system.

Now measure the copper pipe’s length and outer diameter, as well as the thickness of the old insulation. Purchase insulation with the right internal diameter to fit the pipe once you have all of the measurements. You might also want to get some insulating tape to wrap pipe ends and service valves.

Turn off the air conditioning and remove the old insulation once you’ve gathered all of the materials. Wait for the temperature of the suction line to rise to the point where condensation does not return after it has been wiped away. Use a suitable solvent, such as denatured alcohol, to clean any dirt from the pipe. Wrap a few winds of insulation tape on the tubing where it exits the house and wrap any service valves on the condenser end of the tubing after it is clean and dry. Make sure the insulation tape is firmly placed against the outer wall and tightly wrapped around the service values.

You’re now ready to put the new foam pipe insulation in place. To correct for temperature flux, start by measuring the length of the AC line and cutting the insulation end at least ½” longer. Then, overlapping the insulating tape, put the foam tube over the copper piping. Remove the adhesive lining from self-seal insulation and align the edges while pressing the seam together. Remember to take precautions when working with the glue since if the adhesive ends touching, you won’t be able to separate them.

If you’re using unslit Gulf-O-Flex® tube insulation, slice the foam tube lengthwise with a sharp, smooth blade, being careful not to cut all the way through. After slitting the insulation, place it over the AC line and seal the seam using Gulf-O-Seal adhesive. Allow the adhesive to cure until it is tacky when you touch it. Depending on the temperature and humidity, this will take 2-4 minutes. Press the seam together with hard pressure until the adhesive is sticky.

For more information and talk with our expert, please leave any comments here or contact us.


Leave a Reply

Your email address will not be published. Required fields are marked *