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OEM Carrier Furnace Transformer 40VA 120V-24V for PG8JEB066090AAJA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V for PG8JEB066090AAJA

SKU: CARRIE-PG8JEB066090AAJA-TRANSFORMER-322666-701 Brand: Carrier
✓ Guaranteed to fit PG8JEB066090AAJA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Furnace Transformer 40VA 120V-24V for Model PG8JEB066090AAJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8JEB066090AAJA gas furnace. The transformer converts 120V line voltage down to 24V to power the low-voltage control circuit — including your thermostat, gas valve, inducer relay, and control board logic. When it fails, nothing in the low-voltage circuit responds: the thermostat goes blank, the furnace won't call for heat, and the system appears completely dead even with 120V line power present.

  • Specs: 40VA rating | 120V primary / 24V secondary | 60Hz | Step-down design | OEM part number 322666-701 | Also cross-references HT01BC115C, 4600-01V04K28
  • OEM vs Generic: This is a genuine Factory Authorized Part built to Carrier's exact VA and voltage tolerance specifications. Generic transformers often under-deliver VA capacity under load, causing nuisance lockouts and accelerated control board wear.
  • Install difficulty: 2/5 — Shut off all power to the furnace at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all 24V secondary wires before disconnecting. Verify 24VAC output at secondary terminals after installation before closing the panel.
  • Warranty: 1-year OEM factory warranty. In stock and ships the same business day from our warehouse.

Compatibility: Designed for Carrier model PG8JEB066090AAJA gas furnace. Verify primary voltage (120V) and VA rating (40VA) on your existing transformer's label before ordering. Cross-reference part numbers: HT01BC115C, 4600-01V04K28, J1841. Note that the current active Carrier successor part is HT680054. Have a fitment question? Our HVAC parts specialists confirm compatibility before you order — call or chat today.

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 Transformer fit my Carrier PG8JEB066090AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8JEB066090AAJA. 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 transformer on my Carrier PG8JEB066090AAJA?
Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Photo wiring connections. Step 3: Disconnect wires from old transformer. Step 4: Remove mounting hardware. Step 5: Install new transformer, reconnect wires matching voltage ratings. Step 6: Verify 24V output with multimeter.
My thermostat has no power. What failed?
Thermostat with no display = failed 24V transformer (or blown control board fuse). Check the 3A/5A fuse on the control board first ($1–$5 fix). If fuse is good but no 24V output from transformer, replace transformer.
Is this transformer 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 transformer?
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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