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9926 Elliott Road, Snohomish, WA 98296

(425) 476-1304 Schedule Service

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Woodinville, WA

Comprehensive HVAC and Plumbing Services in Woodinville, WA

Woodinville residents deserve heating, cooling, and plumbing systems that perform flawlessly throughout the Pacific Northwest’s varied seasons. At Gasline Mechanical Inc., we understand the unique climate challenges this region presents, from damp winters that strain heating systems to increasingly warm summers that demand reliable air conditioning. Our full-service design-build approach ensures every installation meets the highest standards of efficiency and durability.

We’ve established ourselves as the premier HVAC contractor serving Woodinville by combining technical expertise with an unwavering commitment to perfection. Our capabilities extend far beyond basic installations – we handle everything from intricate sheet metal fabrication to piping some of the largest gas systems in Washington state. When we take on a project, whether it’s a new construction installation or a complex retrofit, we approach it with one guiding principle: “It’s a matter of pride.”

Air Conditioning Installation and Service Excellence

The demand for air conditioning in Woodinville has grown significantly over the past decade, with average summer temperatures climbing and heat waves becoming more frequent. We specialize in designing and installing cooling systems that not only handle current conditions but anticipate future needs. Our installations incorporate advanced zoning technology, allowing homeowners to maintain different temperatures in various areas of their homes while maximizing energy efficiency.

Our AC service extends beyond simple maintenance checks. We perform comprehensive system evaluations that examine refrigerant levels, electrical connections, condensate drainage, evaporator and condenser coil conditions, and overall system performance. This thorough approach helps identify potential issues before they escalate into costly repairs. We also educate homeowners about optimal thermostat settings, filter replacement schedules, and signs that indicate when professional service is needed.

Plumbing Repair and System Upgrades

Woodinville’s older neighborhoods often feature homes with aging plumbing infrastructure that requires expert attention. We handle everything from minor fixture repairs to complete repiping projects. Our plumbing services include:

  • Emergency leak detection and repair using advanced diagnostic equipment
  • Water heater installation and maintenance for both traditional tank and tankless systems
  • Drain cleaning and sewer line services including video inspection capabilities

Water quality concerns in the region make proper plumbing maintenance especially critical. Hard water conditions can accelerate pipe corrosion and fixture deterioration, making regular inspections essential for preventing unexpected failures. We help homeowners understand how local water conditions affect their plumbing systems and recommend appropriate solutions, from water softeners to specialized fixtures designed for longevity.

HVAC Installation and Retrofit Expertise

Our HVAC installation capabilities set us apart in the Woodinville market. We’re equipped to handle ductwork of any size – in fact, no one else in our area can manage the large-scale duct systems we routinely install. This expertise proves invaluable for both residential and commercial projects, where proper sizing and installation directly impact system efficiency and indoor air quality.

Retrofit projects present unique challenges that we’re specifically equipped to handle. Older Woodinville homes often have outdated heating systems that waste energy and provide inconsistent comfort. We excel at designing retrofit solutions that work within existing structural constraints while delivering modern efficiency and performance. Our sheet metal fabrication capabilities allow us to create custom ductwork that fits perfectly in challenging spaces, ensuring optimal airflow throughout the structure.

Training and Industry Leadership

Our expertise extends beyond serving individual customers – we actively share our knowledge with other contractors. We offer training to other dealers on proper zoning system installation, helping raise industry standards throughout the region. This commitment to education reflects our broader philosophy: when the entire industry improves, everyone benefits.

The waterproof flashing techniques we’ve perfected are particularly relevant in Woodinville’s wet climate. Improper flashing around HVAC penetrations remains a leading cause of water damage in homes. Our installation teams understand the critical importance of these details, ensuring every roof penetration is properly sealed against moisture intrusion.

The Gasline Mechanical Inc. Difference

What truly distinguishes us is our approach to problem-solving. When challenges arise – and they inevitably do in complex mechanical systems – we always ask ourselves, “How can we make it right?” This mindset drives us to find solutions that not only address immediate concerns but prevent future issues.

Our commitment to 100% perfection in every installation isn’t just a goal – it’s a standard we maintain through rigorous quality control processes, ongoing training, and investment in the latest diagnostic and installation equipment. Whether we’re installing a simple AC unit or designing a complete HVAC system for a new construction project, we bring the same level of dedication and expertise to every job in Woodinville.

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Why Choose Gasline Mechanical Inc.
  • Residential heating and cooling services, including installation of energy-efficient systems.
  • Custom sheet metal fabrication to ensure optimal performance and durability.
  • Home generator solutions to provide reliable backup power for uninterrupted comfort.
  • Plumbing services designed to foster a healthier and more efficient indoor environment.
Contact Gasline Mechanical Inc. For All Of Your HVAC and Plumbing Needs

Furnace Repair in Woodinville, WA | Heating Service

AC RepairHeating ServiceAir Conditioning ServiceAC InstallationFurnace Repair ∴ Woodinville, WA

What our customers are saying
Customer Reviews

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.

Judy F.

Residential Customer
GASLINE was great to work with from start to finish. The decision was hard to put in A/C but now that I have, I haven’t regretted it one bit. Darren and the guys were easy to work with and if I hada question, it was answered. They took care of everything for US!! they were Professional, on time, the work was meticulous and complete. This is a quality company and the staff reflected that in their care for the work they performed!!

Ryan & Melissa S.

Wakefield / The Evans Company
Ed and I were talking today about the salon and Gasline’s part in this project and other past projects. You guys are the best. From John on down, your company always does great work and your crew is first rate and a pleasure to work with. You guys are truly full service!!! Thank You!!Thought You Should Know,

Pat T.

Venture General Contracting, LLC
Robbie and Mike were a big help yesterday in coordinating the Phased Occupancy Opening here(Othello Station North). Wehad to get down and get some details worked out and the knowledge between those two was extremely helpful! I would not be able to do it without these guys!

Chad W.

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.

Klaus H.

Venture General Contracting, LLC
To our Office Manager, Julie: Thank you so much for being so wonderful! It’s been a pleasure working with you. I look forward to many more projects to come.

Galyna S.

Wakefield / The Evans Company
It has been my great pleasure to work with Gasline Mechanical on a number of projects. We have worked together for many years. I can count on their professionalism and teamwork to hold to schedule while providing a high quality finished product. From new construction to maintaining the equipment after our spaces are occupied, Gasline comes through with viable solutions to our most challenging HVAC needs. I look forward to continuing our working relationship and would highly recommend Gasline Mechanical.

Ed B.

As the owner of Fusion Hot Yoga, located in Bothell, voted “Best yoga studio” in the “Best of Western Washington” contest, you can imagine how important “good” heat is to us! We heat our room to 105 degrees (!) and I’ll tell you what, heating a space to 105 that is built for over 100 people practicing yoga at once, well it’s simply not an easy task! Yet Gasline has managed to do it! We are currently running at 105 degrees due to Gasline’s ingenuity, and perseverance. I can’t recommend Darren and Steve enough! These guys are amazing. If you need to heat something, trust Gasline and trust Darren and Steve. These guys won’t let you down. I hesitate to endorse anybody, as I want to make sure It’s a valid and founded endorsement. And I take using my platform for endorsement very seriously… And in my experience Gasline now deserves my endorsement. So come feel the heat! And call Gasline for all your heating needs! If they can heat us, they can heat you! Thank you Steve and Darren! Jason Willey, owner Fusion Hot Yoga.

Jason W.

Testimonials:Aeronautical Firm located in Chicago, Seattle, and North Carolina
As a large commercial aerospace company, we have a large variety mechanical and HVAC systems. Gasline Mechanical has been our go to contractor for many projects in severalof our buildings. With projects ranging from small to large scale ductwork jobs, to large scale cooling tower replacement jobs, to custom stainless steel humidification system work, Gasline has always met or exceeded our performance expectations and completed all of the projects on budget and on time.

Brad L.

I just want to thank you again for responding so quickly to the issue at ConAm. I know the owner appreciates it to. I really enjoy working with you and your guys and want you to know how much you are appreciated by all of us at Venture.

Jen C.

Goodman Real Estate
I have worked with John Anderson and his employees at Gasline Mechanical for many years. Gasline can create heating, cooling and air-exchange systems in detail and to exact specifications from the drawing board to your construction site.

The Gasline design team can either quote & build from an engineered plan or create a design build system and are competitive in either arena. Once complete they have a very good warranty or maintenance team that can keep your equipment fine-tuned.

They understand how a system functions can either enhance or hamper the comfort of our buildings tenants. In addition to Gasline’s expertise in design, the install team has a great attitude and they clearly take pride in their work. I haveworked with many contractors and few can perform at Gasline’s level.You cannot make a better choice.

Bruce M.
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Woodinville, WA