What are the specs for this Transformer?

The correct replacement for Carrier model PF1MNC019T00AAAA 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 PF1MNC019T00AAAA.

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 208/230V–24V 40VA for PF1MNC019T00AAAA

Name: OEM Carrier Transformer 208/230V–24V 40VA for PF1MNC019T00AAAA
Brand: Carrier
SKU: CARRIE-PF1MNC019T00AAAA-TRANSFORMER-HT01CN241
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PF1MNC019T00AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

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OEM Carrier Transformer 208/230V–24V 40VA for Model PF1MNC019T00AAAA

This OEM Carrier transformer (part HT01CN241) is the factory-specified 40VA step-down transformer for the Carrier PF1MNC019T00AAAA fan coil / air handler unit. Its sole job is to convert line voltage (208/230V primary) down to the 24V signal voltage that powers your thermostat, control board, and every low-voltage relay in the system. When this transformer fails, the entire control circuit goes dark — the thermostat goes blank, the system won't respond to calls for heating or cooling, and no fault codes will appear because there is no power to generate them.

Specs: 208/230V primary input | 24V secondary output | 40VA power rating | Direct OEM fit for Carrier PF1MNC019T00AAAA — no splicing or adapter harnesses required
OEM vs Generic: The OEM HT01CN241 is wound and insulated to Carrier's exact thermal and electrical specifications. Generic 40VA transformers frequently run hot at sustained load, degrading insulation and causing nuisance failures. OEM is the only choice for a long-term fix.
Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, a multimeter to confirm 24V output after install. Label or photograph all wiring before disconnecting. Total job time is typically 20–40 minutes for an experienced tech.
Warranty: 1-year OEM manufacturer's warranty. In-stock orders ship same business day from our warehouse.

Compatibility: Engineered for the Carrier PF1MNC019T00AAAA fan coil/air handler. Confirm your unit's data plate shows a 208/230V primary transformer requirement before ordering. Not sure? Our fitment team verifies compatibility before you buy — reach out and we'll confirm the right part for your system.

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 208/230V...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PF1MNC019T00AAAA?

Yes. This is the factory-specified OEM transformer for the Carrier PF1MNC019T00AAAA. 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 PF1MNC019T00AAAA?

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 208/230V–24V 40VA for PF1MNC019T00AAAA

OEM Carrier Transformer 208/230V–24V 40VA for Model PF1MNC019T00AAAA

Shipping Information

Return Policy

Frequently Asked Questions