Transformers

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Carrier HT01BF208 Transformer

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MSRP: $84.65

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Carrier HT01BD702 460V PRI 24V SEC Transformer

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MSRP: $128.88

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Carrier HT01BD702 460V PRI 24V SEC Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Carrier HT01BD464 40va 460v PRIM 24v SEC Transformer

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MSRP: $62.25

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40va 460v PRIM 24v SEC Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Carrier HT01BD400 400V Transformer

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MSRP: $69.76

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Carrier HT01BD236 75va 200/230/460vPrim 24vSec

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MSRP: $210.16

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75va 200/230/460vPrim 24vSec FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Carrier HT01BD202 75va 208/230vPrim 24vSec Transformer

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MSRP: $165.08

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75va 208/230vPrim 24vSec Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Carrier HT01BC231 200/230V PRI, 24V SEC X-Former

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MSRP: $179.98

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200/230V PRI, 24V SEC X-Former FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Carrier HT01BB118 60va 115vPrim 24vSec Transformer

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MSRP: $61.05

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60va 115vPrim 24vSec Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Carrier HT01BB116 30va 115vPrim 24vSec Transformer

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MSRP: $144.70

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30va 115vPrim 24vSec Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Carrier HT01AW230 60va 200/230vPrim 24vSec Transformer

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MSRP: $114.79

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Trane TRR1998 480/600V PRI 240V SEC Transformer

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MSRP: $87.33

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480/600V PRI 240V SEC Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Trane TRR1898 208/230V->24V 50VA Transformer

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MSRP: $35.24

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208/230V->24V 50VA Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR1729 115V-PRI 24V-SEC 35VA Transformer

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MSRP: $40.54

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115V-PRI 24V-SEC 35VA Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR1581 200-230V-PRI 24V-SEC 75VA Transformer

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MSRP: $67.01

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200-230V-PRI 24V-SEC 75VA Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR1558 200/230->24V 75VA QC Xformer

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MSRP: $79.10

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200/230->24V 75VA QC Xformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR1122 40VA 200/230-24V Transformer

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MSRP: $57.35

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40VA 200/230-24V Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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**OBSOLETE/NO LONGER AVAILABLE**Trane TRR0987 120V-MultiTap 360VA Xformer

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MSRP: $189.77

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120V-MultiTap 360VA Xformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR0826 460-575V-PRI 24V-SEC 75VA Transformer

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MSRP: $137.78

Now: $104.38

Trane TRR0826 460-575V-PRI 24V-SEC 75VA Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements

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Trane TRR0825 208/230-PRI 24V-SEC 75VA Transformer

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MSRP: $159.18

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208/230-PRI 24V-SEC 75VA Transformer FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements

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Trane TRR0712 480/600-240V 150VA Transformer

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HVAC transformers adjust voltage levels to ensure that various parts of the HVAC system function efficiently and safely.

What is an HVAC Transformer?

An HVAC transformer is a device used within HVAC systems to modulate electrical voltage to suitable levels. This process is crucial for the safe and efficient operation of the system, ensuring that components are not damaged by incorrect voltage levels.

Definition and Purpose

Specifically, an HVAC transformer is designed to either increase (step-up) or decrease (step-down) the voltage as it transfers electrical power from one circuit to another using magnetic induction between coils. Transformers in HVAC systems typically feature both primary and secondary coils—the primary coil receives the incoming voltage which induces a different voltage in the secondary coil, depending on the needs of the system.

How HVAC Transformers Work

The primary role of an HVAC transformer is to manage voltage conversion to ensure that the system operates within safe electrical parameters. For example, a common use in residential HVAC systems is to reduce a high incoming voltage to a lower, more manageable level that the system components require. This is achieved through the electromagnetic induction process between the coils within the transformer, allowing it to supply the correct voltage for components like thermostats, control boards, and sensors, which typically operate at lower voltage levels.

This introductory explanation sets the stage for understanding the diverse types of HVAC transformers available, their specifications, and how to select the right transformer for specific HVAC applications, ensuring efficiency and safety in operation.

Types of HVAC Transformers

HVAC transformers come in various types to cater to different functions and requirements within an HVAC system. Understanding these can help you choose the most suitable transformer for your needs.

Step-Down Transformers

Step-down transformers are among the most commonly used in HVAC systems. Their primary function is to reduce the voltage from a higher level to a lower level, making it safe for use by the system's sensitive components. For instance, if your HVAC system operates components that require 24 volts, but the available supply is 120 volts, a step-down transformer is used to convert the incoming 120 volts into the necessary 24 volts. This not only protects the components but also ensures efficient operation.

Isolation Transformers

Isolation transformers provide a safety feature by isolating the primary and secondary coils, which helps to prevent any electrical shock or damage to sensitive equipment. In HVAC systems, these transformers are crucial when the system must be isolated from the main power supply to reduce noise or provide a clean power supply, free from interruptions and surges. They are especially important in environments where equipment sensitivity is a high priority, such as in hospitals or industrial settings.

Autotransformers

Autotransformers are used in scenarios where the voltage adjustment required is relatively minor. Unlike traditional transformers, autotransformers have a single winding that acts as both the primary and secondary, sharing part of the coil. They are typically more compact and cost-effective than dual-winding transformers. In HVAC systems, autotransformers are ideal for fine-tuning the voltage to match specific operational requirements without the need for large, heavy transformers.

Each type of transformer has its specific applications within an HVAC system, and choosing the right one depends on your system's voltage needs, safety requirements, and operational environment. Understanding these differences is key to ensuring that your HVAC system runs smoothly and efficiently, without risking damage to electrical components or unnecessary energy waste.

Common Specifications and Ratings

When selecting an HVAC transformer, it's crucial to understand the specifications and ratings that will ensure compatibility and efficiency within your system. These include voltage ratings, power ratings, and mounting types, each playing a significant role in the transformer's performance and suitability.

Voltage Ratings

Voltage ratings are a fundamental aspect of any transformer, indicating the maximum input (primary voltage) and output (secondary voltage) that the transformer can handle. For HVAC applications, it's essential to match the voltage ratings of the transformer with the voltage requirements of the system. Overlooking this could lead to insufficient power supply or potential damage to the system components. Ensure that the transformer's voltage rating meets or exceeds the highest voltage requirement of your system to maintain safety and functionality.

Power Ratings (VA)

The power rating of an HVAC transformer, measured in volt-amperes (VA), indicates the amount of electrical power the transformer can handle without overheating. It's vital to select a transformer with a power rating that matches or surpasses the total power consumption of all components connected to it. This ensures that the transformer can supply enough power reliably and safely over its operational life. Underestimating the power needs can lead to transformer overloads and failures, resulting in system downtime and potential repair costs.

Mounting Types

Transformers come with different mounting options, which can influence their installation and operational efficiency. Common mounting types include board (or chassis) mounting, foot mounting, and pole mounting. Each type provides different benefits:

Board mounting is typically used for smaller or lighter transformers that integrate directly onto an electrical board within the HVAC system.
Foot mounting is suitable for larger transformers that require a stable base and are often placed in utility rooms or basements.
Pole mounting is generally used for outdoor applications where transformers need to be elevated and secure from ground-level disturbances.

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