Since 1996
Creating Comfort Where You Live
Professional heating, air conditioning, plumbing, and water heater services for your home. Licensed professionals committed to your comfort.
Since 1996
Trusted Experience
Licensed Technicians
Fully Certified
5-Star Rated
Customer Satisfaction
Special Offers
Current Promotions
Spring AC Tune-Up Special
Get your air conditioning system ready for summer with our comprehensive tune-up service at a special seasonal rate.
Book NowNew Furnace Installation Sale
Upgrade to a high-efficiency furnace and save on your energy bills. Ask about our financing options.
Get a Free QuoteRefer a Friend Program
Refer a friend to Corestar Mechanical and you both receive a discount on your next service call.
Learn MoreWhat We Do
Our Services
Comprehensive home comfort solutions from a team you can trust.
Heating
Keep your home warm and comfortable all winter long with our expert heating services.
- Furnace installation & replacement
- Heating system repairs
- Annual maintenance & tune-ups
Air Conditioning
Stay cool and comfortable during the hottest days with reliable AC services.
- Central AC installation
- Air conditioner repairs
- Seasonal maintenance
Plumbing
From leaky faucets to complete plumbing installations, we handle it all.
- Drain cleaning & repair
- Pipe repair & replacement
- Fixture installation
Water Heaters
Expert water heater installation, repair, and maintenance for endless hot water.
- Tank water heater installation
- Tankless water heater systems
- Water heater repairs
Maintenance
Keep your home comfort systems running reliably with our preventative maintenance plans.
- Annual furnace & AC tune-ups
- Filter replacement
- Full system inspections
New Construction
Complete HVAC and plumbing installations for new home builds and major renovations.
- Custom HVAC system design
- Plumbing rough-in & finish
- Ductwork design & installation
About Us
Your Trusted Home Comfort Partner Since 1996
For nearly three decades, Corestar Mechanical Ltd. has been the trusted name in heating, air conditioning, plumbing, and water heater services. Founded in 1996, we've built our reputation on honest work, fair pricing, and genuine care for our customers.
Our team of licensed technicians brings expertise and professionalism to every job — whether it's a routine maintenance visit or an urgent repair. We treat every home like our own and every customer like family.
As a locally owned and operated business, we're invested in our community. When you choose Corestar, you're choosing a company that stands behind its work with satisfaction guarantees and ongoing support.
29+
Years Experience
100%
Satisfaction Guarantee
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FAQ
Frequently Asked Questions
Find answers to common questions about our services.
We recommend annual furnace maintenance, ideally in the fall before heating season begins. Regular maintenance helps prevent breakdowns, improves efficiency, and extends the life of your system.
Common signs include age (over 10 years), rusty water, inconsistent temperatures, unusual noises, frequent repairs, and visible leaks around the base of the unit.
Yes, we provide free estimates for new equipment installations. For service and repair calls, a diagnostic fee applies which is waived if you proceed with the recommended repair.
Regular HVAC maintenance, upgrading to high-efficiency equipment, sealing ductwork, proper insulation, and installing a programmable thermostat are all great ways to reduce energy consumption and lower your bills.
We proudly serve the greater area and surrounding communities. Contact us to confirm service availability in your specific location.
Absolutely. All of our technicians are fully licensed and undergo regular training to stay current with the latest technologies and building codes.
We service all major brands of heating, cooling, plumbing, and water heater equipment. Whether you have a Lennox, Carrier, Trane, Rheem, or any other brand, our technicians can help.
Get Started
Request a Free Quote
Tell us about your project and we'll get back to you within 24 hours.
Get In Touch
Contact Us
We're here to help with all your home comfort needs.
Visit Us
123 Main Street, Your City, ON