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OEM Carrier Transformer 40VA 208/230V–24V for PF1MNC018000AAAA
Carrier

OEM Carrier Transformer 40VA 208/230V–24V for PF1MNC018000AAAA

SKU: CARRIE-PF1MNC018000AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF1MNC018000AAAA — or your money back. Terms

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier 40VA Control Transformer HT01CN241 for Model PF1MNC018000AAAA

This is the genuine OEM Carrier control transformer (part number HT01CN241), the factory-specified replacement for the Carrier PF1MNC018000AAAA air handler. The transformer steps down line voltage (208/230V primary) to 24V on the secondary side, powering the low-voltage control circuit that operates your thermostat, contactor coils, and all system controls. When this transformer fails, the entire control circuit goes dead — symptoms include a completely unresponsive thermostat, no call-for-heat or cool, tripped circuit breakers on the low-voltage side, or a burned smell near the air handler cabinet.

  • Specs: 208/230V Primary | 24V Secondary | 40VA rated | OEM part number HT01CN241 | Factory Authorized Parts™ specification
  • OEM vs Generic: Genuine Carrier OEM transformers are wound to exact VA and voltage tolerances, protecting downstream components like the control board and contactor coils. Undersized or off-tolerance aftermarket transformers are a leading cause of repeat control board failures.
  • Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter. Photograph all low-voltage wire connections before removal. Verify 24V output at secondary terminals before reassembly.
  • Warranty: 1-year OEM manufacturer warranty. In stock and ships same business day from our warehouse when ordered by cutoff time.

Compatibility: Direct OEM replacement for Carrier model PF1MNC018000AAAA air handler. Verify your unit's data plate shows a 208/230V primary and 24V secondary 40VA transformer requirement before ordering. Our fitment team is available to confirm compatibility — just reach out before you buy.

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 PF1MNC018000AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF1MNC018000AAAA. 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 PF1MNC018000AAAA?
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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Mike Rivera
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