Reliable Rooftop HVAC Systems in Ontario

At LG Mechanical, we provide businesses across Canada with energy-efficient Rooftop Units (RTUs) that offer reliable heating, ventilation, and air conditioning (HVAC) solutions. Perfect for commercial buildings, RTUs keep your business comfortable year-round while helping you save on energy costs.

Our Services

What is a Rooftop Unit (RTU)?

A Rooftop Unit (RTU) is an HVAC system mounted on a building’s roof, providing heating, cooling, and ventilation. RTUs are ideal for low-rise commercial buildings like restaurants, offices, and warehouses, efficiently delivering comfort while saving valuable interior space.

Upgrade Your RTU for Better Efficiency

Lower Energy Bills

Newer RTUs use energy-efficient technologies to reduce costs.

Improved Comfort

Better temperature control and air quality enhance the comfort of employees and customers.

Environmental Impact

Modern RTUs reduce energy use, lowering your carbon footprint.

Fewer Repairs

A new unit can prevent frequent, costly repairs.

Energy-efficient Rooftop Units (RTUs) for commercial buildings

Our Services

Commercial air make-up unit delivering efficient HVAC service for businesses at Ontario, Canada by LG Mechanical

RTU Installation

Looking to install a new RTU? Our experienced technicians ensure a quick, efficient installation process tailored to your building’s needs.
  • Free Consultation
  • Post-Installation Support
  • Custom Installation
  • Efficient Service
  • Commercial rooftop HVAC unit repair and maintained for reliable, energy-efficient climate control services

    RTU Repair Services

    LG Mechanical offers fast, reliable services to get your system back to optimal performance.
  • Fast Response
  • Experienced Technicians
  • Cost-Effective
  • Comprehensive Service
  • Commercial rooftop air system improving ventilation in office property by LG Mechanical

    RTU Maintenance

    Routine maintenance ensures your RTU runs smoothly. LG Mechanical offers proactive plans to keep your system in top shape all year.
  • Extend System Life
  • Prevent Breakdowns
  • Boost Efficiency
  • Consistent Comfort
  • Why Choose LG Mechanical for Your RTU Needs?

    Energy-Efficient Solutions

    Save on energy with high-efficiency RTUs.

    Expert Installation

    Our licensed technicians guarantee a proper setup.

    Comprehensive Services

    We handle everything from installation to maintenance.

    24/7 Support

    Our team is available around the clock for emergencies.

    Benefits of Upgrading Your Heating System

    Lower Energy Bills

    New boilers deliver better performance, translating to reduced operating costs.

    Improved Comfort

    Consistent temperatures and quieter operations enhance your living or working environment.

    Government Incentives

    High-efficiency boilers often qualify for rebates, offsetting installation costs.

    Let’s Build Comfort Together!

    Contact us today to discuss your property’s needs and discover how we can help you create a space where tenants love to live.
    Please solve this math problem to verify you're human:
    7 - 5 =

    Thank you for considering LG Mechanical. At this time, we proudly serve customers only in Ontario, Canada.

    Get in Touch

    Ready to Upgrade?

    At LG Mechanical, We Make Your Comfort Our Top Priority.
    Head Office

    301 Bradwick Drive, Unit #20, Vaughan,ON L4K 3R6

    Let's Talk

    1-866-826-3386

    Email Support

    info@lgmechanical.ca

    Office Hour

    Available 24/7 - 365 Days

    The LG Mechanical Team Services the following areas:

    Locations
    L G Mechanical Repair Man
    FAQ'S

    Commonly Asked Questions.

    A rooftop HVAC unit (RTU) is a self-contained system installed on the roof of commercial buildings to provide heating, cooling, and ventilation. RTUs draw in outdoor air, condition it, and distribute it throughout the building. They are ideal for offices, warehouses, restaurants, and retail spaces because they save indoor space and deliver efficient comfort year-round.

    Upgrading to a modern RTU offers lower energy bills, improved air quality, quieter operation, and fewer repairs. High-efficiency RTUs also reduce your carbon footprint and may qualify for government rebates in Ontario, making them a smart investment for businesses.

    Commercial rooftop units should be serviced at least twice a year — typically in spring and fall. Preventive maintenance helps identify issues early, improves energy efficiency, reduces the risk of breakdowns, and extends the lifespan of your RTU.

    Warning signs include rising energy bills, uneven heating or cooling, frequent breakdowns, loud noises, and poor indoor air quality. If your RTU is more than 15 years old or requires costly repeated repairs, replacement with a high-efficiency unit is often more cost-effective. 

    Yes. Many Ontario utility providers and federal programs offer rebates for businesses that upgrade to high-efficiency rooftop HVAC systems. These incentives can significantly reduce upfront costs while helping your business save long-term on energy expenses. LG Mechanical can assist with rebate applications.

    LG Mechanical specializes in commercial HVAC solutions, offering expert RTU installation, repair, and proactive maintenance. With 24/7 emergency support, rebate assistance, and customized service plans, we help Ontario businesses maximize comfort, minimize costs, and ensure reliable performance year-round.