What are the specs for this Piston Kit?

The correct replacement for Goodman model ASH130181AA Heat Pump — B1789852 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 ASH130181AA Heat Pump — B1789852.

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 ASH130181AA Heat Pump — B1789852

Name: OEM Goodman Piston Kit for ASH130181AA Heat Pump — B1789852
Brand: Goodman
SKU: GOODMAN-15928
Price: 5.95 USD
Availability: InStock

SKU: GOODMAN-15928 Brand: Goodman

$5.95 $7.95

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Goodman B1789852 Piston Kit

The Goodman B1789852 piston (flowrator) kit is the genuine OEM refrigerant metering device for the ASH130181AA heat pump. The piston sits inside the liquid-line flowrator body and meters refrigerant into the coil at a fixed, calibrated bore size. Using the correct piston is essential to achieving proper subcooling and superheat — the wrong bore causes flooding, starving, and poor capacity.

Specifications

OEM Part Number: B1789852
Fits Model: ASH130181AA (Heat Pump)
Type: Fixed-orifice metering piston / flowrator kit
Includes: Piston and Teflon seal (verify kit contents against your flowrator body)
Function: Liquid-line refrigerant metering
Brand: Goodman (Amana compatible)

OEM vs. Generic

Piston bore sizing is matched to the exact coil tonnage and refrigerant type. An incorrectly sized generic piston will throw off charge and can cause coil freezing or high head pressure. The OEM B1789852 guarantees the factory-specified bore for this model, so the system charges and performs to spec.

Installation Difficulty

Rating: Professional / Advanced. Swapping the piston requires opening the flowrator union on the sealed refrigerant circuit — recover refrigerant first, replace the piston and seal, then evacuate and recharge to nameplate. EPA 608 certification is required. Not a DIY repair.

Genuine OEM metering accuracy with fast shipping from National HVAC Parts.

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 ASH13...

$5.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASH130181AA Heat Pump — B1789852?

Yes. This is the factory-specified OEM piston kit for the Goodman ASH130181AA Heat Pump — B1789852. 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 ASH130181AA Heat Pump — B1789852?

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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