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 Furnace Transformer 40VA 120V–24V for UPFLOW080U42M19
Carrier

OEM Carrier Furnace Transformer 40VA 120V–24V for UPFLOW080U42M19

SKU: CARRIE-UPFLOW080U42M19-TRANSFORMER-HT01CN001 Brand: Carrier
✓ Guaranteed to fit UPFLOW080U42M19 — 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 Furnace Transformer 40VA 120V to 24V for Model UPFLOW080U42M19

This is the genuine OEM Carrier transformer (part number HT01CN001), the factory-specified replacement for the Carrier UPFLOW080U42M19 upflow gas furnace. The control transformer steps line voltage (120V) down to the low-voltage (24V/12V) needed to power the control board, thermostat, and all 24V control circuit components. When this transformer fails, the entire control circuit loses power — the thermostat goes blank, the furnace refuses to respond to any command, and the system is completely inoperative. Replacing it with the correct OEM unit restores full system functionality immediately.

  • Specs: 120V primary | 24V / 12V secondary | 40VA rated | Factory Authorized Part — OEM part number HT01CN001 (also supersedes HT01BJ115, 19EA41612, 19EA42612)
  • OEM vs Generic: OEM transformers are wound to exact VA and voltage tolerances required by Carrier's control board. Undersized or off-spec generic units can under-power the control board, cause nuisance lockouts, or fail prematurely under normal heating season loads.
  • Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter (to verify 0V before touching wiring). Photograph all low-voltage wiring connections before disconnecting. Swap wire-for-wire and restore power to verify 24V output before closing the cabinet.
  • Warranty: 1-year OEM factory warranty. In stock — ships same business day from our warehouse.

Compatibility: Direct OEM replacement for the Carrier UPFLOW080U42M19 upflow gas furnace. Verify the 120V primary and 40VA rating on your unit's data plate before ordering. If you're unsure of fitment, our HVAC parts team verifies compatibility before you buy — order with confidence and get back up and running today.

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 UPFLOW080U42M19?
Yes. This is the factory-specified OEM transformer for the Carrier UPFLOW080U42M19. 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 UPFLOW080U42M19?
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