Furnace Repair in Bellingham, Ferndale & Whatcom County
Licensed Heating Technicians — 24/7 Emergency No-Heat Service Since 1990
Locally Owned and Operated
Smith Mechanical is proud to be a family-run locally owned and operated business in Whatcom County!
Get in touch today!
Years repairing furnaces in Whatcom, Skagit & Island Counties
Emergency furnace service when YOU need it most
Homes and businesses across Northwest Washington served
Furnace Repair Services
Our Furnace Repair Services
Smith Mechanical provides expert furnace repair for homes and businesses across Northwest Washington. From gas and electric furnaces to ductless heat pumps and smart thermostats, our factory-trained technicians find the fault fast and fix it right the first time — so your heat is back on the same day whenever we can manage it.
Furnace Diagnostics & Troubleshooting
Short cycling, banging on startup, a burning smell, or a thermostat that calls for heat and gets nothing — we trace it to the actual cause instead of guessing. Our techs test igniters, flame sensors, limit switches, gas valves, control boards and airflow, then walk you through what we found and what it costs to fix.
Emergency Furnace Repair
A dead furnace in a Whatcom County winter is not something that waits until Monday. We offer 24/7 emergency furnace repair across Bellingham, Ferndale, Lynden, Blaine and beyond, with trucks stocked for the most common failures — ignition components, blower motors, capacitors, pressure switches and thermostats.
Gas & Electric Furnace Repair
Natural gas, propane and electric furnaces all fail differently. Our licensed technicians service all of them, including high-efficiency condensing units with clogged condensate lines and sealed-combustion venting. We are also gas-certified, so cracked heat exchangers and carbon monoxide concerns get handled safely, not deferred.
Heat Pump & Ductless Heating Repair
Heat pumps and ductless mini-splits need specialized service — defrost boards, reversing valves, low refrigerant charge and auxiliary heat strips are all common culprits in our damp coastal climate. We repair ducted and ductless systems from every major manufacturer.
Smith Mechanical
Heating
Heating Services
Stay warm through wet Northwest winters with professional heating solutions from Smith Mechanical.
Ductless & Heat Pump Heating
Repair and service for mini-splits and heat pumps across Whatcom, Skagit and Island County, including defrost and auxiliary heat faults.
Furnace Installation & Replacement
When a repair no longer pencils out, we will size and install the right system for your home. Learn about furnace replacement.
IAQ
Indoor Air Quality (IAQ) Solutions
Sealed-up houses and a running furnace make winter the hardest season on indoor air. Smith Mechanical offers professional IAQ products and services to keep the air in your home clean while your heat is on.
Whole-home air purifiers
Pair whole-home air purification with your furnace to remove dust, allergens, odors, and airborne contaminants as air circulates through your home. Installed directly into your HVAC equipment for cleaner, healthier air in every room.
UV Germicidal Lights
Installed inside your heating system, UV germicidal lights neutralize mold, bacteria, and viruses as air passes over the coil — keeping your equipment clean, your air fresher, and your system running more efficiently.
Humidifiers & Dehumidifiers
Dry winter air makes a heated house feel colder than it is. Whole-home humidifiers and dehumidifiers ease the load on your furnace, reduce allergens and moisture problems, and help your system run more efficiently year-round.
Duct Cleaning & Sealing
Leaky, dusty ducts rob your furnace of efficiency and pump contaminants into every room. We clean and seal your ductwork to boost heating performance, reduce energy bills, and deliver cleaner air throughout your home.
ABOUT US
We Are Available For 24/7 Emergency Furnace Repair
Fast response times and fully licensed heating technicians ready to help — day or night.
Since 1990, Smith Mechanical has been the trusted heating, HVAC and refrigeration company serving Northwest Washington. From Bellingham to Oak Harbor, our licensed technicians deliver reliable, around-the-clock furnace repair with honest work, expert care, and lasting solutions.
24/7 Emergency Service –
Day or night, our team is ready to restore your comfort fast.
Trusted Since 1990 –
Decades of proven experience in heating, cooling, and refrigeration across Northwest Washington.
Smith Mechanical 6146 Portal Way Ferndale, WA 98248
Email us :
service@smithmechanical.com
Call us :
360-384-3203
OUR OPERATION
That's How Do We Work
1
Book Online Or Give us a Call
2
We Diagnose the Problem
3
Your Technician Arrives
4
We Get Your Heat Back On
ONLINE BOOKING
Professional Furnace Maintenance Will Save Time And Money
TESTIMONIALs
What Our Clients Say About Us
Our customers are at the heart of everything we do. From quick repairs to full system installations, homeowners and businesses across Northwest Washington trust Smith Mechanical for reliable service, honest communication, and results that last.
Installed new furnace in my home when the cold weather hit suddenly and my furnace was dead. Fantastic crew.. left everything spotless. Special thanks to Kristian for the referral and help getting everything done.
Leslie Ash
Jan 9,2020
Smith Mechanical installed a new furnace and did a fantastic job from start to the finish. The follow up was very will done. I would recomend the company to anyone who need this type of work.
Spiro Pappacostas
May 8, 2023
Fast, friendly, courteous respectful, reasonable rates
Clint Cagey
June 18, 2025
These guys are PROS! On time to every appointment, Zach and his crew did a top shelf job installing my new furnace and rehanging my broken ducting. The price was VERY reasonable, and the finished work is A+! Would recommend to ANYONE looking for honest work for an honest price.
Jake Waschke
May 1, 2018
Should You Repair or Replace Your Furnace?
If your furnace is under 15 years old and the repair costs less than a third of a new system, repairing is almost always the right call. Once you are paying for repeated repairs on an aging unit — or a technician finds a cracked heat exchanger — replacement becomes the safer, cheaper path. We will tell you honestly which side of that line you are on, and we are happy to repair a furnace we think has years left in it. Learn more about furnace replacement.
Furnace Repair Across Whatcom, Skagit & Island County
Smith Mechanical repairs furnaces throughout Northwest Washington from our shop at 6146 Portal Way in Ferndale. We serve Whatcom County — Bellingham, Ferndale, Lynden and Blaine; Skagit County — Mount Vernon, Burlington, Sedro-Woolley and Anacortes; Island County and Whidbey Island — Oak Harbor, Coupeville and Freeland; plus North Snohomish County and the San Juan Islands. Do not see your town? Call 360-384-3203 — we probably cover it.
Furnace Repair FAQs
How much does furnace repair cost in Bellingham?
Most residential furnace repairs in Whatcom County land in a common range depending on the part — an igniter or flame sensor is at the low end, a blower motor or control board at the high end. We diagnose first and give you a firm price before any work begins, so you are never guessing.
Do you offer emergency furnace repair?
Yes. Smith Mechanical provides 24/7 emergency furnace repair across Whatcom, Skagit and Island County. If your heat is out, call 360-384-3203 — day, night, weekend or holiday.
My furnace turns on then shuts off after a minute. What is wrong?
That is short cycling, and the usual causes are a dirty flame sensor, a clogged filter restricting airflow, or a failing limit switch. It is worth fixing promptly — short cycling wears out components fast and can point to an overheating problem.
How fast can you get to my house?
From our Ferndale shop we reach most of Bellingham and Ferndale within the hour on emergency calls. Lynden, Blaine, Mount Vernon and Oak Harbor typically see same-day service.
Do you repair furnaces you did not install?
Absolutely. We service every major furnace brand regardless of who installed it, including systems we are seeing for the first time.
Is a cracked heat exchanger dangerous?
Yes — a cracked heat exchanger can leak carbon monoxide into your home. If we find one, we will shut the furnace down and walk you through your options immediately. This is one of the few faults where replacement is almost always the right answer.
Smith Mechanical's Services
Furnace Installation
Upgrade your comfort with a professionally installed, energy-efficient furnace from Smith Mechanical. Our licensed technicians help you choose the right system for your space and budget, ensuring reliable heat and lower energy costs all winter long.
Furnace Replacement
When it’s time to replace or upgrade your heating system, trust Smith Mechanical for expert installation. We’ll help you select the ideal heater for your home or business and install it for maximum comfort, efficiency, and long-term reliability.
Furnace Repair
If your furnace isn’t keeping up, making strange noises, or won’t start at all, our expert technicians can help. Smith Mechanical provides fast, dependable furnace repair to get your heat back on — safely, efficiently, and affordably.
HVAC Repair
When your heating or cooling system breaks down, Smith Mechanical is ready to help. Our skilled technicians quickly diagnose and repair HVAC issues to restore comfort, efficiency, and peace of mind — available 24/7 for emergency service.
Ductless Heat Pumps
Enjoy year-round comfort and energy savings with a ductless heat pump system. Smith Mechanical installs and services high-efficiency ductless units that provide both heating and cooling — the perfect solution for homes without ductwork or for adding zoned comfort to any space.
AC Maintenance & Repair
Keep your cooling system running at its best with regular AC maintenance from Smith Mechanical. Our thorough inspections, cleanings, and tune-ups improve efficiency, prevent breakdowns, and help extend the life of your air conditioner.
AC Installation
Ensure you stay cool and comfortable with professional AC installation from Smith Mechanical. We install new units, configure components, and set up your system to improve airflow, enhance cooling performance, and reduce energy costs.
Ductless Air Conditioner
Experience efficient, targeted cooling with a ductless air conditioner from Smith Mechanical. Perfect for homes or offices without existing ductwork, these systems offer quiet operation, zoned temperature control, and energy savings all season long.
Commercial AC Repair
When cooling issues threaten your business, Smith Mechanical delivers fast, reliable commercial AC repair. Our certified technicians service all major systems to restore comfort, protect equipment, and keep your operations running smoothly — with 24/7 emergency availability.
Refrigeration Repair
Keep your products and equipment at the right temperature with expert refrigeration repair from Smith Mechanical. We service walk-ins, reach-ins, coolers, and freezers for restaurants, breweries, farms, and commercial facilities — minimizing downtime and protecting your inventory.
Refrigeration Installation
Smith Mechanical specializes in professional refrigeration installation for commercial and industrial applications. From walk-in coolers to custom cold storage systems, we design and install reliable, energy-efficient solutions to keep your business running smoothly.