OEM Payne Temperature Switch for PH13NB02400GAAAA — HH18HA279
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Genuine Payne OEM part HH18HA279 — temperature switch for the Payne PH13NB02400GAAAA (payne split system heat pump 13 seer, PAYNE SPLIT SYSTEM HEAT PUMP 13 SEER, 208/230-1-60). This part opens or closes the circuit at a factory-set temperature to protect the equipment. Factory replacement verified against Carrier Corporation's own parts data for this model (Payne is a Carrier brand). Listed by the manufacturer as a critical service part for this unit. Located in: Coil And Piping.
✓ Guaranteed to fit the PH13NB02400GAAAA — or the return shipping is on us. Same-day shipping on orders before 3PM CST, from Houston, TX.
⚡ Installation: 🟡 Moderate DIY · 20–40 min · Drivers, multimeter
Kill power; match temperature rating exactly — it is a safety device. Guidance only — when unsure, hire a licensed HVAC technician.
When this part fails, you'll typically see: nuisance lockouts, unit cutting out before reaching temperature.
Will this fit my PH13NB02400GAAAA?
Yes — this part is verified against the manufacturer's parts list for the PH13NB02400GAAAA. Have a different model? Search your model number in our store; this part serves other Carrier-family units as well.
Is this an OEM part?
Genuine Carrier Corporation (Payne is a Carrier brand) OEM — the same part your unit was built with, not an aftermarket substitute.
What if it doesn't fit?
We send a prepaid return label and issue a full refund — 30 days, uninstalled parts. Installed or energized parts are non-returnable; manufacturing defects are handled under the manufacturer's warranty.
When will it ship?
Order before 3PM CST and it ships the same business day from Houston, TX.
Can I install it myself?
This part is rated Moderate DIY (20–40 min typical). Comfortable DIYers handle this with basic tools — follow the safety note above.
Can I use a different temperature rating?
No — the rating is engineered to the unit. The OEM part number guarantees the correct setpoint.
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