What are the specs for this Transformer?

The correct replacement for Carrier model UPFLOW100FAUHC12A 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 UPFLOW100FAUHC12A.

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 Transformer 50VA 120/240-24V for UPFLOW100FAUHC12A

Name: OEM Carrier Transformer 50VA 120/240-24V for UPFLOW100FAUHC12A
Brand: Carrier
SKU: CARRIE-UPFLOW100FAUHC12A-TRANSFORMER-P201-35150
Price: 56.70 USD
Availability: InStock

SKU: CARRIE-UPFLOW100FAUHC12A-TRANSFORMER-P201-35150 Brand: Carrier

✓ Guaranteed to fit UPFLOW100FAUHC12A — or your money back. Terms

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OEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW100FAUHC12A

This OEM Carrier control transformer (part number P201-35150) is the factory-specified replacement for the Carrier UPFLOW100FAUHC12A upflow air handler. The transformer steps down incoming line voltage — 120, 208, or 240 VAC — to a safe 24V signal that powers the control board, thermostat circuit, and all low-voltage components. When this transformer fails, the entire control circuit goes dark: the system may show no response to thermostat calls, the blower may run continuously with no heat, or the unit may fail to start entirely.

Specs: 50VA rating | Primary: 120/208/240 VAC | Secondary: 12/24 VAC | 60 Hz single-phase | CSA listed | Factory-matched to Carrier UPFLOW100FAUHC12A control circuit requirements
OEM vs Generic: This is a genuine Carrier/Totaline factory-authorized part. Generic transformers often carry lower VA ratings or looser voltage tolerances, risking nuisance tripping, damaged control boards, or premature failure under load.
Install difficulty: 3/5 — Requires disconnecting line voltage before any work begins. Tools needed: multimeter, flathead and Phillips screwdrivers, wire stripper, needle-nose pliers. Always label and photograph all wiring connections before removal. Verify secondary voltage output after installation before restoring power to the unit.
Warranty: 1-year OEM factory warranty. Ships same business day from our warehouse.

Compatibility: Designed for the Carrier UPFLOW100FAUHC12A upflow air handler. Verify your unit's data plate confirms 50VA transformer spec and 120/208/240V primary input before ordering. Our team is available to confirm fitment — reach out before you buy if you have any questions.

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 Transformer 50VA 120...

$56.70

Frequently Asked Questions

Does this Transformer fit my Carrier UPFLOW100FAUHC12A?

Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW100FAUHC12A. 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 UPFLOW100FAUHC12A?

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 Transformer 50VA 120/240-24V for UPFLOW100FAUHC12A

OEM Carrier 50VA Control Transformer P201-35150 for Model UPFLOW100FAUHC12A

Shipping Information

Return Policy

Frequently Asked Questions