Receive a complimentary system condition report with any repair!
Save $50 on Your First Service Today
New customers save $50 on their initial service call. Get dependable diagnostics and practical HVAC solutions today.
Honest Diagnostics Backed by Decades of Experience
We believe good HVAC work starts with finding the actual problem. With more than 35 years of hands-on experience, we provide careful workmanship, clear communication, and practical recommendations. Instead of automatically pushing replacement, we look for effective ways to repair, maintain, and extend the useful life of your equipment.
- 35+ Years of Experience: Our background in heating, cooling, and refrigeration gives us decades of hands-on knowledge for diagnosing equipment problems.
- Repair-Focused Service: We prioritize accurate troubleshooting and practical repairs that can help customers get more useful life from existing equipment.
- Clear System Information: Customers receive straightforward explanations so they can understand equipment condition and available service options.
- Fully Licensed and Insured: We provide residential and commercial HVAC work with a commitment to responsible, careful service.
- Free System Condition Report: Receive a complimentary system condition report with any repair to better understand your equipment.
Practical HVAC Services Built Around Your Equipment
When heating, cooling, or refrigeration equipment stops performing properly, replacing the entire system is not always the first answer. At CADMUS Enterprises, Inc., we focus on careful diagnostics, repair, and maintenance so customers can make informed decisions about the equipment they already own.
Our commercial HVAC service supports rooftop units, air handlers, and other heavy commercial equipment through troubleshooting and ongoing maintenance. For businesses that depend on consistent temperature control, our refrigeration service helps identify performance problems that could affect stored products and daily operations.
We service gas and oil furnaces to help property owners maintain steady winter heating while addressing efficiency and reliability concerns. Our boiler services apply the same diagnostic approach to gas and oil hydronic systems. When summer temperatures rise, our air conditioning services focus on restoring consistent cooling and identifying issues that can increase energy use. We also maintain and repair heat pumps that provide heating and cooling throughout the year.
Our HVAC technician evaluates the condition of the system, identifies the source of the problem, and explains practical repair options. This service-first approach helps residential and commercial customers make decisions based on actual equipment condition rather than unnecessary replacement.
High-Quality Heating, Cooling, and Refrigeration Solutions
Keep essential equipment working with service for commercial HVAC systems, refrigeration equipment, furnaces, boilers, air conditioners, and heat pumps. As a faithful cooling and heating contractor, we focus on diagnostics, maintenance, and targeted repairs that address actual equipment problems and support dependable operation.
Commercial HVAC
Maintain reliable commercial HVAC systems with careful diagnostics and repair-focused service.
Commercial HVAC
Our services include:
- Rooftop unit service
- Air handler maintenance
- Diagnostic troubleshooting
- Equipment condition reports
- Energy efficiency checks
Refrigeration
Protect commercial refrigeration equipment with precise diagnostics and targeted repairs. Get service that supports daily operations.
Refrigeration
Our services include:
- Equipment diagnostics
- Targeted repairs
- System maintenance
- Insulation checks
- Condition reporting
Furnaces
Restore dependable furnace performance with careful diagnostics and practical repairs.
Furnaces
Our services include:
- Gas furnace service
- Oil furnace service
- Diagnostic testing
- Efficiency checks
- Routine maintenance
Boilers
Maintain steady heat with reliable boiler diagnostics, maintenance, and repairs.
Boilers
Our services include:
- Gas boiler service
- Oil boiler service
- System diagnostics
- Component checks
- Efficiency evaluations
Air Conditioners
Restore reliable cooling with careful air conditioning diagnostics and targeted repairs.
Air Conditioners
Our services include:
- Cooling diagnostics
- AC repairs
- Routine maintenance
- Efficiency checks
- Equipment assessments
Heat Pumps
Keep year-round comfort dependable with careful heat pump diagnostics and repair.
Heat Pumps
Our services include:
- Heat pump diagnostics
- Heating checks
- Cooling checks
- Routine maintenance
- System condition reports
Keep Your Essential HVAC Equipment Working
A heating or cooling problem can disrupt your home, business, or daily operations. CADMUS Enterprises, Inc. provides dependable HVAC services focused on identifying the actual issue and recommending a practical path forward. As an HVAC contractor serving East Islip, NY, and the surrounding areas, we work with commercial HVAC equipment, refrigeration systems, furnaces, boilers, air conditioners, and heat pumps. Our repair-focused approach is designed to maintain reliable operation, improve efficiency when possible, and help customers avoid unnecessary replacement. Whether you manage commercial equipment or need service at home, we bring more than 35 years of hands-on experience to the job.
Frequently Asked Questions
Have questions about heating, cooling, refrigeration, maintenance, or repairs? CADMUS Enterprises, Inc. provides clear information to help residential and commercial customers understand their equipment and make informed service decisions.
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We service commercial HVAC equipment, refrigeration systems, gas and oil furnaces, boilers, air conditioners, and heat pumps. Our work focuses primarily on diagnostics, maintenance, and repairs for existing equipment.
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Yes. We serve both residential and commercial customers, including homeowners, business owners, and commercial property managers who depend on reliable heating, cooling, and refrigeration equipment.
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Repair is a major focus of our approach. We carefully diagnose equipment to determine the actual problem and recommend practical service options based on system condition rather than automatically recommending full replacement.
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Routine maintenance can identify developing problems, support energy efficiency, and help reduce the likelihood of unexpected equipment failures. It also gives you a clearer picture of your system’s current condition.
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Yes. Customers can receive a free system condition report with any repair. The report provides useful information about equipment condition so you can better understand current performance and service needs.
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We accept cash payments and checks.
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Yes. CADMUS Enterprises, Inc. is fully licensed and insured, providing dependable HVAC service for residential and commercial customers.
What Customers Say About Us
Get Fast, Reliable HVAC Help
Headquarters
Here to keep your equipment running.
East Islip, NY
Business Hours
Mon - Sat: 8:00 AM - 7:00 PM
Sun: Closed
Service Areas
CADMUS Enterprises, Inc. serves residential and commercial customers throughout East Islip, NY, and surrounding areas. We provide dependable heating, cooling, and refrigeration service to help local property owners keep essential equipment operating reliably.