Business Details
32 Years
experience
Emergency
services
Your Trusted Partner for HVAC & Plumbing Solutions
Gasline Mechanical was founded in 1994 with a commitment to delivering exceptional HVAC and plumbing solutions. Our team of skilled professionals brings decades of combined experience to every project, specializing in commercial-grade residential installations, sheet metal fabrication, and large-scale ductwork systems. We pride ourselves on designing systems that prioritize efficiency, reliability, and long-term performance, serving both residential and commercial clients across North King County and Snohomish County, WA.Our approach combines technical expertise with a dedication to customer satisfaction, ensuring every installation meets exacting standards. We invest in training programs to share industry-leading practices and maintain a focus on innovation, from zoned ducted systems to radiant floor heating. With a legacy of trust built through partnerships with major regional companies, we continue to evolve while maintaining our core values of quality and integrity.
Services
AC Repair
Heating Installation
Sheet Metal Fabrication
Generator Installation
Ductwork Sealing
Plumbing Services
Boiler Installation
VRF Systems
Radiant Floor Heating
Oil to Gas Conversion
Details
- Year established: 1994
Highlights and features
- We offer 24/7 emergency HVAC and plumbing services for urgent needs.
- Our team specializes in commercial-grade residential HVAC installations.
- We provide custom sheet metal fabrication for precise system requirements.
- Our zoned ducted systems ensure consistent temperature control and efficiency.
- We maintain industry-leading standards through technician training programs.
What people say
Professionalism and teamwork
Great work and reliability
Quick response times
Meticulous installations
Expertise in complex systems
Services
AC Repair
Our AC repair services address cooling system malfunctions promptly, ensuring optimal performance during peak summer months. We diagnose and resolve issues with compressors, refrigerant levels, and electrical components. Our technicians use advanced tools to restore efficiency and extend system lifespan for residential and commercial properties.
Heating Installation
We specialize in installing high-efficiency heating systems tailored to property specifications. Our process includes load calculations, ductwork optimization, and integration with smart thermostats. We prioritize energy savings while ensuring consistent warmth distribution across multi-level homes and commercial spaces.
Sheet Metal Fabrication
Our in-house sheet metal fabrication creates precision-engineered duct systems for unique architectural requirements. We produce components that enhance airflow efficiency and reduce energy consumption. This service supports large-scale commercial projects and complex residential installations requiring non-standard dimensions.
Generator Installation
We install standby generators to maintain critical operations during power outages. Our team handles gas piping, electrical integration, and waterproofing for reliable performance. Systems are configured for automatic activation, ensuring uninterrupted comfort for homes and businesses.
Radiant Floor Heating
Our radiant floor heating solutions combine forced-air systems with hydronic technology for superior comfort. We design installations that eliminate cold spots in kitchens, bathrooms, and basements. This energy-efficient option provides even temperature distribution for multi-level properties.
People
John Anderson
President
With over 30 years in HVAC contracting, John founded Gasline Mechanical in 1994. He oversees operations and maintains client relationships, leveraging expertise in commercial-grade residential systems. His leadership focuses on technical excellence and long-term client partnerships.
Julie
Office Manager
Julie coordinates project logistics and client communications, ensuring seamless service delivery. Her organizational skills maintain operational efficiency across residential and commercial projects, earning consistent client praise for responsiveness and professionalism.
Questions
What HVAC services do you offer for residential clients?
We provide AC repair, heating installation, ductwork sealing, and zoned system solutions tailored to residential needs.
Do you handle commercial HVAC projects?
Yes, we specialize in large-scale commercial installations, including VRF systems and custom sheet metal fabrication.
Are emergency services available after hours?
Our 24/7 emergency service ensures immediate assistance for urgent HVAC or plumbing issues.
What areas do you serve?
We operate in Snohomish County, WA, including Everett, Mill Creek, Monroe, and Woodinville.
Do you offer generator installation services?
Yes, we install and maintain standby generators with integrated gas piping and electrical connections.
How do you ensure system efficiency?
We combine commercial-grade components with precision ductwork design to maximize energy savings and performance longevity.
Reviews (4)
Bob Jones
Apr 28, 2026
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horrible lack of response to multiple polite phone calls and texts asking for someone to come onsite and review our system they installed a few years ago. Leaking freon and wasting time and money trying to get help from this company. Their entire service department phone tree menu forwards to AJ, whose voicemail is turned on permanently, never answers, and never calls back. Their entire sales department phone tree menu rings to a full voicemail box. How does a company function like this ?
Judy Flanagan
Jan 17, 2022
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A PSE inspector determined our 15-year-old furnace was emitting high levels of CO and capped off the gas line to our furnace. A big thanks to the inspector to catching that! John Anderson and his crew from Gasline Mechanical ordered and replaced the furnace within 5 days. We appreciate his fast response (especially considering the issues with shipping delays and the icy roads). This is the third time we've worked with Gasline Mechanical. They've been great to work with.
Klaus Hann
Oct 29, 2017
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Many Years ago Gas line Mechanical installed our Heating system that was quite involved with 3 Floors. The Basement was left unfinished, But they installed a Duct system that could be extended for future use. After 18 Years I upgraded to a new High efficiency Furnace and Air conditioning. The new contractor admired the original installation and how well it was done. This prompted me to write these comments. I remember the original installer and how well they did their work. I believe the owners name was John. I want to thank him for a good Job they did all these years later.
Malaki Smith
Apr 02, 2016
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One of their drivers became involved in a road rage incident with me because I honked at him when he didn't respond to a light turning green. I cannot imagine someone wanting this psychopath into their home or business.
