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OEM Carrier Furnace Transformer 120V–24V 40VA for PG8UAA036045ACJA
Carrier

OEM Carrier Furnace Transformer 120V–24V 40VA for PG8UAA036045ACJA

SKU: CARRIE-PG8UAA036045ACJA-TRANSFORMER-HT01BC116 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier Furnace Control Transformer 120V–24V 40VA for Model PG8UAA036045ACJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8UAA036045ACJA gas furnace. The transformer converts 120V line voltage down to 24V AC to power all low-voltage control-circuit components — including the thermostat, gas valve, inducer relay, and control board. When it fails, the entire low-voltage circuit goes dead: the thermostat goes blank, the furnace won't respond to any call for heat, and no LED fault codes will display because the board itself loses power. This part ships under OEM part number HT01BC116, now fulfilled as the updated successor HT680054 — a factory-authorized direct replacement in a Carrier/Bryant factory parts box.

  • Specs: Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 50/60 Hz | Phase: Single | Connection: Wire leads with insulated female quick-connects | Dimensions: 3" L × 2-3/16" W × 2" H
  • OEM vs Generic: This is a genuine OEM Carrier transformer built to factory tolerance. Generic transformers often lack the exact mounting footprint and rated VA capacity, leading to voltage sag under load — which causes erratic thermostat behavior, nuisance lockouts, and premature control board failure.
  • Install Difficulty: 2/5 — Turn off power at the breaker and confirm voltage is zero before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before disconnecting. The transformer typically mounts with two screws on the furnace cabinet wall; wire leads connect via 1/4" insulated female quick-connects.
  • Warranty: 1-year OEM manufacturer warranty. In-stock orders ship same business day from our warehouse when placed before the cutoff.

Compatibility: Designed for the Carrier PG8UAA036045ACJA gas furnace. OEM part number HT01BC116 is superseded by HT680054 — both are covered by this listing. Also cross-references: HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, and several other legacy Carrier/Bryant part numbers. Verify your unit's data plate voltage (120V primary) before ordering. Need a fitment check? Our team confirms 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 PG8UAA036045ACJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8UAA036045ACJA. 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 PG8UAA036045ACJA?
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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