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Questions tagged [air]

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10 votes
7 answers
9k views

Why is my air conditioner causing rapid high CO2 levels?

I am wondering if anyone knows why when I turn my recently installed high-efficiency air conditioner on, CO2 levels rocket up in my house? (In just 4 hours they go from around 500ppm to 1200ppm, and ...
Adam Lopez's user avatar
8 votes
2 answers
1k views

How much air under tile is acceptable?

We hired a contractor to do redo our tile. One had to be replaced because it caved inward when a tool was dropped on it. We peeked under the adjacent tiles and there are giant areas without mortar. ...
kliqqer's user avatar
  • 81
7 votes
2 answers
314 views

Is Complete Ductwork Required to Start the Condensor?

I'm in the middle of rebuilding my entire AC system. I've got one 14" return and two 8" supplies hooked up to the blower (on a 2 ton system). I plan to add much more, but for now I want to ...
Tyler M's user avatar
  • 1,070
4 votes
2 answers
2k views

Are there any reasons to not remove air vents through an exterior bedroom wall?

[August update] Just wanted to add that all my windows have "micro-ventilation" - either by design or simply because they are old and have gaps. So essentially, there is always some air ...
Tom R's user avatar
  • 153
3 votes
2 answers
2k views

Can I vent portable air conditioner into the garage?

I have a bonus space that is attached to the garage that we use as a home gym. I want to be able to run a portable air condition when working out. It will only run 2-3 hours a day and probably only ...
Jon's user avatar
  • 33
2 votes
4 answers
657 views

How to bleed central heating in a bungalow with pipework going into the loft?

I am planning to change the radiator in the bathroom for a heated towel rail, but before I do, I want to be sure of the air bleeding procedure as I am only used to central heating in 2 storey homes. ...
Chris Rogers's user avatar
2 votes
3 answers
410 views

Purchasing parts for my HVAC as a retail user

My Trane air handler recently stopped working and after the couple of visits arranged by the home warranty service company failed to resolve the issue, I managed to identify the control board parts ...
Raj's user avatar
  • 21
2 votes
2 answers
536 views

When it's smokey out, why does more smoke get into the house in the mornings and evenings?

We've had thick smoke outside our home for several days now due to the fires on the west coast. We're doing what we can to filter the inside air and keep excess outside air from coming in (covered ...
Terence's user avatar
  • 145
2 votes
1 answer
1k views

What is the opening on the back of wood stove?

I have a woodstove in the living area, and I am not entirely sure what the opening on the back of the wood stove is. The woodstove has a name on the glass: Regency. My fear is that this is where air ...
sammy's user avatar
  • 117
2 votes
2 answers
159 views

Would an electric furnace prevent outside air from coming inside my house?

I have an old oil furnace that is vented to a chimney flue, with a damper. I live in Maryland in a county where burning yard waste is legal. This can cause me to have an asthma attack when my furnace ...
Virginia's user avatar
2 votes
0 answers
110 views

Crawl Space Encapsulation: How to deal with the "Chamber of Secrets?"

I have a south Louisiana home built in the 1950's with a vented crawl space. In the 70's, a den was added with a slab on grade foundation. In this addition, the back porch was converted into a ...
dwest_netdev's user avatar
1 vote
1 answer
60 views

Two Zone Boiler System. One calls for heat, both zone return lines get hot

I have a newly replaced two zone boiler system and am having issues. One zone is the basement only, the other zone is first and second floor. I have basement zone at 70 and it functions as expected. ...
Mike O'Keefe's user avatar
1 vote
1 answer
59 views

Would an automatic bleeder resolve condo heat problems?

Please bear with me as I am trying to help a senior citizen with no heat for over a week in NJ. She lives in an old (built 1966) multiple unit apartment condo where each unit is individually owned. ...
Mon Cia's user avatar
  • 15
1 vote
1 answer
443 views

How can I insulate a window that's tight against the rough opening?

I had new vinyl triple pane windows installed several years ago. Long story short, the contractor placed the new windows directly on top of the 2x4 (home built in 1951) leaving very little to no space ...
Rhonda's user avatar
  • 11
1 vote
1 answer
152 views

Can I add an extension to an air intake for apartment central A/C? Is this a health or code violation?

The apartment I am living in has a nasty odor coming from underneath the furnace/ac and water heater. The air for the furnace is sucked up from this underneath section making all of the air that is ...
LakesResident1870's user avatar
1 vote
2 answers
156 views

is it legal to have the air intake (for heater and ac) coming from outside in CA?

Our apt. building has the heater and ac air intake outside (collecting air from our driveway) in stead of coming from inside. is this legal?
Pierluigi Malavasi's user avatar
1 vote
1 answer
247 views

Do I have damper on my wood stove?

I have a wood-burning stove, and I use it once or twice a year. When using using it I only use a knob (pull or push) which control the air intake. I have noticed that when I use the stove I smell ...
sammy's user avatar
  • 117
1 vote
2 answers
120 views

How to get rid of noise in the water tap

When I turn my plumbing tap on , it gives some whistle sound and I always get the sound , every single time. Please find AV clip here. None of the water taps give this whistle sound , how can I get ...
King's user avatar
  • 117
1 vote
2 answers
143 views

Is this configuration OK for an air admittance valve?

Is this configuration OK for an air admittance valve with the valve on the opposite (right) side of the drain pipe? The sink drains just as fast with or without the air admittance valve though it ...
user171896's user avatar
1 vote
2 answers
216 views

Circuit breaker tripping when heat kicks off [closed]

Why is my 70 amp circuit breaker trip periodically when my furnace blower motor kicks off?
Kermit's user avatar
  • 11
1 vote
1 answer
1k views

Why would a polarized plug not fit into a polarized extension cord?

I purchased a somewhat expensive name brand Beautyrest air mattress. Its electronic pump is at the foot of the bed, and its electrical cord is shorter than the length of the bed, making an extension ...
End Antisemitic Hate's user avatar
1 vote
1 answer
134 views

redirecting some air from outdoor A/C compressor into the attic to cool it down

I can't find any info on this question, and this might be a stupid idea... but anyway: The temperature in the attic is ca. 130F, 3pm, outside temperature 90F. ( Florida, 17y/o house ) Can I direct/...
MikeF's user avatar
  • 11
1 vote
1 answer
47 views

Can HRV be filtered on the outgoing side? Ducted?

JThis may be two questions, but they're both about HRV airflow so let's try it this way... I'm interested in eventually adding a Heat Recovery Ventilator (HRV) to my basement workshop, for fume ...
keshlam's user avatar
  • 29.5k
1 vote
2 answers
51 views

Need help connecting C wire please model GSX16S481AA

I had this unit put in about 3 years ago and have had so many issues with thermostats. Can someone help me identify where to place the c wire? It is available behind thermostat but not plugged in. ...
Raymond Rivas's user avatar
1 vote
2 answers
58 views

Is it correct for air to flow into home from under an addition?

I have seen multiple houses sitting on concrete basements or slabs where additions were added on to the house in the 1970s-80s and air flows directly from under the addition to inside the house. The ...
user35358's user avatar
  • 119
1 vote
1 answer
4k views

Evaporator Coil Cold, but Not Ice Cold

My temperature difference between my supplies and returns is only around 5 degrees F. I opened up my air handler to see if the evaporator coil was dirty, and it was clean -- but running the outside ...
Tyler M's user avatar
  • 1,070
1 vote
0 answers
47 views

Air Changes Per Hour to Filter Smoke

My neighbor has an old wood-burning stove, which he recently started burning a couple of weeks ago. With the way our houses are positioned, the smoke is blowing towards my house and seeping in. It's ...
LandonSchropp's user avatar
1 vote
0 answers
277 views

Noisy non-return valve - does this heating schematic make sense?

I am in the UK. I have an existing closed (pressurized) heating system with a boiler downstairs and the rest of the works + hot water tank in the cupboard upstairs. Problem: when lots of radiators are ...
ADEpt's user avatar
  • 113
1 vote
1 answer
1k views

Can I use two layers of window film to create a narrow, convection-reducing gap?

This is a follow-up to this question. The official answerer A.I. Breveleri writes: The ideal separation distance between film and glass is 1/2 inch. Even 1 inch is too thick as it allows the trapped ...
capet's user avatar
  • 471
0 votes
3 answers
107 views

Split air con : getting outside air inside

I have a split air con Samsung SH09APG. It's a typical air con machine, with an inside and outside unit. I was thinking it would be really useful if it allowed the outside air to come inside the house....
DevShark's user avatar
  • 569
0 votes
4 answers
147 views

Is DIYing a replacement of Electric Furnace and Air conditioner worth it?

My Air conditioner does not produce cold air, however heater part in Furnace works just fine. Air conditoner Unit is at least 20 years old and have no coolent left in the system. I am looking to ...
NIT_GUP's user avatar
  • 121
0 votes
2 answers
68 views

Do I need an adapter to connect this sprayer to my pneumatic compressor?

I don’t know what these connectors are called but when I connect my compressor to the spray head via the male connector it doesn’t seem like a solid connection and leaks air. Is there something else I ...
devshorts's user avatar
  • 115
0 votes
3 answers
3k views

Master bedroom is unbearably hot and stuffy - what do I do?

My master bedroom leaves me SO STUFFY every morning. I wake up feeling like I have a cold. The room sits at the top of the stairs on the second floor, directly across from the foyer. There is a large ...
Stuffy's user avatar
  • 1
0 votes
2 answers
3k views

Is there a window or portable AC system I can use with an hopper window without removing window?

I'm trying to see if it's possible to install a portable AC with hose in this dorm room hopper window without removing the window (See picture attached). I can't seem to find anything online nor a kit ...
Chanman24's user avatar
0 votes
1 answer
282 views

Does a bedroom without ventilation violate code?

I have a bedroom that has no heat/air vent. The room is approximately 120 square feet. Is this a code violation (I live in Utah) and how necessary is it for me to have at least one vent?
Don B.'s user avatar
  • 1
0 votes
1 answer
100 views

New 1500 watt (rated) dust extractor power consumption. Bad unit?

I asked this in the electronic section and been recommended to take it here instead. I've come to this site to ask some advice. I recently bought a 2 HP (1500 watt) workshop cyclone dust extractor, ...
Joseph Griffiths's user avatar
0 votes
1 answer
793 views

Do wall ac/heater units bring in fresh air?

I live in an apartment with a combined wall AC/heater unit, like the type that you often find in hotels. Does this bring in fresh air when operating, or does it just recirculate the air inside the ...
kloddant's user avatar
  • 101
0 votes
3 answers
9k views

AC blower unit stops working intermittent

Recently my central AC's blower unit stops working intermittently after its been on for a few days with no issues. When it stops working, I will wait a few hours and then turn on the thermostat to AC ...
Da P.A's user avatar
  • 167
0 votes
1 answer
117 views

Repurpose old compressor

I recently came across someone who was throwing away an old craftsman air-tank and compressor. They claimed the compressor did now work anymore as it would never build pressure. I had an old ...
Devin Melo's user avatar
0 votes
1 answer
23 views

Window Guard Problems [closed]

I have an extension cord inside my house that is feeding outside via a window. I currently just have a towel blocking the air that’s coming in. Any recommendations for a more commercial, more ...
user183296's user avatar
0 votes
1 answer
39 views

Baseboard heater - bleeder valve and?

A plumber installed the following - see picture. I have no plumbing knowledge, but I believe the bigger piece (on the left) is an air "bleeding" valve but what is that red pull valve on the ...
Mon Cia's user avatar
  • 15
0 votes
1 answer
382 views

my air handler closet is heating up the room behind it in the summer when AC runs the most

My air handler closet gets hot in the summer. Likely because that’s when it runs the most or because it vents to attic and attic heat is coming in. Problem is that it heats up the room behind it. ...
Lisa Ormes's user avatar
0 votes
3 answers
210 views

Is there a difference between combining two fans in parallel and buying one with twice as much CFM?

I want to build something like an "air purifier". I'm considering a box where I have a big filter and I send the air from one side to the other. I want to maximize the air flow through the ...
nck's user avatar
  • 101
0 votes
1 answer
305 views

Preventing air conditioner from running when temp is below 65 degrees outside

Could l wire a thermostat outside and and set is to 68 degrees and use it as a switch to prevent the air conditioner condenser from running when below 68 degrees. And use in-line with the yellow wire.
Patrick Blanchard's user avatar
0 votes
1 answer
240 views

Dust buildup and vent airflow - Should my vents be completely open?

The room that I am in is particularly dusty compared to all the other rooms since I'm in it most of the time and it's very small with lots of stuff inside. I do my best to dust every surface but it ...
ShangWang's user avatar
  • 109
0 votes
1 answer
285 views

What size duct for make-up air?

I have an industrial exhaust fan venting heat from the top of a stairwell. It is a CentriMaster ModelPRN PRN110 with specification sheet here: http://www.acmefan.com/InformationFiles/ModelInformation/...
mankoff's user avatar
  • 514
0 votes
1 answer
368 views

How do i reduce and split hvac duct from 8" round into two rooms

Hi i have small minisplit with 350 cf/m i attached a plenum with 8 inch ridgit round duct attached to it now i need to run it into a bulkhead where one register goes into a small room aprox 12x12 ...
Kamran Rz's user avatar
0 votes
1 answer
1k views

5 hp air compressor wiring

5 hp 80 gal 208/230 volt air compressor, amps 18.6-17.5, LR amps -95, KW- 2.98 Located 80-100 feet from panel--looking for wire size and breaker size thanks John on 230V circuit hp listed on tank ...
john zimmermann's user avatar
0 votes
1 answer
45 views

Air Flow using Vacuum and High Air Pressure Air

I am investigating container homes. Something about the modularity appeals to me. Regardless, I am thinking about one of the challenges that they face is to get adequate air flow without cutting ...
xirt's user avatar
  • 193
0 votes
1 answer
60 views

Should I replace whole system or just leaky component? [closed]

The HVAC guy who screwed me (edit: i do believe he tried to find a leak the first visit, but the second visit he didn't seem to be bothered) on a refrigerant refill (see my other posts) is ...
Tyler M's user avatar
  • 1,070