Furnace Tune-Up


Seattle Furnace tune ups save energy

Every aspect of furnace maintenance is covered in our signature Precision Tune-Up, and it’s performed by our experienced, NATE certified technicians. Your furnace runs a good portion of the year here in Western Washington. Preserve your heating system investment and your equipment’s efficiency with annual maintenance.

Save money by joining the Guardian Maintenance Club. See club information for discount details.

** Unable to service condos or multi-family homes at this time.

Easy scheduling

1. Purchase online

Simply add the item to your cart and purchase through our safe and secure site.

2. We’ll call you to schedule a service date

We find a time to come out that’s most convenient for you.

Included in tune-up

37-point inspection

Our inspection is a comprehensive look at your system. Among our 37 check points, we’ll check:

  • remove and clean flame sensor, burners, pressure port, condensate drain system
  • inspect heat exchangers
  • check/adjust inlet gas pressure, outlet low-fire gas pressure, hi-fire gas pressure
  • inspect blower wheel, test blower motor capacitor
  • Record delta T, measure air static
  • check for CO and CO2
  • tighten all electrical connections
  • check continuous fan switch
  • inspect flue for corrosion/leaks
  • replace batteries as needed in thermostat
  • inspect condition of ductwork
  • clean or replace standard size 1” or 4” filters


Check for gas leaks and carbon monoxide

Make sure your system is safe.

Written checklist

We’ll provide you with a document showing the results of our inspection.

Join the Guardian Maintenance Club

The equipment in your home needs to be maintained every year to keep your systems running efficiently and effectively. When you join the Guardian Maintenance Club, you save money on annual tune-ups and gain an ongoing discount you can use throughout the year.

Take care of your systems and keep them performing for years to come. Available for heating, cooling, tankless water heaters, generators and gas fireplace inserts.

Learn More