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OEM Carrier Pressure Switch Kit HK02ZA395 & HK02ZB044 — PH1ZPA036000AA
Carrier

OEM Carrier Pressure Switch Kit HK02ZA395 & HK02ZB044 — PH1ZPA036000AA

SKU: CARRIE-PH1ZPA036000AAAA-PRESSURE_SWITCH-HK02ZA395 Brand: Carrier
✓ Guaranteed to fit PH1ZPA036000AA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier High & Low Pressure Switch Set HK02ZA395 + HK02ZB044 for Model PH1ZPA036000AAAA

This factory-matched OEM pressure switch kit includes both the high pressure switch (HK02ZA395) and low pressure switch (HK02ZB044) designed as direct replacements for the Carrier PH1ZPA036000AAAA packaged heat pump unit. Pressure switches are critical safety devices that monitor refrigerant pressure and shut the system down before compressor damage can occur. When either switch fails — or trips and won't reset — the result is a system that locks out, won't start, or short-cycles within seconds of calling for cooling or heating.

  • Specs — HK02ZA395 (High Pressure Switch): Opens at 395 PSI | Closes at 295 PSI | 240 VAC | 1/8" NPT thread | Replaces 312926-217, HK02ZA380, HK02ZA396, and other legacy Carrier part numbers
  • Specs — HK02ZB044 (Low Pressure Switch): Opens at 7 PSI | Closes at 22 PSI | 24V | 50" lead wire | OEM Carrier/Bryant/Payne application
  • OEM vs Generic: OEM pressure switches are calibrated to exact factory trip points. Aftermarket alternatives often carry wider tolerances that can allow damaging over- or under-pressure conditions to go undetected, shortening compressor life significantly.
  • Install difficulty: 2/5 — Recover refrigerant before accessing the refrigerant circuit side. De-energize the unit at the disconnect before any work. Tools needed: refrigerant recovery machine, manifold gauges, 1/4" nut driver, needle-nose pliers. Always photograph existing wiring before disconnecting leads. Verify trip-point markings match your unit's data plate before installation.
  • Warranty: 1-year OEM factory warranty on both switches. Orders ship same business day from our warehouse when placed before cutoff.

Compatibility: This kit is the OEM-specified replacement for Carrier model PH1ZPA036000AAAA packaged heat pump units. Confirm both part numbers against your unit's wiring diagram and data plate before ordering. Not sure? Our HVAC parts specialists verify fitment before you purchase — reach out via chat or phone.

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 $99
  • 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

Frequently Asked Questions

Does this Pressure Switch fit my Carrier OEM Carrier Pressure Switch Kit HK02ZA395 & HK02ZB044 — PH1ZPA036000AA?
Yes. This is the factory-specified OEM pressure switch for the Carrier OEM Carrier Pressure Switch Kit HK02ZA395 & HK02ZB044 — PH1ZPA036000AA. 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 pressure switch on my Carrier OEM Carrier Pressure Switch Kit HK02ZA395 & HK02ZB044 — PH1ZPA036000AA?
Difficulty: Medium (20–30 min)
Step 1: Turn off power. Step 2: Locate pressure switch near draft inducer. Step 3: Note tubing orientation. Step 4: Disconnect tubing and wires. Step 5: Remove screw, install new switch. Step 6: Reconnect tubing and wires, restore power.
My furnace shows a pressure switch error. What do I replace?
Furnace LED showing pressure switch error = switch not detecting draft inducer airflow. Try first: clear the rubber tubing to the switch (often clogged with condensation). If problem persists, replace the pressure switch.
Is this pressure switch compatible with Bryant or Payne too?
Many Carrier 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 Carrier pressure switch?
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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