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Heating Ventilating and Air Conditioning

Heating, ventilating and air conditioning (HVAC) refers to a system used in designing automotive or indoor environmental comfort. It uses ventilation air ducts to provide cooled or heated air to an automobile or a building through outlet vents.

500 Questions

Why are both your inside and outside AC coils freezing?

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Asked by Wiki User

Both inside and outside AC coils may freeze due to restricted airflow, dirty air filters, low refrigerant levels, or issues with the blower motor. When airflow is compromised or the refrigerant levels are low, the coils can become too cold and freeze over. It is important to address these issues promptly to avoid damage to the system.

What causes sooting in gas water heaters?

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Asked by Wiki User

Sooting in gas water heaters can be caused by a few different factors, such as improper combustion due to a lack of oxygen, a dirty or clogged burner, a malfunctioning gas valve, or a problem with the flue or venting system. Regular maintenance and cleaning of the water heater can help prevent sooting issues.

Does smelling dryer sheets and dryer exhaust from the vent outside effect your health?

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Asked by Wiki User

Inhaling the scent from dryer sheets is unlikely to have a significant impact on your health, but it may cause irritation for some individuals with sensitivities. Dryer exhaust from the vent outside should not pose a health risk unless you are directly inhaling it in close proximity, as it primarily contains hot air and water vapor. It's always a good idea to ensure proper ventilation to minimize exposure to any potentially harmful substances.

Why is it saving more energy if you put insulation on ceilings or attics?

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Asked by Wiki User

Insulating ceilings or attics helps to prevent heat from escaping the home during colder months and entering the home during warmer months. This reduces the need for heating and cooling systems to work as hard, resulting in lower energy consumption and utility bills.

Does the color of a house effect its temperature?

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Asked by Wiki User

Yes, the color of a house can affect its temperature. Dark-colored houses absorb more heat from the sun, which can result in higher indoor temperatures. Light-colored houses reflect more sunlight and stay cooler.

What is used as a additive in kerosene heaters as a wick cleaner?

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Asked by Wiki User

A common additive used as a wick cleaner in kerosene heaters is isopropyl alcohol. It helps to clean and prolong the life of the wick by breaking down carbon deposits that can accumulate during use. It is important to follow manufacturer recommendations for proper use of additives in kerosene heaters.

How many btu's does it take to heat up 1 cubic foot of air 1 degree?

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Asked by Wiki User

It takes approximately 0.075 BTU to heat up 1 cubic foot of air by 1 degree Fahrenheit.

In order to heat a room evenly?

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Asked by Wiki User

Ensure proper insulation to prevent heat loss, use a ceiling fan to help circulate warm air, and consider using a programmable thermostat to regulate temperature throughout the day. Additionally, avoid blocking heat sources and keep doors closed to maintain consistent heating.

Why is it bad to burn foam seat cushions in your wood stove?

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Asked by Wiki User

Burning foam seat cushions releases toxic fumes and particles such as carbon monoxide, dioxins, and other harmful chemicals. These fumes can pose serious health risks when inhaled and can also damage the wood stove and chimney. It is best to dispose of foam seat cushions safely and in accordance with local regulations.

How do you check your home ac unit compressor?

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Asked by Wiki User

First make sure power is off...there is three leads that supply power to compressor...they should be Yellow Black and Red....make a diagram where these leads connect on your unit and then disconnect them...You will need a multi meter to check ohms of resistance...Yellow is usually the common lead...attach one meter lead to it...now touch other meter lead to black lead...should read somewhere between 1 to 4 ohms...now touch the meter lead to the red wire...should read somewhere between 3 to 7 ohms...next read from yellow lead to side of compressor...if you get any reading then compressor is grounded and needs to be replaced...if you get no reading there, reconnect lead and see if compressor will run...if it will not then if could be possible capacitor is bad...on some units they have start assist capacitors this could be bad also..replace these and see if compressor runs...if it will not run it will need to be replaced..if it does run use an amp meter and check load amps of compressor...

What is best cold weather insulation for under a mobile home?

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Asked by Wiki User

Spray foam insulation is often recommended for insulating under a mobile home in cold weather. It creates a tight seal and provides a high level of insulation to keep the area warm. Additionally, adding skirting around the perimeter of the mobile home can help prevent cold drafts from entering underneath.

How do you find the low pressure side from a window unit air condition?

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Asked by Wiki User

The low pressure side of a window unit air conditioner is typically identified by following the refrigerant tubing from the compressor, as it is the larger tubing and connects to the cooling coils at the evaporator. You can also use a manifold gauge set to measure the pressure on each side of the system to determine which side is the low pressure side.

What size wire do you run for a 5 ton outdoor air cooled condensor unit?

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Asked by Wiki User

For a 5 ton outdoor air cooled condenser unit, typically a wire size of 10 AWG (American Wire Gauge) would be suitable for both the line set and control wiring. However, it's always best to consult the manufacturer's specifications to ensure you are using the correct wire size for your specific unit and local electrical codes.

Can you wire a 120V stove fan to the 240V supply?

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Asked by Wiki User

No, it is not safe to wire a 120V fan to a 240V power supply. Doing so can damage the fan and pose a fire hazard. It's important to use appliances with the correct voltage rating to ensure proper operation and safety.

What does a heating coil in a furnace do?

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Asked by Wiki User

A heating coil in a furnace generates heat when electrical current passes through it. This heat is then used to warm up the air circulating in the furnace, which is then distributed throughout a building to provide warmth.

How do you compute BTU of a heater using CFM and output temperature?

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Asked by Wiki User

To calculate the BTU of a heater, you can use the formula: BTU = CFM x (Temperature rise in °F) x 1.08. Convert CFM to cubic feet per hour, measure the temperature difference between the air entering and exiting the heater, and multiply by 1.08, which is a constant factor. This will give you the BTU output of the heater.

Can you use muriatic acid to clean a stone fireplace?

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Asked by Wiki User

Yes, you can use muriatic acid to clean a stone fireplace, but it is important to dilute it with water before application as it is a strong acid. Test a small area first to ensure it does not damage the stone, and be sure to follow safety precautions such as wearing protective gear and working in a well-ventilated area.

How do you know if you have a heat pump?

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Asked by Wiki User

You can identify a heat pump by checking your heating and cooling system. Heat pumps provide both heating and cooling through one unit, unlike traditional furnaces or air conditioners. If your system has an outdoor unit that runs during both summer and winter, it is likely a heat pump.

How do you correct a ceiling fan wobble?

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Asked by Wiki User

  1. Ensure all the blades are tightly secured and balanced.
  2. Use a balancing kit to adjust the weights on the blades.
  3. Check that the ceiling fan is securely attached to the ceiling.
  4. If the problem persists, consider calling a professional to assess and correct the issue.

Is it smart to use an electric space heater so you can lower the thermostat of your home's central heat?

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Asked by Wiki User

Using an electric space heater can be cost-effective in the short term, but it may not be energy efficient in the long run. Additionally, it can be a safety hazard, so it's important to use it responsibly. Consider other energy-saving options like improving insulation or using a programmable thermostat instead.

How do you change the timer of the electric clothes dryer?

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Asked by Rosiegal

To change the timer on an electric clothes dryer, locate the timer dial on the control panel usually found near the top of the dryer. Turn the dial clockwise to increase the time and counterclockwise to decrease it. Adjust the timer to the desired drying time and start the dryer.

What is the purpose of the damper on forced hot water baseboard units?

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Asked by Wiki User

The damper on forced hot water baseboard units controls the flow of hot water to regulate the temperature in the room. By adjusting the damper, you can manage the amount of heat that is released from the baseboard unit, helping to maintain a comfortable temperature in your living space.

Why is your central air condenser hot?

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Asked by Wiki User

The central air condenser releases heat from inside your home to the outside. As it works to cool the air inside, the condenser unit becomes hot due to the heat exchange process. This heat is a byproduct of the refrigerant cycle, where the refrigerant absorbs heat from inside your home and releases it outside.

Is a 120V 10000 BTU air conditioner cheaper to operate than a 240V 10000 BTU?

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Asked by Wiki User

The operating cost of a 120V 10000 BTU air conditioner is typically higher than a 240V 10000 BTU due to higher current draw on the lower voltage. The 240V unit will be more energy efficient and cost-effective in the long run.

What is the breaker size for a 10 KVA electric heater?

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Asked by Wiki User

The breaker size for a 10 KVA electric heater would depend on the voltage it operates at. For example, for a 240V heater, you would need a 41.67 Amp breaker (10,000 VA / 240V = 41.67 A). It is important to consult with a licensed electrician to ensure the correct breaker size and electrical setup for your specific heater.