Same-day shipping on orders before 3PM CST · 15,000+ OEM Parts In Stock · Carrier · Bryant · ICP · Heil · Tempstar
Track Order | 1-800-NHP-HVAC | Trade Accounts

Menu

Home Shop All Account Cart
Home / OEM Payne Transformer 40VA 120V-24V f...
OEM Payne Transformer 40VA 120V-24V for PA1SPA102000AAAA
Payne

OEM Payne Transformer 40VA 120V-24V for PA1SPA102000AAAA

SKU: PAYNE-PA1SPA102000AAAA-TRANSFORMER-HT01BD236 Brand: Payne

Order before 3PM CST — ships same day.
Standard delivery 2-5 business days. Express options at checkout.

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

OEM Payne Transformer 40VA 120V–24V for Model PA1SPA102000AAAA

This is the factory OEM replacement transformer (part number HT01BD236) for the Payne PA1SPA102000AAAA air handler or furnace unit. The transformer steps down line voltage from 120V to the 24V required to power the entire low-voltage control circuit — including the thermostat, contactor coil, control board, and zone valves. When the transformer fails, the result is a completely unresponsive system: a blank thermostat, no fan operation, and no heating or cooling regardless of settings. A failed transformer is one of the most commonly overlooked causes of a total system shutdown.

  • Specs: 40VA rating | 120V primary / 24V secondary | Direct OEM replacement for part number HT01BD236 | Factory-matched output voltage and VA capacity for Payne PA1SPA102000AAAA control circuits
  • OEM vs Generic: The OEM transformer is wound and rated precisely for this unit's control load. Generic units may under-deliver VA capacity under peak demand, causing nuisance lockouts, erratic thermostat behavior, or premature failure of downstream control components.
  • Install Difficulty: 2/5 — Shut off power at the breaker and disconnect switch before beginning. Tools needed: flathead and Phillips screwdrivers, needle-nose pliers, multimeter to verify 24V output after installation. Label all low-voltage wires before disconnecting from terminal strip.
  • Warranty: 1-year OEM factory warranty. Orders placed before cutoff ship same business day from our climate-controlled parts warehouse.

Compatibility: Designed as a direct OEM fit for the Payne PA1SPA102000AAAA. Always confirm your existing transformer's VA rating and primary/secondary voltages against your unit's data plate before ordering. Our HVAC parts specialists are available to verify fitment — contact us before you order if you have any questions.

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 support@nationalhvacparts.com to initiate a return
  • Refunds processed within 5-7 business days

Frequently Asked Questions

Does this Transformer fit my Payne PA1SPA102000AAAA?
Yes. This is the factory-specified OEM transformer for the Payne PA1SPA102000AAAA. 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 Payne PA1SPA102000AAAA?
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 Payne 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 Payne 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