HVAC Repair and Install Services in Seattle, WA

Seattle has always had the rainy city reputation, and for good reason - but now in recent years it’s also been hitting hot weather records. This wide range in temperatures means that homes and businesses are usually dealing with fluctuating levels of air quality and various needs for their HVAC systems. These unique HVAC and indoor air quality challenges are well understood by the professionals at NW Energy Conservation. We bring trusted heating, cooling, duct, ventilation, and indoor air solutions to homeowners and businesses across Seattle, Bellevue, Capitol Hill, West Seattle, and the surrounding Puget Sound region.

Whether your furnace sputters in Ballard, your ducts leak in Queen Anne, or wildfire smoke creeps inside your Rainier Valley home, we’re here to provide expert service, clear communication, and long-term solutions for your HVAC needs.

An HVAC tech repairs a rooftop commercial unit in Seattle, WA.

Seattle’s Climate = Unique HVAC Challenges

Seattle’s mild, wet climate and high humidity mean HVAC systems face extra strain. Coils can get coated in grime, outdoor units corrode faster, and short heating or cooling seasons lead to intermittent cycling.

Recent summers have also pushed Seattle into more frequent heat waves - so much so that the city is no longer the “least air conditioned” U.S. city. That title is now held by San Francisco! That means more homes are relying on AC and mini-splits to stay comfortable during our hot (but beautiful) summer days.

Plus, air quality in Seattle is becoming a growing concern: The Puget Sound Clean Air Agency stresses that outdoor pollution influences indoor air quality, especially during wildfire smoke events. Their organization and King County warns that indoor pollutants can easily exceed outdoor levels, by 2–5× in some cases.

Because we live here, we know exactly how to design and build HVAC systems that address Seattle’s humidity, rain, smoke, and housing styles - from Craftsman to modern condos, from offices to restaurants.

What Your Neighbors Are Saying

Heating Services in Seattle

When winters in Seattle bring soggy cold and a drizzling rain that never ends, you need heating you can count on - without overpaying on energy. We provide furnace and heat pump services tailored for Seattle homes:

Furnace installation & repair (adjusted for Seattle’s mild winters that can have cold snaps)
Heat pump systems (dual heating + cooling)
Ductless mini-split heating for rooms without ducts (ideal for older homes)

We’ve helped homes in Ballard, Greenwood, Capitol Hill, and beyond. Our installers calibrate systems to Seattle’s typical temperature swings and humidity loads. We’re experts in our field and are glad to help you achieve comfort in your home or business!

Two outdoor HVAC units sit next to a red brick home in Seattle, WA.See Seattle Heating Options

AC & Ductless Services in Seattle

Seattle is seeing more days above 80°F. As a result, we’ve been installing a lot more AC units than in past years. In fact, Seattle homes with Air Conditioning went from 31% to over 50% in recent years. As heat waves become more common, having reliable cooling is no longer optional. If you’ve gone through a heat wave with nothing more than a fan and an iced drink, you know how important it is to have reliable comfort around the clock. Fortunately, we offer professional services in installing AC units, repairing AC units, and also maintaining them to prevent breakdowns in their much needed moments.

NW Energy Conservation offers these HVAC services:

Air conditioner installs & repairs
Ductless mini-split systems, typically for retrofitted spaces or older homes
Heat pump cooling (dual use for AC and heat)

For Seattle homes with limited duct space — think row houses, older homes, or additions — ductless systems are smart, efficient solutions.

HVAC technician cleans out home air ducts from pet dander and dust in Seattle.

Air Duct Cleaning, Repair & Sealing in Seattle

Seattle’s homes have been around a while - and as a result, often have older or leaky ductwork. With coastal moisture, ducts can also collect mold, dust, and allergens more easily. Leaky ducts can waste up to 30% of your heated/cool air  - that’s a huge energy drain for your home and wallet.

NW Energy Conservation provides:

Full-system air duct cleaning with deep brushing & negative pressure
Duct inspections & diagnostics
Sealing & insulation to stop leaks
Repairs or reconfigurations

Book Duct Cleaning in Seattle

Indoor Air Quality & Ventilation in Seattle

Seattle’s air is often considered clean, but indoor air tells a different story. According to the Washington State Dept. of Health, indoor pollutants can rise significantly, especially when ventilation is poor.Seattle also frequently experiences pollution from wildfire smoke during the summer. The Puget Sound Clean Air Agency emphasizes that during smoke events, using filters, purifiers, and ventilation systems is critical. Taking steps like these can help keep your health on track, preventing issues for you and your loved ones.Clean air is essential to a healthy home. From wildfire smoke in summer to mold-prone crawlspaces in winter, we help Fife homeowners breathe easier year-round. This service can help your sinuses, overall health, and preventing bad odors lingering inside your home

Ask us about our process in improving your indoor air quality. Our IAQ & ventilation services include:

UV light purifiers
HEPA/advanced filtration
HRV/ERV systems for fresh air exchange
Exhaust fan upgrades & duct ventilation
Humidity control systems

We’ve helped Seattle homes stay comfortable and healthy - whether it’s filtering wildfire smoke, balancing humidity in foggy winters, or ventilating tight homes in Capitol Hill. We’re ready and equipped to help your home or business too!

Dryer Vent Safety in Seattle

Lint fires are one of the most preventable home hazards. The NFPA reports 16,000 house fires yearly linked to dryers. That is a huge number for something that is completely avoidable. Fortunately, our professional team is well-versed in this field and can help you today.

Our Seattle dryer vent services include:

Deep lint cleaning
Vent repair or replacement
• Reconfiguration for longer duct runs to make sure they’re safer and code-compliant
Safety inspections

Given Seattle’s damp climate and compact urban layouts, vents often route long distances or through tight spaces - making regular cleaning critical.

An HVAC pro pulls out significant lint buildup from a dryer  vent in Seattle.
An HVAC pro repairs a commercial unit on a Seattle, WA rooftop.

Commercial & Multi-Family HVAC in Seattle

Seattle has a dense, vertical housing market. We provide HVAC maintenance, HVAC installs, duct cleaning, and air quality solutions for apartments, condos, retail spaces, and offices across neighborhoods like Belltown, Pioneer Square, South Lake Union, and more.

We build preventive maintenance programs to control costs and ensure system longevity - critical in Seattle’s unique building environments.

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Why NW Energy Conservation Stands Out in Seattle

• Local: We are always in the Seattle area serving our neighbors
Licensed & insured professionals
Factory-trained technicians for all major HVAC, duct, IAQ brands - rest assured knowing that we’re experts
• Transparent pricing + financing options
Highly rated reviews from Seattle & Puget Sound homeowners

A view of the floating bridge from a Seattle neighborhood on a hot summer day.
Puget Sound map includes Seattle, where NW Energy Conservation operates.

Neighborhoods We Serve in Seattle

We proudly serve all corners of Seattle, including:

• Capitol Hill • Ballard • Fremont • West Seattle • Queen Anne • University District • South Lake Union • Beacon Hill

Find Service Near You

Whether you’re near Lake Union, tucked into the hills, or on the waterfront, we’re your local HVAC, duct, and air quality experts.