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OEM Carrier Furnace Transformer 40VA 120V-24V for PG8DAA024050ACJA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V for PG8DAA024050ACJA

SKU: CARRIE-PG8DAA024050ACJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8DAA024050ACJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Furnace Control Transformer 40VA 120V-24V for Model PG8DAA024050ACJA

This OEM step-down transformer is the factory-authorized replacement for the Carrier PG8DAA024050ACJA gas furnace (OEM part number HT01BC116, superseded by HT680054). The control transformer converts 120V line power down to 24V AC to energize the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and control board. When this transformer fails, nothing in the furnace responds: the thermostat goes dark, the inducer never starts, and you have a complete no-heat lockout with no error codes. If you measure 0V AC between the R and C terminals on the control board, a failed transformer is almost always the culprit.

  • Specs: 40VA rating | 120V primary | 24V secondary | 50/60 Hz | Single phase | Foot-mount chassis | Wire lead connections with insulated female quick-connect terminals
  • OEM vs Generic: This is a genuine OEM Carrier replacement — not an aftermarket approximation. OEM transformers are wound to exact VA tolerance, ensuring your control board and gas valve receive stable 24V under full load. Undersized or off-tolerance generic transformers can cause nuisance lockouts, intermittent thermostat behavior, and premature control board failure.
  • Install difficulty: 2/5 — Shut off the furnace disconnect and confirm 0V at the transformer primary before touching any wiring. Tools needed: multimeter, Phillips screwdriver, 1/4" nut driver, needle-nose pliers. Always photograph existing wire connections before removal. Discharge any residual voltage and verify 24V output after installation before closing the panel.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Direct OEM replacement for Carrier model PG8DAA024050ACJA gas furnace. This part (HT01BC116 / HT680054) also cross-references a wide range of legacy Carrier, Bryant, and Payne furnace models. Always verify the 40VA, 120V primary, and 24V secondary specifications against your unit's data plate and existing transformer label before ordering. Need fitment confirmed? Our HVAC parts specialists verify compatibility before you buy — contact us anytime.

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 PG8DAA024050ACJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8DAA024050ACJA. 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 PG8DAA024050ACJA?
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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