What are the specs for this Piston?

The correct replacement for Goodman model ANZ130301AC 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 ANZ130301AC Heat Pump — B1789865.

What symptoms indicate I need a new piston?

Common symptoms that indicate you need a new piston 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 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 R-410A Piston Kit for ANZ130301AC Heat Pump — B1789865

Name: OEM Goodman R-410A Piston Kit for ANZ130301AC Heat Pump — B1789865
Brand: Goodman
SKU: GOODMAN-15164
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-15164 Brand: Goodman

$6.95 $8.95

OEM Guaranteed

Same-Day Ship

30-Day Returns

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Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

The Goodman B1789865 Piston Kit is the genuine OEM metering device (flowrator) engineered for the ANZ130301AC 2.5-ton, 13 SEER Amana/Goodman heat pump. The fixed-orifice piston sets the precise refrigerant flow rate into the coil, so the correctly sized piston is essential for rated capacity, proper superheat/subcooling, and efficient operation. A worn, missing, or incorrectly sized piston is a leading cause of weak cooling, iced coils, and high head pressure.

Specifications

Part type: Fixed-orifice metering piston (flowrator) kit
OEM part number: B1789865
Refrigerant: R-410A compatible
Application: ANZ130301AC heat pump condenser/coil
Fit: Direct OEM replacement — no modification required

OEM vs. Generic

The genuine Goodman piston is bench-matched to the ANZ130301AC's rated tonnage and orifice diameter. Generic universal piston assortments require you to identify and swap the correct bore yourself, and an off-size orifice will throw off system charge and efficiency. For a guaranteed match and warranty-safe repair, the OEM B1789865 is the right choice.

Installation Difficulty

Intermediate — replacement requires recovering the refrigerant charge, opening the liquid line, swapping the piston, and evacuating/recharging the system. This is EPA Section 608 refrigerant-handling work and should be performed by a licensed HVAC 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 R-410A Piston Kit fo...

$6.95

Frequently Asked Questions

Does this Piston fit my Goodman ANZ130301AC Heat Pump — B1789865?

Yes. This is the factory-specified OEM piston for the Goodman ANZ130301AC 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 on my Goodman ANZ130301AC 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?

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

Is this piston 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?

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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