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Leading A/C and Heating Contractor in Seattle

When your Heating and Air Conditioning systems are functioning at its best, it not only creates a comfortable environment, it also protects your home or office from humidity and moisture problems, increases indoor air quality and reduces energy costs. We carry the top furnaces, heat pumps, water tanks, fireplaces and AC units, from America’s most trusted name brands. Washington Natural Gas is the greater Seattle areas choice for fast, friendly and affordable HVAC service. We are the leading heating contractor Seattle.


Washington Natural Gas Heating & Air Conditioning supplies air conditioning and heating repair and also installation services in Seattle. We are one of the top air conditioning companies in Seattle that is devoted to quality in our service, as well as we mount high quality brand names.

OUR HVAC Services


For your complete residential heating and air conditioning repairs, let the professionals at Washington Natural Gas take care of you, for all your heating and cooling comfort needs. With our service team members,we will provide you with the best system for your needs at the best value.

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• Furnaces
• Air Conditioning Units
• Heat Pumps
• Water Heaters
• Ductless Heating and Cooling
• Natural Gas and
• Propane Fireplaces

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Furnaces, Air Conditioning Units, Heat Pumps, Water Heaters, Ductless Heating and Cooling, Natural Gas and Propane Fireplaces, HVAC maintenance and a regular system check are the best method to extend the life of your heating and cooling equipment while minimizing your home energy costs.

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Our Greater Seattle indoor air experts offer on-site air quality examinations, and pursue allergy and asthma relief. We can make the air inside your home as clean as a hospital surgery suite at an affordable price.

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Heating & AC Service Seattle

Areas We Serve:

Alderwood Manor


Arlington Heights




Echo Lake



Lake Stevens



Martha Lake



Black Diamond




Des Moines



East Hill-Meridian

East Renton Highlands


Clyde Hill

Cottage Lake

Heating contractor -install new air conditioning unit

HVAC Brands We Service


Matt was very friendly and professional. Made a point to acknowledge my kids that kept pestering him. Great service!

The technician was very thorough and explained clearly what issues he found.

Outstanding customer service

The team was professional, efficient and maintained a clean work area. The arrived on time and completed the install of furnace and air conditioning on two separate days. The team was friendly and considerate of my privacy and property. They kept me informed of progress.

The two installers, I forget their names, were perfect.
Same goes for the two electricians, Dave and his partner, perfect.

Technicians were on time and were very professional and very informative –
Good work

She was very knowledgeable and pleasant!

Technician was fast and friendly, what more could I ask for?

He was friendly, thorough and informative. I appreciate that.

Matt was very friendly and professional. Made a point to acknowledge my kids that kept pestering him. Great service!

Very polite person and on time.Thank You

Matt did a great job of explaining the problem with my furnace. Also, he was very professional, and did not pressure me to buy a replacement part I did not currently need. Excellent customer service and very trustworthy. Will be calling WNG in the future for my servicing and repair needs. Thank you!

For Fast & Responsive Service

Call (425) 355-3331 | (206) 464-1999 or use the contact form

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