HVAC Maintenance in Greater Seattle Area
Stay comfortable year-round with expert HVAC maintenance you can trust. Our NATE-certified technicians service furnaces, heat pumps, and AC systems with care and clear communication. We bring over three decades of experience and a 4.7 rating from 569 reviews. Serving the Greater Seattle Area, including Seattle, Bellevue, and Everett. Book your tune-up today, and get ahead of the season before summer heat or the first cold snap.
What can you expect to pay?
How customers feel about the bill, in their words.
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Why Choose Us
NATE-certified technicians
Decades of experience
Top-brand expertise
24/7 availability
Proven customer trust
What Our Customers Say
professionalism
“We just had our annual maintenance and it was done very professionally.”
communication
“Kenneth did a great job on our routine maintenance appointment and had great communication.”
quality
“Vitali serviced our HVAC system and was super thorough with a deep cleaning.”
A standard HVAC maintenance visit includes cleaning the system, replacing the air filter, checking the thermostat, and verifying each part operates correctly. We also perform general cleaning and inspections, measure temperatures, and check electrical readings. For geothermal and heat pump systems, we check air and loop‑fluid temps, flow rates, and voltage. Service covers ACs, furnaces, boilers, ductless systems, and water heaters. Available across Bothell, Bellevue, and Seattle.
Updated: 2025-12-19
Need help in Bothell, WA? Call (425) 827-9997 or book online.
A typical HVAC maintenance checklist covers system inspection, thorough cleaning, lubrication, and safety checks performed during a tune-up. Most issues begin with dirt and restricted airflow; if something is found, technicians complete diagnostics on site and can often fix it immediately from fully stocked vans. Many homeowners opt into a planned maintenance program that provides automatic once- or twice‑yearly inspections and reminders. We provide this maintenance for homes throughout the Everett area.
Common checklist items include:
- Inspecting or replacing the air filter
- Verifying thermostat operation
- Cleaning the blower, fan blades, and condensate drain line
- Lubricating motor parts
- Checking for heating leaks, cracks, or wear
- Ensuring electrical components are safe, functional, and free of rust or corrosion
Schedule maintenance ahead of heavy use and replace a dirty filter as soon as you notice it.
Updated: 2026-04-03
Need help in Everett, WA? Call (425) 827-9997 or book online.
An AC tune-up service includes a preventive inspection, cleaning, and adjustment to improve safety, airflow, and efficiency and return the unit to proper operating condition. The most common focus is restoring cleanliness and confirming controls so the system cools reliably under summer load. During your appointment, we inspect, clean, and adjust the system, and if we find issues we can often fix them on the spot because our vans are stocked with common parts. After service, our 6-month No-Breakdown Guarantee applies: if the system fails, you get a no-cost diagnosis, priority scheduling, and your tune-up charge credited toward the repair. Our crews perform these tune-ups for many homes around Bellevue.
Typical tasks include:
- Inspecting the air filter.
- Verifying thermostat operation.
- Cleaning components including the blower, fan blades, and condensate drain line.
- Lubricating motor parts and checking for leaks or wear, with an electrical safety check for corrosion.
Replace your air filter between visits and keep the outdoor unit clear of debris to help the system run smoothly.
Updated: 2026-05-01
Need help in Bellevue, WA? Call (425) 827-9997 or book online. "Kenneth did a great job on our routine maintenance appointment." — MacKenzie A.
An HVAC tune-up with Cardinal Heating & Air is typically a flat promotional rate. Recent promotions listed $99 for A/C or furnace tune-ups and $129 for geothermal tune-ups. Final pricing can vary by system type and condition, and your technician confirms costs on site. In Seattle, Kirkland, and nearby cities, a tune-up generally includes cleaning, replacing air filters, and checking the thermostat.
Updated: 2025-12-10
Need help in Seattle, WA? Call (425) 827-9997 or book online.
Still have questions?
Have questions or need service? Contact our team today to discuss your needs, request a quote, or schedule an appointment.