What are the specs for this Piston Kit?

The correct replacement for Goodman model ASZ130301AH 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 ASZ130301AH 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 Kit for ASZ130301AH Heat Pump — B1789865

Name: OEM Goodman Piston Kit for ASZ130301AH Heat Pump — B1789865
Brand: Goodman
SKU: GOODMAN-16215
Price: 6.95 USD
Availability: InStock

SKU: GOODMAN-16215 Brand: Goodman

$6.95 $9.25

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Goodman B1789865 Piston (Metering Device) Kit

The B1789865 is a genuine Goodman refrigerant metering piston designed for the ASZ130301AH heat pump condenser. This precision-bored orifice controls refrigerant flow into the indoor coil, ensuring correct superheat/subcooling and rated efficiency. Installing the factory-matched piston is essential after a coil or line-set change to keep the system charge and capacity within spec.

Specifications

Part number: B1789865
Type: Fixed-orifice metering piston / flow control
Compatible model: Goodman ASZ130301AH (2.5-ton heat pump)
Material: Machined brass insert
Application: Split-system heat pump condensing unit

OEM vs. Generic

The OEM Goodman piston is bore-matched to this unit's rated tonnage for correct refrigerant flow. Generic universal orifices require field drilling or bore selection and can cause improper charge, freeze-ups, or lost capacity. For guaranteed sizing, choose OEM.

Installation Difficulty

Moderate — HVAC technician recommended. Requires system recovery, brazing/flare access, and re-charge with proper superheat verification. Not a DIY-without-tools job.

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...

$6.95

Frequently Asked Questions

Does this Piston Kit fit my Goodman ASZ130301AH Heat Pump — B1789865?

Yes. This is the factory-specified OEM piston kit for the Goodman ASZ130301AH 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 ASZ130301AH 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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