What are the specs for this Piston Kit?

The correct replacement for Goodman model ASH130181A 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 ASH130181A 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 ASH130181A Heat Pump — B1789852

Name: OEM Goodman Piston Kit for ASH130181A Heat Pump — B1789852
Brand: Goodman
SKU: GOODMAN-15920
Price: 12.95 USD
Availability: InStock

SKU: GOODMAN-15920 Brand: Goodman

$12.95 $16.95

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Goodman B1789852 Piston Kit

The Goodman B1789852 piston kit is the OEM refrigerant metering device engineered for the ASH130181A 13 SEER heat pump and compatible Goodman/Amana condensing units. This flowrator-style fixed orifice controls the flow of R-410A refrigerant into the outdoor coil, ensuring the correct pressure drop and superheat for efficient heating and cooling. Using the factory-specified piston size is critical — an incorrectly bored orifice causes poor capacity, high head pressure, or compressor stress.

OEM Part Number: B1789852
Type: Fixed-orifice piston / flowrator metering device
Refrigerant: R-410A compatible
Fits: Goodman ASH130181A and matched heat pump systems
Material: Machined brass with factory-bored orifice

OEM vs. Generic

Generic pistons ship as universal orifice sets that require you to match the bore number by hand. The genuine OEM B1789852 arrives pre-sized to Goodman's engineering spec, eliminating guesswork and protecting your compressor warranty. For a metering device, exact bore diameter is non-negotiable.

Installation Difficulty

Rating: Moderate (EPA certification required). Replacing a piston requires recovering the system refrigerant, opening the sealed circuit, swapping the orifice inside the liquid-line fitting, then evacuating and recharging. This is a job for an EPA Section 608 certified technician. Verify subcooling and superheat against the Goodman spec sheet before returning the unit to service.

Every piston kit we ship is a genuine Goodman OEM component backed by our fit guarantee.

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...

$12.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASH130181A Heat Pump — B1789852?

Yes. This is the factory-specified OEM piston kit for the Goodman ASH130181A 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 ASH130181A 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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