Brian was quick to respond and completed the install just a few days later. Their pricing was very…read morecompetitive.

Love the system we received. but a little damage to the siding…read more He was quick and efficient for installation.

Brian from Mills came out today and our system was up and running in less than an hour! He…read moreadjusted our gas pressure and something with the flame. Then cleaned the system and rewired our thermostat. After another company came out and said our HVAC needed our vents cleaned and we did that: still nothing. Wish I knew how good Mills was before wasting time and MONEY with Mountain Heating and Cooling.

We got quotes from other Mini-split installers, but Mills Northwest was most accomodating and had…read morethe best prices. They got the installation done quickly and efficiently. The guys were friendly and easy to work with. Even the county inspector was impressed with the quality of their work and said so to me. In short, they were terrific and my wife still says that we made a great choice by selecting them over the competition.

We used this company before and was happy with the service, however now 2+years later they are not!…read more We had an issue with cold air leaking around the system they installed. We asked them to come out to look and fix if need be. The technician came out but not able to "fit" (their words not mine) and could not fix the problem. They told us we had to call another company to come fix the issue. To add insult to injury we were charged $175 for this "service". We called the office to question and the lady was so rude, didn't care about this issue, and was nasty. I will pay for this non service, however I will never use this company again, and when recommending when asked will turn away ANY and ALL to from this company.

I would like to say that the young man who came out and reattached my air duct was polite and…read moreprofessional. The problem has to do with the billing. Shortly after he left I got a call from Jeanine in billing. The amount was high (about double) from what I thought, so I asked her and she replied that it was for 3.5 hours of service. She reiterated that it included commute time for the serviceman and also loading his truck with necessary supplies. Minimal supplies were needed. According to Google we live 12 minutes from their office. Even round trip should take 25-30 minutes. So here is the timeline: The repairman arrived at my house promptly at 8:10. He worked until 9:40. That's 1.5 hours. Factor in 30 minutes for the commute and that equals 2 hours! According to Jeanine's timeline The young man would have showed up to work at 7:00 AM, loaded his truck with supplies which he didn't need until 7:55, drove to my house at 8:10, worked until 9:40, drove back to the office by 9:55, handed in his paperwork, only to have Jeanine call me at 10:30 to equal 3.5 hours. All on my dime! BAD BUSINESS MODEL. Carl W.

My elderly sister was taken advantage of by Advanced Energy…read more She left $450 cash an envelope for a $430 service call. They took the full $450 and did not leave the $20 change. They did not leave an invoice or receipt. Worse, her heat pump was under warranty, but they still charged her for the part. This is exactly the kind of thing that makes people distrust service companies. An elderly customer should not have to worry about being overcharged, having cash kept, or being billed for warranty parts. I would not recommend Advanced Energy

Heater stopped working just in time for cold weather to set in. Called Advanced Energy and they…read morehad 2 service guys out the next afternoon. They quickly diagnosed the problem, fixed it on the spot and checked the complete system. Could not be happier with this company and will definitely be looking at them when it's time to upgrade.

Absolutely incredible company, the owner Israel is so kind and extremely efficient!!…read more I requested an estimate on Monday & the job was scheduled for Wednesday. (Today!! They are just finishing up!) Talk about quick turnaround & exceptional communication. I had numerous areas around my home pressure washed and these gentlemen truly did a fantastic job!! They worked SO HARD & it is clear that they take pride in their work. I 10000% recommended this company and I will be referring everyone I know who needs pressure washing done. Their prices cannot be beat, I am so grateful!!

Isreal and his team gave a reasonable quote and did a great job cleaning my bathroom vents and…read moredryer vent. I'm a remote homeowner, and they worked with my tenants to schedule time. They cleaned up after themselves as well. Remote online payment was very smooth. Would hire again. Thank you!

UPDATING TO FIVE STARS because Brett and Quintan came today and were AWESOME. They not only fixed…read morethe issues I originally posted with a 3* review, but also revisited what we had discussed back in March - fixed it, and found something new going on that we will fix soon. VERY happy now. Prior review: We hired Capitol Duct because they were the only company we called that used a scope (camera) to examine the ducts before cleaning. We should have gotten the ducts cleaned before installing an in-duct booster fan, but we didn't think of it, so we needed the cleaners to be extra careful with their rotating brushes in that area. They came out 3-2-26. [I deleted the rest of my review, but the photos can' be deleted - they show dirt that showed up on our filter 2 months later. Capitol Duct came out again right away and took care of everything. NOTE to others - if something goes wrong, call them before posting a bad review.]

I hired Capitol Duct Cleaning to clean a dryer vent in April 2025. Fourteen months later, when the…read moredryer started malfunctioning, an appliance repair technician found the cause: a cleaning brush lodged in the duct. I don't know how or when the brush ended up there -- but I do know that a thorough duct cleaning should have found and removed it, and Capitol's did not. 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.