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#HVAC PARTS Services

HVAC Parts

G.A.P Mechanical: Your one-stop shop for high-quality HVAC parts in Norman, OK and beyond. We provide a wide range of components for smooth and efficient operation of your heating, ventilation, and air conditioning systems. With our extensive inventory and experienced team, we’re here to help you find the right parts for optimal performance year-round.

Evaporator and Blower:

An evaporator and a blower are both important components in an HVAC (Heating, Ventilation, and Air Conditioning) system. Let’s define each of them:

1. Evaporator: The evaporator is a heat exchanger located on the indoor side of an HVAC system. Its primary function is to absorb heat from the surrounding air and cool it down. It plays a crucial role in the cooling process of an air conditioning system. The evaporator consists of a coil that contains a refrigerant, typically in a liquid state. As warm air passes over the coil, the refrigerant absorbs the heat from the air, causing the refrigerant to evaporate and turn into a gas. This process cools down the air, which is then circulated back into the room.
2. Blower: A blower, also known as an air handler or fan, is responsible for moving air through the HVAC system. It works in conjunction with the evaporator and other components to distribute conditioned air throughout a building or space. The blower consists of a motor and a fan assembly. The motor drives the fan, which draws air from the return ducts and pushes it through the evaporator coil to be cooled or through the heat exchanger to be heated. The conditioned air is then sent to the supply ducts and distributed to various rooms or areas.

The evaporator absorbs heat from the air and cools it down, while the blower moves air through the HVAC system to distribute the conditioned air. Together, these components contribute to the cooling or heating process, depending on the mode of operation, in an HVAC system.

Expansive Valve

An expansion valve, also known as an expansion device or metering device, is a vital component in a refrigeration or
air conditioning system. Its main purpose is to regulate the flow of refrigerant into the evaporator coil.

Here's how an expansion valve works:

1. Flow control: Flow control: The expansion valve serves as a flow control device for the refrigerant. It is typically located between the condenser and the evaporator in the refrigeration cycle. The high-pressure liquid refrigerant from the condenser enters the expansion valve.
2. Pressure drop: The expansion valve creates a pressure drop in the refrigerant, causing it to transition from a high-pressure liquid to a low-pressure liquid-vapor mixture. This pressure drop occurs due to the narrow opening or restriction in the valve.
3. Metering: The expansion valve precisely meters the amount of refrigerant flowing into the evaporator coil. This metering process is important to ensure that the evaporator operates at the correct temperature and pressure. By controlling the flow rate, the expansion valve maintains the appropriate level of cooling or refrigeration effect.
4. Temperature and pressure regulation: As the low-pressure liquid-vapor mixture enters the evaporator coil, the refrigerant absorbs heat from the surrounding air, causing the remaining liquid to vaporize. This vaporization process provides the cooling effect. The expansion valve helps to regulate the evaporator's temperature and pressure, ensuring efficient heat transfer and optimal cooling performance.

Different types of expansion valves are used in HVAC and refrigeration systems, including thermostatic expansion valves (TXVs), electronic expansion valves (EEVs), and capillary tubes. Each type has its own design and operating mechanism, but they all serve the purpose of controlling the refrigerant flow and maintaining the desired cooling or refrigeration effect. An expansion valve regulates the flow of refrigerant into the evaporator coil, creates a pressure drop, meters the refrigerant, and helps maintain the proper temperature and pressure for efficient cooling or refrigeration in an HVAC or refrigeration system.

Air conditioning compressor

The air conditioning compressor is a crucial component of an air conditioning system that plays a central role in the
refrigeration cycle. It is responsible for compressing the refrigerant gas and raising its pressure, allowing it to release
heat and facilitate the cooling process.

Here's how the air conditioning compressor works:

1. Refrigerant compression: The compressor is typically located in the outdoor unit of an air conditioning system. Its primary function is to compress the low-pressure refrigerant gas from the evaporator coil, significantly increasing its pressure. This compression raises the temperature of the refrigerant, preparing it for the next stage of the cycle.
2. Energy transfer: As the compressor compresses the refrigerant gas, it also transfers energy to the refrigerant molecules, increasing their kinetic energy. This energy transfer causes the temperature of the refrigerant to rise even further.
3. Pressure and temperature increase: The compressor's action results in a significant increase in both the pressure and temperature of the refrigerant gas. The refrigerant, which started as a low-pressure gas with low temperature, transforms into a high-pressure, high-temperature gas.
4. Heat rejection: Once the refrigerant gas leaves the compressor, it flows to the condenser coil, located in the outdoor unit. In the condenser coil, the high-pressure, high-temperature refrigerant releases heat to the surrounding air, which is typically cooler than the refrigerant itself. This heat rejection process causes the refrigerant to condense back into a high-pressure liquid state.
5. Continuous cycle: After the refrigerant condenses, it continues through the rest of the refrigeration cycle, flowing to the expansion valve or metering device and then to the evaporator coil, where it absorbs heat from the indoor air and cools it down. The process repeats itself as the refrigerant returns to the compressor, restarting the cycle.

Desiccant

A desiccant is a substance used to remove moisture or humidity from the air. It is commonly employed in various applications, including air
conditioning, industrial processes, and moisture control.

Here's how a desiccant works:

1. Moisture absorption: A desiccant material has a high affinity for water molecules in the air. When exposed to moist air, the desiccant attracts and absorbs the water vapor present in the surroundings. This absorption process is often referred to as adsorption, as the water molecules adhere to the surface of the desiccant material.
2. Humidity reduction: As the desiccant absorbs moisture, it reduces the humidity level in the surrounding air. This is particularly useful in environments where moisture control is essential, such as in enclosed spaces, storage facilities, or electronic equipment rooms. By lowering the humidity, the desiccant helps prevent the growth of mold, mildew, corrosion, and other moisture-related issues.
3. Regeneration: Over time, the desiccant becomes saturated with moisture and loses its effectiveness. To restore its moisture-absorbing capacity, the desiccant undergoes a process called regeneration. Regeneration involves removing the absorbed moisture from the desiccant material, making it ready for reuse.
4. Methods of regeneration: Different types of desiccants employ various methods for regeneration. One common approach is heating the desiccant material, allowing the absorbed moisture to evaporate. This can be done by applying heat directly or by passing hot air or gas over the desiccant. Another method involves exposing the desiccant to a lower pressure environment, which causes the moisture to evaporate at a lower temperature. Some desiccants, known as "self-regenerating" desiccants, have a unique property that enables them to release the absorbed moisture when the humidity drops or when heated.

Condenser and Fan:

1. Condenser: The condenser is a vital component of an HVAC system that is usually located in the outdoor unit of the system. Its primary function is to release heat from the refrigerant gas and convert it into a high-pressure liquid. Here’s how it works:

After the refrigerant gas leaves the compressor, it enters the condenser coil, which consists of a network of tubes or fins.
The condenser coil is designed to facilitate the transfer of heat from the refrigerant to the surrounding air.
As the refrigerant flows through the condenser coil, it releases heat to the outside environment. This heat transfer process causes the refrigerant to transition from a high-pressure gas to a high-pressure liquid.
The condenser typically has a fan or fans that help draw air across the condenser coil, assisting in the heat transfer process by increasing the airflow and removing heat from the system.

2. Fan: The fan in an HVAC system, specifically in the outdoor unit, is responsible for moving air across the condenser coil to aid in the heat dissipation process. Here’s how it operates

The fan is typically located in the outdoor unit, alongside the condenser coil.
Its primary function is to draw outdoor air through the condenser coil and expel the heated air away from the system.
As the fan rotates, it creates airflow across the condenser coil, increasing the rate of heat transfer and promoting efficient cooling.
The movement of air facilitated by the fan helps dissipate the heat absorbed by the refrigerant in the evaporator coil and released in the condenser coil.

Our Clients

Joan D.

"I had an emergency situation, and they were able to come out the same day and take care of it. They are always professional, courteous, and quick to respond. G.A.P Mechanical is the only company I would ever call for HVAC services! I have worked with them for 5 years and have never been disappointed."

Michael S.

I was extremely pleased with the service I received from G.A.P Mechanical when my conditioner went out in summer. They were able to come out the same day and had it fixed within a few hours. The technicians are always on time, polite, and knowledgeable about their work.

Susan H.

G.A.P Mechanical installed a new furnace in my home. Their team was professional and did an excellent job. I highly recommend them.

Christopher P.

I had a fantastic experience with G.A.P Mechanical! They installed a new AC unit in my house, and it works perfectly - they even helped me get rebate incentives from the manufacturer. I recommend them to anyone seeking quality HVAC work.