What are the specs for this Transformer?

The correct replacement for Tempstar model TEB15K34RTA — 208/240V to 24V with Relays | 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 TEB15K34RTA — 208/240V to 24V with Relays | 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 TEB15K34RTA — 208/240V to 24V with Relays | Ships Today

Name: Tempstar 40VA Transformer for TEB15K34RTA — 208/240V to 24V with Relays | Ships Today
Brand: Tempstar
SKU: 1053004-GEN
Price: 42.00 USD
Availability: InStock

SKU: 1053004-GEN Brand: Tempstar

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Overview

This is the genuine OEM 40VA control transformer assembly for the Tempstar TEB15K34RTA. It includes the 208/240V-to-24V, 40VA transformer (OEM 1056899) plus the matching 24V control relays — a standard 24V relay (OEM 1053004) and a 24V DPST relay (OEM 1060940). The transformer steps line voltage down to the 24V the control circuit needs to power the thermostat, relays, and other low-voltage components. When the transformer is open or shorted, the entire 24V control circuit goes dead — no thermostat response, no relay action, and no heating or cooling. The relays switch the higher-current loads on command from that 24V circuit.

Specifications

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

Compatibility

Direct-fit for the Tempstar TEB15K34RTA and related ICP/Heil units using the same 208/240V-to-24V 40VA control platform. Confirm your unit's primary voltage and relay terminal layout before installing.

Installation Guide

Safety First — Disconnect power at the unit and breaker, then confirm zero voltage with a multimeter.
Access — Remove the service panel to expose the control box.
Document — Photograph all primary, secondary, and relay wiring before disconnecting.
Remove — Unbolt the transformer and unseat the failed relays from their bases.
Install — Mount the new 40VA transformer and relays, then reconnect each lead per your photo.
Test — Restore power, confirm 24V across the secondary, and verify the relays switch their loads.

Signs You Need a Replacement

No 24V at the secondary — dead control circuit
Tripped breaker or blown low-voltage fuse on power-up
Relays won't pull in or chatter under load
Burnt smell, discoloration, or pitted relay contacts

Shipping & Returns

Ships same day before 3 PM CST. 30-day returns. Backed by the 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...

$42.00

Frequently Asked Questions

Does this Transformer fit my Tempstar TEB15K34RTA — 208/240V to 24V with Relays | Ships Today?

Yes. This is the factory-specified OEM transformer for the Tempstar TEB15K34RTA — 208/240V to 24V with Relays | 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 TEB15K34RTA — 208/240V to 24V with Relays | 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.

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