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OEM Carrier Furnace Transformer 40VA 120V-24V for PG9MAB060100LBSA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V for PG9MAB060100LBSA

SKU: CARRIE-PG9MAB060100LBSA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB060100LBSA — or your money back. Terms

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OEM Carrier Furnace Transformer 40VA 120V–24V for Model PG9MAB060100LBSA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG9MAB060100LBSA gas furnace. The transformer converts 120V line voltage to 24V AC to power the entire low-voltage control circuit — including the thermostat, control board, gas valve, and zone controls. When this transformer fails, your furnace will appear completely unresponsive: the thermostat goes dark, nothing calls for heat, and no error codes are displayed because the control board itself has lost power. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before replacing more expensive components.

  • Specs: Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 60 Hz | Phase: Single | Mounting: Foot-mount | Connection: Wire leads with insulated female quick-connects
  • OEM vs Generic: This OEM transformer is wound to exact Carrier factory tolerances, ensuring stable 24V output under load. Generic alternatives frequently deliver slightly off-voltage output (22–26V), which can cause erratic thermostat behavior, nuisance lockouts, or premature control board failure.
  • Install difficulty: 2/5 — Shut off power at the breaker and confirm zero voltage with a multimeter before touching any wiring. Photograph all wire connections before disconnecting the old transformer. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Note: OEM part number HT01BC116 has been superseded by HT680054 — both are the same factory-spec unit.
  • Warranty: 1-year OEM manufacturer warranty. In-stock and ships same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Designed for the Carrier PG9MAB060100LBSA gas furnace. Supersedes OEM part numbers HT01BC116, HT01BC116B, HT01BC115, HT01BB126, HT01CT120, and HT01BC120. Always verify your unit's data plate voltage rating before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us anytime.

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 PG9MAB060100LBSA?
Yes. This is the factory-specified OEM transformer for the Carrier PG9MAB060100LBSA. 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 PG9MAB060100LBSA?
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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