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OEM Carrier 40VA Transformer HT01BC117 for PG9YAB048080AAAA
Carrier

OEM Carrier 40VA Transformer HT01BC117 for PG9YAB048080AAAA

SKU: CARRIE-PG9YAB048080AAAA-TRANSFORMER-HT01BC117 Brand: Carrier
✓ Guaranteed to fit PG9YAB048080AAAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier 40VA Control Transformer HT01BC117 for Model PG9YAB048080AAAA

This is the genuine OEM replacement control transformer for the Carrier PG9YAB048080AAAA gas furnace. The transformer steps down 120V line voltage to the 24V AC signal that powers your thermostat, control board, gas valve, and all low-voltage control circuitry. When this part fails, nothing in the system responds — the thermostat goes blank, the furnace won't fire, and no error codes are displayed because the board itself has no power. A failed transformer is often misdiagnosed as a bad control board, making it one of the most important parts to verify first.

  • Specs: 120V primary | 24V secondary | 40VA rated | Direct OEM replacement for part number HT01BC117 | Factory-matched output for Carrier low-voltage control circuits
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by the Carrier control board. Undersized or off-tolerance generics can cause nuisance tripping of the transformer's internal thermal fuse, intermittent faults, and premature control board damage.
  • Install Difficulty: 2/5 — Shut off all power at the breaker and disconnect switch before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Verify 24V output at secondary terminals before reconnecting control wiring. Always photograph existing wiring before removal.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PG9YAB048080AAAA packaged gas furnace. Cross-reference your existing part number (HT01BC117) and confirm 120V/24V/40VA ratings on the data plate before ordering. Have questions about fitment? Our HVAC parts specialists verify compatibility before you buy — contact us before placing your 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 PG9YAB048080AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PG9YAB048080AAAA. 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 PG9YAB048080AAAA?
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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