Same-day shipping before 3PM CST · 35,000+ OEM Parts · Texas CMBL & SAM.gov Registered · Government POs Accepted

Menu

Home Shop All Account Cart
OEM Carrier 40VA Transformer 120V-24V for PH10JA03600GADAA
Carrier

OEM Carrier 40VA Transformer 120V-24V for PH10JA03600GADAA

SKU: CARRIE-PH10JA03600GADAA-TRANSFORMER-HT01AW229 Brand: Carrier
✓ Guaranteed to fit PH10JA03600GADAA — or your money back. Terms

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014
SAM.gov Registered
Govt POs Accepted

OEM Carrier 40VA Control Transformer for Model PH10JA03600GADAA

This is the factory OEM replacement transformer (part number HT01AW229) for the Carrier PH10JA03600GADAA packaged heat pump unit. The control transformer steps down line voltage (120V primary) to 24V AC on the secondary side, powering the entire low-voltage control circuit — including the thermostat, contactor coil, reversing valve solenoid, and safety switches. When this transformer fails, nothing works: the thermostat goes blank, the unit will not respond to any call for heating or cooling, and you may find a blown 3A fuse on the control board as a secondary symptom.

  • Specs: 40VA rating | 120V primary / 24V secondary | Ring-style mount | Factory-matched output tolerance for stable control voltage
  • OEM vs Generic: This is a genuine Carrier OEM transformer engineered to exact VA and voltage output specifications for the PH10JA03600GADAA. Generic alternatives may deliver inconsistent 24V output, causing nuisance lockouts, thermostat brownouts, or premature contactor coil failure.
  • Install difficulty: 2/5 — Shut off all power to the unit before servicing. Tools needed: flat-head and Phillips screwdrivers, needle-nose pliers, multimeter. Label all low-voltage wires before disconnecting. Verify 24V output with a multimeter after installation before restoring full power.
  • Warranty: 1-year OEM factory warranty against defects. In stock and ships same business day from our warehouse.

Compatibility: Designed specifically for the Carrier PH10JA03600GADAA packaged heat pump. Always verify your unit's data plate voltage requirements before ordering. Have your model and serial number ready — our HVAC parts specialists are standing by to confirm fitment before you buy. Order today and get same-day shipping on in-stock parts.

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 PH10JA03600GADAA?
Yes. This is the factory-specified OEM transformer for the Carrier PH10JA03600GADAA. 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 PH10JA03600GADAA?
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.
Home Shop Search Account Cart
Fitment Guaranteed
MR
Mike Rivera
HVAC Parts Specialist — Online