What are the specs for this Transformer?

The correct replacement for Carrier model PF1MNC037000AAAA 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 PF1MNC037000AAAA.

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 40VA Transformer 208/230V–24V for PF1MNC037000AAAA

Name: OEM Carrier 40VA Transformer 208/230V–24V for PF1MNC037000AAAA
Brand: Carrier
SKU: CARRIE-PF1MNC037000AAAA-TRANSFORMER-HT01CN241
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PF1MNC037000AAAA-TRANSFORMER-HT01CN241 Brand: Carrier

✓ Guaranteed to fit PF1MNC037000AAAA — or your money back. Terms

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OEM Carrier 40VA Control Transformer 208/230V to 24V for Model PF1MNC037000AAAA

This OEM Carrier transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF1MNC037000AAAA fan coil and air handler unit. The control transformer steps down line voltage (208/230V) to the 24V signal voltage that powers the thermostat, control board, and all low-voltage switching throughout the system. When this transformer fails, the entire control circuit goes dark — the thermostat loses power, the system won't respond to any call for heating or cooling, and nothing works at all.

Specs: 40VA capacity | 208/230V primary input | 24V AC secondary output | Basler Electric model BE28316007 | Genuine OEM — factory-matched to exact VA and voltage ratings
OEM vs Generic: OEM transformers are wound and insulated to Carrier's exact factory tolerances, ensuring stable 24V output under full control-circuit load. Generic units often have substandard insulation and loose VA ratings that cause voltage sag, nuisance lockouts, and premature control board failure.
Install difficulty: 2/5 — Always shut off power at the disconnect and breaker before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire stripper. Photograph all wiring connections before removal. Confirm 24V output post-installation before closing the unit.
Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed as a direct OEM replacement for the Carrier PF1MNC037000AAAA fan coil/air handler. Always verify your unit's data plate voltage (208V or 230V) matches your supply before ordering. Our parts specialists are available to confirm fitment — contact us before you order 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 40VA Transformer 208...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PF1MNC037000AAAA?

Yes. This is the factory-specified OEM transformer for the Carrier PF1MNC037000AAAA. 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 PF1MNC037000AAAA?

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 40VA Transformer 208/230V–24V for PF1MNC037000AAAA

OEM Carrier 40VA Control Transformer 208/230V to 24V for Model PF1MNC037000AAAA

Shipping Information

Return Policy

Frequently Asked Questions