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OEM Carrier Transformer 120V-24V 40VA for PG8JAA048090ABJA
Carrier

OEM Carrier Transformer 120V-24V 40VA for PG8JAA048090ABJA

SKU: CARRIE-PG8JAA048090ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8JAA048090ABJA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 120V–24V 40VA for Model PG8JAA048090ABJA

This OEM Carrier step-down transformer is the factory-specified control circuit replacement for the Carrier PG8JAA048090ABJA gas furnace. The transformer converts 120V line voltage down to the 24V signal voltage required to power the thermostat circuit, control board, gas valve, and all low-voltage components. When this part fails, the entire control circuit goes dark — nothing responds: no ignition sequence, no fan, no thermostat communication. It is often the first component to diagnose when your furnace appears completely dead with no error codes displayed.

  • Specs: 120V primary | 24V secondary | 40VA rated | Wire lead connections | Drop-in OEM fit for Carrier PG8JAA048090ABJA | Replaces OEM part# HT01BC116 (current replacement: HT680054)
  • OEM vs Generic: This OEM transformer is wound and rated to exact Carrier factory tolerances. Generic transformers frequently run outside rated VA capacity under real load conditions, risking control board damage and repeat failures.
  • 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 after install). Photograph all wire connections before disconnecting. This is a straightforward swap accessible at the furnace control panel.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Engineered for the Carrier PG8JAA048090ABJA 80% AFUE packaged gas furnace. Always verify primary voltage (120V) and VA rating (40VA) against your unit's data plate before ordering. If you are unsure of fitment, our HVAC parts specialists will confirm compatibility before you purchase — same-day shipping available on all in-stock orders.

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 PG8JAA048090ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8JAA048090ABJA. 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 PG8JAA048090ABJA?
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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