Blog Post

What is Temperature?

  • By 7064132288
  • •
  • 28 Oct, 2019
  • •
Temperature and heat are not the same thing. This is an important distinction that needs to be made right off the bat. Heat we measure in total heat quantity to acquire total heat content. Temperature is the measure of average molecular velocity within a substance. Another way of saying it is a measure of kinetic energy within a substance. The reason why the word average is used is because some molecules are moving faster within a substance and some are moving slower. If you average out the energy within a substance, let’s say a glass of water. If you put a thermometer into a glass and it reads 80 degrees, that tells you the average molecular velocity within that substance. If you have another cup of water that measures 60 degrees, that would mean that the average molecular velocity in the 80 degree cup of water is higher. Which also means that the molecules in the 80 degree cup are moving faster than the 60 degree cup. If you take the 80 degree cup of water and compare it to an 80 degree pool they would have the same molecular velocity. This also means that they have thermal equilibrium. What that means is you would not lose heat energy if you were to put the glass and pool water together. That does not mean that they have the same amount of heat in them. The swimming pool has more heat because it has more molecules. (refer to the temperature measure graph below for a temperature measuring example)

Cold is the absence of heat. We do not measure the amount of cold like we measure amounts of heat. However we do measure a point of cold. Where we measure the point of cold is absolute zero.It’s the theoretical point at which all molecular movement stops. With heat there is no maximum amount that can be measured.


The biggest thing we can do with temperature is compare molecular velocities to each other in order to see which direction heat will move. For example, when you are saying that you are cold you are essentially saying the rate at which heat is leaving my body is making me uncomfortable. Water for example has a greater density of molecules and transfers heat faster. So water that is colder is going to transfer heat out of your body at a faster rate. Water that is warmer is going to transfer heat out of your body at a lesser rate. Heat transfer is what makes an individual feel hot or cold. If heat is moving into your body that’s hot. If heat is moving out of the body that’s cold. When there are greater differential temperatures heat moves quicker.


Total heat content of something is generally measured in BTU’s. A btu is defined by the total amount of heat required to change one pound of water by 1 degree fahrenheit. It is about the amount of heat coming off a match.


Temperature Scale

Absolute zero on the fahrenheit scale is -460 degrees. In the celsius scale it’s equivalent to -273 degrees. The kelvin scale is the Celsius version of the temperature scale. The Rankine scale is the fahrenheit version of the temperature scale in HVAC. They both start at absolute zero, and have no negative numbers. (refer to the graph below)  

The absolute zero for Rankine starts at -460 degrees fahrenheit. The absolute zero for Kelvin starts at -273 degrees Celcius. For all your HVAC needs, feel free to contact one of our techs at (256)-585-2550.

   

   Gas Furnace Equipment Components and How They are Utilized

By 7064132288 • November 26, 2019

There are many different parts that keep your furnace operating smoothly and efficiently. Below we will be breaking down the individual parts of your furnace system. We are going to be focusing on gas powered furnace components and non-geothermal heating methods. We are not going to be focusing as much on furnaces such as space heaters, but a lot of the space heaters have the same parts. We want to focus today on furnaces that are directly tied into a HVAC system. The furnace components we will be discussing will most likely belong to your standard furnace that is tied into a duct system.  

   

 Global Climate Change and How it Affects HVAC

By 7064132288 • November 26, 2019
As we progress in technologies the HVAC industry continuously is changing with new technology. This new technology provides a lot of benefits not only for the consumer, but global climate change as well. These technologies have helped increase the energy efficiency of the unit and overall systems. Below we will discuss why this is beneficial to global climate change.

Why You Should and How You Should Clean Your Dryer Vents

By 7064132288 • November 25, 2019
  Lint build up in your dryer vent is a huge fire hazard due to the combustibility of lint. Lint builds up in more places in your dryer duct system than most people realize. Here in this blog we will be giving a detailed description on how to clean, identify, and avoid these huge fire hazards.

How Long You Can Expect Your HVAC System to Last and Factors That Contribute to Shorter Lifespan of System

By 7064132288 • November 25, 2019

  Furnaces typically have a life expectancy of 15-20 years on average. Heat pumps last 16 years on average. Air conditioning units generally last 16-20 years. Tankless water heaters have a life expectancy of 20 years while a gas or electric water heater have a life expectancy that’s half that. Even though the older units were significantly less energy efficient, they malfunctioned a lot less. In the older units there were much less parts that could malfunction and the system while low in efficiency was very straightforward. Due to the lack of moving parts the older systems could take a lot more abuse from the elements and much less maintenance. They were less susceptible to dirty filters, plant overgrowth on the outside of the condenser, dirty blower wheels, dirty coils, and oversized ductwork. The newer systems save you much more money relative to the old ones. The new units require more maintenance but have the potential to last just as long as the old units while simultaneously saving you way more money on energy efficiency.

 Tips On Buying a Furnace for a Historic Home

By 7064132288 • November 25, 2019
When buying an older home there can be a lot of things to consider. If you still have the original furnace system of the home it most likely is outdated, unsafe, and very low efficiency. If you are flipping a house to resell it replacing the furnace system can increase the value of your home. When replacing a furnace system we here at A-Plus Comfort LLC are here to help advise and inform you on the multiple things to consider.

                 Why Your Furnace is Blowing Cold Air 

By 7064132288 • November 25, 2019

 When winter arrives, the last thing you need is your furnace going out. The furnace of your HVAC system provides heat throughout your entire home, so during the winter, it's very important that it’s working properly. I will explain also how to troubleshoot a furnace as well.

The Difference Between a Good and Bad Install

By 7064132288 • November 13, 2019

When performing a HVAC system install there are a lot of very important factors that must be considered each time. Experience and knowledge of HVAC systems is highly viable when doing installs or service calls.

Reasons to Use a Programmable Thermostat

By 7064132288 • November 13, 2019

Convenience is the first reason we are going to discuss why a programmable thermostat is right for you the consumer. If you like your home at a certain temperature, a programmable thermostat can ensure that it stays in the temperature range you set for it. Not only that, you can program the thermostat to make your house reach a certain temperature before you arrive home in the afternoon and before you get up in the morning.

 

  These settings are what differentiates between a normal and programmable thermostat. Because of these settings your thermostat will help you save lots of money by not running while you are away. It has been reported that the average consumer can save about 10-30% on their heating and cooling costs alone. Maximum energy saving settings are pre-programmed for your convenience. A programmable thermostat has precise temperature control with only one degree variations. Most programmable thermostats also tell you when it's time to change out the filter in your unit as well.

  A programmable thermostat is compatible with almost all systems and is super easy to install. There are many programmable thermostats to choose from according to your lifestyle. For every consumer a programmable thermostat is a cost effective and smart option. If you have kids for example and the kids get home earlier than you, sure you could trust them with your thermostat, but with a programmable one you wouldn’t have to worry about that at all. Your home will be the exact temperature that you want it at when you arrive or leave your home. With the hustle and bustle of busy life who wants to worry about the thermostat. Go out and get a programmable thermostat today or call us.

 

Zone control system in HVAC

By 7064132288 • November 13, 2019

A zone control system splits your home into multiple zones. By doing this a zone system is increasing the efficiency of your system. Also each zone can be heated or cooled independently of the other zones. For example you may like your bedroom much cooler than your living room. A zoned system can ensure that is achieved.

Why you should choose A-Plus Comfort LLC?

By 7064132288 • November 13, 2019

A-Plus Comfort LLC, is a veteran owned and operated HVAC business. Collectively our technicians and staff have over 20 years of experience, and understand that you the consumer deserve the best quality service provided. Here at A-Plus Comfort LLC, our mission statement is ensuring customer satisfaction and comfort.


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