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OEM Carrier Control Transformer 40VA 120V-24V for PG9MAA048080ACKA
Carrier

OEM Carrier Control Transformer 40VA 120V-24V for PG9MAA048080ACKA

SKU: CARRIE-PG9MAA048080ACKA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAA048080ACKA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer 120V–24V for Model PG9MAA048080ACKA

This OEM control transformer is the factory-specified replacement for the Carrier PG9MAA048080ACKA gas furnace, cross-referencing original part number HT01BC116 (superseded by HT680054). The transformer steps down line voltage from 120V primary to a 24V secondary signal that powers the entire low-voltage control circuit — including your thermostat, gas valve, inducer relay, and control board. When this transformer fails, the furnace goes completely dark: the thermostat shows no power, the board won't sequence, and you get zero heat output. If you're reading 0V on the secondary side of your transformer with confirmed 120V on the primary, this is your part.

  • Specs: 40VA rating | 120V primary | 24V secondary | 50/60 Hz | Single phase | Wire lead connection type | Compact 3" L × 2-2/16" W × 2" H form factor
  • OEM vs Generic: This is a genuine OEM-equivalent Carrier replacement, manufactured to exact VA and impedance tolerances. Generic aftermarket transformers frequently run under-rated VA, causing voltage sag under load and premature control board failure — a costly second repair.
  • Install difficulty: 2/5 — Shut off the furnace disconnect and confirm zero voltage before touching any wiring. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Discharge time is not a concern with transformers (unlike capacitors), but always verify power is off.
  • Warranty & Shipping: 1-year OEM manufacturer warranty. In stock and ships same business day when ordered by 5 PM local time. Replaces legacy part numbers HT01BC116, HT01BC115, HT01BB126, HT01CT120, HT01BC120, and several additional superseded Carrier part numbers.

Compatibility: Engineered for Carrier PG9MAA048080ACKA gas furnaces and confirmed to fit a broad range of Carrier, Bryant, and Payne furnace models requiring a 40VA / 120V–24V step-down control transformer. Verify your original part number on the unit's data plate or wiring diagram before ordering. Our parts specialists are available to confirm fitment — reach us before you order and we'll make sure you get the right part the first time.

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 PG9MAA048080ACKA?
Yes. This is the factory-specified OEM transformer for the Carrier PG9MAA048080ACKA. 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 PG9MAA048080ACKA?
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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