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OEM Carrier Furnace Transformer 40VA 120V-24V — HT01BC116 / PG9MAB0601
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V — HT01BC116 / PG9MAB0601

SKU: CARRIE-PG9MAB060100AASA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB0601 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Furnace Transformer 40VA 120V–24V for Model PG9MAB060100AASA (HT01BC116 / HT680054)

This OEM step-down transformer is the factory-specified replacement for the Carrier PG9MAB060100AASA gas furnace. The transformer converts 120V line voltage to the 24V AC needed to power the thermostat, control board, gas valve, and all low-voltage components in your system. When it fails, nothing in the furnace will respond — no thermostat display, no ignition sequence, and no heat. If you're seeing a completely dead control board or a system that won't respond to any thermostat command, a failed transformer is one of the first components to test.

  • Specs: Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 50/60 Hz | Phase: Single | Mounting: Foot-mount | Connection: Wire leads with insulated female quick connects
  • OEM vs Generic: This is a genuine OEM Carrier replacement (current OEM part HT680054, direct successor to HT01BC116). OEM transformers are wound to exact factory VA and voltage tolerances, protecting downstream components like the control board and gas valve from voltage irregularities that generic units can introduce.
  • Install difficulty: 2/5 — Turn off power at the breaker and confirm zero voltage before touching any wires. Photograph all wiring connections before disconnecting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Label leads before removal to avoid mis-wiring on reinstall.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered by 5 PM local time.

Compatibility & Part Note: Fits Carrier PG9MAB060100AASA gas furnaces. Original OEM part number HT01BC116 has been superseded by HT680054 — both part numbers are fulfilled by the same current OEM unit shipped in a Carrier factory-authorized box. Also cross-references: HT01BC115, HT01BC116B, HT01BB126, HT01CT120, HT01BC120. Verify your unit's control board voltage requirements before ordering. Our parts specialists are available to confirm fitment — reach out before you order if you have any questions. Order now and get same-day shipping!

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 40VA 120V-24V — HT01BC116 / PG9MAB0601?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 40VA 120V-24V — HT01BC116 / PG9MAB0601. 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 40VA 120V-24V — HT01BC116 / PG9MAB0601?
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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