From Oshawa to Clarington, Durham Region homeowners trust Cassar Heating & Air Conditioning for expert fireplace service, installation and emergency repairs. We’re TSSA certified, locally based, and ready to help when your fireplace needs attention.
Professional installation of gas, electric, and wood-burning fireplaces for Durham Region homes. Whether you’re building new or renovating your existing living space, we handle everything from permits to final inspection. Custom fireplace installations designed to complement your home’s style and heating needs.
Fast, reliable fireplace repair service across Durham Region communities. From pilot light issues to gas valve problems, our TSSA-certified technicians diagnose and fix fireplace issues quickly. We service all major brands and handle everything from minor tune-ups to major component replacements.
Complete fireplace replacement for Durham Region homeowners ready to upgrade their heating. We help you choose the right size and style for your space, handle the removal of your old unit, and install your new fireplace with precision. Financing available for qualified customers.
Keep your fireplace running safely and efficiently with professional annual maintenance service. Our comprehensive tune-up includes cleaning, safety inspection, pilot light adjustment, and thermocouple testing. Regular maintenance prevents costly repairs and ensures your family’s safety during Ontario’s cold winters.
Upgrade your old fireplace to a high-efficiency model that reduces heating costs and environmental impact. We specialize in modern gas fireplace inserts and direct-vent units that provide maximum heat output with minimal energy waste. Perfect for Durham Region’s variable winter conditions.
When your fireplace stops working during Durham Region’s coldest days, we provide emergency repair service to restore your comfort quickly. Available for gas leaks, ignition failures, and safety concerns that can’t wait. Our emergency technicians carry common parts and provide same-day service when possible.
Durham Region homeowners have trusted David Cassar and his team for over a decade to deliver honest, professional fireplace service. We understand local homes, climate challenges, and what it takes to keep your fireplace running safely and efficiently all winter long.
A quality gas fireplace typically lasts 15-25 years in Ontario’s climate, while electric units can run 20-30 years with proper maintenance. Wood-burning fireplaces and chimneys, when properly maintained, can last decades longer. The key factors affecting lifespan include the quality of installation, regular maintenance, and how frequently the unit operates during Ontario’s heating season.
In Durham Region, where we experience both harsh winters and humid summers, fireplaces face additional stress from temperature cycling and moisture. Units that receive annual professional maintenance and are used moderately tend to reach the upper end of their expected lifespan. Signs your fireplace is aging include difficulty lighting, uneven flames, increased repair frequency, and reduced heat output.
Modern high-efficiency units installed today often come with 10-15 year warranties and are built to stricter standards than older models. If your fireplace is approaching 20 years old and requiring frequent repairs, replacement may be more cost-effective than continued maintenance.
Fireplace installation costs in Durham Region typically range from $2,500-$8,000 depending on the type and complexity of the installation. Gas fireplace inserts average $3,500-$6,000 installed, while direct-vent units range from $4,000-$8,000. Electric fireplaces are the most affordable option at $1,500-$3,500 installed, though they provide less heat output than gas models.
Major repair costs vary widely based on the issue. Simple pilot light or thermocouple replacements typically cost $200-$400, while gas valve replacements can run $500-$900. Complete control board failures may cost $600-$1,200 to repair. Annual maintenance service typically costs $150-$250 and helps prevent costly emergency repairs during peak heating season.
Many Durham Region homeowners are surprised by the additional costs like permits ($100-$200), gas line extensions ($300-$800 per run), and electrical work for direct-vent units ($200-$500). These factors can add 15-30% to the base installation cost, so it’s important to budget accordingly.
Durham Region’s diverse housing stock presents unique fireplace challenges and opportunities. Many homes built in the 1980s-2000s came with builder-grade gas fireplaces that are now reaching replacement age. These units often have limited venting options and may require creative solutions for upgrades. Older homes in communities like downtown Oshawa or historic Newcastle may have existing chimneys that can accommodate fireplace inserts with proper inspection and preparation.
The region’s newer subdivisions in areas like South Ajax and North Whitby often feature open-concept layouts that benefit from direct-vent fireplaces positioned for maximum heat distribution. However, these modern homes may have structural limitations that affect venting routes and installation complexity. Our experience with local building codes and inspection requirements helps streamline the permit and installation process for Durham Region homeowners.
Energy costs in Ontario make fireplace efficiency a key consideration. With natural gas prices fluctuating and electricity rates varying by time of use, choosing the right fireplace type can impact your long-term heating costs. We help Durham Region homeowners evaluate their specific situation to choose the most cost-effective heating solution for their space and usage patterns.
Durham Region’s temperature extremes put stress on fireplace components that can lead to performance issues. If your fireplace takes multiple attempts to light, produces yellow or orange flames instead of blue, or shuts off unexpectedly, these are signs that professional attention is needed. Strange odors, especially the smell of gas when the unit is off, require immediate professional inspection for safety reasons.
Visible issues like white staining around the unit, excessive condensation on nearby windows during operation, or soot buildup on the glass all indicate combustion problems that affect both efficiency and safety. During Ontario’s heating season, these issues often worsen as the unit works harder and operates more frequently. Addressing problems early prevents more costly repairs and ensures reliable operation when you need heat most.
Performance changes are often the first sign of aging components. If your fireplace doesn’t heat your space as effectively as it once did, or if you notice increased noise during operation, these symptoms suggest wear in the heat exchanger, blower, or control systems. Annual professional inspections catch these issues before they lead to complete system failure during the coldest part of winter.
Durham Region’s variable winter weather makes fireplace efficiency crucial for comfort and cost control. During mild periods in December and March, use your fireplace’s lower heat settings to supplement your main heating system without overheating your space. When temperatures drop below -15°C, run the unit consistently rather than cycling it on and off, which reduces efficiency and increases wear on ignition components.
Clean glass dramatically improves heat transfer and efficiency. In Durham Region’s humid climate, moisture can accelerate glass fogging and mineral deposits. Clean your fireplace glass monthly during heating season using approved cleaners, never household glass cleaners which can damage the special glass coatings. Proper glass maintenance can improve heat output by 15-20%.
Consider your home’s air circulation patterns when operating your fireplace. Many Durham Region homes benefit from running ceiling fans on low speed to distribute fireplace heat throughout the room. During Ontario’s shoulder seasons, strategic fireplace use can reduce your overall heating costs by allowing you to lower your thermostat while maintaining comfort in your most-used living spaces.
Ontario building codes require specific safety measures for fireplace installations that protect your family and property. Carbon monoxide detectors are mandatory within 15 feet of any gas-burning appliance, and we recommend testing them monthly throughout heating season. Gas fireplaces also require annual inspection of venting systems to ensure proper exhaust removal and prevent dangerous backdrafting.
Never block fireplace air intake or exhaust vents with snow, landscaping, or storage items. Durham Region’s heavy snow loads can obstruct external vents, creating dangerous operating conditions. Keep the area around your fireplace clear of flammable materials, including holiday decorations, furniture, and curtains. The glass on gas fireplaces can reach 400°F during operation and remains hot for hours after shutdown.
Develop a maintenance schedule that includes professional annual inspection and cleaning, monthly visual checks of the venting system, and seasonal testing of all safety features. Keep your fireplace manual accessible and ensure all family members know how to shut off the gas supply in an emergency. These simple precautions ensure years of safe, comfortable fireplace operation in your Durham Region home.
Before calling for service, these simple checks can often resolve common fireplace issues and get your unit running again.
Most fireplace issues start with the pilot light going out. Follow the manufacturer’s relight instructions on the unit — usually hold the pilot button for 30–60 seconds.
These small sensors sit in the pilot flame and generate the signal to keep the gas valve open. If they’re worn, the pilot lights but won’t stay on. This needs a technician.
There’s usually a shutoff valve behind or beneath the fireplace. Make sure it’s fully open — these sometimes get turned off accidentally during cleaning.
Most modern gas fireplaces use a remote or wall switch. Weak batteries cause intermittent ignition failures before failing completely.
Heavy soot or white mineral deposits on the glass can affect some sensor-based ignition systems. Clean glass also improves efficiency significantly.
If none of the above restore your fireplace, it’s time for a licensed technician. David and his crew serve all of Durham Region and respond fast.
“David installed our gas fireplace insert last fall and it’s been perfect through this Durham Region winter. Professional installation, fair pricing, and great follow-up service. Highly recommend for fireplace work.”
“Our gas fireplace wouldn’t light and David had it fixed same day. Turned out to be a simple thermocouple replacement but he took time to explain everything and test the whole system. Great service in Whitby.”
“Cassar upgraded our old fireplace to a high-efficiency model. The difference in heat output is amazing and it looks great in our family room. Professional work from start to finish.”
Professional fireplace installation, repair, and maintenance throughout Durham Region and surrounding communities.
Same-day service available. TSSA certified. Honest pricing. Call or book online.
