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OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA
Carrier

OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA

SKU: CARRIE-PG9MAA036060AAKA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAA036060AAKA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer 120V–24V (HT01BC116) for Model PG9MAA036060AAKA

This OEM control transformer is the factory-specified replacement for the Carrier PG9MAA036060AAKA gas furnace. The transformer steps down 120V line voltage to 24V AC, powering the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and ignition board. When this part fails, nothing in your furnace responds: the thermostat goes dark, the system will not call for heat, and the control board receives no power. A shorted low-voltage component (bad gas valve coil, wiring fault) is the most common cause of transformer failure, so always inspect the secondary circuit before installing a replacement.

  • Specs: 40VA rating | 120V AC primary | 24V AC secondary | 60 Hz | Foot-mount configuration | Wire lead connections | Includes inline 3A fuse protection
  • OEM vs Generic: This OEM transformer is factory-wound to exact Carrier tolerances for stable 24V output under full load. Generic units often deliver inconsistent secondary voltage, causing erratic board behavior, nuisance lockouts, and premature failure of low-voltage components.
  • Install Difficulty: 2/5 — Disconnect power at the breaker and verify voltage is absent before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install and to check for secondary-side shorts before replacing). Photograph all wiring connections prior to removal. Note: OEM part HT01BC116 has been updated to successor part number HT680054 — both are fully interchangeable.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PG9MAA036060AAKA gas furnace. Also replaces legacy part numbers HT01BC116B, HT01BC115, HT01BB126, HT01BC120, and HT680054. Verify your existing transformer's VA rating and primary/secondary voltages on the data plate before ordering. Have a question about fitment? Our HVAC parts specialists confirm compatibility before you buy — order with confidence and get back to heat fast.

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 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA. 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 40VA Transformer 120V-24V HT01BC116 — PG9MAA036060AAKA?
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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