What are the specs for this Transformer?

The correct replacement for Carrier model GB1AAV036055AAJA is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Carrier equipment which lists the model number GB1AAV036055AAJA.

Is this transformer compatible with Bryant or Payne systems too?

Many Carrier parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Carrier

OEM Carrier 40VA Transformer 120V-24V for GB1AAV036055AAJA

Name: OEM Carrier 40VA Transformer 120V-24V for GB1AAV036055AAJA
Brand: Carrier
SKU: CARRIE-GB1AAV036055AAJA-TRANSFORMER-HT01BC116
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-GB1AAV036055AAJA-TRANSFORMER-HT01BC116 Brand: Carrier

✓ Guaranteed to fit GB1AAV036055AAJA — or your money back. Terms

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OEM Carrier 40VA Control Transformer for Model GB1AAV036055AAJA

This OEM control transformer (Part# HT01BC116) is the factory-specified replacement for the Carrier GB1AAV036055AAJA gas furnace. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, and all low-voltage control circuit components. When the transformer fails, the entire control circuit goes dead — the thermostat display may go blank, the system won't respond to any calls for heat or cooling, and no fault codes will appear on the board because there's simply no power to operate it.

Specs: 40VA rating | 120V primary / 24V secondary | OEM Part# HT01BC116 | Factory-matched output for Carrier GB1AAV036055AAJA control circuits
OEM vs Generic: OEM transformers deliver stable, regulated 24V output within tight tolerances. Generic units often produce voltage spikes or sag under load, which can damage sensitive control boards and thermostats over time — making the OEM choice the smarter long-term investment.
Install difficulty: 2/5 — Shut off all power to the unit before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter. Label or photograph all low-voltage wiring connections before disconnecting the old transformer.
Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our stocked warehouse.

Compatibility: Engineered and tested for the Carrier GB1AAV036055AAJA gas furnace. Verify your existing transformer's VA rating and primary/secondary voltages on the unit's data plate or wiring diagram before ordering. Not sure it fits? Our HVAC parts specialists confirm fitment before you buy — no guesswork, no returns.

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

OEM Carrier 40VA Transformer 120...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier GB1AAV036055AAJA?

Yes. This is the factory-specified OEM transformer for the Carrier GB1AAV036055AAJA. 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 GB1AAV036055AAJA?

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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OEM Carrier 40VA Transformer 120V-24V for GB1AAV036055AAJA

OEM Carrier 40VA Control Transformer for Model GB1AAV036055AAJA

Shipping Information

Return Policy

Frequently Asked Questions