
Crawl Space Insulation
Maximize Your Home’s Efficiency







When I called to raise this, they denied any responsibility and offered excuses for why their air-hose method wouldn't have caught it — while refusing to remove it now except as a new, separately paid job. Whatever the brush's origin, their original service demonstrably failed to clear the duct.
I agreed to pay again anyway, just to get it resolved. I was told a manager would call me first to discuss it. No one called. I waited for the scheduled technician instead; no one showed. When I followed up, I learned the office had canceled the appointment without telling me.
I rescheduled a third time, and to avoid any confusion, I emailed a photo of the brush along with the access details (about 10 feet in, no crawlspace) and asked them to confirm they could do the job at the agreed price. The email went unanswered. When I called, I was assured the office had seen it, reviewed the photo, and confirmed the job and price.
Two weeks later, the technicians arrived — 90 minutes early, before I was ready — with no idea they were there to remove a stuck brush. After using about 15 minutes of my time, they concluded they couldn't remove it after all. I told them to leave and hired someone else.
Across three separate appointments and every point of contact — the initial cleaning a year ago, the manager callback, the scheduled visit, the confirmed job — Capitol Duct Cleaning did not follow through on a single commitment it made. I won't use them again.



In general, every person I've talked to or had out has been kind, courteous, knowledgable and really stepped up. For example, my air return wasn't installed quite right (tract homes), and the tech went and reworked the sheet metal and fixed a problem that was not even theirs. Just free of charge, just pride in work stuff.
Then we all learned that the builder didn't tighten the wires into the control board, so the cleaning vibrated it out and my heat pump went offline. Same time, a burning dust smell in a bathroom kind of lingered (builder left vents open/running during construction.) This time, the head dude himself comes out, they hook it all up, re-clean the entire system for good measure, and my price? Zero. They just did it.
I'll say too, I'm not an HVAC guy but I've worked around construction enough to know when people care, and I'm telling you, these guys are the people you want working on your house.






First, the good: Both Dominick and Quentin, the techs, were great. Very polite and thorough. And Adam, the owner, was very nice and quickly addressed my concerns when the work I expected wasn't done during the first visit.
Now, the not-great: I initially called for professional dryer vent cleaning when I saw lint build-up beyond my lint filter and couldn't reach it with my vacuum. But I quickly learned from the first tech that cleaning from the dryer's lint filter to the wall isn't included in their service. For an industry whose entire existence is based on the threat of dryer lint building up and causing a fire, it's weird to me that this business only addresses PART of the threat. When I spoke with the owner about this, to his credit, he eventually agreed to send a second tech out to provide that service at no extra charge.
The other bad is not that it took 4 business days to get this resolved, as I think that's a pretty reasonable timeframe. No, it's the fact that I've received 3 texts and 1 email since the 1st visit begging for a review. I don't need to be hounded daily (esp before the work is complete) to provide a review. And I don't need to be told that the techs' bonuses depend on getting a five-star review.
In the end, the work was performed well and the price seemed reasonable. But the bumps along the way were annoying.










I highly recommend Capitol Duct Cleaning, especially if you’re lucky enough to get Larry and Q. Outstanding service from start to finish!






I highly recommend this company!

We confidently refer our clients to Capitol Duct knowing they’ll receive exceptional service every time. Whether residential or commercial, we highly recommend reaching out to their team.




I also want to thank the front desk team, especially Amy and her co-worker. Because of my kids’ school event, they went out of their way to accommodate my schedule. I can’t thank them enough for their flexibility and kindness.
Overall, I’m extremely satisfied with the service. Highly recommended!







The team came out to clean our ductwork and dryer vent, and they did a thorough, professional job from start to finish. They were polite, genuinely friendly, and took the time to explain every step of the process, answering all our questions with patience. They also sanitized the system and gave helpful, non-pushy recommendations for maintaining clean indoor air. We immediately noticed a difference in air quality. Highly recommend!




What Is Crawl Space Insulation?
When your crawl space isn’t insulated, or the insulation is old, damaged, or sagging, it can pull in cold air. Plus, that inefficiency also raises your energy bills and leaves your floors chilly in the winter.
Crawl space insulation helps lock in temperature and reduce heat loss. With an extra barrier to keep the heat in, your HVAC system can also work more efficiently. We install proper insulation in all the right places to help support comfort and energy savings from the foundation up.
Poor Insulation Can Affect More than Just Comfort
Cold, damp air from below can impact indoor air quality and increase allergens
Insulation negates this and helps create a cleaner, more comfortable home for your family.
Reviews







When I called to raise this, they denied any responsibility and offered excuses for why their air-hose method wouldn't have caught it — while refusing to remove it now except as a new, separately paid job. Whatever the brush's origin, their original service demonstrably failed to clear the duct.
I agreed to pay again anyway, just to get it resolved. I was told a manager would call me first to discuss it. No one called. I waited for the scheduled technician instead; no one showed. When I followed up, I learned the office had canceled the appointment without telling me.
I rescheduled a third time, and to avoid any confusion, I emailed a photo of the brush along with the access details (about 10 feet in, no crawlspace) and asked them to confirm they could do the job at the agreed price. The email went unanswered. When I called, I was assured the office had seen it, reviewed the photo, and confirmed the job and price.
Two weeks later, the technicians arrived — 90 minutes early, before I was ready — with no idea they were there to remove a stuck brush. After using about 15 minutes of my time, they concluded they couldn't remove it after all. I told them to leave and hired someone else.
Across three separate appointments and every point of contact — the initial cleaning a year ago, the manager callback, the scheduled visit, the confirmed job — Capitol Duct Cleaning did not follow through on a single commitment it made. I won't use them again.



In general, every person I've talked to or had out has been kind, courteous, knowledgable and really stepped up. For example, my air return wasn't installed quite right (tract homes), and the tech went and reworked the sheet metal and fixed a problem that was not even theirs. Just free of charge, just pride in work stuff.
Then we all learned that the builder didn't tighten the wires into the control board, so the cleaning vibrated it out and my heat pump went offline. Same time, a burning dust smell in a bathroom kind of lingered (builder left vents open/running during construction.) This time, the head dude himself comes out, they hook it all up, re-clean the entire system for good measure, and my price? Zero. They just did it.
I'll say too, I'm not an HVAC guy but I've worked around construction enough to know when people care, and I'm telling you, these guys are the people you want working on your house.






First, the good: Both Dominick and Quentin, the techs, were great. Very polite and thorough. And Adam, the owner, was very nice and quickly addressed my concerns when the work I expected wasn't done during the first visit.
Now, the not-great: I initially called for professional dryer vent cleaning when I saw lint build-up beyond my lint filter and couldn't reach it with my vacuum. But I quickly learned from the first tech that cleaning from the dryer's lint filter to the wall isn't included in their service. For an industry whose entire existence is based on the threat of dryer lint building up and causing a fire, it's weird to me that this business only addresses PART of the threat. When I spoke with the owner about this, to his credit, he eventually agreed to send a second tech out to provide that service at no extra charge.
The other bad is not that it took 4 business days to get this resolved, as I think that's a pretty reasonable timeframe. No, it's the fact that I've received 3 texts and 1 email since the 1st visit begging for a review. I don't need to be hounded daily (esp before the work is complete) to provide a review. And I don't need to be told that the techs' bonuses depend on getting a five-star review.
In the end, the work was performed well and the price seemed reasonable. But the bumps along the way were annoying.










I highly recommend Capitol Duct Cleaning, especially if you’re lucky enough to get Larry and Q. Outstanding service from start to finish!






I highly recommend this company!

We confidently refer our clients to Capitol Duct knowing they’ll receive exceptional service every time. Whether residential or commercial, we highly recommend reaching out to their team.




I also want to thank the front desk team, especially Amy and her co-worker. Because of my kids’ school event, they went out of their way to accommodate my schedule. I can’t thank them enough for their flexibility and kindness.
Overall, I’m extremely satisfied with the service. Highly recommended!







The team came out to clean our ductwork and dryer vent, and they did a thorough, professional job from start to finish. They were polite, genuinely friendly, and took the time to explain every step of the process, answering all our questions with patience. They also sanitized the system and gave helpful, non-pushy recommendations for maintaining clean indoor air. We immediately noticed a difference in air quality. Highly recommend!



Why Choose Capitol to Insulate Your Crawl Space
We don’t do shortcuts. We install insulation the right way: secured, sealed, and fitted for your specific space. When you choose to work with us, you’re choosing precise service, clear communication, and zero guesswork.
Our team treats your home with respect. We show up on time, stay organized, and document our work with before-and-after photos. From start to finish, our focus is on making the process easy for you and doing it right the first time.
How Our Crawl Space Insulation Process Works
We look at the crawl space and remove old insulation.
Our crew clears out damaged or fallen insulation and checks for any issues that would affect a clean install.
1.We install new insulation with long-term performance in mind.
Using high-quality materials, we insulate the crawl space to help reduce heat loss and protect your home from the ground up.
2.
Contact Us
Phone: 360-352-4693Open Hours
Weekdays
24 Hours
Sat/Sun
Closed
Contact Capitol Duct
"*" indicates required fields

FAQ
- Why is crawl space insulation important in the Pacific Northwest climate?
- How often should crawl space insulation be inspected or replaced?
- Can I install or replace crawl space insulation myself, or should I hire a professional?
- Does crawl space insulation help reduce energy bills?
- How long does crawl space insulation last?
Why is crawl space insulation important in the Pacific Northwest climate?
Experts generally recommend a thorough air duct cleaning every 3 to 5 years under normal conditions. Homes in Western Washington with pets, smokers, or residents with allergies or asthma may require more frequent cleanings (every 2–3 years).
How often should crawl space insulation be inspected or replaced?
Crawl space insulation doesn’t usually require frequent replacement – good insulation can last decades if it stays dry and intact – but it should be inspected at least once a year to ensure it hasn’t gotten wet, fallen out of place, or been damaged by pests.
Can I install or replace crawl space insulation myself, or should I hire a professional?
For many people, hiring a professional is worth it – insulation pros will know exactly what type of insulation and vapor barrier your crawl space needs for the Pacific Northwest climate, and they’ll install it correctly and safely.
Does crawl space insulation help reduce energy bills?
Absolutely. Insulating your crawl space creates a thermal barrier under your home that keeps heat from escaping in winter and helps keep your home cooler in summer. Many homeowners notice that floors are less cold and the heating system runs less after insulating the crawl space.
How long does crawl space insulation last?
The lifespan of crawl space insulation depends heavily on the material used, installation quality, and environmental conditions.