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OEM Carrier 40VA Transformer 120V/24V for PG8JEB054070AAJA
Carrier

OEM Carrier 40VA Transformer 120V/24V for PG8JEB054070AAJA

SKU: CARRIE-PG8JEB054070AAJA-TRANSFORMER-322666-701 Brand: Carrier
✓ Guaranteed to fit PG8JEB054070AAJA — or your money back. Terms

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Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer 120V/24V for Furnace Model PG8JEB054070AAJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8JEB054070AAJA gas furnace. The transformer steps down 120V line voltage to the 24V signal that powers the thermostat, control board, gas valve, and all low-voltage safety circuits. When it fails — due to a short, wiring fault, or age — nothing in the control circuit works: the furnace will not respond to the thermostat, will not attempt ignition, and may blow the inline fuse. OEM part number 322666-701 has been superseded by HT680054, the current factory-authorized replacement.

  • Specs: 40VA rating | 120V primary | 24V secondary | 60 Hz | Single-phase | Compact 3″ × 2-2/16″ × 2″ form factor — factory fit, no modification needed
  • OEM vs Generic: This is a genuine Carrier Factory Authorized Part engineered to exact VA and voltage tolerances. Undersized or off-brand transformers can overheat under combined control-circuit load, tripping thermal protection and causing nuisance lockouts.
  • Install Difficulty: 2/5 — Disconnect power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wiring connections before removal. Typical install time: 20–30 minutes.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8JEB054070AAJA gas furnace. OEM part 322666-701 is factory-superseded by HT680054 — both part numbers are fulfilled with the current OEM unit. Verify your furnace's data plate shows 120V/24V control circuit before ordering. Our HVAC parts specialists are available to confirm fitment before you buy — order with confidence.

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 PG8JEB054070AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8JEB054070AAJA. 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 PG8JEB054070AAJA?
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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Mike Rivera
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