What are the specs for this Transformer?

The correct replacement for Tempstar model TEB15K50RTA — 208/240V to 24V | Ships Today is this exact part. It is the factory-specified replacement with exact OEM specifications. Using a part with different specifications can cause equipment damage or void your warranty. You can verify this by checking the data plate on your Tempstar equipment which lists the model number TEB15K50RTA — 208/240V to 24V | Ships Today.

Is this transformer compatible with Bryant or Payne systems too?

Many Tempstar parts are cross-compatible with Bryant and Payne systems since all three brands are manufactured by Carrier Global Corporation. The same physical part is often used across multiple brand labels with different model numbers. To verify cross-compatibility, check your Bryant or Payne equipment service manual for cross-compatible part numbers, or contact info@nationalhvacparts.com with your model number for confirmation.

Tempstar

Tempstar 40VA Transformer for TEB15K50RTA — 208/240V to 24V | Ships Today

Name: Tempstar 40VA Transformer for TEB15K50RTA — 208/240V to 24V | Ships Today
Brand: Tempstar
SKU: 1053004-GEN
Price: 34.95 USD
Availability: InStock

SKU: 1053004-GEN Brand: Tempstar

OEM Guaranteed

Same-Day Ship

30-Day Returns

Secure Checkout

Texas CMBL #19328542014

SAM.gov Registered

Govt POs Accepted

Overview

This OEM 40VA control transformer (Tempstar part #1056899) powers the low-voltage control circuit of the Tempstar TEB15K50RTA PTAC, stepping 208/240V line voltage down to a stable 24V secondary. It supplies the thermostat and the unit's switching relays — including the 24V relay (part #1053004) and 24V DPST relay (part #1060940) used in this control group. When the transformer fails, the entire 24V circuit goes dead: the unit ignores the thermostat, the fan and compressor stay off, and you may notice a burnt-insulation smell or a blown control fuse. A buzzing or overheating transformer is a clear sign it is on the way out, and a weak transformer can also cause relays to chatter instead of pulling in cleanly.

Specifications

Spec	Value
Transformer Part Number	1056899
Relay Part Numbers	1053004 (24V), 1060940 (24V DPST)
Type	Control Transformer
Brand	Tempstar (ICP / Heil)
Rating	40 VA
Primary Voltage	208 / 240 V
Secondary Voltage	24 V
Fit	OEM Replacement

Compatibility

Engineered as a direct OEM replacement for the Tempstar TEB15K50RTA PTAC and related ICP / Heil / Tempstar TEB15-series packaged terminal units using a 40VA 208/240V-to-24V control transformer. Confirm the part number on your existing transformer before ordering.

Installation Guide

Safety First — Disconnect power at the breaker and verify zero voltage with a multimeter at the line and 24V terminals.
Access — Remove the front cabinet panel to reach the control box.
Document — Photograph all primary and secondary wire connections before disconnecting.
Remove — Label and disconnect the line-voltage primary leads and 24V secondary leads, then unbolt the failed transformer from its bracket.
Install — Mount the new transformer, reconnect primary and secondary leads exactly per your photo, matching the voltage taps.
Test — Restore power, confirm 24V at the secondary, and verify the relays pull in and the unit responds to the thermostat.

Signs You Need a Replacement

No 24V output — unit unresponsive to the thermostat
Relays chattering or failing to engage
Buzzing, humming, or overheating transformer
Repeatedly blown low-voltage control fuse

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. National HVAC Parts fitment guarantee.

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

Tempstar 40VA Transformer for TE...

$34.95

Frequently Asked Questions

Does this Transformer fit my Tempstar TEB15K50RTA — 208/240V to 24V | Ships Today?

Yes. This is the factory-specified OEM transformer for the Tempstar TEB15K50RTA — 208/240V to 24V | 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 Tempstar TEB15K50RTA — 208/240V to 24V | 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 Tempstar 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 Tempstar 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.

Menu