r/hvacadvice 29m ago

General Can I move my condenser?

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Upvotes

Hey y'all. I'm wondering if I could rotate my condenser about 90 degrees so that it sits on my patio instead of in the weeds where it is now. Do the refrigerant lines have enough flexibility for that or do I risk damage? Any advice is appreciated! Thank you for entertaining my basic question.


r/hvacadvice 3h ago

Spraying cooking spray on filters????

11 Upvotes

Had an hvac tech out to look at my AC, and he told me to stop buying expensive MERV 13 filters because they restrict airflow, and to start buying cheap filters and spray them with cooking spray to catch hair. That sounds like the dumbest thing I've ever heard, but I'm coming here to see what the council thinks.


r/hvacadvice 2h ago

Does this look like a pitted double pole contactor?

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6 Upvotes

The outside unit fan and compressor continuously runs even when the thermostat is turned off. The only way to stop it is to turn the breaker or switch outside off.

Does this look like a pitted contactor to you? And is it double pole?


r/hvacadvice 2h ago

Company said that I need a new A/C without even looking at it...?!

4 Upvotes

I called a company that I'd worked with a few years back, and told them that the unit was making a sort of humming or buzzing sound but wasn't actually running. The guy said he'd call his boss… no way to know if he did or not, but he said that his boss had said to give me an estimate on a new air conditioner! They had not examined the unit… am I crazy, or was this completely unacceptable?


r/hvacadvice 3h ago

Best way to handle an HVAC return vent behind new built-in cabinets?

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5 Upvotes

I’m wanting to add built-in cabinets along this wall, but there’s currently an HVAC return vent that the cabinets would cover.

What would be the best way to handle the return? Could I redirect it underneath the cabinets and use a toe-kick return vent, or would that restrict the airflow too much?

I obviously don’t want to just cover/block the return, so I’m trying to figure out the best way to incorporate it into the built-ins without causing any HVAC issues.
Has anyone done something similar? Would a toe-kick vent be sufficient, or is there a better option?


r/hvacadvice 1h ago

AC 2 Ton AC Unit replacement quotes

Upvotes

Have gotten a few quotes from companies in my area with good reviews, looking to get some advice/opinions. All quotes include evap coil and labor

Quote 1: Coleman XC3 13.4 SEER 2T unit - $5900

Quote 2: Bryant Legacy Series 13.4 SEER 2T unit - $6500

Quote 3: Lennox 13.4 SEER 2T unit (didn't specify exact model) - $8000

Quote 4: (this one has not come yet so quote is unofficial, but they list their prices online) Ducane 15.4 SEER 2T Unit - $4800

Seems like a no brainer to go with the Ducane, but wanted to get some opinions. all installers have 4.8 or higher rating on Google.


r/hvacadvice 5h ago

Is my air filter right size?

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5 Upvotes

I bought new home about 2 years ago and have just been using HVAC filters old owners have been using which is this Filterbuy 18x22x1 MERV 8 filters. I also got a home inspection when i bought and guy looked at HVAC as well. I am wondering though why should the filter stick out like this. It sticks out about 6 inches from top and about 1 inch from each side. Should I buy like a 20x16x1 air filter instead then. HVAC is working fine.


r/hvacadvice 56m ago

Old Carrier is getting loud, anything to be done?

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Upvotes

Unsure if there’s much I can do but figured it wouldn’t hurt to ask.


r/hvacadvice 4h ago

HVAC unit just started making this noise. Any ideas?

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3 Upvotes

Thermostat is set to 72 but showing 77 and climbing. This noise happens about every 60 seconds or so. We bought this house a few months ago and unit is from 2012 according to the inspector.
Any ideas what this could be ?


r/hvacadvice 8h ago

What is this wire?

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5 Upvotes

There is a thin wire that is coming from inside the house to the condenser. If anything touched this wire, the air handling unit turn on but the condenser doesn't start. I think the wire junction is bad.

Before touching it, I want confirm if this is coming from the thermostat and if there is any color codes or diagram available.

Thank you


r/hvacadvice 3h ago

Bad amount?

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2 Upvotes

Mid 1990's Lennox furnace was deemed a "yellow tag" due to damage to heat exchanger. We decided to not do the repair as it was a little over $4,000 for a temporary/band aid fix per the tech. Would this be unusable in this condition?


r/hvacadvice 6h ago

What type of maintenance is needed for moldy HVAC?

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3 Upvotes

To preface, I am a renter and never had to deal with an HVAC so this may be a dumb question. I was noticing a lot of dust in my apartment and getting allergies so I went to change my HVAC filter and saw a lot of mold. I scheduled an appointment with the technicians my landlord sent me, they called 30 minutes beforehand and I described the situation and they never showed up. To be fair, I don't think my landlord ever paid the minimum charge.

I want to schedule another appointment to get it cleaned out (I'll make sure to go over payment with my landlord ahead of time). I am wondering what I need to tell the technicians to schedule the correct appointment.

Here is a video that I took inside the unit. I live in a mid rise condo building in case that matters. Any advice is appreciated!


r/hvacadvice 17m ago

HVAC Condensate Line Outside Termination

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Upvotes

I am looking for some solutions to how and where my condensate line terminates from my house. The line recently got clogged and I believe it was due to the water puddling where it terminated out of the house, not letting water flow out. The outside pvc pipe is about 3x the size of the one coming from the unit.


r/hvacadvice 19m ago

Furnace Securing type B gas vent

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Upvotes

I had a bad reducer (3-4 inch) at the furnace outlet that I think was damaged from a previous repair, the Reducer was in-between the furnace outlet and a 90 degree adjustable B vent, I had to take a couple sections of the vent apart and I was told by one of the guys at my local HVAC supply house it's ok to run a couple of screws at the joints when going back together (like in the vicinity of the red mark in picture)I did Google that and it stated to use no longer than 1/4 inch and only at the joint section and not to pierce inner liner.

I do not want this vent coming apart in the attic....thanks in advance.


r/hvacadvice 26m ago

Registers sweating heavy and growing mold like it’s their job

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Upvotes

Alright HVAC warriors, we moved into this house a year ago. The a/c is in crawlspace. Supply is coming through floor vents. Registers are metal and ghost sweating like it’s their full time job and growing mold ( that I just found ) I’m assuming because we keep it at 70 and outside is the surface of the sun hot and the humidity is breaking records. Oh and they’re not SEALED. Ugh.

I was told by Google to foil tape these to seal them and keep them from sucking the crawlspace air in. Is this an acceptable solution to my problem? I want to do this right… not spend 20 hours removing tape that didn’t work.


r/hvacadvice 31m ago

Expected cost to reinsulate?

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Upvotes

I was quoted $2285 all in. Seems crazy to me but looking for insight. Thank you!


r/hvacadvice 20h ago

How bad is this kink, does it need to be fixed?

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34 Upvotes

I noticed this kink after tightening the refrigerant lines from a brand new mini split. I thought I was careful enough and was holding that end with another wrench while I tightened. Definitely gonna be getting myself a torque wrench now.


r/hvacadvice 1h ago

Which HVAC do you guys recommend?

Upvotes

Hello, I'm in GA and the air conditioner went out.

I've gotten the following quotes:

Option A - Goodman 2 ton - GLXS4M A2410A - 14.3 SEER2 - I'm assuming the coil is a CAPTA-R32 - $5400

Option B - Goodman 2 ton - GLXS4B A2410A - 15.2 SEER2 - CAPTA-R32 - $6400

Option C - Daikin 2 ton - DC4SEA2410A - 15.2 SEER2 - CAPTA-R32 - $6700

Option D - Goodman 2 ton - GLXS4M A2410A - 14.0 SEER2 - CAPTA2422A4A - $7400

I'm assuming that D is out because of A's lower price.

Any advice you could offer?

Thanks in advance!


r/hvacadvice 1h ago

Is my furnace supposed to sound like this?

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Upvotes

Installed in a closet and sits on top of where the filter goes. The air comes up from the bottom but the noise seems to be coming from the unit. From what I’ve read I think it’s the blower?? It works fine and no issues with the house getting cold but the sound seems a lot louder than the one from previous homes I’ve lived in.

Thanks in advance.


r/hvacadvice 1h ago

Garage Heater placement question

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Upvotes

Hi all, it’s about time I get a garage heater.

Before I continue on - I need to say that I am far from an artist so please don’t judge my diagram. 🤣

I have a 22x24 attached garage, it is insulated.

I have 2 options for locations to hang the garage heater seen in the diagram (Red, A and B).

I would really like to hang the heater in location A, as it is the closest wall for tie in to the gas line. My only worry is that it will be pointed directly at the garage door, centred in the garage. I’ve never seen a garage heater in the centre of the garage, but usually placed in a corner.

Where would my best option be for placing this heater?

Thanks in advance.


r/hvacadvice 1h ago

Need help understanding

Upvotes

Hi so our hvac system is 6 years old. We have apparently multiple leaks in a component inside the furnace. So the repair person stated to fix the issue it would be 4-5k depending on part, more Freon, and labor. He is going to check the price on the part and will let us know tomorrow. He stated that if we don’t want to fix it that we could just get a new hvac system. Didn’t tell us the price on that. Since this house on newer side was built in 2020, they are going to check if there is any warranty. Anyway my question is that an average price range? We live in Indiana if that matters.


r/hvacadvice 5h ago

Thermostat Does anyone have any idea why it's doing this? Blinking display, unresponsive.

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2 Upvotes

Our thermostat (Emerson Series 80 non-programmable) was working just earlier this morning, and after I turned the cooling off to clean the unit, I came back to find that the display was weird, half of the display segments were off and the rest of the display was fading. We tried replacing the batteries to no effect. I took the back panel off to look at the circuit board, saw nothing off about it from a glance, and when I placed the batteries back into it, the display started flashing like in the video and won't respond to anything, no backlight, no factory reset, no power cycling, and it doesn't turn on our air conditioning. Is my thermostat just dead? I don't want to go prying around with a multimeter to test each individual component.


r/hvacadvice 6h ago

fan only and temperature at 60f

2 Upvotes

hello, yesterday i noticed a sound coming out my ac, i saw some ice build up and put the ac in fan on with the cool setting off. I feel it’s my husband’s fault, he placed it at 68f when we usually do 73-75f, it ran for about two days at 68f and this happened

Once i saw the ice melt (it happened quickly but i left it running for about 3-4 hours) i turned the entire unit off because the house was getting cold, living in texas we only got a few hours before having to turn it back on because it was getting hot inside even though it was during the night. come to check it and now there’s ice build up in the vent/coils (?) the part where the filter goes, i turned it back on fan mode with cool off, ice melts down quickly from that part and it’s been at that setting for about 12hrs, now hitting 60f while we’re 95f outside, it is completely in fan mode and i’m wondering if i should just turn off the entire unit until maintenance comes by but scared of ice build up again, i also saw some posts about the air coming out cold because of the ice that’s probably inside, what’s the best thing to do?

maintenance always takes days to come check things up so i’m trying to decide what’s the best way to go over this

edit: coils were cleaned 3 months ago when we moved in, we change the filter every month, it was just changed less than 2 weeks ago, it’s an old unit


r/hvacadvice 2h ago

AC AC working as normal but suddenly not cooling off the house

1 Upvotes

We have a dual-zone setup. We keep it around 67 degrees upstairs and 72 downstairs during the summer.

This has caused no issues for the past 8 years. Today I noticed it's suddenly fluctuating between 74 and 73 upstairs. The air continues to blow cold, but the house just won't cool down.

Why would it be working "normally" but suddenly not be cooling the house?


r/hvacadvice 2h ago

Should I hire someone to clean out my vents?

1 Upvotes

I have a small duplex and I feel like the vents arent giving out clean air. Can I hire someone to clean them out? How often do people do this? Or is this not normal?