What are the specs for this Piston Kit?

The correct replacement for Goodman model ANZ130301AA Heat Pump — B1789865 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 ANZ130301AA Heat Pump — B1789865.

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 / Metering Kit for ANZ130301AA Heat Pump — B1789865

Name: OEM Goodman Piston / Metering Kit for ANZ130301AA Heat Pump — B1789865
Brand: Goodman
SKU: GOODMAN-15156
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-15156 Brand: Goodman

$6.95 $9.49

OEM Guaranteed

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30-Day Returns

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Texas CMBL #19328542014

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Govt POs Accepted

The Goodman B1789865 Piston Kit is a genuine OEM refrigerant metering device (flowrator piston) sized for the ANZ130301AA heat pump. The piston seats inside the liquid-line orifice housing and controls refrigerant flow into the coil, setting the correct pressure drop and superheat for efficient heat transfer in both heating and cooling modes.

Specifications

OEM Part Number: B1789865
Part Type: Fixed-orifice piston / flowrator
Compatible Model: ANZ130301AA (Goodman heat pump)
Equipment Type: Heat Pump
Factory-calibrated orifice bore for matched-system capacity
Brass body with filter screen

OEM vs. Generic

Piston sizing is everything. The B1789865 is bored to the exact orifice diameter Goodman specifies for the ANZ130301AA matched system. An incorrectly sized generic piston will starve or flood the coil, hurting capacity, efficiency, and compressor life. Because the price difference over a generic is negligible, the genuine OEM piston is always the smart buy.

Installation Difficulty

Intermediate (3/5). The piston is accessed by recovering refrigerant and opening the flare/orifice housing at the liquid line — no brazing required, but the system must be recovered, evacuated, and recharged. EPA 608 certification is required. A qualified technician can complete the swap in under an hour.

Keep your ANZ130301AA metering correctly with the factory-specified piston.

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 / Metering Ki...

$6.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ANZ130301AA Heat Pump — B1789865?

Yes. This is the factory-specified OEM piston kit for the Goodman ANZ130301AA Heat Pump — B1789865. 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 ANZ130301AA Heat Pump — B1789865?

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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