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Heating Services

Need reliable heating services in Seattle Metro? We offer expert furnace repair, maintenance, and new system installation. Get a free estimate today!

Is Your Furnace Blowing Cold Air, Making Strange Noises, or Just Not Keeping Up?

Is your furnace clicking on and off constantly, making a rattling sound that has you worried, or leaving you with sky-high energy bills for lukewarm results? These aren't just minor annoyances; they're signs that your heating system is struggling and needs a professional diagnosis before a small problem becomes a major, middle-of-the-night failure. Glendale Heating And Air Conditioning has been solving these exact issues in Seattle Metro homes since 1938, and our team is ready to help.

Heating Repair & Service

When your heat goes out, you need a fast and accurate diagnosis, not a sales pitch. We get calls every day from homeowners dealing with a furnace that won't ignite, a system that blows cold air, or strange banging and whistling sounds coming from their vents. These problems often point to specific component failures that we've seen hundreds of times, from a worn-out ignitor or a faulty flame sensor to a blower motor that’s on its last legs.

Ignoring these symptoms is a gamble. A simple fix today can prevent a catastrophic failure tomorrow. Our technicians don't guess; we use a methodical process to pinpoint the exact cause of the problem, ensuring we fix it right the first time.

What We Check During a Repair Call:

  • Ignition System: We test ignitors, pilot assemblies, and flame sensors to ensure a reliable start-up.
  • Blower & Motor: We inspect the blower wheel for debris and check motor amperage to prevent overheating.
  • Safety Controls: We verify that all limit switches and safety sensors are functioning correctly to protect your home.
  • Thermostat & Wiring: We confirm the thermostat is communicating properly with the furnace.
  • Heat Exchanger: We perform a visual inspection for any signs of cracks or stress, which can be a serious safety hazard.

In some cases, a system is too old or damaged for a cost-effective fix, and the conversation may shift toward Heating Installation & Replacement. But our first priority is always to find a safe and reliable repair. Our team handles every kind of breakdown, and you can see our full approach to Heating Repair & Service across the Seattle Metro area.

Heating Installation & Replacement

Deciding to replace your furnace is a big step, usually taken after years of frustration with rising energy bills, uneven heating, and the constant threat of another breakdown. If your system is over 15 years old, requires frequent repairs, or simply can't keep your home comfortable anymore, it's likely costing you more to keep it than to replace it. Many older homes in the Seattle area are still running on oversized, inefficient units that waste a significant amount of energy.

A new heating system isn't just about reliability; it's about getting the right size and type of equipment for your specific home. This is where most companies get it wrong. We start every project with a thorough evaluation of your home's layout, insulation, and ductwork. Our on-premises sheet metal shop is a huge advantage here, allowing us to fabricate custom fittings that ensure your new system integrates perfectly. This eliminates the airflow problems and inefficiencies common with off-the-shelf components.

A proper installation is the most important factor in the performance and lifespan of your new equipment. A high-efficiency furnace is worthless if it's not installed correctly. We ensure every unit we install is set up for optimal performance from day one, often pairing it with a proper Heating Maintenance & Tune-Up plan to protect your investment. Explore our complete Heating Installation & Replacement process to see how we handle planned system upgrades.

Heating Maintenance & Tune-Up

The single best way to avoid emergency repair calls is with routine, professional maintenance. Your furnace is a complex piece of machinery that runs hard during our long, damp winters. Over time, dust and dirt build up on critical parts, moving components lose lubrication, and safety controls can drift out of calibration. This forces your system to work harder, burn more fuel, and wear out faster.

A professional tune-up is more than just changing a filter. Our technicians perform a comprehensive cleaning and inspection designed to catch problems before they start. We clean the burners to ensure efficient combustion, check the heat exchanger for any signs of wear, test safety controls, and measure system performance to make sure you're getting the most out of every dollar you spend on energy.

Think of it like an oil change for your car; it’s a small investment that prevents huge, expensive problems down the road. Regular maintenance keeps your system running safely and efficiently, extends its lifespan, and keeps your manufacturer's warranty valid. Lock in proactive care with our Heating Maintenance & Tune-Up program.

Heating Inspection & Testing

Sometimes you need more than a simple tune-up; you need a definitive, in-depth assessment of your heating system's health and safety. This is common when you're buying or selling a home, as a standard home inspection often misses critical details about the HVAC equipment. You might also request an inspection if you've noticed a strange smell, have concerns about carbon monoxide, or simply want a clear, unbiased report on an aging system.

Our inspection and testing service is a comprehensive deep dive. We use specialized tools to perform combustion analysis, check for gas leaks, and test for carbon monoxide in your home's air. We conduct a thorough examination of the heat exchanger, which is the single most critical safety component in a gas furnace.

At the end of our visit, you'll receive a detailed report outlining your system's condition, efficiency, and any potential safety concerns. This gives you the concrete information you need to make smart decisions, whether you're negotiating a home purchase or planning for a future replacement. If our findings suggest a change is needed, a Heating Consultation can be the next logical step. Learn more about what our Heating Inspection & Testing service covers for homeowners across the region.

Heating Consultation

Feeling overwhelmed by your heating options? Whether you're facing an aging furnace, planning a home remodel, or just curious about newer technologies like high-efficiency systems or dual-fuel heat pumps, it's easy to get lost in the technical jargon. A heating consultation is designed to give you clear, honest answers tailored to your specific situation, not to push a particular product.

We'll sit down with you to understand your comfort goals, energy usage, and budget. We'll analyze your current system and home layout to explain the practical pros and cons of different options. This is an educational process, not a sales call. We want you to understand the trade-offs between a straightforward furnace replacement and upgrading to a more advanced system.

Our goal is to empower you with the knowledge to make an informed decision that you'll be happy with for years to come. With our deep experience as a Lennox Premier Dealer and nearly a century of work in Seattle Metro homes, we can provide insights and recommendations you can trust. Schedule a no-pressure Heating Consultation to explore your options.

Our Approach

Since 1938, Glendale Heating And Air Conditioning has operated on a simple principle: do the job right and treat people fairly. As a family-owned business, our reputation in the Seattle Metro community is everything. When you call us, you get a licensed, insured technician who is a direct employee, not a subcontractor. We start every visit with a thorough diagnostic to understand the real problem, then provide clear, upfront pricing before any work begins. There are no surprises.

We believe in craftsmanship, which is why we maintain our own on-premises sheet metal shop to create custom ductwork for a perfect fit. This commitment to quality ensures your system runs more efficiently and lasts longer. From the moment we arrive to the final cleanup, we treat your home with respect, delivering a level of service that’s become rare in this industry.

Related Services

A warm home is just one part of total home comfort. Many of our customers are now pairing their furnaces with a high-efficiency Heat Pump to get year-round heating and cooling from a single system. We also believe that a healthy home is as important as a comfortable one, which is why we offer a full range of Indoor Air Quality solutions. And to manage it all with maximum efficiency, a professionally installed Smart Thermostat gives you complete control over your comfort and energy use.

Your Home Deserves Reliable Warmth

Don't put up with a heating system that leaves you cold, worried, or paying too much. Whether you need an immediate repair, are planning a future upgrade, or want to keep your current system running at its best, our team has the experience to get it done right.

Reach out to Glendale Heating And Air Conditioning today and let us bring dependable, efficient warmth back into your home.

Questions Seattle homeowners ask us

Is a heat pump a good choice in Seattle?

Absolutely. Washington's mild winters are ideal for heat pumps — they heat efficiently nearly all year and cool your home in summer too. Ask us about current utility rebates that may apply to your home; it's one of the smartest upgrades a PNW homeowner can make.

How do I know if I should repair or replace my furnace?

It depends on age, repair cost, and efficiency. As a rule of thumb, if your system is over 12–15 years old and facing a major repair, replacement often saves money long-term. Our technician will give you the honest options so you can decide.

What brands do you install and service?

As an authorized Lennox dealer we specialize in high-efficiency Lennox systems, and our technicians service all major HVAC brands. We carry common parts on the truck so most repairs are handled in a single visit.

What areas does Glendale Heating serve?

We serve the Greater Seattle area — including Seattle, Bellevue, Renton, Kent, Burien, Des Moines, Federal Way, Auburn, Tacoma, and surrounding King and Pierce County communities. Not sure if you're in our area? Call (206) 243-7700 and we'll let you know.

More answers on the full FAQ page .

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Ready for comfort you can count on?

Whether it's a furnace that quit on a cold morning or a whole new system, the Glendale team is ready. Honest pricing, expert work, and 87+ years behind every visit.

Hours & Emergency

  • Mon–Sat: 8:00 AM – 7:00 PM
  • Sun: Emergency On-Call Only
  • Emergency line: (206) 243-7700