Are Filter/driers required on new installs

[dijit]

My brother just had a house built and I noticed there is no filter/drier on his ac. It is a brand new install. I brought this up to the general contractor and he told me it is not required on new installs. Assuming (and I know this is a big assumption) the lines were nitrogen purged while brazing and evacuated below 50 microns, this shouldn't be a big deal. However, I seem to recall manufacturers requiring their installation on new units. Couldn't find any requirement in the IMC. Anyone know if there is a code requirement or manufacturer requirement for a Filter/drier.

[demorrison]

This is what the Ruud installation manual said. They actually provide a filter dryer with the unit- UPQL condensor.

As an added precaution, a high quality, bi-directional filter drier is recommend- ed to be installed in the liquid line, if not factory installed.

[second opinion]

My brother just had a house built and I noticed there is no filter/drier on his ac. It is a brand new install. I brought this up to the general contractor and he told me it is not required on new installs. Assuming (and I know this is a big assumption) the lines were nitrogen purged while brazing and evacuated below 50 microns, this shouldn't be a big deal. However, I seem to recall manufacturers requiring their installation on new units. Couldn't find any requirement in the IMC. Anyone know if there is a code requirement or manufacturer requirement for a Filter/drier.

What brand of equipment?

[jdblack]

Look inside the unit to make sure its not there.

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[dijit]

Goodman

[dijit]

I will check.

[second opinion]

I will check.

Factory installed

[dijit]

Factory installed

In condenser unit?

[second opinion]

In condenser unit?

Yes

[BaldLoonie]

His installers pull a vacuum below 50 microns??? Sure! Most RNC installers wouldn't know what a micron gauge is, some around us may not even use a vacuum pump judging from our findings

[dijit]

I know, I have seen that too. That's what concerns me. Even saw a guy that had like 5 years of "experience" in commercial that didn't know how to use a vacuum pump. Of course his daddy also worked at the same company.

[socotech]

I think all Goodman condensers come with a factory installed drier. I hate this because I don't have the option to pump down to replace. I like to move them outside the condenser after the first recovery.

[second opinion]

I think all Goodman condensers come with a factory installed drier. I hate this because I don't have the option to pump down to replace. I like to move them outside the condenser after the first recovery.

Why not?