We have an attic room with terrible insulation.

During the day, I have it set to 75 since it’s never even gonna get that close.

She insists that turning it down will make the room cooler.

How can I explain to my wife that this doesn’t work?

My HVAC is 5 years and 5 months old. Builder, and I, didn't register the HVAC, so out of warranty of 5 years. Airflow has gotten worse over the last week and now there is almost no cold air coming out. Blower looks to be working well. HVAC Company says there is a clog in the Evaporator coil and needs to be replaced. They said everything else including the TXV looks good. Other quotes over the phone for the evaporator coil replacement are around $4k to 5k, Charlotte, NC Area.

So we bought this house a few years ago and in 2020 a new gas HVAC system was installed. Mice chewed on our ducts so we got them replaced today and I went up in the attic and happened to notice that one pipe is pointed to the top of the roof but not out of it. Right next to it is this capped off feature. We have 2 whirlybirds but I don't think this is one of them as usually you can just see right outside from the fins. So did they just not bother to direct it outside and think this is fine? We never had any issues before and have CO detectors in the entire house and in the winter most of the gas should be able to direct out but what the hell. Wonder what everyone else thinks

I got banned from the HVAC sub for posting this. Seems because I haven't posted any HVAC related things they didn't believe I worked in the field. But I did many years ago and that's why I still have this analog Amprobe, and I also had no problem answering their little quiz questions in order to post. Oh well.

Anxious homeowner here… is this the sound of refrigerant leaking from the coil? AC is holding temp just fine at 74. It was over 90 today in Chicago suburbs. I see no ice buildup on the coil or on the unit outside. The unit wasn’t running during the video. Should I shut off the AC?

I’m trying to get this remediated for six years now. 1957 original ductwork. Mastic is removing whatever the finish is. I tested this original ductwork finish and it’s positive for lead. now I have lead material flaking off into my basement.

Fuck these people I’m tired of being lied to

House still has cool air coming through the vents. The machine keeps making a sound while running. The noise starts about 6 sec in.

UPDATE: It was the capacitor, fixed already

I recently bought a new house and it comes with 2 HVAC units, both 1-stage gas furnace+ac unit. I unit is zoned with a Honeywell HZ432 to 3 zones. The other unit is zoned with a HZ432 to 2 zones. The unit with 2 zones controls that second floor where the bedrooms are located. There is an unfinished large attic above the second floor. The furnace/coil are located in this space.

My problem is the second floor has an AC that runs, but it has very high humidity (70% or more at times) which makes keeping it comfortable much harder to do. I changed out the Honeywell Home T6 Pro for an Ecobee Enhanced model. I made some adjustments with it and ran it for a lower temperature and have seen the humidity decrease down more in the 66-70% range. Better, but not great. The other thermostat is an american standard basic model that I will replace with an Ecobee Essential.

I looked at the HZ432 and noted that the configuration seems a bit weird. There are 2 zones, but they are plugged into Zone 1 and Zone 3 with the settings for 3 zones enabled. Is this causing a problem? Any suggestions for decreasing the humidity to a more tolerable level?

Morning folks.

Had some storms roll through all day yesterday and we experienced a power surge that I believe fried something in our AC unit. The outside unit is spinning fine, no odd sounds or hums. I shut the breaker off for 30 minutes for a hard reset and it didn't help anything. The units kick on and the fans blow but there's no cold air. I just pulled into work and didn't think to take pictures before I left home. Whaddya thinks going on here? Capacitor? If so, do the capacitors still store energy or is that a thing of the past?

Appreciate the help and advice and hope yinz guys have a great Labor Day weekend!

Hi,

Does anyone know where to get “Danfoss” items?
I got a quote from cballast.com, prices seem ok, but I am wondering if there are any companies that basically do b2c , and not rs components. I live in a fairly remote area so i expect 1-2weeks delivery anyways.

Thanks for any tips,

Some of the parts im looking for:

Danfoss - 013G1020
Danfoss - 003L7107
Danfoss - 060G3011
Danfoss - 060G1109

🙏 thanks

Pls dont make links just write url without link so i can actually see without getting post removed🙃

Is this something I can clean and maintain on my own? I’m looking for more information. I just bought this house and want to get it ready for winter

Just curious if you guys have any tricks to remove and seal the ends of A frame coil loops.. 3yr old american standard heat pump roof top unit

Hi all,

We have a forced air system in our condo with multiple vents throughout. Occasionally, a strong musty / mildew odour comes out of all vents at once. We haven’t lived here too long, but I think it’s only emitting this odour when the AC is on - but it’ll happen in random spades. Humidity in the unit itself as well is generally pretty low despite living in a wet city which is a bit bizarre.

We’ve tried cleaning the coils but to no avail. Is this likely a condo issue that we’re dealing with? We’re mostly concerned with mold.

We’ve asked our landlord to come clean it but he’s basically going to do the same thing as us so doubtful it’ll rectify the issue.

TIA.

I saw this pile of mud next to my furnace, which is in a closet in my rental apartment. The closet is a floor higher than the ground level (not in the basement). Why would there be mud in there?

Just moved in. The house is almost 100. Any suggestions for this vent? Is there such a thing that I could attach to the wall that would force the air up?

The bed has very very limited clearance from the floor so I don’t think I could put something under the bed.

I’ve done some investigating and I know most people will say move the bed. I’d love to, but it will not fit elsewhere! Trying to make the best of a not great set up.

https://reddit.com/link/1w6sm1l/video/rtxzdrwr6fnh1/player

https://reddit.com/link/1w6sm1l/video/88cv6ent6fnh1/player

https://reddit.com/link/1w6sm1l/video/9fttc2hu6fnh1/player

I need some help with something that's driving me nuts.

There's a continuous LOUD banging click noise whenever I shut off my machine and sometimes when i turn it on. It almost sounds electrical in nature (which seems to be the case given that i see the electrical flash on that inlet wire)

The length of these clicks seems to be correlated with how long I run the AC before turning it off.

Any ideas? I've been trying to get my building to fix it, but they don't seem eager to do anything.

I have an electrical engineering background, a voltimeter, and a can-do attitude.

My unit doesn’t have this option, none of the deflectors on Amazon seem to do what I need, has anyone found a good one for this purpose or came up with a diy option?

Hi All,

We're in the process of planning fora major renovation (gut job) of a 100 year old semi-detached house in Toronto Canada. The house is roughly 1100 Sq ft above grade (2 floors) with a plan to finish the basement (6'5" unfinished ceiling). It's both very exciting but very daunting as my family navigates this project.

The plan includes:

• Replace all drywall/floors
• New electrical (200amp panel)
• Replace all plumbing
• HVAC (Heat pump, furnace, heat pump hot water tank)
• Energy star doors/windows
• Closed cell Spray insulation - Attic R60, Exterior walls R20, Basement R20

Hoping to get some thoughts/opinions on the following

1. We are thinking of running the bulk heads for HVAC on main floor to supply main and 2nd floor. This would mean placing the supply vent high on the main floor with return air on the floor. Goal is to create a bit more usable space in basement. I know typically the supply is placed on the floor under windows. I am unsure if our idea of placing them high will cause problems for the heating. I've read that a building with tight air envelope may experience less stratification. Thoughts on the high supply/low return approach?
2. Thoughts on the Rheem® ProTerra® Hybrid Electric Heat Pump Water Heater? I read reviews online from a few years ago and they all say its very noisy, I am unsure if the noise has improved. We're thinking about this for efficiency (plan to reduce gas usage)
3. Any thoughts on Panasonic Interios Heat pump and Air Handler? I'm reading it's all rebranded Midea products. is there any equivalent product i should consider instead?
4. Thoughts on going with an Electric AUX heating instead of gas furnace for back up? I have an opportunity as part of this reno to step away from gas completely.

Thanks everyone in advance

I'm hoping this helps others who may be considering AC Pro - I have mixed feelings about their system and their company. I don't think anyone can fix what's wrong with their thermostat or app (but I'd love to be wrong about that).

We recently replaced a 25 year old, single-stage gas furnace/air handler and AC compressor with an AC Pro H-series ducted, variable-speed mini-split heat pump system (the air handler is in our attic, and the AC compressor is outside). We had done research and were deliberating between Daikin and AC Pro, and went with the latter because of size restrictions in our attic (low pitched roof) and AC Pro seemed to be better designed for what we need. Our location is coastal Los Angeles, so we won't need a lot of heat in the winter (and usually don't need a lot of AC in the summer either, but the past 6 weeks have been exceptionally bad).

Overall, we like the new system a lot. The variable speed is really nice. The "sleep curve" feature, which allows us to make the house increasingly more cold overnight, then warmer as morning approaches, is amazing for sleep. The system is *so quiet* - we can't even tell when it's running, other than the air flow. The air is so evenly cooled - it feels like an office building. I wish we hadn't waited so long to switch to a variable-speed heat pump (I might regret these words come wintertime, but for now I'm very happy).

Here's the bad part. The thermostat that came with the unit, along with the app (NetHome Plus), do not give you an easy way to turn off the system entirely. You can turn it off, then it comes back on, like a zombie, at the next scheduled event. In order to turn it off completely, we have to disable each of the scheduled events individually in the app (or, presumably, on the thermostat but I haven't tried that). The "away" scene offered in the app doesn't do anything special, as much as it seems like it should; the system still comes back on with the next scheduled event.

I tried talking to AC Pro about this directly, since our HVAC installers are slammed with work right now. They *do not talk to homeowners*. They said I had to reach out to our HVAC guys, so I did, and they came today and didn't understand why anyone would want to turn the system off like we do. I pointed out that if we go on vacation for weeks or months, why would we leave the system on? We figured out the workaround (disabling each individual scheduled event), and they called to speak to a tech since the user manual suggests that by holding the power button for 2 seconds, the system should power off (it turns off, but doesn't stay off - no different than just pressing the button without a 2 second hold).

The tech from AC Pro told them the system was working as intended, and when I tried to ask about the "away" scene in the app, the tech abruptly said, "Have a nice day" and hung up. My tech guys said they will *not* stay on the line when they think the homeowner is on the call. I think this is insane.

I don't know if knowing any of this would've influenced my decision to go with this system (or with this company), but it definitely would've given me pause, at least. Maybe it will help someone else.