Full-Service HVAC Installation in Sammamish

A Higher Standard Company. The GREENTOP Difference

Comfort starts here—and stays here in Sammamish. GREENTOP delivers honest, expert HVAC service tailored to the Sammamish Plateau’s homes and climate. We show up on time, fix it right, and treat your home like our own—no shortcuts, no surprises, just clear options and dependable results.

Sammamish-Ready Comfort, Year-Round

Sammamish climate considerations for HVAC comfort

Warm, dry spells in summer. Cool, wet winters. Seasonal pollen and smoke that can challenge indoor air. Our recommendations fit Sammamish realities—efficient cooling for upstairs bedrooms, steady winter heat for multi-level layouts, and cleaner air for busy households and home offices.

Service for all major HVAC brands and models
Load-based sizing, verified airflow, and documented commissioning
Licensed, bonded, insured team with clean workmanship
Flexible financing options available on approved credit

Cooling Services in Sammamish

From tune-ups to full replacements, we keep living rooms, lofts, and bonus rooms comfortable during Sammamish heat waves. Our vehicles are stocked with common parts to complete most AC repairs in a single visit.

AC repair, replacement, and seasonal maintenance
High-efficiency central systems and smart thermostats
Precise diagnostics for refrigerant, electrical, and airflow issues
Clear, written options before any work begins

Heating & Heat Pumps

Quiet, even warmth without the guesswork. We service gas furnaces and heat pumps, with special focus on right-sizing and safe operation for Sammamish homes—from split-levels to newer constructions.

Furnace and heat pump repair, replacement, and tune-ups
Cold-climate heat pump options for efficient year-round comfort
Ignition, sensor, and ventilation testing for safety and reliability
Post-service performance checks you can see

Ductless Mini-Splits

Ductless mini-split installation in Sammamish

Ideal for additions, home offices, or rooms that never feel quite right. Single- and multi-zone systems deliver targeted comfort with excellent efficiency—well suited to Sammamish’s mild winters and summer spikes.

Design, installation, and commissioning
Discreet indoor units with precise, room-by-room control
Maintenance and repairs for long-term performance

Ductwork & Airflow

Comfort isn’t just about equipment. We seal, balance, and optimize ducts to reduce losses, quiet the system, and even out temperatures across floors common in Sammamish layouts.

Airflow diagnostics and static pressure testing
Duct sealing and balancing to fix hot-and-cold spots
Return air improvements for quieter, more efficient operation

Maintenance, Repairs & Clear Pricing

Clear pricing and responsive HVAC service

When comfort can’t wait, we respond quickly—with transparent estimates and follow-up to confirm results. Preventive plans include seasonal tune-ups timed to Sammamish’s heating and cooling seasons, priority scheduling, and member savings on repairs.

Same-day estimates when available
24/7 emergency service for no-heat/no-cool situations
Member plans with reminders, safety checks, and performance tests

Note: We do not service boilers or radiant floor heating.

Serving neighborhoods across Sammamish, including Pine Lake, Trossachs, Klahanie, Sahalee, Beaver Lake, and surrounding areas.

2582 clients have trusted us in Sammamish, WA and nearby areas

Very pleased with GreenTop heating n cooling. Andres the estimator gave me a fair offer, good follow ups and was super responsive. Even after they finished their work they answered my questions. Hena and Oleksi the installers were very professional and did a great job.

GreenTop came today on relatively short notice to fix our furnace that was not working. The technician was very friendly and was able to diagnose and get the furnace running again. Thank you so much!

Great job! The technician passed by to check our furnace and give us a quick diagnostic after checking the unit. The sales rep called us a few minutes later with the estimate and the guy came back the next day with the parts. They were polite and profesional during the process. And the price was more than fair. Recommended!

I have a 45-year-old gas furnace that needed routine maintenance. The first company I called said my furnace was too old to be serviced but they would sell me a new one. Then I called GreenTop and they promptly sent out a tech who serviced the old furnace and gave it a clean bill of health, at a very reasonable price. They saved me a lot of money.

I am very happy with Green top heating and cooling. They did a wonderful job with installing the mini split for me. I work with Andrea's. He was nice and Always on time ,very reliable, excellent service. I highly recommend them. Thank you

Arrived right on time. Did a great job diagnosing the problem with our Mitsubishi HVAC and got it running during the diagnostic process. We are very happy!

Igor and Yaroslav replaced our furnace and provided excellent service and cleaned up afterwards. Thank you!

Green Top offered a very competitive bid for installing a Mitsubishi S-Series heat pump at my home. Everyone I interacted with there was very professional. The technicians who installed my heat pump, Mark and Henadii, worked very hard to complete the job in one day. Now I am enjoying the comfort and savings from my new heat pump, I love it.

Out of many HAVC companies, I choose GreenTop. Vlad and Olexii do great job installing the new furnace. They clean everything afterwards. Very professional and friendly. Also, Andres is a good sales/estimator, He answers all my questions patiently and gives fair quote. I highly recommended GreenTop.