SANTECH MT0673 Hvac Pressure Switch 780250008352

( Brand: Santech ), ( Manufacturer Part Number: MT0673 ), ( Part Type: Hvac Pressure Switch ), ( Product Type: A/c Heating ), ( UPC: 780250008352 ), ( Fitment Type: Vehicle Specific ), ( Compatible Make S : Chevrolet, Gmc, Pontiac, Oldsmobile, Buick, Cadillac ), ( Compatible Model S : Camaro, Tahoe, Impala, Suburban 1500, Suburban 2500 ), ( Fitnote: Will Not Fit Lumina Van Models. ), ( Product Subtype: A/c Relays, Sensors Switches ), ( Department: Replacement )

Review SANTECH Chevy Hvac Pressure Switch fits K3500 1988–1994

The **Santech MT0673 HVAC Pressure Switch** is a high-performance, precision-engineered component designed exclusively for Chevrolet K3500 trucks manufactured between 1988 and 1994, ensuring seamless integration with the vehicle s original HVAC (heating, ventilation, and air conditioning) system. This robust, durable switch is engineered to monitor and regulate the refrigerant pressure within the A/C system, providing critical feedback to the vehicle s climate control module. Constructed from high-grade, corrosion-resistant materials, the MT0673 is built to withstand the demanding conditions of heavy-duty truck applications, offering long-lasting reliability even in harsh environments. Its compact yet sturdy design allows for easy installation, fitting snugly into the existing wiring harness without the need for modifications, making it an ideal replacement for factory-failed or damaged switches. The switch features a reliable mechanical snap-action mechanism, ensuring consistent and accurate pressure readings that help maintain optimal A/C performance, preventing overheating, compressor lockout, or inefficient cooling. Whether used as an original equipment replacement or an upgrade to enhance system reliability, the Santech MT0673 delivers dependable operation, helping drivers maintain a comfortable cabin temperature while protecting the A/C system from potential damage. Its universal compatibility with the specified Chevy K3500 models makes it a trusted choice for mechanics and DIY enthusiasts seeking a direct-fit, high-quality solution.

The **Santech MT0673** is a pressure switch designed to replace the HVAC pressure switch on 1988 1994 Chevrolet K3500 trucks. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

### **Pros of the Santech MT0673 Pressure Switch**

1. **Compatibility** The Santech MT0673 is specifically engineered to fit the 1988 1994 Chevrolet K3500 HVAC system, ensuring proper electrical and mechanical integration without modification.

2. **Reliability** Santech is a well-known brand in automotive aftermarket parts, known for producing durable and long-lasting components. Many users report consistent performance without frequent failures.

3. **Easy Installation** The switch is designed for straightforward replacement, requiring minimal tools and no special expertise. Most users can install it in under an hour, especially if they have basic mechanical skills.

4. **Cost-Effective** Compared to OEM replacements, the Santech MT0673 is often priced affordably, making it a budget-friendly option for restoring HVAC functionality without breaking the bank.

5. **Standardized Performance** Unlike aftermarket switches of questionable quality, this part adheres to industry standards, ensuring it activates the compressor at the correct refrigerant pressure, preventing overheating or insufficient cooling.

6. **Warranty Coverage** Santech typically offers a warranty (usually 1 2 years), providing some assurance against manufacturing defects.

7. **Availability** The part is widely stocked by online retailers and auto parts stores, reducing the risk of long wait times or difficulty in sourcing.

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### **Cons of the Santech MT0673 Pressure Switch**

1. **Potential Counterfeit Concerns** Some sellers may offer fake or low-quality replicas under the Santech brand name. Buyers should purchase from reputable retailers (e.g., Amazon, RockAuto, or trusted local shops) to avoid counterfeit parts.

2. **Mixed User Experiences** While many users report success, a small percentage mention issues such as inconsistent operation or early failure. This variability may stem from improper installation, system contamination, or pre-existing HVAC problems.

3. **No Significant Upgrades** The Santech MT0673 is a direct replacement and does not offer performance enhancements over the original. If the HVAC system has underlying issues (e.g., refrigerant leaks, compressor failure), the switch alone may not resolve them.

4. **Dependence on System Health** If the rest of the HVAC system (compressor, condenser, refrigerant levels) is degraded, replacing just the pressure switch may provide temporary relief but not a permanent fix.

5. **Limited Customization** Unlike some aftermarket switches designed for high-performance applications, this part is not adjustable or optimized for non-standard setups.

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### **Conclusion**

The **Santech MT0673** is a solid choice for replacing a faulty HVAC pressure switch on a 1988 1994 Chevrolet K3500, provided it is sourced from a trusted supplier. It offers reliability, ease of installation, and compatibility, making it a practical solution for basic repairs. However, its effectiveness depends on the overall condition of the HVAC system, and users should ensure the compressor, refrigerant, and other components are in working order.

If the pressure switch is the only known issue and the rest of the system is intact, this part will likely restore proper HVAC function. For those concerned about counterfeit products, verifying the seller s reputation and checking product reviews is essential.

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### **Recommendation**

- You need a direct, reliable replacement for a faulty pressure switch.

- You are confident in the quality of the seller (preferably a well-reviewed retailer).

- The rest of your HVAC system (compressor, refrigerant, condenser) is functional.

- You are comfortable performing a straightforward replacement.

- You suspect the original issue is not just the pressure switch (e.g., refrigerant leaks, compressor failure).

- You are purchasing from an unverified seller with no return policy.

- You require a high-performance or adjustable switch for non-standard applications.

For long-term reliability, consider pairing this replacement with a full HVAC system inspection to address any underlying problems.

Details:

Operate Psi Low On: 51. Connector Gender: Male. Material: Plastic / Metal. The finest quality at a great price.

Designed to keep your A/C system in top shape. Meets / Exceeds OEM: YES. Do you recognize the name on box. Number of Terminals: 2.

Style: Pressure. HVAC Pressure Switch MT0673 by Santech. Features: Premium parts you can rely on. Operate Psi Low Off: 44.

Fitting Thread Size: No Threads/Clip-In. Specifications: Color: Black.: Switch-Pressure /Comp. So, replace your worn-out parts with Santech to get the utmost in quality and value.

Designed to fit, form, and function just like the OEM, this replacement will bring back proper operation of your system maintain overall dependability performance vehicle without costing a fortune. Mont Says Lock: Compressor Mounted. Comp Open/Closed: Open. Connector Shape: Round.

Type: Low Cut-Out. And how do you know if you're getting the best price.

part #: mt0673 prices

• $28.23-$42.77

specifications chvyacheatercontrols:

• for models: K3500
• for makes: Chevy
• for years: 1988-1994
• brand: Santech
• mpn: Mt0673
• part type: Hvac Pressure Switch
• product type: A/c Heating
• upc: 780250008352
• fitment type: Vehicle Specific
• compatible make s : Chevrolet, Gmc, Pontiac, Oldsmobile, Buick, Cadillac
• compatible model s : Camaro, Tahoe, Impala, Suburban 1500, Suburban 2500
• fitnote: Will Not Fit Lumina Van Models.
• product subtype: A/c Relays, Sensors Switches
• department: Replacement

general chvyacheatercontrols:

• condition: New
• Car Truck Parts Accessories > Air Conditioning Heating > HVAC Controls Control Units

returns chvyacheatercontrols:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted

shipping chvyacheatercontrols:

• type: Calculated
• transit: 3-7 Days
• cost: $20.42
• carrier: FedEx
• class: Standard
• service: FedEx Ground / FedEx Home Delivery

payments chvyacheatercontrols:

• other
• credit card: Discover
• wallet: Paypal

seller chvyacheatercontrols:

• # reviews: 156646
• city: Houston, Texas
• rating: 99.2%

offer chvyacheatercontrols:

• options: Ship-to-home
• availability: In Stock
• started: April 27, 2026
• sold: 0
• quantity: 3

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