Put mini split condenser on roof, or mount to side of building?

All of these questions are pretty easily answered in the fact that when you Install or Replace a Condensor on a roof you need a full mechanical plan that is designed by an Engineer to show where it is installed is safe.
Problem is, no one really does that to Install or Replace a Condensor because you are adding an easy 6-8K on top of the project.
At least that has been my experience. If i were you:
Hire an HVAC Mechanical company and do it right.

lkrshacmzcy

in General Discussion 1 year and 4 months ago

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29 replies

randolph | 1 year and 4 months ago

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I could be wrong but when I was renovating a wood frame we were told that you cannot put the condenser on the roof even if on I beams

vanyali | 1 year and 4 months ago

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Randolph, the problem with mounting things in your roof was probably either that your roof was sloped, or that your rafter couldn’t take the weight. Mounting HVAC equipment on the roof is very common n flat-roofed buildings everywhere.

vanyali | 1 year and 4 months ago

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To mount on the roof, you mount on steel beams. You don’t do that part yourself, you hire a steel guy for that.

randolph | 1 year and 4 months ago

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My roof was flat, we were told no because of fire code on wood frame houses. but my architect could have been wrong.

MDR | 1 year and 4 months ago

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Randolph, OP says it’s a brick house.

xuytbjicwnofjdde | 1 year and 4 months ago

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Has anyone ever put a condenser on the ledge of a flat roof party wall? So not a shared party wall, but a wall that is 100% yours that is separate but touches another separate masonry wall. So you have a full 8 inch wall to theoretically sit condensers on.

michaelcoughlan | 1 year and 4 months ago

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Does anyone have a rec for a steel guy? We bought a wood frame four years ago that had installed central air without permits (permit-less work was extremely, extremely common in my neighborhood until about 10 years ago) . They put the two condensers on the flat roof on a mat. The idea of them falling through the roof keeps me up at night.

Can I do this without a permit? I cannot let the DOB into the house for permits, no way no how.

We are also looking to do the roof this spring. I have NO idea how the roofing guys could do this with the condensers placed the way they are.

justinromeu26 | 1 year and 4 months ago

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i can tell you a guy who works with a lot of steel but i am not sure if he is a steel guy per se. Bill Laredo. he used to be on here as “restoration contractor”. he seems to use it a lot. he has been busy though. company is laredo construction. he does more heavy or structural work than i have done over the years.

lkrshacmzcy | 1 year and 4 months ago

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All of these questions are pretty easily answered in the fact that when you Install or Replace a Condensor on a roof you need a full mechanical plan that is designed by an Engineer to show where it is installed is safe.
Problem is, no one really does that to Install or Replace a Condensor because you are adding an easy 6-8K on top of the project.
At least that has been my experience. If i were you:
Hire an HVAC Mechanical company and do it right.