For an on-site estimate on a new system or ductwork is free of charge. If you are needing an estimate on repairs, our technicians will need to diagnose your system for a dispatch fee and our hourly rate, call for our current rates.

A DOAS is a Dedicated Outside Air System which is a Washington state code requirement as of 2015 in all commercial applications.

Your HVAC efficiency level might decline when it doesn’t receive proper maintenance. Your system will need a regular check-up, cleaning, or lubrication to work smoothly and avoid short & long-term costly repairs.

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.

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.

You should have your Heat Pump & Furnace serviced every 6 months ideally.

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.

It all depends on which type of system you have, the sizing of the equipment and the complexity of your project. Our estimators will be able to assist you with a free estimate on a new replacement system.

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.

Absolutely. We service every major furnace brand regardless of who installed it, including systems we are seeing for the first time.

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.