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OEM Carrier Furnace Transformer 120V-24V 40VA — PG8MAA060090AAJA
Carrier

OEM Carrier Furnace Transformer 120V-24V 40VA — PG8MAA060090AAJA

SKU: CARRIE-PG8MAA060090AAJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8MAA060090AAJA — or your money back. Terms

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OEM Carrier Furnace Transformer 120V-24V 40VA for Model PG8MAA060090AAJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8MAA060090AAJA gas furnace. The transformer steps down the 120V line voltage to the 24V signal used by the thermostat, control board, gas valve, and all low-voltage control circuits. When it fails, nothing in the system responds — the furnace will not call for heat, fans won't activate, and the control board receives no power. A failed transformer is often misdiagnosed as a board failure, making correct identification critical before replacement.

  • Specs: 120V primary | 24V secondary | 40VA rating | 50/60 Hz | Single phase | Wire lead connections | Replaces OEM part number HT01BC116 (superseded by HT680054)
  • OEM vs Generic: OEM transformers are wound to exact factory VA and voltage tolerances. Undersized or off-spec generic transformers can overload, blow the 3A fuse, or deliver low secondary voltage that causes erratic thermostat or board behavior.
  • Install difficulty: 2/5 — Turn off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting and confirm 24VAC output with a meter after installation.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PG8MAA060090AAJA gas furnace. This part supersedes original OEM part number HT01BC116 — the current shipping replacement is HT680054. Verify primary voltage (120V) on your unit's data plate before ordering. Our team is available to confirm fitment before you buy.

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 OEM Carrier Furnace Transformer 120V-24V 40VA — PG8MAA060090AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 120V-24V 40VA — PG8MAA060090AAJA. 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 OEM Carrier Furnace Transformer 120V-24V 40VA — PG8MAA060090AAJA?
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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