Same-day shipping on orders before 3PM CST · 15,000+ OEM Parts In Stock · Carrier · Bryant · ICP · Heil · Tempstar
Track Order | 1-800-NHP-HVAC | Trade Accounts

Menu

Home Shop All Account Cart
Home / OEM Carrier Furnace 24V Transformer f...
OEM Carrier Furnace 24V Transformer for Model GB1AAV036070AFJA
Carrier

OEM Carrier Furnace 24V Transformer for Model GB1AAV036070AFJA

SKU: carrier-transformer-gb1aav036070afja Brand: Carrier
$34.95

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

OEM Carrier Furnace 24V Transformer for Model GB1AAV036070AFJA

This OEM Carrier transformer supplies the low-voltage power that runs the control circuit on your GB1AAV036070AFJA gas furnace. It steps line voltage down to 24 volts to energize the thermostat, control board relays, gas valve, and safety switches. When a transformer fails or shorts, the entire low-voltage system goes dead: the thermostat screen may go blank, the furnace won't respond to heating calls, and no control sequence begins. A blown transformer is often caused by a wiring short or a stuck relay, so inspect the control circuit when replacing it. This direct replacement matches the original VA rating and primary/secondary voltages for a precise fit on the GB1AAV036070AFJA. Installation is a moderate DIY task: cut power, label and transfer the primary and secondary leads, and mount the new transformer. Most repairs take 20 to 30 minutes with basic hand tools. Restoring 24V power brings your thermostat and controls back to life quickly. Ships same-day when you order before 3PM CST.

Compatibility

This part is compatible with Carrier model GB1AAV036070AFJA.

Shipping

Same-day shipping before 3 PM CST. 30-day returns on uninstalled parts.

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 $75
  • 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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Carrier Model GB1AAV036070AFJA?
Yes. This is the factory-specified OEM transformer for the Carrier Model GB1AAV036070AFJA. 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 Model GB1AAV036070AFJA?
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