Do I need to insulate refrigerant lines?

You typically don’t need to insulate the high-pressure refrigerant line. You should, however, insulate the low-pressure refrigerant. Insulating the low-pressure refrigerant line will protect against condensation.

Which refrigerant lines should be insulated?





A typical residential AC unit has two copper lines that both exit the building exterior and run to the outside condenser unit. Only one of these copper pipes, the cold line, should be insulated. This is called the “suction” pipe and is typically the larger of the two pipes.

Why does suction line need to be insulated?

Insulating the suction line is done to prevent condensate from developing and dripping off. This condensate drip can cause water damage to the material under it or cause a slip hazard for people walking below it.

Why insulate liquid line?

Liquid lines generally are insulated. They are warm to hot (110°F (43.3°C) for air-cooled). If liquid lines pass through a space that is warmer than the refrigerant (i.e. the roof of a building at roof level), or if they could be considered hot enough to pose a safety risk, then insulation should be added.

What happens if AC pipe is not insulated?

If the return line is not insulated, the refrigerant returning from evaporator to the compressor will absorb some heat, more heat than it had at the outlet of the evaporator. This extra heat will also be present in the compressed refrigerant going to the condenser, downstream of the compressor.

How do you insulate freon lines?





Quote from the video:
Quote from Youtube video: So that the compressor can cool down. So just kind of fit it over there like that and I strip the old insulation off already. So you get it to a comfortable length where you're happy with it.

Do mini split lines need to be insulated?

Do mini split lines need to be insulated? Yes, mini-split lines are prone to condensation without insulation, which leads to line degradation and system inefficiency.

How do you insulate an air conditioner pipe?

Quote from the video:
Quote from Youtube video: But you'll need to measure your outside diameter of your pipe. And find out which works best for you. So this is a very thick insulation here it's a like a micro cell kind of a foam.

How do you insulate outside AC lines?

Quote from the video:
Quote from Youtube video: Together first thing you have to do is determine what size the copper line is you're going to wrap the copper line I have is half-inch.

Should AC condensate lines be insulated?



No. Building & mechanical codes do not require insulation on A/C condensate drains, based on a reading of the current U.S. Energy Code that I will excerpt here.

What is AC insulation?

Thermal insulation in air conditioning system is primarily used to reduce heat gain or heat loss from piping. Other factors include preventing the icing of water vapor and condensation on cold surface.

Is discharge line insulated?

Discharge lines are generally un-insulated. They may be also very hot, in excess of 150°F (66°C), so insulation may be warranted as a safety consideration, or if the heat loss from the discharge gas line would be considered objectionable to the space.

Which type of insulation is most effective?



Spray foam insulation is the most energy-efficient insulation to create an air barrier in the attic. Certain spray foams can expand up to 100 times its original size, so it fills all of the nooks and crannies in the attic.

Can you run refrigerant lines in a wall?

Mini split refrigerant lines can be run in walls. It is a common practice to hide the refrigerant pipes of mini splits in dry walls for aesthetic purposes. Apart from being more difficult to repair, concealing the refrigerant lines in walls have no impact on the performance of the mini splits.

Do mini split lines sweat?

Liquid And Suction Lines



When using Samsung mini-splits, the expansion device(s) are located in the outdoor unit. Therefore, in the cooling mode, the liquid line actually contains an expanded gas and will sweat.

Can you put a mini split on an interior wall?

Yes, you can install a ductless air conditioner on an inside wall. A ductless air conditioner or a mini-split, doesn’t weigh much, and an inside wall can carry its weight. Therefore, it can be mounted or installed on almost any wall in the home.

Can you paint AC lines?



Do you think of your AC lines as a bit of an eyesore? Line set covers can help them disappear, so they don’t detract from your home’s natural beauty. They come in multiple colors, or you can paint them to complement the exterior of your home. Don’t let the unknown deter you from upgrading your home.

Does line set need to be covered?

Why is it important to fully cover the line sets? Line set insulation keeps refrigerant cool so the air conditioner system runs at peak performance. Cover Guard provides an attractive UV barrier, saving you from having to replace the insulation sleeve over and over.

Can line hide be painted?

Yes! Line-Hide can be painted with most house paints to match exterior décor.