Oasis Heating, A/C & Refrigeration Blog : Archive for August, 2017

Alexandria, VA Air Conditioning FAQ: What is Refrigerant?

Saturday, August 5th, 2017

Refrigerant is a catch-all term referring to various types of chemicals used in air conditioning systems: necessary to cool the air in your home and generally make life more comfortable. In Alexandria, VA, air conditioning is vital during the heat and humidity of summer. How, exactly, does an AC use refrigerant? Let’s take a look.

For starters, we need to understand the sorts of properties refrigerant that makes the air conditioning process possible. Refrigerants need to be able to stay liquid when very cold (much below the freezing temperature of water, for example) in order to cool the air in your home. They also need to  have a boiling point below room temperature, so it is easy to have the refrigerant return to its gaseous form. In order to understand why these characteristics are important, you need to understand the refrigerant cycle.

In basic terms, the process works like this:

  • Gaseous refrigerant enters the AC unit’s compressor, which increases the pressure and raises the gas’s temperature.
  •  The refrigerant passes through condenser coils, dissipating the heat and returning the refrigerant to a liquid state (though keeping it under high pressure).
  • The refrigerant enters an expansion valve and passes through a set of evaporator coils. It evaporates back into gaseous form and cools the air around the coils in the process.
  • A fan blows across the coils, and the refrigerant absorb the heat from the air blowing over it, creating cool air which then passes through the duct system and into your house.
  • The refrigerant gas returns to the compressor and the process repeats itself.

Theoretically, this all takes place in a closed system, which retains the refrigerant indefinitely as it cycles through the process. In reality, however, leaks are possible. A loss of refrigerant impacts your system’s efficiency and the leak will need to be located and sealed by a licensed professional. For air conditioning service in Alexandria, VA, the technicians at OASIS Heating, Air Conditioning & Refrigeration, Inc. are here to help. We can recharge your refrigerant, identify and seal and leaks, and otherwise keep your system performing at its peak. Contact us today to set up an appointment.

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Why Am I Not Receiving Enough Hot Water for My Home?

Thursday, August 3rd, 2017

You depend on a supply of hot water in your home every day for numerous tasks. It’s hard to take a shower each morning without hot water, and getting cooking and cleaning done is tough and sometimes impossible when there’s insufficient hot water coming from the water heater. If you notice that your home is running out of hot water sooner than it used to, call on water heater technicians to find out what is wrong and offer you options to remedy it.

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My Water Heater Is Rusty: Should I Replace It?

Tuesday, August 1st, 2017

Rust is never a good sign—on anything. Although you might expect to notice rust on your water heater at some point because it has water in contact with metal, rust and other types of corrosion are generally rare for a water heater until it’s near the end of its service life. The inside of the tank is glass-lined to keep water out of contact with the tank walls, and there are other precautions in place to defend against rust.

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