Business Details
32 Years
experience
Emergency
services
Your Trusted HVAC Partner in Castle Rock, WA
Denali HVAC has been delivering trusted heating, ventilation, and air conditioning solutions since 1994. As a Mitsubishi Diamond Contractor and certified American Standard dealer, we combine industry-leading expertise with a commitment to personalized service. Our union-certified technicians bring decades of combined experience to residential, commercial, and industrial projects across Washington State.We prioritize customer-first pricing, top-tier equipment, and warrantied installations while maintaining our status as HVAC's highest retention employer. Our 20-year legacy of excellence includes serving local industries and homes with honest service, dependable results, and a 4.8 Google rating earned through consistent performance. Backed by Local 66 Sheet Metal Workers Union, we offer specialized programs for system maintenance, emergency repairs, and energy-efficient upgrades.
Services
HVAC Installations
Duct Cleaning
Maintenance Programs
Emergency Repairs
Industrial HVAC
Air Quality Solutions
Details
- Year established: 1994
Highlights and features
- 20 years of HVAC expertise since 1994
- Union-certified technicians with specialized training
- Emergency services available 24/7
- Financing options for new system installations
- Backed by Local 66 Sheet Metal Workers Union
Associations and certifications
- Mitsubishi Diamond Contractor
- American Standard Dealer
- Local 66 Sheet Metal Workers Union
What people say
Prompt emergency response
Professional technicians
Reliable installations
Competitive pricing
Excellent communication
Services
HVAC Installations
We install energy-efficient heating and cooling systems including 17 SEER variable speed units, Quest 16 multi-speed systems, and Mitsubishi ductless solutions. Our certified technicians ensure proper installation with 12-year warranties on Diamond Contractor systems. We help customers choose optimal equipment based on home size, layout, and insulation requirements.
Duct Cleaning
Our professional duct cleaning removes dust, allergens, and debris from HVAC systems to improve indoor air quality and system efficiency. This service includes all ducts in residential and commercial properties, performed by experienced technicians using industrial equipment for thorough cleaning and improved energy efficiency.
Maintenance Programs
We offer monthly residential maintenance and daily industrial system inspections to maximize equipment lifespan and efficiency. Our programs include filter replacements, system checks, and performance optimizations that reduce energy costs and prevent unexpected breakdowns for homes and businesses.
Emergency Repairs
Available for urgent HVAC issues with rapid response times for heating and cooling emergencies. Our certified technicians handle weekend and holiday service calls for residential and commercial clients, prioritizing prompt solutions to restore comfort and prevent equipment damage.
Industrial HVAC
Specialized industrial HVAC services include daily system checks, preventative maintenance, and emergency repairs for large-scale operations. Our union-certified technicians maintain uptime for commercial facilities through customized maintenance programs and immediate response for critical system failures.
People
Molly Franklin
Owner
Molly Franklin leads Denali HVAC with a commitment to exceptional service and employee development. With over 20 years in the industry, she maintains the company's founding values of honesty and customer focus while expanding service capabilities.
Derek
General Manager
Certified technician Derek oversees daily operations and service quality at Denali HVAC. With extensive technical expertise and management experience, he ensures all installations and repairs meet the company's high standards for performance and customer satisfaction.
Questions
Do you service all HVAC brands?
Yes, we service all professionally installed HVAC brands including residential, commercial, and industrial equipment.
Are financing options available?
Yes, we offer financing options for new HVAC system installations to qualified customers.
What areas do you serve?
We serve residential and commercial clients throughout Washington State.
Do you offer duct cleaning?
Yes, our thorough duct cleaning service includes all ducts in your home or business.
What certifications do your technicians hold?
Our team includes Local 66 Sheet Metal Workers Union-certified technicians and Mitsubishi Diamond Contractor specialists.
Reviews (5)
Brian Johnson
Sep 29, 2021
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Called Denali on a record hot week to replace our 20+ year old furnace and heat pump which was failing. Tristan came and gave us an estimate and ordered our replacement quickly. Tristan was a guy. The technicians were very professional and kept their work clean and left no mess behind. Our house is now regulating heat better than we had hoped for.
Al Deichsel
Aug 07, 2021
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First class operation. They were a pleasure to work with. They installed a heat pump and air handler in my house. Union shop
Steve E.
Oct 25, 2020
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As usual, excellent service. Got our guy, Kip, who did our service call 2 years ago. First winter in our new home and we were a bit anxious that our furnace was in good shape and ready to keep us and our beloved husky heartbeats toasty and happy. He did a very thorough and professional maintenance check. Pleasant, informed and navigated our crazy pak quite well. Will not call anyone else for any of our heating and ac needs. Well done!!
Dolan Santero
Sep 06, 2020
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My heat pump froze over 2 months after purchasing my home. I called Denali because of the reviews and the simple fact that I like to support my local businesses. Unfortunately, their techs lack of knowledge and experience costed me over $500 and left me with a $400 power bill (emergency heat for 2 months). They sent someone out to diagnose my system and discovered that my defrost board wasnt working and it was low on refrigerant, the tech stated that its not uncommon for older units to have minor leaks and he refilled it and told us that if we replaced the defrost board wed be back up
David Beer
Aug 22, 2020
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Positive:Professionalism,Punctuality,Quality,Responsiveness,Value
Denali was so easy to work with. Their crew was clean, professional & timely. We highly recommend them!
Denali was so easy to work with. Their crew was clean, professional & timely. We highly recommend them!
