Why Your Air Filter Is the Unsung Hero of Your HVAC System
And how a 5-minute fix can save you from a big headache Let’s be honest—when was the last time you changed your air filter? If you’re scratching your head or…
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Office@denalihvac.com
Phone Number
(360) 274-8049
Address
125 Mosier Rd, Castle Rock, WA 98611
Denali is built on trust, powered by people.
Precision for Pros. Comfort for Home.
Built on Honesty. Carried forward with heart.
Denali is a Mitsubishi Diamond Elite Contractor and American Standard dealer delivering trusted comfort to families and businesses.
We Service All Types & Brands of Equipment
Your #1 Trusted HVAC Power Partner
We’re a Mitsubishi Diamond Contractor and certified American Standard distributor—bringing top-tier comfort to families and businesses every day. We can service any type of equipment, Residential, Commercial and Industrial.
HVAC's Highest Retention Employer
About Us
Troy Franklin's Dream: A Great Place To Work.
Denali is led by Mrs. Molly Franklin and her dedicated team. As a Mitsubishi Diamond Contractor and certified American Standard dealer, Denali brings top-tier heating and cooling to homes and businesses across the region.
Our Vision
- Be a Great Place to Work
- Excellent Service Always
- Local 66 Sheet Metal Workers Union Members
Our Priorities
- Customer First Pricing
- Top Tier Equipment
- Warrantied Installs
New Installs
Our Mitsubishi Installs Come With a 12 Year Warranty!
- American Standard Dealer
- Mitsubishi Diamond Dealer
Heaters & Air Conditioners
Financing Available
4,201
18/20 SEER
A Variable Speed HVAC system runs at many different speeds, not just high or low. That means it can adjust smoothly to keep your home at the perfect temperature all day—quietly and efficiently.
You get better comfort, lower energy bills, and fewer temperature swings.
Backed by a 12-Year Warranty for peace of mind from Denali HVAC.
2,094
Quest 18
A Multi-Speed HVAC system runs at a few different speeds—so it’s more flexible than single-speed systems but not as advanced as variable speed. It still gives you better comfort and efficiency without running full blast all the time.
It’s a great balance of performance and value, perfect for everyday comfort.
The Quest comes with a 10-Year Warranty for dependable peace of mind.
897
14 SEER
A Single-Stage HVAC system runs at one speed—full blast or off. It’s the most affordable option to install, making it a great fit for tight budgets or smaller spaces.
While it doesn’t offer the energy savings of more advanced systems, it’s reliable, straightforward, and gets the job done.
Backed by a 10-year warranty.
6,431
Mitsubishi Ductless
Mitsubishi Ductless systems give you heating and cooling without the need for ductwork—perfect for bonus rooms, garages, additions, or even the whole house.
Each indoor unit works independently, so you can control the temperature in each room. That means no wasted energy and custom comfort where you need it most.
They’re super quiet, energy-efficient, and sleek in design.
Duct Cleaning Service
Our expert team helps homeowners improve indoor air quality by removing dust, debris, allergens, and buildup from your HVAC system.
Regular air duct cleaning keeps your heating and cooling running efficiently, lowers energy costs, and creates a healthier home environment. Whether you’re in a coastal town or inland community, Denali HVAC is your local partner for clean air and comfort. We’re proud to serve Washington families with honest service and dependable results.
Our Program
Our Programs
We provide reliable monthly air conditioning maintenance for homes and businesses, and offer routine daily inspections for large-scale industrial HVAC systems.
Industrial HVAC
Denali specializes in industrial HVAC with daily system checks and preventative maintenance to maximize uptime.
Home Maintenance
Denali takes care of your home like it’s our own—keeping your HVAC system running smoothly so you stay comfortable year-round.
New Installs
Choosing new HVAC equipment is overwhelming—Denali makes it easy with expert guidance, honest recommendations, and installs you can trust.
Our Gallery
DENALI AT WORK
New Addition to our fleet!
We bought this ram in 2024 as the 5th truck in our fleet
Our Office
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Maintain Your Equipment!
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Fully Certified Tech, Derek.
Derek is our General Manager and an extremely important part of our team!
Ductless Install
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Fully Equipped
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Testimonials
We're Trusted By Consumers and Companies
Say what you want—about the best equipment, the biggest fleet, or the longest warranties. None of it matters if you don’t have trust. At Denali, trust isn’t a buzzword—it’s the foundation of everything we do. Because when it’s your home or business on the line, you deserve more than promises. You deserve people who show up, follow through, and always put you first.
Does Denali Sell Air Filters?
YES! We sell all sizes of air filters at an affordable price! Just call us and tell us the model of you equipment (there's a sticker on the unit).
Does Denali Offer Air Conditioner and Heater Maintenance Program?
Denali has a maintenance program that averages $250 after rebates (and we do the rebate for you). The rebate is courtesy of Local 66 Union!
How Do I Know If Denali Can Work On My Brand of Equipment?
As long as your equipment was professionally installed, we can work on it for you. Denali Heating & Air Conditioning works on all brands and types of equipment. We're certified for commercial, residential and industrial equipment.
How Much Will A New System Cost?
Great question! Because heating and cooling systems are affected by a lot of details—like your home’s size, layout, and insulation—we’ll need a few key pieces of info to give you an accurate estimate.
Don’t worry, we’re not asking for your mother’s maiden name—just the basics about your home to make sure we give you the best options. Estimates for new system instals are completely free, even if you don't buy.
Do You Offer Duct Cleaning?
Yes and every duct in your house is included.
We’ve all seen those too-good-to-be-true duct cleaning ads on Facebook—“$49 whole house cleaning!” Yeah… not quite.
At Denali HVAC, we don’t do bait-and-switch. Our duct cleaning service is honest, thorough, and handled by real pros.
Cleaner air, better HVAC performance, and no surprise charges. Just solid service from a local team you can trust.
Let’s clear the air—for real this time.