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OEM Carrier Furnace Transformer 40VA 120V-24V — PG8JAA036110ABJA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V — PG8JAA036110ABJA

SKU: CARRIE-PG8JAA036110ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
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Texas CMBL #19328542014
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OEM Carrier 40VA Furnace Control Transformer 120V–24V for Model PG8JAA036110ABJA

This is the factory-specified OEM step-down control transformer for the Carrier PG8JAA036110ABJA 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, and control board. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, no call for heat is possible, and nothing in the system responds. A blown transformer is also often a symptom of a short elsewhere in the low-voltage wiring, so inspecting the full 24V circuit before replacing is strongly recommended.

  • Specs: 40VA rating | 120V primary / 24V secondary | 60 Hz single-phase | Wire lead connection type | Compact foot-mount housing approx. 3" L × 2-3/16" W × 2" H
  • OEM vs Generic: This OEM transformer is wound to exact Carrier factory tolerances, ensuring stable 24V output under load. Generic alternatives frequently deliver under-voltage at higher amperage draws, stressing the control board and shortening system life. OEM is the only recommended choice for 24V circuits powering gas valves and variable-speed boards.
  • Install difficulty: 2/5 — Shut off power at the breaker and confirm zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Before disconnecting, photograph all wire connections. Check for any short circuits in the 24V wiring (thermostat wires, gas valve leads) before energizing the new transformer — an unresolved short will blow the replacement immediately.
  • Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility & Part Supersession: Fits Carrier PG8JAA036110ABJA gas furnaces. OEM part number HT01BC116 has been factory-superseded by updated part number HT680054 — a direct drop-in replacement supplied in a Carrier factory-authorized parts box. Also replaces HT01BC115, HT01BB126, HT01CT120, HT01BC120, and multiple legacy part numbers. Verify your unit's data plate voltage specifications before ordering. Our team is available to confirm fitment — reach out 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 40VA 120V-24V — PG8JAA036110ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 40VA 120V-24V — PG8JAA036110ABJA. 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 40VA 120V-24V — PG8JAA036110ABJA?
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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