Furnace Doctors

Licensed Heating Services in Mercer Island, Washington

When your heating or cooling system stops doing its job, you need an HVAC company that knows how to solve the problem properly. With more than 45 years of industry experience, Furnace Doctors provides dependable heating services in Mercer Island for homes and businesses, backed by factory-trained technicians and generations of hands-on knowledge.

Call Today At (888) 414-4328 (HEAT)

Emergency Service Available

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About Us

Furnace Doctors was founded in 1986 as a family-owned and operated business, building on an HVAC tradition that began decades earlier. The family entered the industry in 1953, and that legacy continues today through second-generation ownership and active third-generation involvement. We’ve completed thousands of successful installations while building our business largely through referrals and long-standing customer relationships. We handle heating and cooling service, installation, repairs, and maintenance, making Furnace Doctors your one-stop HVAC shop. We’ve always focused on what matters most: expert service, dependable equipment, skilled workmanship, and results designed for long-term performance. Learn More

Heating Services

Cold temperatures can quickly reveal problems with your heating system. Furnace Doctors handles heating installation, maintenance, service, and repair with dependable performance as the priority. Whether you’re dealing with an unexpected failure or planning an equipment upgrade, our experienced technicians can identify the problem and provide a practical path forward.

Air Conditioning Services

When your space starts getting uncomfortably warm, Furnace Doctors can help get your cooling system back on track. We service, repair, maintain, and install air conditioning equipment for homes and businesses. With experience across all makes and models, our trained technicians provide knowledgeable, professional attention to your cooling equipment.

HVAC Installation

The performance of a new HVAC system depends heavily on its equipment, design, and installation quality. Thousands of completed installations have given Furnace Doctors extensive experience working with high-quality HVAC equipment and materials. With custom sheet metal fabrication available in-house and in the field, we can approach installations with greater control over fit, quality, and performance.

HVAC Maintenance & Repair

A small HVAC issue can become a much larger inconvenience when it is ignored. Furnace Doctors provides professional repair and maintenance to help keep heating and cooling equipment operating properly. HVAC trouble doesn’t always follow a convenient schedule, which is why our on-call service department provides after-hours assistance.

Why Choose Us

For decades, our company has continued growing without the need for expensive TV and radio campaigns. Quality workmanship and customer referrals have built the reputation we have today. Because we keep our work in-house instead of subcontracting it, we can oversee quality from start to finish. Our extensively trained, factory-certified technicians are supported by an in-house fabrication shop, mobile sheet metal capabilities, and a licensed electrician for more demanding HVAC projects. Long-tenured employees bring decades of practical experience to our company, providing customers with the benefit of seasoned HVAC knowledge.

Furnace Doctors - servicing Mercer Island, Washington

Look No Further for Heating Services in Mercer Island, WA

Working with Furnace Doctors gives you access to a team capable of addressing much more than a simple HVAC repair. Because our technicians are factory trained and certified, our work stays in-house, and we maintain custom sheet metal and electrical capabilities, we can address the system as a whole. A comprehensive approach can make an important difference when the problem extends beyond one component.

From troubleshooting and maintenance to fabrication, electrical needs, replacement, and complete installations, our team applies decades of hands-on HVAC experience. Our focus is quality workmanship supported by materials and equipment chosen for dependable long-term performance.

Get in Touch Today

Your HVAC system plays too important a role in everyday comfort to trust it to guesswork. With 45-plus years of industry experience, factory-trained technicians, in-house resources, after-hours assistance, and generations of family knowledge, Furnace Doctors is prepared to help.

Whether you need help with a breakdown, scheduled maintenance, or complete equipment replacement, Furnace Doctors is ready to respond. Contact Furnace Doctors today and put decades of hands-on heating and cooling experience to work for your property.

    
 
 
       Posted on Google  
   
   EK - Mad Kandi 
 July 8, 2026
 
 
  JJ and the team saved us!

Our unit completely stopped working on one of the hottest days and thankfully we were able to get these guys out same day, while other places told us next day.

Thank you!
  
 
      Posted on Google  
   
   SAMARTH SHETTY 
 June 17, 2026
 
 
  I had a great experience with Furnace Doctor.
Rhett arrived on time, quickly diagnosed the issue, added refrigerant, and had my AC running properly again in no time. He was professional, efficient, and explained what he was doing without trying to upsell unnecessary work. The whole process was smooth and stress-free.
  
 
      Posted on Google  
   
   S T 
 June 16, 2026
 
 
  Came same day - and fixed our central air conditioning had the needed part on em which was great.
  
 
      Posted on Google  
   
   Vinay N K 
 May 13, 2026
 
 
  Had a great experience with Furnace Doctors. Technician JJ was extremely knowledgeable and took a very systematic approach to troubleshooting and diagnosing our HVAC issue. He carefully checked all components, including temperatures, capacitor functioning, and coolant levels, and thoroughly tested the system after the repair to confirm everything was working properly. JJ explained the process clearly and was professional throughout the visit. Really appreciated the attention to detail and confidence in the work performed. Highly recommend! The poor ratings online did not reflect the experience I had.

Need Professional HVAC Help?

Furnace Doctors

Proudly Serving the Greater Seattle Area!

Auburn, WA 98002

furnacedoctorsinc@aol.com
(888) 414-4328