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OEM Carrier 40VA Transformer 120V-24V for PG8MAA066135AAJA — HT01BC116
Carrier

OEM Carrier 40VA Transformer 120V-24V for PG8MAA066135AAJA — HT01BC116

SKU: CARRIE-PG8MAA066135AAJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit HT01BC116 — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer 120V–24V for Model PG8MAA066135AAJA (HT01BC116)

This OEM control transformer is the factory-specified replacement for the Carrier PG8MAA066135AAJA gas furnace. It steps down 120V line voltage to 24V AC, powering every low-voltage component in your system — the thermostat, gas valve, inducer relay, and control board. When this transformer fails, absolutely nothing works: the thermostat goes dark, the furnace won't respond to a call for heat, and you may blow a low-voltage fuse repeatedly. Replacing it with the correct OEM unit restores the full 40VA capacity the system was designed for. Note: OEM part number HT01BC116 has been superseded by HT680054 — this listing ships the current factory-authorized replacement.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | 60Hz | Foot-mount configuration | Wire lead connections with pre-installed insulated terminals
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generic units can cause nuisance fuse trips, erratic thermostat behavior, or premature control board failure.
  • Install Difficulty: 2/5 — Turn off power at the breaker and disconnect the furnace service switch before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Label or photograph all wire leads before disconnecting. Swap leads one-at-a-time to avoid miswiring.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse — order by 3 PM local time for guaranteed same-day dispatch.

Compatibility: Engineered for Carrier PG8MAA066135AAJA gas furnaces. Also replaces legacy part numbers HT01BC116B, HT01BC115, HT01BB126, HT01CT120, HT01BC120, and HT01AW115 across compatible Carrier, Bryant, and Payne furnace platforms. Always verify input voltage and VA rating on your unit's data plate before ordering. Our fitment team is available to confirm compatibility — contact us before you order.

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 PG8MAA066135AAJA — HT01BC116?
Yes. This is the factory-specified OEM transformer for the Carrier PG8MAA066135AAJA — HT01BC116. 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 PG8MAA066135AAJA — HT01BC116?
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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