Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier Transformer 40VA 120V/24V for N6D48NG480088
Carrier

OEM Carrier Transformer 40VA 120V/24V for N6D48NG480088

SKU: CARRIE-N6D48NG480088-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit N6D48NG480088 — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier Control Transformer 40VA 120V to 24V for Model N6D48NG480088

This is the OEM factory-specified control circuit transformer (part number HT01BC116) for the Carrier N6D48NG480088 packaged unit. The transformer steps down 120V line voltage to the 24V signal voltage required by your thermostat, control board, contactor coil, and all low-voltage safety circuits. When this transformer fails, the entire control circuit goes dark — your thermostat shows no response, the system will not call for heating or cooling, and diagnostic LEDs on the control board may be completely off. It is one of the first components to check when nothing works at all.

  • Specs: 40VA rated | Primary: 120V | Secondary: 24V | OEM part number HT01BC116 | Direct factory replacement
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control circuitry. Undersized or off-tolerance generic transformers can sag under load, causing nuisance lockouts, erratic thermostat behavior, and premature contactor coil failure.
  • Install difficulty: 2/5 — Disconnect power at the breaker and verify zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, multimeter, wire nuts or spade connectors. Label all wires before disconnecting. Secondary 24V terminals are low voltage but primary 120V terminals are lethal — treat them accordingly.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships the same business day from our warehouse.

Compatibility: Designed specifically for the Carrier N6D48NG480088 packaged unit. Confirm your existing transformer's VA rating and primary/secondary voltages match using the data plate inside the unit's control panel before ordering. If you're unsure of fitment, our HVAC parts specialists can verify compatibility before you purchase — same-day shipping on all confirmed 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 N6D48NG480088?
Yes. This is the factory-specified OEM transformer for the Carrier N6D48NG480088. 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 N6D48NG480088?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online