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OEM Carrier Transformer 120V-24V 40VA HT01BC116 for PG8JAA066135ADJA
Carrier

OEM Carrier Transformer 120V-24V 40VA HT01BC116 for PG8JAA066135ADJA

SKU: CARRIE-PG8JAA066135ADJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8JAA066135ADJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 120V-24V 40VA — HT01BC116 for Model PG8JAA066135ADJA

This OEM step-down control transformer (part number HT01BC116, superseded by HT680054) is the factory-specified replacement for the Carrier PG8JAA066135ADJA gas furnace.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, control board, and inducer relay. When this transformer fails, the entire control circuit goes dead: the thermostat loses power, the furnace won't respond to any call for heat, and you'll measure 0V between the R and C terminals on the control board.

  • Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Connection: Wire Leads | Mounting: Foot Mount | Includes integrated 3A fuse protection
  • OEM vs Generic: OEM transformers are wound and tested to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic units can sag under load, causing erratic thermostat behavior, nuisance lockouts, and premature control board failure.
  • Install difficulty: 2/5 — Shut off the furnace disconnect and confirm 0V at line-voltage terminals before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph all wiring connections before disconnecting. Verify 24V output at R–C terminals after installation.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Fits Carrier model PG8JAA066135ADJA gas furnace. Note: HT01BC116 has been superseded — this listing ships the current OEM replacement HT680054, a direct drop-in that replaces HT01BC116, HT01BC115, HT01BB126, HT01BC120, and related part numbers. Verify your unit's control circuit voltage 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 PG8JAA066135ADJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8JAA066135ADJA. 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 PG8JAA066135ADJA?
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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