We know the systems we work on
Knowing every system we service means accurate, correct work the first time. No guesswork that costs you a second visit.
Serving all of Washington
Westside Comfort Solutions is an HVAC and electrical contractor in Renton, WA serving homes and businesses across Washington. We fix what others say can't be fixed, and we won't sell you a new unit unless you truly need one.
Licensed & insured · Mitsubishi Diamond Contractor · 24/7 emergency service
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What we do
Pick the side that fits you. Home or business, in Renton or anywhere in Washington, every job gets the same honest diagnosis and code-correct work.
Heating, cooling, air quality, and electrical for homeowners across Washington, plus 24/7 emergency service. Straight answers, an accurate diagnosis, and only the work you actually need, done right the first time.
Mechanical construction and ongoing service for general contractors, builders, and business owners across Washington. New construction, tenant improvements, and a service company you can keep calling.
How it fits together
Click any marked point on the house to see how that part keeps your home comfortable, and the service that installs, repairs, and maintains it.

The duct runs carry conditioned air to every room. Leaky or undersized ducts waste energy and leave rooms uneven, so we inspect, seal, and balance them as part of the job.
The thermostat is how you actually run the system. We set up smart and zoned controls so your home heats and cools on your schedule instead of running around the clock.
Wall-mounted heads heat and cool a room without ductwork, zone by zone. As a Mitsubishi Diamond dealer we size and install them so each space stays comfortable and the bills stay sane.
The air inside a home is often dirtier than the air outside it. Whole-home filtration, purification, and fresh-air ventilation clean what your family breathes, sized correctly for your space.
The furnace or air handler is the heart of the system. We repair what other companies write off, and when replacement is the honest answer we install American Standard and Mitsubishi equipment.
The outdoor unit moves heat into your home in winter and back out in summer. A right-sized heat pump is the single biggest comfort-and-efficiency upgrade most Washington homes can make.
Why Westside Comfort Solutions
Westside Comfort Solutions is a licensed mechanical contractor in Renton, WA serving homeowners, business owners, and builders across Washington. Owner Joshua Ferrell built the team around one principle: know the heating, cooling, and electrical systems well enough to fix them right the first time.
What sets us apart
Knowing every system we service means accurate, correct work the first time. No guesswork that costs you a second visit.
If a repair is the honest answer, that's what you'll hear. We've fixed systems other companies called impossible and tried to replace.
Attention to detail on everything we touch, charged at a fair rate. Everyone deserves to be comfortable in their own space.
The honest option
Tell us what's going on. You'll get a straight diagnosis and a fair quote, not a sales pitch.
The Westside Comfort Solutions difference
Honest diagnostics
When something breaks, you get the real diagnosis, not the easiest part to sell. We've repaired systems other companies wrote off and tried to replace. If a repair is the honest answer, that's what you'll hear, and we won't sell you a unit you don't need.
Fair, transparent pricing
Quality work at a fair rate, because everyone deserves to be comfortable in their own space. Need to spread the cost of a larger job? Financing is available, alongside card, check, and Venmo or Zelle.
24/7 service & maintenance
No heat in a cold snap or no cooling in a heat wave can't sit until morning. Our 24/7 emergency line prioritizes no-heat and no-cool calls across Renton and all of Washington.
The best emergency is the one that never happens. Seasonal tune-ups catch small problems before they become no-heat nights and keep your manufacturer warranty intact. We back installs with up to a 12-year manufacturer warranty and a 1-year workmanship guarantee on everything we touch.
Where we work
We serve homes and businesses statewide, from the Greater Seattle area to the South Sound and beyond.
See service areasProof
Joshua replaced my AC mini-split and did an excellent job. He was professional, knowledgeable, and took the time to explain everything clearly. The installation was done quickly and with great attention to detail, and the system has been running perfectly ever since. I really appreciate the honest service and would highly recommend Joshua and his team to anyone needing HVAC work.
Questions
Correct. If your system can be repaired honestly, that's what we'll recommend. We've fixed systems other companies said were impossible and tried to replace. We only recommend a new unit when it's genuinely the right call.
We're based in Renton and serve the entire state of Washington, from the Greater Seattle area and the South Sound to statewide commercial projects.
Yes. We offer financing alongside cash, card, check, and Venmo/Zelle so you can get comfortable in your space without paying everything up front.
Yes. We're licensed (WESTSCS752MT) and insured, and we're a Mitsubishi Electric Diamond Contractor and an American Standard dealer.
Up to a 12-year parts and compressor warranty on Mitsubishi systems and up to 10 years on American Standard, plus a 1-year workmanship guarantee on everything we do. We handle the manufacturer registration for you, so you don't miss the window that unlocks the full term. Optional extended 5/10/12-year labor warranties are also available through JB Warranties.
Yes. We're open 24 hours a day, 7 days a week, including emergency service. Call whenever something can't wait.
Both. We handle residential heating, cooling, air quality, and electrical, plus commercial mechanical construction, refrigeration, HVAC, and kitchen equipment.
Get started
Tell us what's going on. We'll diagnose it right and only recommend what you actually need.
Licensed WESTSCS752MT · Insured · Mitsubishi Diamond Contractor · 24/7 Emergency Service