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 Furnace Transformer 40VA 120V-24V — PG9MAA060140ADKA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA060140ADKA

SKU: CARRIE-PG9MAA060140ADKA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG9MAA060140ADKA — 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 Furnace Control Transformer 120V–24V for Model PG9MAA060140ADKA

This OEM Carrier step-down transformer is the factory-specified replacement for the Carrier PG9MAA060140ADKA gas furnace. The transformer converts 120V line voltage to the 24V AC low-voltage signal that powers your thermostat, gas valve, inducer relay, and control board. When the transformer fails, the entire low-voltage control circuit goes dead — you'll see no thermostat response, no inducer startup, and no heat output whatsoever. This is one of the most commonly overlooked components during a no-heat diagnostic.

  • Specs: 40VA rating | 120V primary / 24V secondary | 50/60 Hz | Single phase | Wire lead connections | Compact 3" L × 2-2/16" W × 2" H footprint
  • OEM vs Generic: This OEM transformer ships in a Carrier factory-authorized parts box and meets exact VA and voltage output tolerances. Generic transformers can output slightly off-spec 24V, stressing control boards and gas valves. OEM is always the safer choice for furnace control circuits.
  • Install difficulty: 2/5 — Turn off power at the disconnect before starting. Tools needed: flathead screwdriver, needle-nose pliers, multimeter. Label all wire leads before disconnecting. Check voltage between C and R terminals on the control board after installation to confirm 24V output.
  • Warranty: 1-year OEM manufacturer warranty. In-stock orders ship the same business day from our warehouse.

Compatibility & Cross-Reference: Fits Carrier model PG9MAA060140ADKA and is the current OEM successor (HT680054) to legacy part number HT01BC116. Also cross-references HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, HT01AA012, and 322666-701. Verify your unit's data plate voltage rating before ordering. Have a question? Our HVAC parts team confirms fitment before you buy — call or chat now.

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 40VA 120V-24V — PG9MAA060140ADKA?
Yes. This is the factory-specified OEM transformer for the Carrier OEM Carrier Furnace Transformer 40VA 120V-24V — PG9MAA060140ADKA. 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 40VA 120V-24V — PG9MAA060140ADKA?
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