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OEM Carrier Transformer EAB003 for Model FIOP300B511GA
Carrier

OEM Carrier Transformer EAB003 for Model FIOP300B511GA

SKU: carrier-transformer-fiop300b511ga Brand: Carrier
$44.95

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

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OEM Carrier Transformer EAB003 for Model FIOP300B511GA

This OEM Carrier transformer steps down line voltage to the 24V control power that runs your thermostat, contactor coil, gas valve, and circuit board. A genuine factory replacement built for Carrier model FIOP300B511GA, it delivers stable, correctly rated secondary voltage so the entire low-voltage control circuit operates reliably. A burned-out or shorted transformer is a common cause of a completely dead system—no thermostat display, no contactor pull-in, and no response on a call for heating or cooling. Made to exact OEM primary and secondary specifications, this part restores proper control voltage and protects connected components from under- or over-voltage. Installation is moderate for a qualified technician, typically 20–30 minutes: disconnect power, label and transfer the primary and secondary leads, and mount with the factory hardware. Professional installation is recommended, and checking for the short that caused the failure is advised. All orders placed before 3PM CST ship same-day from our warehouse, so you can restore full system operation fast with a genuine, precision-matched Carrier replacement.

Compatibility

This part is compatible with Carrier model FIOP300B511GA.

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 FIOP300B511GA?
Yes. This is the factory-specified OEM transformer for the Carrier Model FIOP300B511GA. 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 FIOP300B511GA?
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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