What are the specs for this Transformer?

The correct replacement for Carrier model PH13NR030000AAAA 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 PH13NR030000AAAA.

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 40VA 24V for PH13NR030000AAAA

Name: OEM Carrier Transformer 40VA 24V for PH13NR030000AAAA
Brand: Carrier
SKU: CARRIE-PH13NR030000AAAA-TRANSFORMER-HT01AW229
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PH13NR030000AAAA-TRANSFORMER-HT01AW229 Brand: Carrier

✓ Guaranteed to fit PH13NR030000AAAA — or your money back. Terms

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OEM Carrier Control Transformer 40VA 24V for Model PH13NR030000AAAA

This OEM Carrier transformer (part number HT01AW229) is the factory-specified replacement for the Carrier PH13NR030000AAAA packaged heat pump unit. The control transformer steps down line voltage (120V) to the 24V AC signal that powers the entire low-voltage control circuit — including the thermostat, contactor coil, and control board. When this transformer fails, the system goes completely dark: no thermostat response, no contactor pull-in, and no heating or cooling at all.

Specs: Input: 120V AC | Output: 24V AC | 40VA rating | Factory OEM part number HT01AW229 | Direct drop-in replacement with matched mounting footprint
OEM vs Generic: The OEM HT01AW229 transformer is wound to exact Carrier specifications, ensuring stable 24V output under full control-circuit load. Generic alternatives can drift under load, causing intermittent lockouts and nuisance tripping of downstream controls.
Install difficulty: 2/5 — Always disconnect power at the disconnect box before servicing. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output post-install). Label low-voltage wiring before disconnecting from terminals.
Warranty: 1-year OEM factory warranty. Stocked in our warehouse and ships same business day when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier PH13NR030000AAAA packaged heat pump. Verify your unit's data plate and existing transformer VA and voltage ratings before ordering to confirm fitment. Our parts specialists are available to verify compatibility before you buy — no guesswork required.

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 40VA 24V...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PH13NR030000AAAA?

Yes. This is the factory-specified OEM transformer for the Carrier PH13NR030000AAAA. 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 PH13NR030000AAAA?

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 40VA 24V for PH13NR030000AAAA

OEM Carrier Control Transformer 40VA 24V for Model PH13NR030000AAAA

Shipping Information

Return Policy

Frequently Asked Questions