
Carrier EA52PH078 Piston
The Carrier EA52PH078 Piston is a precision-engineered metering device designed for refrigerant flow control in residential and light commercial HVAC applications. This specific #78 orifice piston is critical for maintaining the correct pressure drop across the evaporator coil, ensuring optimal cooling cycle efficiency. Constructed for high-pressure durability with 0.5-inch dimensions, it is a direct Carrier OEM replacement part frequently utilized in fixed-orifice systems where a thermostatic expansion valve (TXV) is not required. As a veteran technician knows, selecting the exact piston size specified by the outdoor unit’s charging chart is non-negotiable for preventing compressor slugging or evaporator starve scenarios. This HVAC piston orifice is vital for technicians performing a metering device replacement or retrofitting a piston-based AC unit. Its robust build and precise machining minimize internal friction, ensuring consistent refrigerant velocity and system reliability under varying thermal loads.
Key Benefits- Ensures accurate refrigerant metering for stable system superheat levels.
- Manufactured as a genuine Carrier original equipment manufacturer part for guaranteed fit and performance.
- Compatible with a wide range of Carrier, Bryant, and Payne air conditioning and heat pump systems.
- Small 0.03 lb lightweight design allows for simple installation within the liquid line distributor assembly.
- Engineered to withstand the high operating pressures of R-410A refrigerant systems.
How do I verify if the #78 piston size is correct for my unit?
Always refer to the rating plate or the manufacturer’s charging chart located on the outdoor service panel. The EA52PH078 represents a specific bore diameter; using an incorrectly sized piston orifice will lead to poor efficiency and potential hardware damage.
Can this piston be used in heat pump applications?
Yes, provided the heat pump outdoor unit specifications call for a #78 orifice. For linesets exceeding 100 feet, technicians should consult Carrier application guidelines regarding potential sizing adjustments.
Is this part compatible with R-22 systems?
While the EA52PH078 is primarily found in newer Puron (R-410A) equipment, compatibility is strictly determined by the capacity and orifice requirements of the specific condensing unit and coil match. Verify the required piston size before installation.
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $12.77
-65%$12.77
$4.47Carrier EA52PH078 Piston
The Carrier EA52PH078 Piston is a precision-engineered metering device designed for refrigerant flow control in residential and light commercial HVAC applications. This specific #78 orifice piston is critical for maintaining the correct pressure drop across the evaporator coil, ensuring optimal cooling cycle efficiency. Constructed for high-pressure durability with 0.5-inch dimensions, it is a direct Carrier OEM replacement part frequently utilized in fixed-orifice systems where a thermostatic expansion valve (TXV) is not required. As a veteran technician knows, selecting the exact piston size specified by the outdoor unit’s charging chart is non-negotiable for preventing compressor slugging or evaporator starve scenarios. This HVAC piston orifice is vital for technicians performing a metering device replacement or retrofitting a piston-based AC unit. Its robust build and precise machining minimize internal friction, ensuring consistent refrigerant velocity and system reliability under varying thermal loads.
Key Benefits- Ensures accurate refrigerant metering for stable system superheat levels.
- Manufactured as a genuine Carrier original equipment manufacturer part for guaranteed fit and performance.
- Compatible with a wide range of Carrier, Bryant, and Payne air conditioning and heat pump systems.
- Small 0.03 lb lightweight design allows for simple installation within the liquid line distributor assembly.
- Engineered to withstand the high operating pressures of R-410A refrigerant systems.
How do I verify if the #78 piston size is correct for my unit?
Always refer to the rating plate or the manufacturer’s charging chart located on the outdoor service panel. The EA52PH078 represents a specific bore diameter; using an incorrectly sized piston orifice will lead to poor efficiency and potential hardware damage.
Can this piston be used in heat pump applications?
Yes, provided the heat pump outdoor unit specifications call for a #78 orifice. For linesets exceeding 100 feet, technicians should consult Carrier application guidelines regarding potential sizing adjustments.
Is this part compatible with R-22 systems?
While the EA52PH078 is primarily found in newer Puron (R-410A) equipment, compatibility is strictly determined by the capacity and orifice requirements of the specific condensing unit and coil match. Verify the required piston size before installation.
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Carrier EA52PH078 Piston is a precision-engineered metering device designed for refrigerant flow control in residential and light commercial HVAC applications. This specific #78 orifice piston is critical for maintaining the correct pressure drop across the evaporator coil, ensuring optimal cooling cycle efficiency. Constructed for high-pressure durability with 0.5-inch dimensions, it is a direct Carrier OEM replacement part frequently utilized in fixed-orifice systems where a thermostatic expansion valve (TXV) is not required. As a veteran technician knows, selecting the exact piston size specified by the outdoor unit’s charging chart is non-negotiable for preventing compressor slugging or evaporator starve scenarios. This HVAC piston orifice is vital for technicians performing a metering device replacement or retrofitting a piston-based AC unit. Its robust build and precise machining minimize internal friction, ensuring consistent refrigerant velocity and system reliability under varying thermal loads.
Key Benefits- Ensures accurate refrigerant metering for stable system superheat levels.
- Manufactured as a genuine Carrier original equipment manufacturer part for guaranteed fit and performance.
- Compatible with a wide range of Carrier, Bryant, and Payne air conditioning and heat pump systems.
- Small 0.03 lb lightweight design allows for simple installation within the liquid line distributor assembly.
- Engineered to withstand the high operating pressures of R-410A refrigerant systems.
How do I verify if the #78 piston size is correct for my unit?
Always refer to the rating plate or the manufacturer’s charging chart located on the outdoor service panel. The EA52PH078 represents a specific bore diameter; using an incorrectly sized piston orifice will lead to poor efficiency and potential hardware damage.
Can this piston be used in heat pump applications?
Yes, provided the heat pump outdoor unit specifications call for a #78 orifice. For linesets exceeding 100 feet, technicians should consult Carrier application guidelines regarding potential sizing adjustments.
Is this part compatible with R-22 systems?
While the EA52PH078 is primarily found in newer Puron (R-410A) equipment, compatibility is strictly determined by the capacity and orifice requirements of the specific condensing unit and coil match. Verify the required piston size before installation.
Item is Non Cancelable / Non Returnable
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












