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 40VA Transformer 120V-24V HT01BC116 for PG9MAB036080ABSA
Carrier

OEM Carrier 40VA Transformer 120V-24V HT01BC116 for PG9MAB036080ABSA

SKU: CARRIE-PG9MAB036080ABSA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB036080ABSA — 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 40VA Step-Down Transformer 120V–24V (HT01BC116) for Model PG9MAB036080ABSA

This is the OEM factory-specified control transformer for the Carrier PG9MAB036080ABSA gas furnace. The transformer steps down 120V line voltage to 24V AC, powering the low-voltage control circuit that operates your thermostat, gas valve, inducer, and control board. When this transformer fails, the entire control circuit loses power — symptoms include a completely unresponsive thermostat, no ignition attempt, and a furnace that appears totally dead even though line power is present. Note: OEM part number HT01BC116 has been superseded by HT680054, the current factory-authorized direct replacement shipped in a Carrier-branded box.

  • Specs: 40VA rating | 120V primary (input) | 24V secondary (output) | 50/60 Hz single-phase | Foot-mount style | Wire lead connections with insulated female quick-connects
  • OEM vs Generic: OEM transformers are wound to exact VA tolerances, protecting downstream components like the control board and gas valve from voltage sag. Generic units often under-deliver VA capacity under load, causing nuisance lockouts or premature board failure.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after install). Photograph all wiring connections before disconnecting. Check for a blown 3A inline fuse on the secondary side as the root cause before replacing the transformer.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day from our warehouse when ordered before 3 PM local time.

Compatibility: Direct OEM replacement for Carrier model PG9MAB036080ABSA gas furnace. Superseded part HT680054 also replaces HT01BC115, HT01BB126, HT01CT120, HT01BC120, and several other legacy Carrier/Bryant/Payne transformer part numbers. Verify your unit's control circuit voltage requirement (24V) on the data plate before ordering. Our fitment team is available to confirm compatibility — just reach out before you order.

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 PG9MAB036080ABSA?
Yes. This is the factory-specified OEM transformer for the Carrier PG9MAB036080ABSA. 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 PG9MAB036080ABSA?
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