Global HVAC Solutions | Heat Pumps, Air Handlers & PTAC Manufacturer Yuju EnvironTech

Complete HVAC Solutions

YUJU provides complete HVAC solutions for residential and commercial projects, including R454B heat pumps, air handlers, fresh air systems, engineering support, OEM customization and global delivery.
OEM & Private Label Manufacturing

YUJU provides OEM and private label HVAC solutions with product customization, engineering support, manufacturing coordination, quality control and global delivery.
Global Technical Support

YUJU provides HVAC technical support, engineering services, product selection, system design, remote troubleshooting and project assistance for global HVAC partners.

Yuju EnvironTechWhatsApp：+8615958167850

: HVAC Project Discussion

YUJU reviews HVAC project requirements, climate conditions, drawings and technical specifications before equipment selection, system design and quotation.
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: HVAC System Design

YUJU EnvironTech provides custom HVAC system design, engineering consultation, duct layout, equipment selection, and complete HVAC solutions for residential and commercial projects worldwide.
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: Product Selection & Quotation

YUJU EnvironTech provides professional HVAC product selection and engineering support services, helping distributors, contractors and project developers choose suitable heat pumps, air handlers, PTAC units and customized HVAC solutions worldwide.
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: Production & Delivery

YUJU coordinates HVAC manufacturing, OEM customization, quality inspection, export packaging and global delivery for international distributors and projects.
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Engineering Project Case

4 Ton Rooftop Package Unit Replacement Project in Russia | YUJU

YUJU supported a Russia rooftop HVAC replacement project by matching an older 4.1 TR R22 cooling-only unit with a modern 4 Ton packaged rooftop solution based on cooling capacity, airflow and installation requirements.
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Industrial HVAC Engineering Support Project in Zimbabwe | YUJU

YUJU provides industrial HVAC engineering support for a Zimbabwe infrastructure project, including packaged DX units, ductwork, explosion-proof ventilation, controls, materials and quotation support.
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R454B Heat Pump & Air Handler OEM Project for North America | YUJU

North American R454B heat pump OEM project covering 3–5 Ton heat pumps, matched air handlers, AHRI, A2L safety, ETL/UL, DOE/CCMS, private label, flexible MOQ and mixed-container planning. See how YUJU matches complex HVAC requirements with customized solutions.
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USA Residential HVAC Private Label & OEM | YUJU EnvironTech

YUJU supports U.S. residential HVAC private-label programs with R454B systems, matched indoor and outdoor equipment, OEM branding, technical support and long-term supply coordination.
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40 Ton R32 Rooftop HVAC Replacement in Florida USA

40 Ton R32 commercial rooftop HVAC replacement project for a medical facility in Florida, USA, featuring downflow airflow, fresh-air intake, 460V 3-phase power, coastal protection and project-specific RTU engineering.
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Bangladesh Industrial Dehumidification AHU Project | Rotary Desiccant HVAC Solution

YUJU EnvironTech delivered a customized industrial dehumidification AHU solution in Bangladesh using rotary desiccant technology, chilled water cooling, multi-stage filtration and advanced humidity control engineering.
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Malaysia Electrical Facility HVAC Project | Inverter Rooftop HVAC Solution for Critical Infrastructure

YUJU EnvironTech delivered an inverter rooftop HVAC solution for a Malaysia electrical facility with duty standby redundancy, stable temperature control and reliable cooling performance for critical infrastructure applications.
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Cambodia Dormitory HVAC Project

A large-scale worker dormitory project in Cambodia consisting of 9 residential buildings, each with 3 floors and 16 rooms per floor. A total of 432 sets of 18,000 BTU wall-mounted split air conditioners were supplied to provide reliable cooling and comfor
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Dallas, USA | R454B Refrigerant Supply Solution

Dallas HVAC contractor sourced R454B refrigerant through Yuju EnvironTech during the 2025 U.S. refrigerant shortage. The shipment arrived safely within one month, helping the customer maintain project schedules and avoid installation delays.
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Custom Air Handler Solution for Detroit Commercial Project

We found Yuju EnvironTech through Google while searching for a reliable HVAC equipment supplier for our project in Detroit, Michigan. our project required a custom cooling-only air handler with 460V power supply, R32 refrigerant, and ETL certification
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How We Support Global HVAC Projects

Contact YUJU EnvironTech for global HVAC equipment supply, OEM and private label cooperation, and customized project solutions. We support distributors, contractors and project partners with heat pumps, air handlers, PTAC units, fresh air systems, intelligent HVAC controls, technical support and international project cooperation.

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Professional Certificates ETL

Professional Certificates TUV

Professional Certificates AHI

HVAC FAQ

What is the difference between a standard RTU and a custom large-capacity rooftop HVAC unit?: A standard RTU uses fixed factory configurations, while a custom large-capacity RTU may be engineered around project-specific airflow, ESP, voltage, refrigerant, fresh air, curb, controls and environmental requirements.

Can a large rooftop HVAC replacement qualify for energy rebates or incentives?: Yes, some large commercial rooftop HVAC replacement projects may qualify for utility, state or regional energy-efficiency incentives depending on location, equipment efficiency and program requirements.

What should be considered when replacing a rooftop HVAC unit in Florida?: Florida RTU replacement projects should consider high temperature, humidity, coastal corrosion, fresh-air load, roof curb compatibility, wind conditions, electrical supply and local installation requirements.

What certifications are required for a large rooftop HVAC unit in the United States?: Certification and compliance requirements for a U.S. rooftop HVAC project depend on the equipment, capacity, refrigerant, state and project specification. AHRI, ETL or UL and local code requirements may apply.

Can large-capacity rooftop HVAC units use R32 or R454B refrigerant?: Yes, large rooftop HVAC platforms may use lower-GWP refrigerants such as R32 or R454B where the equipment design, certification and project requirements support the selected refrigerant.

Can YUJU supply 20 Ton, 30 Ton, 40 Ton, 50 Ton and 60 Ton rooftop HVAC units?: YUJU can support project-based 20 Ton, 30 Ton, 40 Ton, 50 Ton and 60+ Ton commercial rooftop HVAC applications, subject to equipment platform and project requirements.

What external static pressure is required for a large commercial rooftop unit?: Required external static pressure depends on the building duct system, filters, dampers, fresh-air components, grilles and other external resistance connected to the rooftop unit.

What airflow does a 40 Ton rooftop HVAC unit require?: A 40 Ton rooftop HVAC unit does not have one fixed airflow value. Required CFM depends on cooling load, supply-air temperature, humidity control, ventilation and external static pressure.

Can a 40 Ton rooftop unit reuse the existing roof curb?: Yes, an existing roof curb may sometimes be reused if the new RTU is compatible. When dimensions differ, a curb adapter, transition section or new curb may be required.

What information is required to replace a 40 Ton rooftop HVAC unit?: To replace a 40 Ton rooftop HVAC unit, provide the existing model, capacity, airflow, external static pressure, curb dimensions, duct openings, electrical supply, fresh-air requirements and project location.

What is the difference between a standard RTU and a custom large-capacity rooftop HVAC unit?: A standard RTU uses fixed factory configurations, while a custom large-capacity RTU may be engineered around project-specific airflow, ESP, voltage, refrigerant, fresh air, curb, controls and environmental requirements.

Can a large rooftop HVAC replacement qualify for energy rebates or incentives?: Yes, some large commercial rooftop HVAC replacement projects may qualify for utility, state or regional energy-efficiency incentives depending on location, equipment efficiency and program requirements.

What should be considered when replacing a rooftop HVAC unit in Florida?: Florida RTU replacement projects should consider high temperature, humidity, coastal corrosion, fresh-air load, roof curb compatibility, wind conditions, electrical supply and local installation requirements.

What certifications are required for a large rooftop HVAC unit in the United States?: Certification and compliance requirements for a U.S. rooftop HVAC project depend on the equipment, capacity, refrigerant, state and project specification. AHRI, ETL or UL and local code requirements may apply.

Can large-capacity rooftop HVAC units use R32 or R454B refrigerant?: Yes, large rooftop HVAC platforms may use lower-GWP refrigerants such as R32 or R454B where the equipment design, certification and project requirements support the selected refrigerant.

Can YUJU supply 20 Ton, 30 Ton, 40 Ton, 50 Ton and 60 Ton rooftop HVAC units?: YUJU can support project-based 20 Ton, 30 Ton, 40 Ton, 50 Ton and 60+ Ton commercial rooftop HVAC applications, subject to equipment platform and project requirements.

What external static pressure is required for a large commercial rooftop unit?: Required external static pressure depends on the building duct system, filters, dampers, fresh-air components, grilles and other external resistance connected to the rooftop unit.

What airflow does a 40 Ton rooftop HVAC unit require?: A 40 Ton rooftop HVAC unit does not have one fixed airflow value. Required CFM depends on cooling load, supply-air temperature, humidity control, ventilation and external static pressure.

Can a 40 Ton rooftop unit reuse the existing roof curb?: Yes, an existing roof curb may sometimes be reused if the new RTU is compatible. When dimensions differ, a curb adapter, transition section or new curb may be required.

What information is required to replace a 40 Ton rooftop HVAC unit?: To replace a 40 Ton rooftop HVAC unit, provide the existing model, capacity, airflow, external static pressure, curb dimensions, duct openings, electrical supply, fresh-air requirements and project location.

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Complete HVAC Solutions

OEM & Private Label Manufacturing

Global Technical Support

HVAC Project Discussion

HVAC System Design

Product Selection & Quotation

Production & Delivery

How We Support Global HVAC Projects

HVAC FAQ

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