Precision Machining for HVAC & Heat Exchange

From precision-machined heat exchanger components to custom air handling parts, we manufacture the critical components that keep your HVAC systems operating at peak efficiency. Industry leaders trust us to machine their most demanding thermal control components where precision and thermal performance are non-negotiable. With 75+ years of experience in HVAC manufacturing, we deliver the tight tolerances and superior surface finishes that ensure your systems maintain optimal heat transfer and temperature control.

Rooftop HVAC

Keep Your Production Moving with On-Time Parts

We stand out by combining state-of-the-art precision machining with seamless supply chain management, so you never miss a deadline.

Cut your lead times

Our comprehensive supply chain management ensures your parts are machined, stored, and delivered when you need them.

Precision you can rely on

We maintain the highest quality standards, so you can know that every batch of parts will meet your exact specifications.

Scale with confidence

Whether you need prototypes or millions of parts, our scalable production allows you to meet increasing demand.

HVAC unit

Custom Parts for HVAC & Heat Exchange Systems

From compact heat exchangers to large-scale air handling systems, we manufacture the precision components that optimize thermal performance and energy efficiency. Our team understands the unique challenges of HVAC applications - where surface finish quality, dimensional accuracy, and material selection directly impact heat transfer rates and system reliability. We help you develop custom solutions that improve thermal efficiency, enhance air flow dynamics, and ensure consistent temperature control across your entire system.

Secondary Processes for Full-Service Solutions

Stop juggling multiple vendors for your critical HVAC components. Beyond precision machining, we manage all secondary operations in-house or through our trusted network of suppliers. From heat treating and plating that enhance durability, to specialized surface finishes that ensure optimal sealing performance, we deliver fully finished parts ready for your assembly line. Our quality checks at every step mean you get consistent, ready-to-use components without the complexity of coordinating multiple suppliers.

HVAC equipment

Streamlined Supply Chain Integration

Managing component inventory for your HVAC manufacturing shouldn't add complexity to your operations. Our short lead times, supplier network, and just-in-time delivery help reduce complexity in your supply chain. You’ll get the right parts when you need them, improving your production flow and minimizing disruptions.

Our precision machining services

With over 75 years of precision machining excellence, we deliver custom components for HVAC systems, heat exchangers, and thermal control equipment that meet the most demanding specifications. From prototype development to multi-million piece orders, our ISO:9001 certified machine shop specializes in handling complex, high-difficulty work across all metal alloys - including the specialized materials required for optimal heat transfer and temperature control applications.

Our commitment to quality, combined with extensive machining capabilities, ensures your heat exchanger components, air handling parts, and thermal control assemblies are manufactured to the highest standards with competitive lead times. Whether you need precision-machined components for commercial HVAC systems, industrial cooling equipment, or temperature control solutions, we deliver the quality and reliability that thermal management applications demand.

Core services

CNC Milling

Our advanced vertical and horizontal milling centers with up to 6-axis capabilities deliver the complex geometries critical for HVAC and heat exchange systems. We specialize in manufacturing heat exchanger components, air handling housings, and thermal control parts where surface finish and precise tolerances are essential. Our expertise ensures your components maintain optimal thermal performance and energy efficiency across all operating conditions.

Multi-Spindle Machining

Our automated multi-spindle machines process bars up to 1-5/8" and chucking to 6", delivering high-volume precision components critical for HVAC applications. We specialize in manufacturing repeatable, tight-tolerance parts for heat transfer equipment, temperature control systems, and cooling assemblies where consistency is essential. Our expertise ensures your production lines maintain quality standards through reliable, high-volume component delivery.

CNC Turning

Our advanced CNC turning centers handle bars up to 4" and chucking to 20" diameter, delivering precision components critical for thermal management systems. We specialize in manufacturing cooling system components, air handling parts, and HVAC equipment housings where concentricity and surface finish are essential. Our expertise ensures your components maintain optimal performance in demanding thermal applications.

Swiss Machining

Our precision Swiss turning centers process bars up to 7/8" diameter and lengths to 4", delivering the intricate components critical for temperature control systems. We specialize in manufacturing small, complex parts for thermal sensors, control devices, and precision cooling equipment where tight tolerances and superior finishes are essential. Our expertise ensures your miniature components maintain reliable performance in critical HVAC applications.

Features to support your business

High Precision CNC Machining

Perfect for complex custom parts and components.

Inventory Management

Keeps your production schedule on track by ensuring stock availability.

Range of Materials

Ideal for harsh, high-temperature, high-pressure environments.

On-Time Delivery

Ensures your supply chain stays agile with consistent delivery schedules.

Extensive Supplier Network

Our strong network ensures we can source the best components and materials.

Proudly U.S. Manufactured

High standards, faster turnaround times, and easier communication

We'd love to hear from you!

Reach out to our team to get a quote

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Scalable production

Short lead times

Fair prices

ISO-9001 certified

Secondary processes

Range of materials

On-time delivery

75+ years in business

Advanced CNC machining

Rapid prototyping

HVAC / heat exchange machining FAQs

What factors influence the cost of machined brass parts?

Several factors affect the final cost. The specific brass alloy chosen impacts material price. Part complexity – including intricate features, tight tolerances, and required surface finishes – influences machining time. Order quantity also plays a significant role, with higher volumes typically allowing for lower per-part costs due to setup efficiencies. Finally, any required secondary operations like plating or polishing will add to the overall cost.

How does brass's excellent machinability actually benefit my project?

Brass's high machinability translates directly into several project benefits: faster production cycle times, potentially lower machining costs due to reduced time and tool wear, the ability to hold tighter tolerances more easily, and achieving exceptionally smooth surface finishes directly off the machine. This makes it highly efficient for both prototyping and high-volume production runs where speed and cost-effectiveness are important.

What kinds of surface finishes can be achieved on precision machined brass parts?

Brass readily accepts excellent, smooth surface finishes directly from the machining process due to its machinability. It can also be easily polished to a high, bright luster. Various plating options (like nickel, chrome, or tin) are also commonly applied to brass parts for enhanced durability, corrosion resistance, or specific aesthetic requirements.

How do you ensure the quality and consistency of machined brass parts?

Delivering high-quality, consistent brass components is a top priority at Spex. While brass is generally easier to machine than many other metals, precision is still crucial. Our quality system, built on our ISO 9001:2015 certification, ensures careful checks during production for dimensional accuracy and adherence to specifications. These same quality standards apply from prototype to high-volume production runs.

What information is needed to get an accurate quote for brass machining services?

To provide the most accurate quote, please share detailed part drawings or CAD models, specify the exact brass alloy required (e.g., C360, C260), required tolerances, desired quantity, any critical features, and details on necessary finishing operations (like polishing, plating, or engraving). The more detail provided, the better we can tailor a precise and competitive quote.