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Old 07-20-2010, 02:23 PM   #1
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Deck Landing and A/C Unit


I am needing to replace and move the stairs leading to my 2nd floor deck. The problem is that they need to go down about 7-8 steps transition into a landing, turn and then go down the rest of the way. The problem with this is that the landing needs to be right where my a/c unit is and moving the unit isn't very feasible.

Originally, I had planned on having the stair landing directly above the a/c, but looking online, I found that wasn't a good idea, as they need at a minimum of 5-6' between the top and anything overhead. My landing will only be about 7' off the ground at this point, which is only about 3-4' above the unit. So I think I have come up with a solution, but would appreciate feedback before proceeding.

Basically, instead of sitting the landing over the unit, I believe I can angle the landing and move it from being directly over the a/c. It might clip a corner of the unit, but that's it. The a/c unit is about 2-3' away from the house on the East side, about 2-3' away from a solid wood fence on the North side, and open on the West and South sides, which will be patio area. I will also point out that the Large Maple Tree's cannopy extends over the roof and a/c unit, but is a good 25-30' in the air at that point.

The unit is a Trane XR14 2TTR4 unit and I can't find a manual online telling me the specs regarding items placed over or next to the unit. I've included a quick drawing of what I am thinking will work, I just need to know if I can proceed or not.

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Last edited by Master Brian; 07-20-2010 at 02:31 PM.
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Old 07-20-2010, 06:18 PM   #2
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Looks okay to me. Just as long as a 250 lb tech can get at it and remove the fan from the top you should be okay. Make sure all the screws that hold the top down are accessible.

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Old 07-20-2010, 08:02 PM   #3
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Quote:
Originally Posted by yuri View Post
Looks okay to me. Just as long as a 250 lb tech can get at it and remove the fan from the top you should be okay. Make sure all the screws that hold the top down are accessible.
Getting to it shouldn't be a problem at all. The pad is about 3-4" bigger than the unit all the way around and I'm planning on putting the posts a few inches off the pad. I'm trying to be mindful, that some day this will likely have to be replaced, even though it's only a few years old.

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Old 07-20-2010, 08:10 PM   #4
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Deck Landing and A/C Unit


Yah, and the new units are getting bigger and bigger. The minimum SEER rating is likely to climb to 14 or more in the future so bigger units will be required. Lennox has a unique idea. On their high end 17 SEER unit it is the same size as the 15 SEER predecessor. They are using a high end ECM more powerful condensor fan motor to keep the size down. This technology will be available more in the future as it gets more cost effective. May then keep the size of the units down as they are huge and problematic in condos etc. There is also ECM compressor technology on its way so the units may or may not get smaller in the future.
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Last edited by yuri; 07-20-2010 at 08:14 PM.
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Old 07-20-2010, 08:16 PM   #5
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Others are using micro channel condenser coils, to make the units smaller.

As long as the unit has air coming in from the sides, looks ok.
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Old 07-20-2010, 08:21 PM   #6
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Goodman has some new style coil. Technology is amazing with what they can do with airflow and heat transfer methods. I will have to buy and install me a new furnace and AC 2 days before I retire so I can still fix it and not have to pay some techno tech to fix something I know nothing of in the future.
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Old 07-20-2010, 08:40 PM   #7
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Just take the training course before you retire.
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Old 07-21-2010, 11:16 AM   #8
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I really appreciate the feedback, now if I can figure out the framing on these stairs and landing....
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Old 07-21-2010, 11:26 AM   #9
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Have you considered a balcony going across above the unit
Then stairs going straight down ?
Might be easier & leave more room near the unit
Dunno if that will work with the roof line etc
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Old 07-21-2010, 12:46 PM   #10
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Quote:
Originally Posted by Scuba_Dave View Post
Have you considered a balcony going across above the unit
Then stairs gioing straight down ?
Might be easier & leave more room near the unit
Dunno if that will work with the roof line etc
I thought about that, but it would be above the roofline, the A/C is right where the posts would need to be and then the stairs would go too far out into the yard. It's just going to be a trick to cut the winder portion of the stairs, but I'm sure if I think it through I can pull it off.
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Old 07-22-2010, 08:08 PM   #11
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Deck Landing and A/C Unit


To get around it, hire a tech to move the unit elsewhere, or just create two landings, or put a wider span on the joists for the landing, so that you miss the unit, the landing is high enough for air flow, and you do not have to move it.

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