Family looking out window at snow
Heating & Cooling

Your Comfort,
Our Priority

Heating and cooling for Washington homes. Same-day service. Upfront pricing.

Licensed & Insured
4.9★ Rating
15+ Years
Book Online Call Now
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Licensed & Bonded in Washington ♦ 24/7 Emergency Service Available ♦ 4.9-Star Rated on Google ♦ All Major Brands Serviced ♦ 2,500+ Homes Served ♦ Upfront Pricing — No Hidden Fees ♦ Licensed & Bonded in Washington ♦ 24/7 Emergency Service Available ♦ 4.9-Star Rated on Google ♦ All Major Brands Serviced ♦ 2,500+ Homes Served ♦ Upfront Pricing — No Hidden Fees
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Heating & Cooling

Our HVAC Services

Repairs, installs, and tune-ups for every season.

Air conditioning installation and repair

Air Conditioning

Repairs, tune-ups, and new installs. All major brands. Cool when you need it.

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Furnace installation and repair

Furnace

Gas and electric furnace install, repair, and maintenance. Every major brand. Upfront pricing.

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Heat pump system

Heat Pump

Heat and cool with one system. Lower bills. Built for the Pacific Northwest.

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Ductless mini split system

Mini Split

No ducts? No problem. Zone-by-zone comfort for any room.

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Indoor air quality solutions

Indoor Air Quality

Purifiers, UV lights, and filtration for cleaner air at home.

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Smart thermostat installation

Thermostat

Nest, Ecobee, Honeywell — installed and dialed in for lower bills.

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24/7 Emergency Service

Heat or AC down? We respond fast — day or night.

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Next Phase Heating, Air Conditioning team with service vans
15+
Years Serving
Washington Families
Why Next Phase

The Next Phase Difference

Old-school craftsmanship, modern tools. Service that puts your home first.

Upfront Pricing

Know the cost before work begins. No surprises, ever.

Licensed & Insured

Fully certified techs you can trust in your home.

Same-Day Service

Fast response when your comfort is on the line.

All Brands Serviced

Every major HVAC brand.

Warranty on Work

Our work is backed by a satisfaction guarantee.

Real Communication

We answer your calls and explain everything clearly.

Save Money

Cut Energy Costs by Up to 30%

Smarter HVAC upgrades pay you back every month.

High-Efficiency HVAC

Modern heat pumps deliver 2–3× the comfort per dollar of energy.

2-3x more efficient

Smart Thermostats

Smart thermostats learn your schedule so you stop paying for an empty house.

24/7 smart optimization

Preventive Maintenance

Tune-ups and safety checks catch small problems before they get expensive.

30% energy savings
Simple Process

How It Works

Three simple steps to total home comfort.

Book online scheduling form
1

Schedule

Call or book online. Pick a time that works.

HVAC technician servicing a Trane air conditioner with gauges and tools
2

Diagnose

Our tech shows up, finds the issue, walks you through your options.

Technician with happy customer
3

Resolve

We fix it right the first time.

Schedule Service Today
Testimonials

What Our Customers Say

Real reviews from real Washington homeowners.

"Furnace quit on us mid-January. Called Next Phase around 9am and they had someone here by lunch. Turned out it was the ignitor — guy replaced it, tested everything, and we had heat again before the kids got home from school."

JM
Jessica M.
Covington, WA

"AC went out during that crazy heat wave last summer. I called like four companies and nobody could come out. Next Phase showed up the next morning and had it fixed by noon. They've got a customer for life now."

SK
Sarah K.
Kent, WA

"We switched from our old furnace to a heat pump and the difference is wild. House stays comfortable and our electric bill actually went down. The installer walked us through the thermostat settings and everything. No complaints at all."

MT
Maria T.
Renton, WA

"Furnace quit on us mid-January. Called Next Phase around 9am and they had someone here by lunch. Turned out it was the ignitor — guy replaced it, tested everything, and we had heat again before the kids got home from school."

JM
Jessica M.
Covington, WA

"AC went out during that crazy heat wave last summer. I called like four companies and nobody could come out. Next Phase showed up the next morning and had it fixed by noon. They've got a customer for life now."

SK
Sarah K.
Kent, WA

"We switched from our old furnace to a heat pump and the difference is wild. House stays comfortable and our electric bill actually went down. The installer walked us through the thermostat settings and everything. No complaints at all."

MT
Maria T.
Renton, WA
Summer home

Stay Cool

Beat the Washington heat with reliable cooling.

  • AC repair & installation
  • Efficiency tune-ups
  • Smart thermostat setup
Cooling Services
Winter house

Stay Warm

Never shiver through another Pacific Northwest winter.

  • Furnace repair & replacement
  • Heat pump installation
  • Emergency heating service
Heating Services
Coverage

Areas We Serve

Proudly serving communities across the greater Puget Sound region.

King County

Covington Kent Maple Valley Auburn Renton Federal Way Covington Bellevue Issaquah Sammamish

Snohomish County

Everett Lynnwood Edmonds Marysville Lake Stevens Bothell Snohomish Monroe

Pierce County

Tacoma Puyallup Lakewood Bonney Lake University Place Graham Sumner Buckley
Got Questions?

Frequently Asked Questions

Quick answers to what homeowners ask most.

Emergencies: a few hours, day or night. Standard calls: same-day or next morning. We give you a specific arrival window — no all-day waits.

Yes — free estimates on new installs and replacements. For repairs, we give you the price upfront before any work begins.

Every major brand — Carrier, Lennox, Trane, Rheem, Bryant, Goodman, Daikin, Mitsubishi, and more. For new installs, we help you pick the right system for your home.

Twice a year — spring for AC, fall for heat. Tune-ups extend system life and catch small issues early.

Yes. Flexible financing on new installs and replacements. Quick application, straightforward terms — ask during your free estimate.

Have a question not listed here? We are always happy to help.

Contact Us

Satisfaction Guaranteed

100% happiness or we make it right

No Hidden Fees

The price we quote is the price you pay

Background Checked

Every technician is vetted and trained

Clean Home Promise

We leave your home cleaner than we found it

Winter house scene
Ready to get started?

Experience the
Next Phase Difference

Trusted by thousands of Washington homeowners for heating and cooling.

Book Online (425) 648-7887
Licensed & Insured 4.9-Star Rated 24/7 Emergency Free Estimates