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OEM Carrier 40VA 120V to 24V Control Transformer for C48A302062 — Ships Today
Carrier

OEM Carrier 40VA 120V to 24V Control Transformer for C48A302062 — Ships Today

SKU: CARRIE-C48A302062-TRANSFORMER-HT01BD236 Brand: Carrier

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Texas CMBL #19328542014
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Govt POs Accepted

OEM Carrier Control Circuit Transformer 40VA for Model C48A302062

This OEM step-down transformer is the factory-specified replacement for the Carrier C48A302062 packaged unit. It converts 120V line voltage to the 24V AC signal that powers your thermostat, contactor coil, gas valve, and all low-voltage control circuits. When the transformer fails — whether from a short, voltage spike, or age — absolutely nothing in the control system responds: no heat, no cooling, no fan, and no thermostat display. Replacing it is one of the fastest repairs in HVAC service. OEM part numbers HT01BD236 and HT01BD702 are both covered by this listing and are direct factory replacements for this application.

  • Specs: 40VA rating | Primary: 120V AC | Secondary: 24V AC | Screw or quick-connect terminals | Factory-matched impedance for stable low-voltage control
  • OEM vs Generic: OEM transformers are wound to exact VA and impedance specifications, preventing nuisance tripping of the secondary fuse and ensuring reliable coil pull-in voltage. Generic units often run undersized VA, causing overheating and premature failure under heavy control loads.
  • Install difficulty: 2/5 — Disconnect all power before servicing. Tools needed: flathead and Phillips screwdriver, multimeter (verify 24V output after install), wire stripper. Label all wires before removal. Total job time typically under 20 minutes.
  • Warranty: 1-year OEM factory warranty. In stock and ships same business day from our climate-controlled warehouse.

Compatibility: Designed for the Carrier C48A302062 packaged unit. Cross-references OEM part numbers HT01BD236 and HT01BD702. Always verify primary voltage on your unit's data plate before ordering — some configurations may use 208/240V primary transformers. If uncertain, our team will verify fitment before you order. Order today and get back to comfort fast with same-day shipping.

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 $75
  • 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 C48A302062 — Ships Today?
Yes. This is the factory-specified OEM transformer for the Carrier C48A302062 — Ships Today. 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 C48A302062 — Ships Today?
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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