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Deer Park, WA

The Best Electricians, HVAC, and Plumbing Company in Deer Park

We offer the best, most reliable plumbing, electrical, heating & cooling services for homes in Washington and Northern Idaho.

Mainstream Technician High Fiving Truck

Deer Park Heating & Cooling

Heating, Cooling, & Plumbing Repair in Deer Park

Discover Mainstream Electric, Heating, Cooling, and Plumbing’s home services in Deer Park, WA, and nearby regions. At Mainstream, we’re committed to enhancing your home’s comfort with our expert team of technicians dedicated to exceeding your expectations. Whether it’s the scorching summers or the freezing winters in Deer Park, WA, Mainstream’s HVAC professionals have the skills and knowledge to handle any heating and cooling system efficiently. Our wide array of services includes expert repairs, maintenance, and installations for furnaces, boilers, air conditioners, and mini-split systems, ensuring your home remains comfortable year-round.

Mainstream Offers

Special Offers and Coupons

Our Services

Repair, Install, Service & More


Our electricians will help get the lights turned on in thousands of Spokane area homes.

Air Conditioning

A/C repair, installation, maintenance, and much more.


Our heating experts will help keep you warm in the winter.


Like most people, you might not think much about your plumbing – until something happens.

Drains & Sewers

Your drains are nearly invisible, but far from invincible. We’re here to help keep things flowing.

Air Quality

From indoor air quality testing to dehumidifiers to filter exchanges - we can help keep your air clean.

Maintenance Plan

Our membership program is crafted to offer peace of mind and comfort to every Spokane home, blending professional care with a touch of local charm.

The Mainstream Difference

Rethink Home Services with Mainstream - Your Trust, Our Promise.

At Mainstream, we redefine home service excellence, ensuring every interaction is designed with your satisfaction in mind.

Flexible Scheduling

We honor your busy schedule by offering flexible booking options that cater to your availability. Our 24/7 service readiness means urgent or regular maintenance is just a call away, ensuring we're there when you need us most — in Spokane, Northern Idaho, and places in between.

Transparent Pricing

Trust starts with transparency. That's why at Mainstream, you receive straightforward pricing without hidden fees. We focus on solving your problems, not upselling unnecessary services. Our commitment to honesty is echoed in thousands of positive customer reviews praising our integrity.

Expert Technicians

Mainstream stands out with a team that receives ongoing training in the latest home service technologies and adheres strictly to industry standards. We treat your home with the utmost respect and care, approaching every job with precision and professionalism to ensure superior results.

2 Mainstream Technicians Sitting in Truck

Home Maintenance Plans

Taking Care of Homes in Deer Park Since 2000

Choose Mainstream for all your home service needs in Deer Park, WA. With our commitment to customer satisfaction, competitive pricing, lifetime guarantee, and a team of skilled technicians, we’re here to ensure your home’s comfort and safety. Don’t wait – call or schedule an appointment online with Mainstream today, and experience the ultimate in home comfort services.

Call or Schedule Your Service Online!

Elizabeth Kriner
Elizabeth Kriner

They were prompt,accurate in their proposal

Paul and Shane Did a fine job of bringing me up to codes

via Google
S Brendemihl
S Brendemihl

Josh and Levi were fast, friendly and able to answer all my questions. Even my dumb ones 😉

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patsy moon
patsy moon

Ricky was so polite, I want to adopt him! He was worked his buns off! It was a difficult job but he refused to give up!! He danced a jig when he figured it out

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Nancy Betts
Nancy Betts

Anthony was very informative, helpful, and knowledgeable. His information helped make our decision on servicing our air conditioners. Great guy, too.

via Google
Warren Stout
Warren Stout

Original appointment rescheduled a week later. Plumber arrived 3.5 hours late (3:30 pm vs. original 8-12 am window). Personnel were friendly, professional and completed work requested. They left the job site clean and tidy. Cost seemed high…

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Mainstream Reviews

5-Star Service, Guaranteed.

We are Spokane’s premier home services company since 2000, with thousands of satisfied customers. Discover our latest reviews today!

Awards & Accreditations

Spokane's Finest

Mainstream® has earned the trust of the community, being recognized with the following awards and certifications.

Deer Park Electricians & A/C Repair

Get Peace of Mind With the Home Care Experts

Embrace unparalleled comfort in Deer Park, WA, with Mainstream’s leading air conditioning replacement and installation services. In a region where summers can turn from warm to scorching in the blink of an eye, having a reliable and efficient air conditioning system isn’t just a luxury—it’s a necessity. Mainstream is at the forefront of delivering advanced cooling solutions, ensuring your home remains a serene retreat from the outside heat. Our team of seasoned technicians specializes in customizing air conditioning systems to meet your unique needs, from initial installation to comprehensive replacements, making sweltering summers a thing of the past.

Mainstream also offers a full spectrum of electrical, heating, and plumbing solutions in Deer Park, WA. Our skilled electricians and plumbers work alongside our HVAC professionals to ensure your home operates seamlessly, providing a cohesive approach to your overall home comfort. Whether it’s maintaining your current systems or upgrading to the latest in home efficiency technology, our dedicated team is here to offer the support and expertise you need.

Choose Mainstream for a cooler, more comfortable home in Deer Park, WA. We’re not just about air conditioning; we’re about delivering peace of mind with a suite of services designed to ensure your home is the perfect haven, year-round. 

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