CARBON DIOXIDE (CO2) SENSORS

Carbon dioxide (CO2) sensor for HVAC demand-controlled ventilation

CARBON DIOXIDE (CO2) SENSORS

What Are Carbon Dioxide (CO2) Switches?

A CO2 sensor in HVAC systems is a device that gauges the concentration of carbon dioxide (CO2) in the air. Its primary purpose is to assess indoor air quality (IAQ) by indicating how effectively a space is ventilated and adjusting ventilation rates based on occupancy levels. This approach enhances energy efficiency by introducing fresh air only when necessary.

By measuring the CO2 levels, which tend to rise when people are present, the sensor instructs the HVAC system to modify ventilation to ensure optimal air quality.

Elevated CO2 levels are linked to inadequate IAQ, which can result in discomforting symptoms such as headaches and fatigue.

CO2 sensors facilitate demand-controlled ventilation, allowing the system to bring in fresh air only when required, thereby minimizing energy usage.

HVAC technician beside a rooftop chiller plant with insulated refrigerant piping and butterfly valves

Our Range of Services

  • Chiller Installation
  • Chiller Routine Inspections
  • Chiller Services & Descaling
  • Compressor Winding
  • Mechanical Repairs
  • Electrical Rectifications
  • Pump & VFD Repairs
  • Pressure Testing & Gas Charging
  • AMC & CAMC Contracts
  • Preventive Coatings
  • Audits, Certifications, and more

Why Choose Us ?

  • 25 years of experience
  • Skilled technical team
  • Staff trained by Carrier / York
  • Quality-assured services
  • Quick response times
  • 24/7 emergency services
  • Transparent communication
  • Cost-effective solutions
  • Competitive pricing
  • Customer-focused approach
  • Flexible scheduling options
  • Warranty and guarantee offers
HVAC engineer with a two-way radio in front of a motor control centre panel

Frequently Asked Questions

Who is Compress India, and what sets you apart?

Compress India has grown from humble beginnings into a respected leader in industrial HVAC and customized cooling solutions. With over 30 years of experience, we deliver turnkey systems, chillers, and bespoke services across diverse industries, underpinned by innovation, customer satisfaction, and trust.

What industries do you serve?

We’re proud to serve a wide range of sectors, including pharmaceuticals, healthcare, IT, telecommunications, logistics, warehousing, steel, textiles, chemicals, food processing, finance, and educational institutions—tailoring solutions to meet each industry's unique needs.

What services do you provide?

We offer end-to-end HVAC services, including system design, installation, turnkey project execution, chiller and VRV/VRF system solutions, ducting, fabrication, automation, electrical works, and industrial refrigeration. Whether it’s a small requirement or a large-scale project, we deliver reliable, energy-efficient, and cost-effective solutions.

Do you provide customized HVAC solutions?

Yes. Every client has different needs, and we specialize in offering tailored services—ranging from inspection and preventive maintenance to upgrades like insulation replacement, motor servicing, and specialized fabrication. Our customized approach ensures you get solutions that truly fit your operations.

What common AC problems do you address?

We handle issues like water leakage (caused by clogged drains or trays), poor airflow (due to dirty filters or fan faults), and cooling failures (caused by refrigerant leaks, outdoor unit problems, or electrical issues). Our expert technicians ensure quick, lasting fixes for all major and minor problems.

How can I reduce AC energy consumption?

We recommend regular servicing, using the timer function, keeping rooms sealed, and setting the temperature to 24 °C for maximum efficiency. Upgrading to inverter ACs with higher star ratings is also an effective long-term solution for reducing energy bills.

What is the lifespan of an AC system?

On average, centralized HVAC systems last 10–15 years, while room or split AC units run efficiently for 3–6 years under normal daily usage. With regular servicing and proper care, their lifespan can be extended.

How do you ensure quality in your HVAC projects?

Every project we undertake goes through strict quality checks at every stage—right from design to installation and maintenance. We use trusted brands, follow industry standards, and our team of skilled engineers ensures that the systems are safe, reliable, and long-lasting.

Do you provide consultation before starting a project?

Yes. We believe every client has unique requirements, so we offer detailed consultation and site inspections before starting any project. This helps us understand your needs better and design a solution that balances performance, cost-efficiency, and sustainability.

Can businesses upgrade their existing HVAC systems with you?

Absolutely. We specialize in retrofitting and upgrading older HVAC systems with the latest technology. Whether it’s energy-efficient chillers, modern ducting, or smart automation, we help businesses transition to advanced systems without disrupting ongoing operations.