HVAC Installation in Alliston, ON
We install new furnaces, air conditioners, and complete heating and cooling systems built to last.
HVAC Contractor in Alliston
Expert heating and cooling installation, repair, and maintenance for homes and businesses across Simcoe County.
By the numbers
5 services offered
8 areas served
Our services
HVAC Repair in Alliston, ON
We fix furnaces, air conditioners, and heating systems fast so you're comfortable again.
HVAC Maintenance in Alliston, ON
Regular tune-ups keep your heating and cooling systems efficient, reliable, and ready for whatever the season throws at you.
Duct Cleaning in Alliston
We clean the hidden pathways in your home so you breathe easier and your HVAC runs better.
Commercial HVAC Services in Alliston
Reliable heating and cooling systems that keep your business running, no matter the season.
How it works
01. Contact us
Call or fill out the form. We'll ask about your system, the issue you're facing, and schedule a visit that works for you.
02. Assessment
Our technician inspects your system, diagnoses the problem, and explains your options - repair or replace - with upfront pricing.
03. Work completed
We complete the repair or installation, test the system to make sure it's running properly, and walk you through what we did.
04. Follow-up
We check in after the job to make sure everything is still working well. If you have questions or concerns, we're a phone call away.
The work we do
Representative images — not photographs of specific jobs.
Why people choose us
Emergency service
Furnace quit in the middle of winter? AC died during a heat wave? We offer emergency service when you need it most.
Licensed and insured
Our technicians are fully licensed and our work is insured. You're protected, and your system is in good hands.
Honest pricing
No surprises. We give you a clear quote before we start work, and we stick to it. You'll know what you're paying and why.
Quality guarantee
We stand behind our installations and repairs. If something isn't right, we come back and make it right.
About Middletown Sheet Metal Ltd
We're a local HVAC contractor serving Alliston and the surrounding communities. Our team handles everything from emergency furnace repairs to full system installations - residential and commercial.
When your heating or cooling system fails, you need someone who shows up on time and gets it fixed right. That's what we do. Licensed technicians, honest pricing, and we stand behind our work.
What you can count on
Workmanship warranty
All installations and repairs backed by our quality guarantee
Licensed technicians
Fully certified HVAC professionals on every job
Upfront pricing
Clear quotes before work begins - no hidden fees
Areas we serve
HVAC Services in Beeton, ON HVAC Services in Tottenham, ON HVAC Services in Cookstown, ON HVAC Services in Angus, ON HVAC Services in Everett, ON HVAC Services in Bond Head, ON HVAC Services in Loretto, ONWhere we work
Frequently asked questions
How often should I have my HVAC system serviced?
We recommend annual maintenance - ideally in the spring for your AC and fall for your furnace. Regular service catches small issues before they become expensive repairs and keeps your system running efficiently.
How long does a typical HVAC system last?
A well-maintained furnace or AC unit typically lasts 15-20 years. If your system is older than that and needs frequent repairs, replacement is usually more cost-effective than continuing to fix it.
Do you offer emergency service?
Yes. If your heating or cooling system fails and you need immediate help, give us a call. We offer emergency service for urgent situations.
What's the difference between repair and replacement?
If your system is less than 10 years old and the repair cost is reasonable, fixing it usually makes sense. If it's older and the repair is expensive, replacement might be the better long-term investment. We'll walk you through both options with honest pricing.
Do you work on commercial HVAC systems?
Yes. We handle commercial installations, repairs, and maintenance for businesses, offices, and multi-unit buildings.
How long does a new system installation take?
Most residential installations take 1-2 days depending on the complexity. We'll give you a timeline when we quote the job so you know what to expect.