What are the specs for this Transformer?

The correct replacement for Carrier model PH2PPB036000AA 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 PH2PPB036000AA.

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 Control Transformer HT01BD242 for PH2PPB036000AA

Name: OEM Carrier 40VA Control Transformer HT01BD242 for PH2PPB036000AA
Brand: Carrier
SKU: CARRIE-PH2PPB036000AA-TRANSFORMER-HT01BD242
Price: 47.25 USD
Availability: InStock

SKU: CARRIE-PH2PPB036000AA-TRANSFORMER-HT01BD242 Brand: Carrier

✓ Guaranteed to fit PH2PPB036000AA — or your money back. Terms

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OEM Carrier 40VA Control Transformer HT01BD242 for Model PH2PPB036000AA

This OEM control transformer (part number HT01BD242) is the factory-specified replacement for the Carrier PH2PPB036000AA heat pump system. The transformer steps down 120V line voltage to the 24V signal required by your thermostat, control board, contactor coil, and all low-voltage control circuits. When this part fails, the entire control system goes dark — the thermostat loses power, the system won't respond to calls for heating or cooling, and in some cases a blown fuse on the secondary side is the first symptom you'll notice.

Specs: 120V primary | 24V secondary | 40VA rated | Class 2 transformer | Factory-matched output for low-voltage control circuit protection
OEM vs Generic: OEM transformers like HT01BD242 are wound and rated to exact Carrier factory tolerances, ensuring stable 24V output under full load. Generic units may underperform at rated VA, causing intermittent control issues, nuisance lockouts, or premature fuse failures.
Install difficulty: 2/5 — Shut off all power to the unit at the disconnect and breaker before proceeding. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (verify 0V before touching wiring). Photograph all wiring connections before disconnecting the old transformer.
Warranty: 1-year OEM factory warranty. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PH2PPB036000AA heat pump. Always verify your unit's data plate confirms 120V primary input and 24V/40VA secondary rating before ordering. Our parts specialists are 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 40VA Control Transfo...

$47.25

Frequently Asked Questions

Does this Transformer fit my Carrier PH2PPB036000AA?

Yes. This is the factory-specified OEM transformer for the Carrier PH2PPB036000AA. 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 PH2PPB036000AA?

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 Control Transformer HT01BD242 for PH2PPB036000AA

OEM Carrier 40VA Control Transformer HT01BD242 for Model PH2PPB036000AA

Shipping Information

Return Policy

Frequently Asked Questions