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OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG8DAA036070ABJA
Carrier

OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG8DAA036070ABJA

SKU: CARRIE-PG8DAA036070ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8DAA036070ABJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Step-Down Transformer 120V–24V for Model PG8DAA036070ABJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8DAA036070ABJA gas furnace. The transformer converts 120V line voltage down to 24V AC to power all low-voltage control circuit components — including the thermostat, control board, gas valve, and inducer relay. When the transformer fails, the entire control circuit goes dead: the thermostat goes blank, the furnace won't respond to any call for heat, and no fault codes will appear on the control board because there is no power to drive them. If you measure 0V between the R and C terminals on your control board, a failed transformer is the most likely culprit.

  • Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Mounting Type: Foot mount | Connection: Wire leads with insulated female connectors | OEM Part: HT01BC116 (superseded by HT680054)
  • OEM vs Generic: This OEM-spec transformer is wound to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic transformers can sag below 24V when the control circuit is fully loaded, causing intermittent lockouts, nuisance trips, and premature control board failure.
  • Install Difficulty: 2/5 — Turn off the furnace disconnect switch and confirm voltage is zero before proceeding. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Photograph existing wiring connections before removing the old transformer. Reconnect leads to matching terminals and verify 24V output at R–C before restoring power.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed for the Carrier PG8DAA036070ABJA gas furnace. This part also cross-references to Bryant, Payne, and ICP family furnaces sharing the same 120V–24V 40VA transformer specification. Always verify your existing transformer's input voltage, output voltage, and VA rating on the unit data plate before ordering. Our team is available to confirm fitment — just reach out before you order.

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 40VA Transformer 120V-24V HT01BC116 — PG8DAA036070ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG8DAA036070ABJA. 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 40VA Transformer 120V-24V HT01BC116 — PG8DAA036070ABJA?
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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