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OEM Carrier Transformer 40VA 120V/24V for N6A48NG481452
Carrier

OEM Carrier Transformer 40VA 120V/24V for N6A48NG481452

SKU: CARRIE-N6A48NG481452-TRANSFORMER-HT01BC116 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V/24V for Model N6A48NG481452

This OEM replacement transformer (part number HT01BC116) is the factory-specified control circuit transformer for the Carrier N6A48NG481452 packaged unit. Its primary function is to step down 120V line voltage to the 24V signal required by the thermostat, contactor coils, and control board. When this transformer fails, the entire control circuit goes dead — the thermostat loses power, nothing responds to a call for heating or cooling, and the system appears completely non-functional despite having line voltage present.

  • Specs: 40VA rated | 120V primary / 24V secondary | Class 2 output | OEM part number HT01BC116 | Direct factory-matched replacement
  • OEM vs Generic: This OEM transformer is wound to exact factory VA and impedance specifications, ensuring reliable 24V output under full control-circuit load. Generic transformers with undersized VA ratings can sag voltage under load, causing erratic board behavior or contactor chatter.
  • Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to confirm 24V output after installation. Always photograph wiring before disconnecting leads from the primary and secondary terminals.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our warehouse.

Compatibility: Engineered as a direct OEM replacement for the Carrier N6A48NG481452 packaged unit. Verify your existing transformer's VA rating and primary/secondary voltages on the unit data plate or component label before ordering. Our fitment team is available to confirm compatibility prior to purchase. Order now — this part ships today.

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 $75
  • 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 N6A48NG481452?
Yes. This is the factory-specified OEM transformer for the Carrier N6A48NG481452. 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 N6A48NG481452?
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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