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OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAB060120AASA
Carrier

OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAB060120AASA

SKU: CARRIE-PG9MAB060120AASA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB060120AASA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Furnace Transformer 120V–24V 40VA for Model PG9MAB060120AASA

This OEM control circuit transformer is the factory-specified replacement for the Carrier PG9MAB060120AASA gas furnace. It steps down the 120V line voltage to 24V AC, powering every low-voltage component in your system — the thermostat, control board, gas valve, and zone controls. When this transformer fails, the entire furnace goes silent: no fan, no ignition, no response from the thermostat. If you're measuring 0V between the R and C terminals on your control board, this transformer is the most likely culprit.

  • Specs: Input 120V AC | Output 24V AC | 40VA rating | 60Hz | Foot-mount configuration | Wire lead connections with pre-installed insulated female connectors
  • OEM vs Generic: This is a factory OEM part (superseded to HT680054), manufactured to exact Carrier tolerances. Generic transformers frequently carry incorrect VA ratings or mismatched mounting footprints, leading to difficult installation and shortened service life — as confirmed by field technicians who found generic units would not mount correctly without modification.
  • Install Difficulty: 2/5 — Always shut off power at the breaker and verify zero voltage before disconnecting wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, needle-nose pliers. Photograph all wire connections before removal. 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 PG9MAB060120AASA gas furnaces. OEM part number HT01BC116, superseded by HT680054. Also cross-references HT01BC115, HT01BC120, HT01BB126, HT01CT120, and several other legacy Carrier/Bryant/Payne transformer part numbers. Always verify your unit's data plate voltage requirements 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 OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAB060120AASA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 120V-24V 40VA — PG9MAB060120AASA. 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 120V-24V 40VA — PG9MAB060120AASA?
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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