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Carrier

OEM Carrier Transformer HT01BL245 for Model CH14NA04200GAAAA

SKU: carrier-transformer-ch14na04200gaaaa Brand: Carrier
$34.95

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

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OEM Carrier Transformer HT01BL245 for Model CH14NA04200GAAAA

This genuine Carrier transformer (HT01BL245) steps line voltage down to the 24V control power that runs the thermostat, contactor coil, and control board in your CH14NA04200GAAAA unit. When a transformer fails or shorts, you lose all low-voltage control: the thermostat goes dark, the contactor won't pull in, and the system won't start at all. This OEM 40VA, 208/230V primary to 24V secondary transformer matches the factory specification for the CH14NA04200GAAAA, supplying the correct VA capacity so the control circuit and coil are properly powered. A qualified technician can install it in about 20-30 minutes: disconnect power, confirm the secondary fault is cleared, photograph the primary and secondary leads, transfer them to the matching terminals, and mount the new transformer. Basic hand tools only. Each transformer is genuine Carrier stock and tested for correct output. Order before 3PM CST and your part ships the same day so you can bring the control circuit back online fast. Install the correct OEM transformer to restore reliable 24V control power.

Compatibility

This part is compatible with Carrier model CH14NA04200GAAAA.

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 CH14NA04200GAAAA?
Yes. This is the factory-specified OEM transformer for the Carrier Model CH14NA04200GAAAA. 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 CH14NA04200GAAAA?
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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