Furnace Repair & Replacement
Expert furnace diagnostics, repair, and replacement — keeping Puget Sound homes warm and safe.
QC Mechanical provides comprehensive furnace services including emergency repair, routine diagnostics, and full system replacement. From heat exchanger inspections and safety checks to high-efficiency furnace installations from American Standard and RunTru by Trane, our NATE-certified technicians deliver reliable results.
Get Your FREE Estimate Today!
Fast response from certified HVAC professionals
What Our Customers Say
Real feedback from homeowners and businesses across the Puget Sound region.
Why Choose Furnace Repair & Replacement
Furnace Repair and Diagnostics
A furnace that is not operating correctly can be more than an inconvenience — it can be a safety concern. Gas furnaces produce combustion byproducts that must be properly vented, and a cracked heat exchanger or faulty gas valve can pose risks to your household. QC Mechanical takes furnace diagnostics seriously and follows thorough safety protocols on every service call. Common furnace problems include failed ignitors, dirty flame sensors, malfunctioning gas valves, faulty limit switches, blower motor failures, clogged condensate drains (on high-efficiency models), and control board faults. Our technicians use combustion analyzers, multimeters, and infrared cameras to identify the exact cause of the problem and verify that repairs restore safe, efficient operation. We repair gas furnaces, electric furnaces, and oil furnaces from all major manufacturers. If your furnace is making unusual noises, failing to ignite, short-cycling, producing weak heat, or tripping safety limits, call QC Mechanical for a professional diagnostic before the problem worsens.
- Ignitor, flame sensor, and gas valve repair or replacement
- Heat exchanger inspection using combustion analysis and visual examination
- Blower motor, capacitor, and control board diagnostics
- Condensate drain cleaning and repair on high-efficiency models
- Safety switch and limit control testing
- All major furnace brands serviced
Furnace Replacement
When a furnace reaches the end of its useful life — typically 15 to 25 years — or when a major component like the heat exchanger fails, replacement becomes more cost-effective than continued repairs. QC Mechanical installs high-efficiency gas furnaces from American Standard and RunTru by Trane, delivering reliable warmth and lower energy bills. Modern furnaces with AFUE ratings of 95% or higher convert nearly all the fuel they consume into usable heat. Compared to an older 80% AFUE furnace, a high-efficiency model can reduce your heating fuel costs by 15–20%. Variable-speed blower motors further improve efficiency and comfort by running at lower speeds most of the time, reducing energy use and operating noise while maintaining consistent temperatures. For homeowners considering the transition from gas to electric, we also offer heat pump alternatives that provide both heating and cooling without combustion. Our team helps you evaluate the options and choose the solution that best fits your home, budget, and long-term efficiency goals.
- High-efficiency gas furnaces with 95%+ AFUE ratings
- American Standard AccuComfort and Gold Series furnaces
- RunTru by Trane reliable-value furnace models
- Variable-speed and multi-stage blower motor options
- Heat pump alternatives for homeowners considering electrification
Systems & Equipment We Work With
American Standard AccuComfort Platinum Gas Furnaces
American Standard Gold and Silver Series Gas Furnaces
RunTru by Trane Gas Furnaces
High-Efficiency Condensing Furnaces (95%+ AFUE)
Standard-Efficiency Gas Furnaces (80% AFUE)
Electric Furnaces
Oil Furnaces
The Advantages of Professional Furnace Repair & Replacement
Our Furnace Repair & Replacement Process
Schedule Service
Call us to describe the issue. For no-heat emergencies, we prioritize same-day or next-day service when possible.
Safety and Diagnostic Check
Our technician performs a safety inspection including heat exchanger examination, combustion analysis, and systematic diagnostics to identify the problem.
Diagnosis and Recommendation
We explain the findings, provide repair options with pricing, or recommend replacement if the repair is not cost-effective given the age and condition of the furnace.
Repair or Replacement
With your approval, we complete the repair using quality parts, or we install a new high-efficiency furnace sized and configured for your home.
Safety Verification
After any repair or installation, we run combustion analysis, verify CO levels, test all safety controls, and confirm the system is operating safely and efficiently.
Walkthrough and Documentation
We explain what was done, provide maintenance recommendations, and for new installations, register your warranty and walk you through the system controls.
Furnace Service and Replacement Costs
Furnace repair costs depend on the nature of the problem and the parts required. Replacement costs vary by furnace type, efficiency level, and installation complexity. QC Mechanical provides clear pricing before performing any work.
- Common furnace repairs (ignitors, flame sensors, capacitors) are typically resolved in a single visit
- Major repairs (blower motors, control boards, gas valves) are quoted after diagnosis
- High-efficiency furnace replacement typically ranges from $4,500 to $9,000+ depending on model and installation requirements
- Variable-speed and multi-stage furnaces cost more upfront but deliver lower operating costs and better comfort
- Energy-efficient replacements may qualify for utility rebates and federal tax credits
Why Choose QC Mechanical for Furnace Repair & Replacement
- NATE-certified technicians specializing in furnace diagnostics and repair
- Combustion analysis and safety testing on every furnace service call
- American Standard and RunTru by Trane factory-authorized installations
- Honest repair vs. replacement recommendations with no sales pressure
- Emergency no-heat service with priority scheduling
- Serving King, Pierce, Kitsap, and Thurston counties for over 25 years
Service Area
Furnace Repair & Replacement Across the Puget Sound
QC Mechanical provides furnace repair & replacement services throughout King, Pierce, Kitsap, and Thurston counties.
Furnace Repair & Replacement — Frequently Asked Questions
If your furnace is less than 12–15 years old and the repair cost is reasonable, repair usually makes sense. If the furnace is older, requires frequent repairs, has a cracked heat exchanger, or operates at low efficiency (80% AFUE or less), replacement with a high-efficiency model is often the better long-term investment.
Yes. A cracked heat exchanger can allow carbon monoxide to enter your home's air supply. If a crack is detected during our inspection, we recommend immediate action — either replacing the heat exchanger or replacing the furnace, depending on the unit's age and condition.
With proper maintenance, gas furnaces typically last 15 to 25 years. High-efficiency condensing furnaces may have slightly shorter lifespans due to the corrosive nature of the condensation process. Regular annual maintenance is the best way to maximize your furnace's lifespan.
AFUE stands for Annual Fuel Utilization Efficiency. It measures how efficiently a furnace converts fuel to heat. A 95% AFUE furnace converts 95 cents of every dollar spent on fuel into usable heat. Higher AFUE means lower fuel costs.
It depends on your home, energy costs, and preferences. Heat pumps are more efficient and provide both heating and cooling, but they rely on electricity. We can assess your home and help you compare the long-term costs and benefits of each option, including available rebates for heat pump installations.
We recommend an annual furnace inspection and tune-up before each heating season, typically in fall. This includes a safety check, combustion analysis, and cleaning to ensure safe, efficient operation throughout the winter months.
We install gas furnaces from American Standard and RunTru by Trane. These brands offer a range of efficiency levels and features to match different budgets and performance requirements. We also service and repair furnaces from all major manufacturers.
Yes. We repair electric furnaces in addition to gas models. Common electric furnace issues include failed heating elements, sequencer problems, and blower motor failures. Our technicians diagnose and repair all types of electric furnace equipment.
Get a Free Furnace Repair & Replacement Quote
QC Mechanical provides honest assessments and transparent pricing. No pressure, no upselling — just expert guidance from certified HVAC professionals.
253-293-2769Related Services
New Construction HVAC
Custom HVAC design and installation for residential and commercial new builds across the Puget Sound region.
Learn MoreCommercial HVAC
Full-service commercial heating and cooling for offices, retail, restaurants, industrial facilities, and multi-family buildings.
Learn MoreRetrofit & System Upgrades
Upgrade your existing HVAC system to modern, energy-efficient equipment without major structural changes.
Learn More