At NW Energy Conservation, we provide complete heating, cooling, duct, and indoor air quality services to keep your Renton property comfortable and efficient year-round. Based nearby, our family-owned team delivers professional, friendly service with the local knowledge Renton homeowners can trust.
Whether you live in Fairwood, the Highlands, or near Gene Coulon Park, we’re just a call away. We’ll be happy to quickly come out to your home or business.
We’re not a big corporate HVAC chain - we’re your neighbors. As a local company serving the greater Puget Sound, we understand Renton’s unique housing and weather patterns.
Here’s what makes Renton different - and why our expertise in our specific area matters:
• Proximity to Lake Washington means high humidity, especially in basements and crawlspaces.
• Older neighborhoods in Renton often have aging ducts that need cleaning or sealing to improve efficiency and system longevity.
• Developments in Fairwood that don’t have Air Conditioning installed yet have benefited from high-efficiency HVAC systems that provide comfort at an affordable cost.
Our technicians are trained to handle all of it - tailoring every solution to fit Renton’s homes, businesses, and climate.
Local Tip: Renton’s winters average 155 rainy days per year, and humidity levels above 80% are common. That’s why we focus on sealing ducts, balancing airflow, and improving indoor air quality for real comfort.
The work was completed at a very professional level. Everything was done neatly: the indoor unit was installed evenly, the ductwork was well insulated, and the outdoor unit was mounted securely and looks very tidy. After the installation, everything was cleaned up, which was a pleasant surprise. The system runs quietly and efficiently, and it’s clear that the technicians know their job well. I definitely recommend this company to anyone looking for quality installation and responsible service.
They always do a good job for a good price. Highly recommended.
NW Energy Conservation did an Awesome job! Great communication and really great to work with! Highly recommended!
This is the company who cares about customer, they did few jobs for me and I am always satisfied with their professionalism and creativity. Recommending for all!
I had our AC go down on hot day, we called Alex and they came out and saved the day. Great service and value.
Alex and his crew helped us with installing new Mitsubishi heat pump. We went with most efficient system and stayed within budget. Would recommend to friends and family for all hvac needs.
Once Aleks and crew started working on my system it's been a game changer. I even got a new unit installed from them and it's the best one in the house. It took them a few visits to fully diagnose as they didn't do the initial system install but they're super quick to respond and were easy to schedule with. They've completely overhauled a crappy install job from another company and my AC is much stronger and colder than before. He might not be the cheapest in town but the quality is much better than average and he charges what it needs to cost to do a good job and is quick to adjust anything afterwards if needed. Thank you!
Alex told me everything I needed to know about furnaces, what my options were, and that he could install a new unit that very day! I had to wait one day to get the estimate paperwork from both companies before I made the decision. Alex quoted me $400 less than the scary guy and had the unit installed the day after I called him. The tenant is happy, the furnace is great, and I saved a ton of money. Alex answered all my questions, was very responsive, and his employees were professional and helpful. Highly recommend!
When the wind rolls in off Lake Washington in the middle of winter, you’ll want your heating system running efficiently. We install, repair, and maintain furnaces, heat pumps, and ductless heating systems to keep your home cozy through those cold, damp months.
NW Energy Conservation Heating Services Include:
• Furnace installation, replacement & repair
• Energy-efficient heat pumps (for both heating & cooling)
• Ductless mini-split heating
• Maintenance & tune-ups for all systems
Energy Star Insight: Replacing a 15-year-old furnace with an Energy Star–certified model can save up to 15% on heating costs annually. Your system will work better and your wallet will feel better!
Renton may not see triple-digit summers very often, but when the sun hits hard in July, we all feel it. Paired with our recent record-breaking hot summers, older HVAC units sometimes just can’t keep up. Our air conditioning install and repair services help keep homes comfortable without sky-high electric bills.
NW Energy Conservation Air Conditioning Services Include:
• Central air conditioning installation & repair
• Ductless mini-split cooling for zoned comfort
• AC tune-ups & filter replacements
Fun Fact: Heat pumps can reduce electricity use for heating and cooling by 30–50% compared to electric resistance systems. Ask us for more details on this, we’d love to explain!
Local Insight: Renton’s mix of hilly terrain and split-level homes means temperature balance is key - we design systems that keep every level of your home evenly cooled.
Dirty, leaky ducts are one of the biggest causes of wasted energy and poor indoor air quality - especially in humid regions like ours.Our duct services combine negative-pressure cleaning, deep brushing, and leak sealing to restore efficiency and airflow.
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.
Air Duct Services Include:
• Cleaning & sanitizing to remove dust, mold, and allergens
• Duct sealing to prevent air loss
• Repairs, reconfiguration & replacement
• Airflow balancing for even heating & cooling
EPA Fact: The average home can lose 20–30% of conditioned air due to leaks, holes, or poorly connected ducts. That’s a lot of waste, and we can help stop it!
Your dryer vent could be a fire hazard without you realizing it. Dryers cause thousands of home fires annually, most due to lint buildup. Let’s prevent that for your home, for the safety of you and your loved ones!
We clean, inspect, and reconfigure dryer vents for safety and performance.
Dryer Vent Services Include:
• Deep lint brushing & vacuum cleaning
• Vent repair & reconfiguration
• Roof cap replacement
• Annual safety inspections
Local Note: Renton’s frequent rainfall increases vent moisture, which can trap lint and restrict airflow faster than in drier climates. Regular cleaning prevents blockages and reduces fire risk.
Indoor air pollution can be 2–5× higher than outdoor air, according to the EPA, and in Renton’s damp environment, mold and allergens thrive easily. This makes the perfect recipe for health issues for lungs, skin, and more.
We install modern IAQ solutions to help you breathe cleaner, fresher air year-round:
• UV light purifiers (kills bacteria, mold, and viruses)
• High-efficiency filtration (Honeywell, Aprilaire, HEPA)
• HRV & ERV systems for balanced fresh air
• Humidity control & dehumidifiers
Local Insight: During wildfire smoke events, Renton’s air quality index (AQI) often reaches unhealthy levels above 150. A healthy level is 50 or below, so it can get pretty bad here in the summers! Our filtration and HRV systems can reduce harmful particulates by up to 90%.
NW Energy Conservation is more than a service provider - we’re a local team that values relationships, craftsmanship, and integrity.
Local & Family-Owned: Based nearby, we serve Renton and all of King County.
Licensed & Insured: Certified professionals for your peace of mind.
Factory-Trained Technicians: Experts in Trane, Carrier, Mitsubishi, Honeywell & more.
Flexible Financing: Through Synchrony Bank - we help make upgrades affordable for your home.
Top-Rated Reputation: 5-star reviews from Renton homeowners and businesses.
We combine small-town service with big-city expertise, a great blend that over the years has made NW Energy Conservation a trusted name throughout the South Sound.
We provide HVAC, duct, and air quality services across Renton and surrounding areas:
• Renton Highlands • Fairwood • Benson Hill • Talbot Hill • Downtown Renton • Kennydale • Eat Renton Plateau • Cascade
Find Service Near YouWhether you live in a new home overlooking Lake Washington or a mid-century craftsman in the Highlands, we’re your nearby HVAC experts.
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