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OEM Carrier Transformer 120V-24V 40VA HT01BC116 for PG8MAA036070ACJA
Carrier

OEM Carrier Transformer 120V-24V 40VA HT01BC116 for PG8MAA036070ACJA

SKU: CARRIE-PG8MAA036070ACJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8MAA036070ACJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 120V–24V 40VA Control Transformer HT01BC116 for Model PG8MAA036070ACJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8MAA036070ACJA gas furnace. The transformer converts 120V line voltage down to 24V AC to power all low-voltage control circuit components — including the thermostat, gas valve, inducer relay, and control board. When this part fails, the furnace loses its entire control circuit: the thermostat goes blank, no call for heat is received, and nothing starts. It's often misdiagnosed as a thermostat or board failure, so always check 24V output at the R–C terminals before replacing costlier components.

  • Specs: Input: 120V AC | Output: 24V AC | VA Rating: 40VA | Connection: Wire Leads with pre-installed connectors | Mounting: Foot mount | Includes 3A fuse protection
  • OEM vs Generic: This is a genuine Carrier OEM transformer built to exact factory VA and voltage tolerances. Generic transformers often run outside rated output voltage, which can cause nuisance lockouts, premature control board failure, or erratic thermostat behavior. OEM is always the safer choice for the control circuit.
  • Install Difficulty: 2/5 — Shut off power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Photograph all wire connections before disconnecting. Swap wire leads one at a time to avoid miswiring.
  • Warranty & Shipping: 1-year OEM manufacturer warranty. In stock — ships same business day from our warehouse.

Compatibility Note: Fits Carrier model PG8MAA036070ACJA gas furnace. This part supersedes OEM part number HT01BC116; the current shipping part number is HT680054. Also cross-references HT01BC115, HT01BB126, HT01BC120, and B1810113. Verify your unit's data plate voltage (120V primary) 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 PG8MAA036070ACJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8MAA036070ACJA. 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 PG8MAA036070ACJA?
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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