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OEM Carrier Transformer 40VA 208/240V–24V for PY1PPB036090ABAA
Carrier

OEM Carrier Transformer 40VA 208/240V–24V for PY1PPB036090ABAA

SKU: CARRIE-PY1PPB036090ABAA-TRANSFORMER-HT01BD209 Brand: Carrier
✓ Guaranteed to fit PY1PPB036090ABAA — or your money back. Terms

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Texas CMBL #19328542014
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OEM Carrier Control Transformer 40VA 208/240V to 24V — Model PY1PPB036090ABAA

This genuine OEM Carrier control transformer (part# HT01BD209) is the factory-specified replacement for the Carrier PY1PPB036090ABAA packaged unit. The transformer steps down line voltage (208/240V) to the 24V low-voltage signal that powers your thermostat, control board, contactors, and every other control-circuit component. When the transformer fails, the entire control circuit goes dark — you'll see a blank thermostat, no fan response, and the system will not respond to any call for heating or cooling.

  • Specs: 208/240V Primary | 24V Secondary | 40VA capacity | 50/60 Hz | Replaces HT01BD207, HT01CN232, and 9076-00
  • OEM vs Generic: This is a genuine Carrier OEM part, wound to exact VA and voltage tolerances. Undersized or off-tolerance aftermarket transformers can overheat, trip thermal cutoffs, and damage connected control boards — costing far more than the transformer itself.
  • Install difficulty: 2/5 — Shut off all power at the breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 24V output after installation). Photograph all wiring connections before disconnecting. Always verify correct line voltage at your unit's data plate.
  • Warranty: 1-year OEM factory warranty against defects. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed for the Carrier PY1PPB036090ABAA packaged unit. This transformer is also a documented replacement for units originally equipped with HT01BD207, HT01CN232, or 9076-00. Always verify your unit's data plate voltage before ordering. Not sure it's the right fit? Our HVAC parts specialists confirm fitment before you buy — just reach out before placing your order.

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

Frequently Asked Questions

Does this Transformer fit my Carrier PY1PPB036090ABAA?
Yes. This is the factory-specified OEM transformer for the Carrier PY1PPB036090ABAA. 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 PY1PPB036090ABAA?
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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Mike Rivera
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