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OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA048080AEKA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA048080AEKA

SKU: CARRIE-PG9MAA048080AEKA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAA048080AEKA — 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 PG9MAA048080AEKA

This OEM step-down transformer is the factory-specified replacement for the Carrier PG9MAA048080AEKA gas furnace. The transformer converts 120V line voltage down to the 24V AC signal that powers every low-voltage component in the system — the thermostat circuit, gas valve, inducer relay, and control board. When this transformer fails, the furnace goes completely dead: no thermostat response, no ignition attempt, and no error codes on the board. It is often the first component to inspect when nothing on the furnace responds to a call for heat.

  • Specs: 40VA capacity | 120V primary | 24V secondary | 60 Hz single-phase | Compact foot-mount design | Wire lead connections with insulated female quick-connects
  • OEM vs Generic: This is a genuine OEM Carrier transformer built to exact factory VA and voltage tolerances. Generic units frequently run outside rated VA capacity, causing premature failure of the control board and other low-voltage components — OEM is the only recommended choice for long-term reliability.
  • Install difficulty: 2/5 — Shut off power at the breaker and verify with a multimeter before touching any terminals. Tools needed: flathead and Phillips screwdriver, needle-nose pliers, multimeter. Label all wire connections before removal. Measure 24V between the R and C terminals on the control board after installation to confirm correct operation.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse.

Compatibility: Direct OEM replacement for Carrier model PG9MAA048080AEKA gas furnace. This part supersedes legacy OEM part number HT01BC116 and is compatible across a wide range of Carrier, Bryant, and Payne furnaces using a 40VA 120V/24V transformer. Verify your unit's data plate voltage and VA rating before ordering. Have a compatibility question? Our HVAC parts team confirms fitment 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 OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA048080AEKA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA048080AEKA. 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 OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA048080AEKA?
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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