Interior residential A/C recommendation

Hey guys,

 Anyone knows good A/C or HVAC forums for residential use?  I'm planning an A/C wall installation in the bedroom that would exhaust into the bahroom from the back of A/C.  Anyone can recommend a wall-mounted A/C and or links/forums?  

This is for CA, US location.

LVL 17
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Hello Tiras:

You asked for a good HVAC forum.

Try this one and join for free.

Look under pools and spas and you find Heating and Air Conditioning.

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
"wall-mounted A/C"
"that would exhaust into the bahroom from the back of A/C."

I think you want a window-mount type A/C (Window Unit Air Conditioner)?

Although you are not installing in a window, any A/C that exhausts from the back must be a Window Unit Air Conditioner, a stand alone air conditioner, or a Portable Air Conditioner.
Google the "type of Air Conditioner + installation" for tips and guides.

Buy from or
Sample Links:
Tiras25Author Commented:
Thanks for the forum link Nickg
Defend Against the Q2 Top Security Threats

Were you aware that overall malware worldwide was down a surprising 42% from Q1'18? Every quarter, the WatchGuard Threat Lab releases an Internet Security Report that analyzes the top threat trends impacting companies worldwide. Learn more by viewing our on-demand webinar today!

Thank you as well.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
I realize you've got your solution, but from my 20+ years in the HVAC business - YOU SHOULD NOT DO THIS!

Exhausting condenser air into your bathroom (or any room in the structure) will more than negate any cooling effect you receive from the unit, and can significantly contribute to mold/mildew/bacteria growth in that space. Air-to-air units need to be exhausted into a "free air space", which would most certainly NOT be a bathroom (or any enclosed room, unless it is HUGE and has sufficient exhaust to the outdoor area).

Instead use a ductless mini-split system, which has a separate evaporator and condenser section. Install the evap where you want, run the refrigerant/drain/controlline to the outdoor unit, and power the outdoor unit only - and you're done. You can buy mini-splits anywhere, including Amazon.

But don't try a window unit, or one of those stand-alone room air units with the exhaust hose. You'll have nothing but trouble from an install like you describe.
Anyone knows good A/C or HVAC forums for residential use?

Tiras25 specifically asked for a HVAC forum. They can get a multitude of opinions there from licensed HVAC persons.

Your comments and opinions can assist them as well.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
There's also HVAC-Talk:

It has both "owner" and "professional" forums, and a lot of HVAC pros hang out there. The owner forum is where you'd want to post, since posting something like that in the pro forums will get you nothing but a bunch of grief from many of the "pros" there.

As an aside: I've been licensed for Class5 HVAC in two US States for the past 15 years. I'm still semi-active in my family's HVAC business, and still go on service calls when I get sick of typing on a keyboard!
RE:"Anyone knows good A/C or HVAC forums for residential use? "
Please ask a mod to reopen your question for further comments or open a new question.

Window units work cheap but are rather noisy, they should be installed to exhaust the hot air outside the buildings window (exhausting hot air into the bathroom is not recommended but will work)

Some portable A/C units come with a hot air exhaust tube / duct that can be directed to another room or better still outside the building via a vent or window.

I have both the above described units working in my home as well as two conventional wall A/C units with the compressor's mounted outside my building.

It's hot and getting hotter every summer here in Tokyo.
Estimated global average will be +4 C in the next coming years = 2-4 meters of sea level increase, so be sure to reside above the water line. :)
Tiras25Author Commented:
Thanks guys.  I'll look into that.  
All your inputs are appreciated.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
exhausting hot air into the bathroom is not recommended but will work
It might work for a bit, but you'll toast that little rotary compressor in short order - trust me, seen it happen all the time here in the hot and dirty South.

You simply cannot exhaust hot condenser air into an enclosed environment, and expect that system to work for any length of time. The condenser section of the system needs to be able to exchange heat just like the evap section, and it can so as long as the ambient air temperature is lower than the converted hot gas temps in the condenser. When that differential begins to narrow, your cooling performance drops, and your oil begins to break down (and those systems hold very, very little oil to protect the components). Rotary compressors (as found in all window units) simply cannot stand much in the way of oil contamination, and they'll give up the ghost quickly. Trust me on this one. I have more "points" as an HVAC tech than I'll ever have as an Access Experts.

Tiras: Do yourself a favor. Listen to someone who is active in field of A/C in a climate that is NOT well suited for cooling. Don't exhaust that unit into an enclosed space. Install it correctly, into an exterior wall, or buy a unit that is more suitable for your installation requirements. I do understand that you are sometimes strapped, but you're throwing money away by trying to do what you're suggesting, and you can cause a LOT more harm to the bathroom (read: Money) than you'll EVER save by installing in the manner you're suggesting. It. won't. work.

PS - there's no need to reopen this question. You received your answer from Nick, which was a recommendation of HVAC forums. We're just prattling on about your specific requirements.

Estimated global average will be +4 C in the next coming years = 2-4 meters of sea level increase, so be sure to reside above the water line. :)
Betcha a steak dinner that does not happen.
Tiras25Author Commented:
Sorry is the question reopened automatically?  Sorry, I didn't mean to.   Thought is considered a Discussion after points awarded.

To you comment Scott.  I completely agree with you.  Thanks for these!!
I also want to mention I have a window in the bathroom, a very strong wind from West when window is opened.  This is what I'm planning to do.  To keep the window opened when A/C is operational.  Also, it'll be built into the wall right above the tub.  Drips will go right into the tub.  
I know this is sound a bit of a weird design.  I do not have other choice though.  Besides I am not planning to run it too often.  Maybe one or two months top out of the year.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
No, the question is not reopened, and you've closed it correctly it would seem. I was simply providing my .02 worth to the topic and trying to stop you from making a big mistake.

Seems kind of counter-productive to open a window when you need cooling. The open window, in most cases, would be more than enough to counteract any cooling effect you'd get from the window a/c, assuming it's actually large enough to actually exhaust the heat coming from the condenser.

In addition to the poor performance and severely shortened lifespan of the unit, condensate from any a/c is full of microbes, bacteria, etc etc, and is a perfect place for breeding all sorts of nasties. It's not really safe to be in a living space, which is why they're always piped away from those spaces (ever hear of Legionaires' disease?). Window units drain out of the back, but they don't really produce a lot of condensate, which means you end up with a fair amount of standing water in a hot, steamy environment (produced by your condensate heat) - again, the perfect breeding ground for all sorts of things.
@ Scott McDaniel glad to have a licensed for Class5 HVAC in two US States person that is willing to go the extra mile to give HVAC advice without expecting points for your effort.
I was trained in HVAC including Automotive AC, back when a licence was not needed and have worked in many countries ( HVAC is much the same overseas, it's the constant changing circuit technology,  power Voltage, and area regulations that differ)

I look forward to that free dinner...
Level has risen one meter since I have been here.
Scott McDaniel (Microsoft Access MVP - EE MVE )Infotrakker SoftwareCommented:
I'll take mine medium-rare, with a side of scallops.

Sea Level rises and falls over the course of time. Glaciers calve/melt, and they grow. Ice sheets thaw and re-freeze. It's what happen to our planet. The trouble is we (humans) are so self-absorbed that we believe we can impact that, and that our short time here on the planet is the most important time ever, and that all other events prior to our lifetime have been leading up to this exact moment.

The planet will be here when we're gone, and sea levels will rise and fall long after we've gone to our greater reward.
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today

From novice to tech pro — start learning today.