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OEM Carrier Furnace Transformer 120V-24V 40VA for PG8JAA048090AAJA
Carrier

OEM Carrier Furnace Transformer 120V-24V 40VA for PG8JAA048090AAJA

SKU: CARRIE-PG8JAA048090AAJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8JAA048090AAJA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Furnace Control Transformer 120V-24V 40VA for Model PG8JAA048090AAJA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG8JAA048090AAJA gas furnace. It converts 120V line voltage to 24V AC, powering every low-voltage component in the system — the thermostat, gas valve, inducer relay, control board, and ignition sequence. When the transformer fails, the furnace goes completely silent: the thermostat goes blank, the board shows no activity, and no ignition attempt is made. A failed transformer is often misdiagnosed as a bad control board, making correct identification critical before replacing costlier components.

  • Specs: Primary Voltage: 120V AC | Secondary Voltage: 24V AC | VA Rating: 40VA | Frequency: 50/60 Hz | Phase: Single | Mounting: Foot mount | Connection: Wire leads with insulated female quick-connect terminals
  • OEM vs Generic: This OEM unit is factory-matched to Carrier's exact 40VA output tolerance. Generic transformers frequently deliver unstable secondary voltage, causing intermittent board lockouts, nuisance thermostat dropouts, and premature gas valve wear. The OEM part ships in a Carrier factory-authorized parts box.
  • Install difficulty: 2/5 — Always shut off 120V power at the disconnect before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (confirm 0V at primary leads before touching wiring). Photograph all wire connections before disconnecting. The transformer mounts via foot bracket and connects with color-coded wire leads — a straightforward swap for any technician or confident DIYer.
  • Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PG8JAA048090AAJA gas furnace. OEM part number HT01BC116, superseded by HT680054 — both are fully interchangeable. Also fits a wide range of Carrier, Bryant, and Payne furnaces using the 120V-24V 40VA transformer specification. Verify primary/secondary voltage and VA rating on your unit's data plate before ordering. Our parts specialists are available to confirm fitment — order today and get your furnace back online fast.

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 PG8JAA048090AAJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8JAA048090AAJA. 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 PG8JAA048090AAJA?
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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