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OEM Carrier Control Transformer 40VA 120V-24V for PG8DAA024070ACJA
Carrier

OEM Carrier Control Transformer 40VA 120V-24V for PG8DAA024070ACJA

SKU: CARRIE-PG8DAA024070ACJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8DAA024070ACJA — 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 PG8DAA024070ACJA (HT01BC116 / HT680054)

This OEM step-down control transformer is the factory-specified replacement for the Carrier PG8DAA024070ACJA gas furnace. The transformer converts 120V line voltage down to the 24V AC that powers every low-voltage control circuit in the system — including the thermostat, gas valve, inducer relay, and control board. When it fails, the entire furnace goes silent: no thermostat response, no ignition sequence, and no fan operation. A failed transformer is one of the most common causes of a completely unresponsive furnace.

  • Specs: Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 60 Hz | Phase: Single | Mounting: Foot-mount with wire leads
  • OEM vs Generic: This is a genuine Carrier OEM unit (HT680054, the factory-authorized successor to HT01BC116) shipped in a Carrier factory-authorized parts box. Generic transformers often use thinner copper windings and lower-grade core laminations, leading to premature thermal failure — especially on systems with marginal wiring or borderline short circuits.
  • Install difficulty: 2/5 — Shut off all power at the breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label all wire connections before disconnecting. Check the 3A low-voltage fuse on the control board — a blown transformer often means a downstream short; replace the fuse and inspect wiring before restoring power.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered by 5 PM local time.

Compatibility: Direct OEM replacement for Carrier model PG8DAA024070ACJA gas furnace. Part number HT680054 is the current factory-authorized replacement for discontinued OEM part HT01BC116. Also replaces HT01BC115, HT01BB126, HT01CT120, HT01BC120, and several additional legacy Carrier/Bryant part numbers. Verify your unit's data plate voltage (120V primary) before ordering. Our fitment team is available to confirm compatibility before you buy — order with confidence.

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 PG8DAA024070ACJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8DAA024070ACJA. 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 PG8DAA024070ACJA?
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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