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OEM Carrier Furnace Transformer 120V-24V 40VA for PG8DAA036050ABJA
Carrier

OEM Carrier Furnace Transformer 120V-24V 40VA for PG8DAA036050ABJA

SKU: CARRIE-PG8DAA036050ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8DAA036050ABJA — 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 PG8DAA036050ABJA

This OEM control transformer is the factory-specified replacement for the Carrier PG8DAA036050ABJA gas furnace, originally sold under part number HT01BC116 and updated to the current OEM equivalent HT680054. The transformer is the heartbeat of your furnace's low-voltage control circuit — it steps down 120V line power to the 24V AC signal that drives your thermostat, gas valve, inducer relay, and ignition board. When this part fails, the entire control circuit goes dark: you may see a blank thermostat display, no response to a heat call, or a furnace that simply does nothing when powered on.

  • Specs: 120V AC primary input | 24V AC secondary output | 40VA rating | 60 Hz | Foot-mount configuration | Wire lead connections with pre-installed insulated female connectors
  • OEM vs Generic: OEM transformers are wound to exact factory VA tolerances, ensuring stable 24V output under full control-circuit load. Undersized or out-of-tolerance generic transformers can cause erratic board behavior, nuisance lockouts, and premature failure of downstream low-voltage components — including your gas valve and IFC board.
  • Install difficulty: 2/5 — Shut off power at the breaker and confirm zero voltage with a multimeter before beginning. Photograph all wire connections before removal. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Standard foot-mount bracket aligns to OEM mounting holes for a drop-in swap. Consider adding an in-line 3A fuse on the secondary to protect the new transformer.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our stocked warehouse.

Compatibility: Engineered for the Carrier PG8DAA036050ABJA gas furnace. This part also carries cross-reference numbers HT01BC116B, HT01BC115, HT01BB126, HT01CT120, HT01BC120, and 322666-701 — verify your unit's data plate voltage requirements (120V primary / 24V secondary, 40VA) before ordering. Our fitment team is available to confirm 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 PG8DAA036050ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8DAA036050ABJA. 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 PG8DAA036050ABJA?
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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