High-efficiency furnace installation for Mississauga homes. We remove the old unit, install the new furnace, and confirm the system is operating correctly.
Mississauga-based HVAC service with clear communication before work begins.
No hidden fees or surprises. You approve the price before we start any work.
Call (437) 999-4242 any time. We answer outside business hours.
If something needs review after the visit, contact OLU HVAC and the team will explain the next step.
Fill out the form and we'll get back to you within 24 hours. Or call us directly for immediate help.
No obligation. We'll call you within 24 hours.
Recent Work
These photos show actual heating, cooling, water-heater, and commercial HVAC work handled by OLU HVAC in Mississauga and the GTA.



Real answers to questions Mississauga and GTA customers ask us most.
Most residential furnace installations are completed in one day. Older homes with venting or gas line changes may take longer.
Yes. We do a proper heat-load calculation rather than just matching the old equipment, so the new furnace is the right size for your home.
We install properly sized residential furnace systems and help you compare practical options based on your home, venting, comfort needs, and budget.
Yes. A 96%+ efficiency furnace pays back over its life through lower gas bills and may qualify for federal or provincial rebates depending on the program.
Yes. We do code-compliant gas line work and proper venting as part of the installation.
Olu HVAC Mississauga is open 24 hours. Call us, email us, or send a message.