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 Transformer 40VA 208/230V–24V for PF1MNB024000AAAA
Carrier

OEM Carrier Transformer 40VA 208/230V–24V for PF1MNB024000AAAA

SKU: CARRIE-PF1MNB024000AAAA-TRANSFORMER-HT01CN241 Brand: Carrier
✓ Guaranteed to fit PF1MNB024000AAAA — 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 (HT01CN241) for Model PF1MNB024000AAAA

This OEM Carrier control transformer (part number HT01CN241) is the factory-specified replacement for the Carrier PF1MNB024000AAAA air handler. The transformer steps down the 208/230V line voltage to the 24V AC signal required to power the entire low-voltage control circuit — including the thermostat, relay coils, and control board. When this transformer fails, the system goes completely unresponsive: the thermostat goes dark, no heating or cooling stages activate, and the blower will not run. A failed transformer is one of the most commonly misdiagnosed HVAC faults, often confused with a bad thermostat or control board.

  • Specs: 208/230V primary | 24V secondary | 40VA rating | OEM part number HT01CN241 | Factory-matched output tolerance for reliable low-voltage control
  • OEM vs Generic: This is a genuine Carrier OEM transformer, built to exact factory specifications for the PF1MNB024000AAAA. Generic transformers may vary in VA rating and insulation class, risking nuisance tripping or premature failure under load.
  • Install difficulty: 2/5 — Shut off power at the disconnect before servicing. Tools needed: flathead and Phillips screwdrivers, multimeter (to verify 24V output after install), wire labels or tape. Photograph all wiring connections before disconnecting. Typical job time: 20–30 minutes.
  • Warranty: 1-year OEM manufacturer warranty. Ships same business day from our warehouse when ordered before cutoff.

Compatibility: Designed as a direct OEM replacement for the Carrier PF1MNB024000AAAA air handler. Verify your unit's data plate confirms a 208/230V primary and 24V secondary control circuit before ordering. Need fitment confirmation? Our HVAC parts specialists verify compatibility before you buy — contact us today and ship the same day.

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 PF1MNB024000AAAA?
Yes. This is the factory-specified OEM transformer for the Carrier PF1MNB024000AAAA. 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 PF1MNB024000AAAA?
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