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OEM Carrier Furnace Transformer 120V-24V 40VA — HT01BC116 / PG8UAA0240
Carrier

OEM Carrier Furnace Transformer 120V-24V 40VA — HT01BC116 / PG8UAA0240

SKU: CARRIE-PG8UAA024065ACJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8UAA0240 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Furnace Control Transformer 120V–24V 40VA for Model PG8UAA024065ACJA (HT01BC116)

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8UAA024065ACJA gas furnace, cross-referenced under part number HT01BC116 (current OEM successor: HT680054). The transformer converts 120V line voltage down to 24V AC to power the low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this part fails, the entire control circuit goes dark: the thermostat goes blank, nothing responds to a call for heat, and the furnace will not attempt to start. Replacing it restores 24V to all downstream components immediately.

  • Specs: 120V Primary | 24V Secondary | 40VA Rating | 60 Hz | Single Phase | Foot-mount configuration | Wire lead connections with insulated female quick-connect terminals
  • OEM vs Generic: This is a genuine OEM Carrier replacement (or direct OEM-authorized successor), manufactured to factory voltage and VA tolerances. Generic transformers are often rated at loose tolerances, risking under-voltage to sensitive control boards and premature failures — especially in multi-stage furnace applications.
  • Install Difficulty: 2/5 — Shut off power at the breaker and confirm 0V with a multimeter before touching any wiring. Label or photograph all wire connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. After installation, verify 24V between R and C terminals on the control board before restoring full operation.
  • Warranty: 1-year OEM manufacturer warranty. In stock — ships same business day from our warehouse when ordered by 3 PM local time.

Compatibility: Engineered for Carrier model PG8UAA024065ACJA gas furnaces. Part number HT01BC116 has been superseded by OEM part HT680054 — both are fulfilled as the current factory replacement and are direct drop-in fits. Also replaces: HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, HT01AA012, HT01AQ110, 322666-701, B1810113. Verify your unit's data plate voltage requirements before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility 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 — HT01BC116 / PG8UAA0240?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 120V-24V 40VA — HT01BC116 / PG8UAA0240. 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 — HT01BC116 / PG8UAA0240?
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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