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OEM Carrier 40VA Transformer 120V–24V HT01BC116 for PG8UAA024065ABJA
Carrier

OEM Carrier 40VA Transformer 120V–24V HT01BC116 for PG8UAA024065ABJA

SKU: CARRIE-PG8UAA024065ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
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OEM Carrier 40VA Control Transformer 120V–24V (HT01BC116 / HT680054) for Model PG8UAA024065ABJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8UAA024065ABJA gas furnace. The transformer converts 120V line voltage to the 24V AC signal that powers every low-voltage control circuit in your system — including the thermostat, gas valve, inducer relay, and control board. When this component fails, the entire control circuit goes dark: the thermostat goes blank, the furnace won't respond to heat calls, and in some cases the system will blow a low-voltage fuse repeatedly. Note: OEM part number HT01BC116 has been superseded by the current factory part number HT680054 — this listing ships the current OEM replacement, which is a direct drop-in fit.

  • Specs: 120V primary | 24V secondary | 40VA rating | 60 Hz single-phase | Foot-mount configuration | Wire lead connections with pre-installed insulated connectors
  • OEM vs Generic: OEM transformers are wound to exact factory VA ratings and voltage tolerances. Undersized or off-spec generic units can starve the control board under peak load, causing nuisance lockouts or premature board failure — a repair far more costly than the transformer itself.
  • Install Difficulty: 2/5 — Turn off power at the breaker and verify 0V with a multimeter before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Photograph all wire connections before disconnecting. Check for a blown 3A low-voltage fuse on the control board and replace it simultaneously if found.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8UAA024065ABJA packaged gas furnace and cross-references OEM part numbers HT01BC116, HT01BC116B, HT01BC115, HT680054, and several related Bryant/Payne transformer part numbers. Verify 120V primary input on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — reach out before you buy if you have any questions.

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 PG8UAA024065ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8UAA024065ABJA. 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 PG8UAA024065ABJA?
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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