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OEM Carrier Transformer 120V-24V 40VA HT01BC116 — PG9MAB036080LBSA
Carrier

OEM Carrier Transformer 120V-24V 40VA HT01BC116 — PG9MAB036080LBSA

SKU: CARRIE-PG9MAB036080LBSA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB036080LBSA — 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 PG9MAB036080LBSA

This OEM step-down control transformer is the factory-specified replacement for the Carrier PG9MAB036080LBSA gas furnace. It converts 120V AC line voltage down to 24V AC to power the low-voltage control circuit — including the thermostat, control board, gas valve, and all safety switches. 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 the control board shows no signs of life. A shorted low-voltage component (such as a faulty zone valve or wiring fault) is the most common cause of transformer failure, so always inspect the secondary circuit before installing a replacement.

  • Specs: Primary 120V AC | Secondary 24V AC | 40VA rated | Foot-mount configuration | Wire lead connections | 60 Hz
  • OEM vs Generic: This OEM unit is built to Carrier's exact VA rating and voltage tolerance specs. Generic transformers often use undersized cores that run hot under normal furnace loads, accelerating insulation breakdown and shortening service life — as one verified buyer noted, generic units may not even mount correctly without modification.
  • Install difficulty: 2/5 — Shut off power at the breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter, wire stripper. Photograph all existing wiring before disconnecting. Check secondary voltage (R-to-C terminals on the control board) after install to confirm 24–28V AC output.
  • Warranty: 1-year OEM factory warranty. In-stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier PG9MAB036080LBSA gas furnaces. Note: OEM part number HT01BC116 has been superseded by Carrier part HT680054 — this listing ships the current factory-authorized replacement. Also cross-references HT01BC115, HT01BC116B, HT01BB126, HT01BC120, and HT01AW115. Verify primary voltage on your unit's data plate before ordering. Our team is available to confirm fitment — just 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 Transformer 120V-24V 40VA HT01BC116 — PG9MAB036080LBSA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Transformer 120V-24V 40VA HT01BC116 — PG9MAB036080LBSA. 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 Transformer 120V-24V 40VA HT01BC116 — PG9MAB036080LBSA?
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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