What are the specs for this Piston Kit?

The correct replacement for Goodman model ASZ130241AB — B1789857 is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Goodman equipment which lists the model number ASZ130241AB — B1789857.

What symptoms indicate I need a new piston kit?

Common symptoms that indicate you need a new piston kit include unusual noises, intermittent operation, complete failure to operate, or visible damage. For specific diagnostic guidance, visit nationalhvacparts.com/pages/hvac-diagnostic.

Is this piston kit compatible with Bryant or Payne systems too?

Many Goodman parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

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Goodman

OEM Goodman Piston Kit for ASZ130241AB — B1789857

Name: OEM Goodman Piston Kit for ASZ130241AB — B1789857
Brand: Goodman
SKU: GOODMAN-16152
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-16152 Brand: Goodman

$5.95 $7.95

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Texas CMBL #19328542014

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The Goodman B1789857 Piston Kit is a genuine OEM metering piston (flowrator) assembly for ASZ130241AB ASZ13-series 2-ton heat pumps. The fixed-orifice piston meters liquid refrigerant into the evaporator or condenser coil at the correct rate for the unit's rated capacity. An incorrectly sized or worn piston causes poor subcooling/superheat, reduced capacity, and higher energy use — so matching the exact factory orifice is essential.

Specifications

OEM Part Number: B1789857
Brand: Goodman
Fits Model: ASZ130241AB (2-ton / 24,000 BTU heat pump)
Equipment Type: Heat Pump
Type: Fixed-orifice metering piston / flowrator

OEM vs. Generic

This genuine Goodman OEM piston carries the precise orifice bore the ASZ13 system was engineered around. Generic pistons in the wrong bore size will mismeter refrigerant and degrade performance. OEM guarantees the correct rating for this tonnage.

Install Difficulty

Professional (3 of 5). The piston sits inside the liquid-line flare or coil distributor, so replacement requires refrigerant recovery, opening the flare connection, seating the piston with the pointed end toward the flow arrow, and re-evacuating/charging. Best handled by a licensed technician.

Shipping Information

Orders placed before 3PM CST ship same business day
Standard delivery: 2-5 business days
Express shipping available at checkout
Free shipping on orders over $75
Tracking number emailed upon shipment

Return Policy

30-day returns on unused parts in original packaging
Electrical parts (capacitors, contactors, control boards) are final sale once installed
Email info@nationalhvacparts.com to initiate a return
Refunds processed within 5-7 business days

OEM Goodman Piston Kit for ASZ13...

$5.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASZ130241AB — B1789857?

Yes. This is the factory-specified OEM piston kit for the Goodman ASZ130241AB — B1789857. It is a direct drop-in replacement that fits without modification. Always verify the model number on your equipment nameplate before ordering.

How do I replace the piston kit on my Goodman ASZ130241AB — B1789857?

Refer to your equipment service manual for model-specific steps. General approach: turn off power, photograph connections, remove old part, install new part, restore power and test. For gas components, hire a licensed technician. Email info@nationalhvacparts.com for guidance.

What symptoms mean I need a new piston kit?

Common symptoms: unusual noises, intermittent operation, complete failure, or visible damage. Visit our diagnostic hub for symptom-based troubleshooting.

Is this piston kit compatible with Bryant or Payne too?

Many Goodman parts are cross-compatible with Bryant and Payne since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across brand labels with different model numbers. To verify: check your Bryant or Payne equipment service manual for cross-compatible part numbers, or email info@nationalhvacparts.com with your model number.

Should I use OEM or aftermarket for my Goodman piston kit?

OEM recommended for reliability and warranty compatibility. OEM parts match exact factory specifications for proper fit, performance, and safety. While aftermarket alternatives cost less upfront, the risk of improper fit and reduced lifespan usually makes OEM the better value long-term.

How fast does National HVAC Parts ship?

Orders placed before 3:00 PM CST ship the same business day. Standard delivery is 2–5 business days anywhere in the continental United States. Express shipping available at checkout. We ship from Houston, TX to all 50 states. 30-day return policy on all parts.

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