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 PG8DAA048095ABJA
Carrier

OEM Carrier Furnace Transformer 40VA 120V-24V for PG8DAA048095ABJA

SKU: CARRIE-PG8DAA048095ABJA-TRANSFORMER-HT01BC116 Brand: Carrier
✓ Guaranteed to fit PG8DAA048095ABJA — 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 Control Transformer 40VA 120V/24V for Model PG8DAA048095ABJA

This OEM 40VA step-down transformer is the factory-specified replacement for the Carrier PG8DAA048095ABJA gas furnace, replacing discontinued OEM part number HT01BC116 (superseded by HT680054). The transformer converts 120V line voltage down to the 24V AC signal required to power the entire low-voltage control circuit — including the thermostat, gas valve, inducer relay, and ignition board. When this transformer fails, the furnace goes completely dead: no thermostat response, no inducer, no ignition attempt. If you're getting zero 24V at the secondary terminals, this transformer is the first component to test and replace.

  • Specs: 40VA rating | Primary: 120 VAC | Secondary: 24 VAC | 50/60 Hz | Single phase | Compact chassis-mount housing (approx. 3" L × 2-3/16" W × 2" H)
  • OEM vs Generic: This OEM-spec unit is wound to exact Carrier tolerance, ensuring stable 24V output under full load. Generic transformers often run slightly off-voltage, which can cause intermittent board lockouts, erratic thermostat behavior, and premature contactor coil wear.
  • Install difficulty: 2/5 — Shut off power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, multimeter (to confirm 0V before touching terminals and verify 24V output after). Label all low-voltage wires before disconnecting. Reconnect primary leads first, then secondary. Typical job time: 20–35 minutes.
  • Warranty: 1-year OEM manufacturer warranty. In-stock units ship same business day when ordered by 5 PM local time.

Compatibility: Direct OEM replacement for Carrier model PG8DAA048095ABJA gas furnace. Supersedes discontinued part HT01BC116. Also replaces cross-reference part numbers HT01BC115, HT01BB126, HT01CT120, HT01BC120, HT01AW115, and HT01AA012 on compatible Carrier, Bryant, and Payne furnace platforms. Always confirm your unit's control board voltage requirement (24V secondary) on the furnace data plate before ordering. Questions about fitment? Our HVAC parts specialists verify compatibility before you buy — reach out before you order.

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 PG8DAA048095ABJA?
Yes. This is the factory-specified OEM transformer for the Carrier PG8DAA048095ABJA. 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 PG8DAA048095ABJA?
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