Why Your Furnace Blows Cold Air During Orillia’s Deep Freezes

December 16, 2025
Few things are more stressful during an Orillia winter than turning on the furnace… and feeling cold air coming through your vents. It happens more often than you’d think, especially during the sudden temperature drops Orillia is known for. Here are the most common causes we see: 1. The furnace overheated and shut down When airflow is restricted—usually due to a dirty filter—the furnace can overheat and trigger a safety shutdown. The fan keeps running but the heat stops. 2. Frozen vent pipes Orillia’s deep freezes often cause frost buildup in high-efficiency furnace vent pipes. When this happens, the furnace can’t ignite properly and may run without producing heat. 3. Ignition or flame sensor issues Cold temperatures make ignition components work harder. If your furnace tries to light but the flame sensor doesn’t detect heat, it will shut down for safety. 4. Low gas pressure during extreme cold During provincial cold snaps, natural gas pressure can drop slightly. Furnaces with borderline performance may fail to ignite consistently. What to Do If your furnace is blowing cold air, shut it off, check the filter, and make sure your exterior vent pipes aren’t buried in snow or ice. If everything looks normal, call Mr. Heat Furnace Orillia —we can usually diagnose the issue within minutes.

How to Prepare Your Orillia Home for a Harsh Winter (Expert HVAC Checklist)

December 11, 2025
Orillia winters can be unpredictable—one day mild, the next extremely cold. The best way to avoid emergency furnace calls is to prepare your HVAC system before the season hits its peak. Here’s a homeowner-friendly checklist used by the technicians at Mr. Heat Furnace Orillia : 1. Replace your furnace filter before the temperature drops A fresh filter improves airflow, reduces energy bills, and helps prevent overheating shutdowns. 2. Schedule a fall furnace tune-up Tune-ups catch early signs of ignition issues, blower problems, cracked hoses, and worn components—all of which commonly fail during heavy winter use. 3. Clear snow and ice from exterior vents High-efficiency furnace vent pipes can freeze easily. Keeping them clear ensures your system runs safely. 4. Test your thermostat settings Make sure your thermostat responds properly and is placed away from cold drafts. 5. Seal windows and doors Even the best furnace can’t compensate for major heat loss around windows and doorframes. Weatherstripping and caulking can drastically reduce heating costs. 6. Listen for unusual furnace sounds Banging, rattling, or grinding noises are early indicators of a mechanical failure. Why It Matters Preventative work saves Orillia homeowners hundreds of dollars in avoided breakdowns and keeps your home consistently warm through the coldest storms. If you want peace of mind this winter, Mr. Heat Furnace Orillia can perform a complete winter-readiness check to make sure your system is prepared for whatever the season brings. Contact us today for fast HVAC services !

The Most Common Furnace Repairs We See in Orillia Every Winter

December 8, 2025
Winter is our busiest season at Mr. Heat Furnace Orillia , and year after year, we see the same types of furnace failures once temperatures drop below freezing. If you’re a homeowner in Orillia, here are the issues most likely to affect you: 1. Faulty Flame Sensors Flame sensors get coated in carbon from heavy winter use, causing the furnace to shut down repeatedly. A quick cleaning usually solves the issue. 2. Blower Motor Problems When the blower motor wears out, homeowners hear grinding, humming, or squealing noises. In winter, motors work harder and failures become common. 3. Pressure Switch Failures This small but crucial part detects airflow inside your furnace. When it fails—or when vent pipes get blocked—the furnace won’t start. 4. Limit Switch Trips If your furnace overheats (often from a clogged filter), the limit switch triggers a safety shutdown. These repeated trips can eventually wear it out. 5. Thermostat Malfunctions Old thermostats often misread temperatures in cold weather, causing short cycling or heat loss. Why Winter Repairs Are More Urgent Cold temperatures make minor issues escalate quickly. A furnace working at 50% capacity in November can fail completely during January’s cold snaps. At Mr. Heat Furnace Orillia , we prioritize fast winter response, same-day repairs, and honest pricing—because no homeowner should be left without heat.
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Top 5 Summer HVAC Mistakes to Avoid

July 9, 2025

Hot summer days in Orillia mean your air conditioner is working overtime. But are you using your HVAC system the right way? At Mr. Heat Furnace Repair Orillia, we often see common mistakes that can raise your energy bills or even damage your system. Here are the top 5 summer HVAC mistakes to avoid—and how to fix them!


❌ Mistake #1: Not Changing Your Air Filter

A clogged air filter can block airflow, making your system work harder and wear out faster. It also spreads dust and allergens in your home.


✅ Fix: Change your filter every 1 to 2 months during summer. If you have pets or allergies, check it more often.


❌ Mistake #2: Closing Air Vents in Unused Rooms

Many people think closing vents saves money. But it actually throws off the balance of your system and can increase pressure, which leads to leaks or breakdowns.


✅ Fix: Keep all vents open and clear. Let air flow evenly through your home.


❌ Mistake #3: Ignoring Thermostat Settings

Setting your thermostat too low or constantly adjusting it can waste energy and confuse your system.


✅ Fix: Set it between 24°C–26°C (75°F–78°F) when you're home, and higher when you're away. A programmable or smart thermostat is a great way to save money.


❌ Mistake #4: Skipping Summer HVAC Maintenance

Without regular maintenance, small problems go unnoticed—until your system breaks down on the hottest day of the year.


✅ Fix: Book a summer HVAC tune-up in Orillia with Mr. Heat Furnace Repair. We’ll check for issues and keep your AC running efficiently.


❌ Mistake #5: Blocking the Outdoor AC Unit

Grass, leaves, and even patio furniture can block the outdoor unit, which needs good airflow to work properly.


✅ Fix: Keep at least 2 feet of clear space around your outdoor unit. Hose it down gently to remove dirt and dust.


Watch: Common Summer HVAC Mistakes and How to Avoid Them

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("5 BIGGEST Summer HVAC Mistakes Homeowners Don't Know!" – Fox Family Heating and Air)

Call the Local Pros in Orillia

Avoiding these HVAC mistakes is easy when you have the right team on your side. At Mr. Heat Furnace Orillia, we help local families keep their homes cool, comfortable, and energy efficient all summer long.

Contact us today for reliable AC tune-ups, repairs, or full HVAC service in Orillia and nearby areas.