Questions tagged [cooling]

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1answer
38 views

How to have skylight windows without turning the house into a cooker

My kitchen and dining room area has slanted sunward-facing skylight windows. It's great that it makes the space feel so huge, open, and bright, but during the summer it turns the whole house into an ...
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1answer
35 views

Installing a larger HVAC blower motor

Recently our A/C started severely underperforming. The culprit turned out to be a clogged condensate line which leaked through the unit and deposited a gallon of water into the blower housing. After ...
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1answer
44 views

Can I use a .006" (.15mm) orifice mist nozzle on a mid-pressure patio misting system?

Specifically, the pressure is around 200 PSI. I get the impression from what I have Googled that .006 and below may only work for high-pressure systems.
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0answers
46 views

Why is this fan coil actuator missing a lever?

I live in a building where a lot of people have a hard time getting their units down to any acceptable temperature. We're all learning more about how fan coils work and one of the things that keeps ...
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3answers
557 views

Meausure the temperature of a fridge

I have a refrigerator that is an old model (no name brand) and does not have indications of what is the actual temperature. I currently suspect that the temperature is higher than what I have set it ...
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0answers
17 views

2017 Samsung Refrigerator RF28HMEDBSR Display Temperature Incorrect

My Samsung refrigerator is displaying the incorrect temperature to the actual temperature. I've used several corded thermometers and placed them in different areas of the refrigerator. The display ...
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1answer
82 views

Can I put a box fan in a chimney to help circulate out hot summer air?

I have a classic brick chimney for a wood fireplace only (i.e. no hot water tank or other things sharing the stack). In peak summer heat, the interior of the upstairs is well above the exterior ...
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2answers
61 views

Two floor home cooling with one ductless heat pump split mini mounted on second floor

I live in Seattle where we have a relatively small number of days where it gets hot enough to need AC. I live in a two story house where the two floors, each being 1200 sq ft in area, are connected by ...
2
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2answers
56 views

Wiring a 24VAC solenoid and furnace summer fan to my thermostat for water cooling

I have an Armstrong heat only furnace, board# G2D95CT080V16C-2A and a Honeywell programmable thermostat, model#: CT2800A1017. I've got an abundance of water on my property and would like to run a ...
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2answers
121 views

How to fit portable air conditioner hoses through a too small wall vent

Our apartment doesn't have A/C, but we do have wall ports for a portable A/C unit. Unfortunately, I can't really fathom how I'm supposed to hook the hoses up to the wall vents. As you can see, the ...
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2answers
82 views

Screwing jalousie windows shut?

My Florida home was built in the late 1950's and has the original jalousie windows. The house gets a bit warm inside on summer evenings when it doesn't rain. The central AC system was serviced two ...
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1answer
75 views

Does effective insulation of concreate block contribute more to energy efficiency in hot weather or cold weather [closed]

I am building a grout filled CMU house in the Ozarks. I have limited funds at this point and so I would like to focus my budget on thermal control where it will be needed most (i.e. heating / cooling)....
2
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1answer
66 views

Sizing a window AC for bedroom, but with extenuating circumstances

I'm looking to install a window AC in my son's bedroom, which is about 120 sq ft. The guides that I'm reading suggest a 5000 BTU unit due to the size. However we live in the high desert where the ...
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0answers
38 views

How to improve cooling in a room/Cool a concrete wall?

Im on a 2nd floor room, it has big front windows and a small one on the side, I am using my computer/full setup on the corner of the room, where beside me is the window wall, but since im in the ...
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2answers
49 views

Can I have independent heating zones with a standard boiler?

We have a new standard gas boiler in our home along with two thermostats, one for the basement and one for the rest of the house (living room, bedrooms, etc). The problem we're having is that the ...
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2answers
30 views

Thermostat for heating and cooling

I have oil fired baseboard heating and a separate AC system. Currently I have two older thermostats installed. I'd like to replace with a single unit, however I can't locate any thermostat that ...
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0answers
39 views

Looking for an alternative part for a refrigerator

I have an old Samsung 2-door fridge. It's model is RS20NRSV. The damper control window isn't working anymore and it seems like finding parts for this model is difficult. EDIT 1: From looking at a ...
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1answer
30 views

Entertainment Area is cooling required with this setup? Where to position fans?

I am getting my entertainment area setup and I wanted to get opinions on where I should install intake/exhaust fans and if it would even be required. Within my "nitch" I am going to have an ...
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1answer
72 views

How do I fix my fridge that is not refrigerating?

My refrigerator (Frigidaire model #frt18b4aw8) is not refrigerating the refrigeration compartment, however the freezer compartment is freezing properly. I opened the back panel in the freezer and saw ...
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2answers
133 views

Are air coolers as effective as air conditioners?

I'm planning to buy an air cooler as it is less expensive to purchase and operate than an air conditioner. Are there any air coolers that can achieve same, or close to, the cooling effect that an air ...
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1answer
36 views

AC troubleshooting

I’m suspecting an upcoming issue with my split AC system. Currently it is working and cooling, however in the last week or so, I’ve noticed that after the AC reaches the set temp, the copper line ...
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2answers
52 views

RV heating and cooling using multiple sources of fuel

I'm trying to design an all terrain/all weather RV for some extreme camping and I'm wondering if it's possible to have a multiple fuel source heating/cooling/refrigeration system. I want to be able ...
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0answers
39 views

AC not blowing cool air, Contractor said HVAC unit is perfectly fine and that it has to do with my smart thermostat (Ecobee 3)

So basically I changed out the filter on my HVAC unit (National Comfort Products, Model CPG41238-U23) and after I did that the AC stopped blowing out cold air. It was working completely fine until I ...
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0answers
829 views

Cold air blowing from return air vent

Cooling stopped working on my second floor zone, and cold air was blowing out of return air vent. I turned off the power to HVAC , it didn't work. When I turned off the thermostat of my second floor ...
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1answer
141 views

Sizing HVAC: 3 vs 2.5 ton AC, 60k vs 40k BTU furnace for 1200sqft?

I'm adding a HVAC system to my single-storey SFH (1200sqft in climate zone 2, San Jose, CA) and the contractor picked out the following system: Furnace: 60k BTU @ 80% Efficiency AC: 3 Ton @ 14 SEER ...
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2answers
97 views

Which AC Hard Start kit capacitor I should use?

My AC system is getting very old and I was wondering if I should add a Hard Start kit and with what spec? Here is my AC spec included below and the existing Dual Run Capacitor is 440volt and 40+5MFD.
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1answer
103 views

Adjusting Blower Speed for Central AC

I am trying to lower the fan speed on blower fan. It is currently set to factory default setting. My AC is 3 ton unit. Model no is 4A7A3036H1000NA. The fan settings on IFC are like TAP 1, 2, 3.... and ...
2
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1answer
215 views

Does leaving fridge doors open several minutes at a time lead to partial freezing of food?

I was hoping someone could help weigh in with a technical explanation here. We have a Whirlpool fridge that is only a few years old, and often notice that food near the back of it (and usually towards ...
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2answers
81 views

Is my brand new central air conditioner short cycling?

I just had a brand new air conditioner 5 ton condenser, coil and furnace installed in a 3,300sqft colonial in Connecticut. It’s 1am right now, 75 degrees outside with 97% humidity. I have my upstairs (...
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1answer
20 views

What would cause my line sets to equalize in cooling mode?

My heat pump line sets only get different temperatures briefly on startup in cooling mode. Then the hissing noise stops and they equalize and only the lower 1/4th of the a-coil gets cold and ...
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1answer
1k views

Why would turning off a fridge/freezer for 24 hours then turning it back on make it work again?

A family member's fridge freezer is now working well after being turned off for about 24 hours and then back on. Before, it was not cooling items, reading around 20 degrees Celsius. Now, after being ...
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3answers
114 views

Replace A/C Unit or add refrigerant?

I have a 20 year old A/C unit in my house here in Texas. Two weeks ago, the unit stopped cooling. A/C company couldn't come out until the next day and the house got pretty miserable. When the tech ...
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0answers
4k views

Samsung Fridge displaying wrong temperature

I have a Samsung RL42HGSW, which I had replaced a faulty thermistor 8 months ago. It worked fine until these days, until another problem appeared: it displays the wrong temperature in the LED panel, ...
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2answers
238 views

Shall I keep windows and blinds open during hot summer days? [closed]

On a summer day with at 36 degrees Celsius, in a room with no air conditioner but only a ceiling fan, and with windows facing north and east, which of the following can I do to make the room feel less ...
2
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1answer
135 views

Compressor melted hole in 5+ year old defrost drain pan, is compressor overheating a possible concern

It is quite possible that my defrost drain pan melting was just normal age/wear & tear but I wanted to double check that there is not possibly a larger issue with my compressor running too hot. ...
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2answers
75 views

Will replacing windows significantly reduce solar heat gain in summer?

A friend of mine is remodeling his 1980s house and was asking advice about keeping it cooler in the summer. The house currently has the original double pane windows, many of which have "popped&...
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0answers
135 views

Venting a hot garage, how much cooler can it get with an exhaust fan?

I life in Miami and the garage gets very hot in the summer and I am trying to cool it down so I can workout in it. The basics are: I'm looking at this product: iLiving - 10" Wall Mounted Exhaust ...
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1answer
40 views

What sort of device plugs in to this outlet?

I am looking to buy a window air conditioner. I would like the get the most powerful air conditioner my electrical system can support. I have this plug on my wall: I have never seen this plug before, ...
1
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1answer
687 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 ...
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2answers
688 views

Is it possible to recharge a dehumidifier

I have an old Santa Fe dehumidifier capable of removing 110 pints of water per day. It has recently stopped working and the company diagnosed it over the phone as being low on R22. But they wouldn't ...
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1answer
40 views

16-year old Trane central AC one package unit is not cooling well?

My central AC is a 16-year old Trane one package unit on the roof top. However, it is not cooling very well. I brought contractors in and it seems that R22 freon is leaking. However, every contractor ...
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0answers
21 views

How to disable LG LT1216CER Thermistor

MY air conditioner's compressor keeps turning off before the desired temperature of the room is reached. I was told I could disable that feature by getting rid of the thermistor. Is this a safe ...
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1answer
51 views

HVAC blows fuse when cooling kicks on

I have Rheem HVAC system that is about 12-4 years old (its an R22 unit). Today it started blowing the fuse on the board when cooling kicks on. The tstat shows a message that says power failure, then ...
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0answers
2k views

Thermostat not getting power (Nest E74)

I replaced an old Honeywell thermostat about a month ago with a Nest thermostat. Friday Nest started displaying an E74 error. I have two furnaces and two outdoor units, one for upstairs and for ...
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2answers
57 views

Is moving a desk upstairs/downstairs for comfort twice a year a sign of poor insulation?

In a side-split on three levels, four including the basement, the heating and cooling unit is almost new (2 years), and the heating/cooling unit was only available at 35% more cubic feet capacity than ...
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1answer
3k views

Mr. Cool 24k mini split. Electrical install

I'm getting ready to install a mr. Cool 24k mini split. The Electrical in the instructions is pretty vague. Just want to double-check that I'm correct on how I'm going to install it. Inside my main ...
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2answers
58 views

Natural AC, Stream Powered heat exchange

I will keep this short and clear as I can. My home has a creek that runs through it about 20' from the side of the house. It is shaded and quite cool even in the summer heat. If I got say an ...
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1answer
156 views

Groundwater cooled heat exchanger - forced air

I have kind of a crazy idea I have been scheming - I live in Alaska, and have a private well - the groundwater here is very cold(40-45F) or so. The last couple of summers have been miserable hot up ...
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4answers
2k views

Heat dissipating materials for a wall that gets very hot?

The exterior wall adjoining one of our rooms gets a lot of sunlight in summer, and I suspect heats up the room a lot, as the exterior wall continues to radiate heat well after sunset during peak ...
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3answers
63 views

Will fiberglass insulation grow mold? (Florida)

Followup to this question one of the comments says that fiberglass can trap moisture and lead to mold/mildew. I did some research myself and found other sources saying the same. This worries me -- ...