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OEM Carrier Furnace Transformer 120V–24V 40VA — PG9MAB048100ABSA
Carrier

OEM Carrier Furnace Transformer 120V–24V 40VA — PG9MAB048100ABSA

SKU: CARRIE-PG9MAB048100ABSA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAB048100ABSA — or your money back. Terms

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OEM Carrier Furnace Transformer 120V–24V 40VA for Model PG9MAB048100ABSA

This OEM control-circuit transformer is the factory-specified replacement for the Carrier PG9MAB048100ABSA gas furnace. It steps down 120V line voltage to the 24V AC signal that powers every low-voltage component in your system — thermostat, gas valve, inducer relay, and control board. When this transformer fails, the furnace goes completely silent: no call-for-heat response, no inducer start, no status codes on the board. A quick voltage check between the R and C terminals (should read ~24V AC) will confirm a failed transformer before ordering.

  • Specs: 120V primary | 24V secondary | 40VA rated | Wire-lead connections | Foot-mount configuration | 60 Hz | Includes 3A fuse protection
  • OEM vs Generic: OEM units are wound to exact VA tolerance, ensuring stable 24V output under full load. Generic transformers often sag under simultaneous thermostat + gas valve + board draw, causing erratic lockouts and nuisance no-heat calls.
  • Install difficulty: 2/5 — Shut off power at the disconnect before starting. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all wire connections before removal. Note superseding OEM part number HT680054 ships in a Carrier factory-authorized parts box and is a direct drop-in replacement.
  • Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Verified fit for Carrier model PG9MAB048100ABSA gas furnace. OEM part number HT01BC116 has been updated to HT680054 — both are fully interchangeable and covered by this listing. Confirm input voltage (120V) on your unit's data plate before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before every order — call or chat today and ship it out the same business day.

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 OEM Carrier Furnace Transformer 120V–24V 40VA — PG9MAB048100ABSA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 120V–24V 40VA — PG9MAB048100ABSA. 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 OEM Carrier Furnace Transformer 120V–24V 40VA — PG9MAB048100ABSA?
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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