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That makes a lot of sense. Thank you!

Hi everyone,

I see that the 38MARB has a rating of up to 28.1 SEER and a lower decibel level of operational noise over the more expensive 25HNB6, which runs louder and has a SEER rating of up to...

I'll definitely have the status pressure measured. Thanks for the tip re: an inverter heat pump. I knew to look for a variable speed air handler, but hadn't been aware of the difference an inverter...

The air flow noise is audible but not terrible. The sound I'm concerned with and hoping to avoid in my new system is specifically coming from the outside unit, a loud, fluctuating electric hum.

That's not an option, unfortunately. I live in an attached townhouse, so the most I would be able to do would be to move the outside until several feet away from the wall.

Have you seen the 38MAR...

Not doing recording work or anything like that, but I'm frequently evaluating films for programming and for everything that I've spent on my home theatre system, I'm looking to avoid hearing...

Hi everyone,

I recently moved and am looking to replace an old AC unit with a modern heat pump. Quiet operation is my top concern as the unit will be mounted on an external wall that's...

Has anyone got any suggestions?

One thing I'm thinking about doing is to place a small HEPA air purifier in the closet, as I'm getting very worried about mold growing behind the bubbling areas and...

The spots don't feel as if they're leaking air, but they're soft (yet a moisture meter only reads between 3-5% moisture on those sections of the wall).

The other side of the wall that's bubbling...

That's logical. I'm thinking it could be a good idea to turn the return back to the general positioning it was in with the old air handler, so that it's pulling from above instead of downwards...

Just realized that I forgot to mention something that could be very significant. The air intake is in the closet along with the system.

Previously, with the York unit, the intake was turned...

Apologies for the shots appearing sideways. Not quite sure why that is.

Hey everyone,

I'm hoping that someone here can help me troubleshoot this rather odd situation. Last summer, I replaced a very old York system with a Lennox one. The air handler has always been in...

Shoot, posted this in the wrong forum - I meant to post this in the Homeowner's section. Apologies for that. Still, the question works in either forum, I suppose (but in my case, I'm using the filter...

I've had my HC16 installed since around June of this year. From what I can tell, things still seem fine, but is there a way to know if the system is struggling? I know that Lennox claims the filters...

Would anyone happen to know?

I presume it would, but I can't seem to find it in the online user's manual. Is it in the Installer's settings? As I'm using a heat pump with electric heating strips as my Aux heat, I want to make...

Hi everyone,

Just a heads up to those considering this new stat, it appears that the unit has some bugs that still need to be worked out. I went through two of them over the last month or so, and...

Hey everyone,

I'm happy to report, my humidity issues have been solved! Incredibly, simply setting my fan to run "auto" instead of having it constantly on has made a galaxy of difference. I can't...

Thanks, Jtrammel. The sweating hasn't been happening since the tech increased the blower speed so that the supply temp is 54 (it was 49 before). Also, it had been in the 30 C range outdoors for over...

@Jtrammel: I'd be very open to getting a whole-house dehumidifier, but my system's in a tight closet space. Do you think there could realistically be room? Also, from what I've read, a whole-house...

@Jess: He didn't use the term "welded", that was just me awkwardly trying to describe what he'd pointed to. :)

@Jtramme: That's frustrating beyond belief. I would have been absolutely ok with a...

Update! First of all, I followed Teddy's advice and refrained from having the relay installed when I had the ComfortSense 7500 installed on Tuesday I was initially still thinking about trying the...

Apologies for not writing back sooner. I greatly appreciate all the feedback you guys have given me. Called the installer at 8:30 AM yesterday and they sent a tech over within hours!

He felt that...

Thanks. The new unit is a 2-ton XP14 replacing an old 2-ton York. The air handler is a 2.5 ton CBX27, replacing what I believe was a 2-ton York, though it may have been 2.5 ton as well.
...

Could this be caused by over-cooling, or is it humidity-related?

Thanks. It's the same ductwork I've had for as long as I've lived here (around 12-13 years) and I've never seen this happen before, so I'm confidant it hasn't got to do with air flow so much as it's...

This is rather terrifying. I noticed the paint on my ceiling near a vent hatch was beginning to bubble. I opened the vent hatch and a small amount of water dripped out. Turns out that water has been...

Oh - another question re: overcooling - how low can I bring temps without risking the coil freezing?

Thanks for that. I'll see what I can do to get the readings.

Re: the stat, I've been planning to upgrade my stat for some time. I've got a CBX 27 air handler, which isn't variable speed, so my Ac...

Thanks, Tech23. That's reassuring. To get my indoor RH below 60, I'm overcooling, unfortunately.

If I bring my stat to 19.5, for example, the indoor RH will often climb to the late 60s, and...

As some of you know, I've been having issues with elevated relative humidity since the installation of a new XP14 in May. I noticed today that the outdoor unit seems to be sweating more than my old...

Thanks, Cory. I do have a cap here. Would it be safer to just run a small brush though it to dislodge the gunk instead of using bleach? I worry about putting a corrosive through the piping.

Whew, good to know. Thanks. I was worried it was on the verge of getting a blockage. What is all that stuff?

Could anyone let me know whether this looks normal or is reason for concern?

Could someone check out these images and let me know if this looks normal? This is a P-Trap on a CBX 27 that was installed in late May. I noticed it was beginning to get a bit cloudy a month or so...

Shoot. It's definitely a corner placement, but I don't think that could have been avoided. My old York was installed in that exact place, and the lines are running from there. The installer never...

Thanks, guys. Pushing in against one part of the side panel stops the sound (good call, Mr Bill), but the rhythmic pulses can be felt as I push on it. Could it just be that the side panel is slightly...

Could someone give a listen to the noise on the video and let me know your thoughts? I'm hoping the rhythmically vibrating hum isn't cause for concern, but as I just heard it making this noise today...

Is this something that happens from time to time as outdoor temps change or is it cause for investigation?

I shot a brief video clip to illustrate the noise. Today is the first time I've heard it...

Teddy, thanks so much for the above. That is one the most informative and amazing posts I've ever read.

As temps have risen outside and the compressor's running longer, humidity hasn't been as...

I know, it's really got me baffled that there can be such discrepancies from one gauge to the next. Meanwhile, when it comes to temperature, they're all reading exactly the same. In a worse case, the...

Update: I bought an AcuRite humidity monitor (model #00309) and it's reading 4-5% lower than the Honeywell monitor. The Dehumidifier's reader is between the two.

The more elaborate pro reader...

Ah, that could explain things! I'm unsure of the SEER rating on the old system but it was around 20 years old, likely older.

What do you make of the P-trap photos I posted earlier? Could that be...

Interesting. It's odd, though, as the York system I just replaced never had a problem keeping RH below 50.

Just noticed something as I was snooping around the air handler. I shone a flashlight on the P Trap, which I never really looked at for more than a moment when the system was installed last month...

And it's now at 57% RH. Lovely...

Will do.

System is currently giving me 55% RH at a cooling temp of 18 (if I can trust both gauges here). Notably higher than my 20-year+ old system, but could this be within a normal range?

Thanks, Darrell. Now that they sent over a tech, who inspected the system and gave it a clean bill of health, with a note on the paperwork showing that his humidity reader found no issues with...

So far, there's not been much of a difference. It may just be that the system hasn't needed to do much cooling to maintain temps in the period since the tech was here, thus not giving much chance for...