What amp contactor do I need for my Day & Night system?

The correct replacement for Day & Night model NRGA42 NRGA48 Series Condenser — 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 Day & Night equipment which lists the model number NRGA42 NRGA48 Series Condenser — Ships Today.

My AC clicks but the compressor does not turn on. What is wrong?

Clicking from the outdoor unit without the compressor starting usually means a worn contactor. The contactor is the relay that sends power to the compressor. When its contacts are pitted or worn, it clicks but cannot establish a solid electrical connection. Other symptoms: visible pitting or burn marks on the contactor face, AC works intermittently, or buzzing from the contactor.

Is this contactor compatible with Bryant or Payne systems too?

Many Day & Night 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.

Day & Night

Day & Night 3-Pole 25A 24V Contactor for NRGA42 NRGA48 Series Condenser — Ships Today

Name: Day & Night 3-Pole 25A 24V Contactor for NRGA42 NRGA48 Series Condenser — Ships Today
Brand: Day & Night
SKU: 85394
Price: 49.40 USD
Availability: InStock

SKU: 85394 Brand: Day & Night

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Overview

This genuine Day & Night OEM definite-purpose contactor (Part #85394) is a 3-pole, 25-amp unit with a 24-volt control coil. The contactor is the power relay that energizes the compressor and condenser fan when the thermostat applies 24V to its coil. A 3-pole design switches all three legs, common on larger condensers and three-phase or fully isolated single-phase applications. Failure comes from arc-pitted or welded contacts, an open or chattering coil, or insect/debris fouling. Typical symptoms are a unit that won't start, buzzing without operation, a system that won't shut off because the points are stuck closed, or visibly burned contacts. Replacing it with this OEM part restores dependable switching across all three poles.

Specifications

Spec	Value
Part Number	85394
Type	Definite-Purpose Contactor
Brand	Day & Night
Poles	3-Pole
Contact Rating	25 Amps
Coil Voltage	24V
Application	AC Condenser / Compressor

Compatibility

Direct OEM fit for Day & Night NRGA-series condensing units including NRGA42LAH01, NRGA48LAH01, NRGA48LAL01, NRGA48MAH01, and NRGA48MAL01. Matches the factory 3-pole 25A 24V contactor.

Installation Guide

Safety First — Disconnect power at the outdoor disconnect. Verify zero voltage with a multimeter.
Access — Remove the condenser service panel.
Document — Photograph all three line/load legs and the 24V coil wiring before disconnecting.
Remove — Transfer wires one at a time or label them, then unscrew the old contactor from the bracket.
Install — Mount the new contactor and reconnect each wire exactly per your photo, including the coil leads.
Test — Restore power, call for cooling, and confirm the contactor energizes and the unit runs.

Signs You Need a Replacement

Condenser won't start on a cooling call
Humming or buzzing with no compressor operation
Unit runs continuously due to welded contacts
Burned, pitted, or melted contact pads

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

Day & Night 3-Pole 25A 24V Conta...

$49.40

Frequently Asked Questions

Does this Contactor fit my Day & Night NRGA42 NRGA48 Series Condenser — Ships Today?

Yes. This is the factory-specified OEM contactor for the Day & Night NRGA42 NRGA48 Series Condenser — 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 contactor on my Day & Night NRGA42 NRGA48 Series Condenser — Ships Today?

Difficulty: Medium (30–45 min)
Step 1: Turn off breaker. Step 2: Open condensing unit panel. Step 3: Photograph ALL wiring on the contactor. Step 4: Label each wire with tape. Step 5: Disconnect wires and remove old contactor. Step 6: Mount new contactor, reconnect wires matching your photo. Step 7: Restore power and test.

My AC clicks but the compressor won’t turn on. What’s wrong?

Clicking from the outdoor unit without the compressor starting = worn contactor. The contactor sends power to the compressor. When its contacts are pitted, it clicks but can’t make solid contact. Look for: visible pitting/burn marks on the contactor face, intermittent operation, or buzzing.

Is this contactor compatible with Bryant or Payne too?

Many Day & Night 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 Day & Night contactor?

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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