Logo of Circulating Air Inc

Circulating Air Inc

  • 500 9th Ave #12, Longmont, CO 80501
  • Industrial Roofing
  • 24/7 Emergency Repairs
  • Financing Available
  • Warranties Offered
  • Metal Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM

About the Business

At Circulating Air Inc, we pride ourselves on our versatility and technical expertise, serving both residential and commercial clients in Longmont, Colorado, and the surrounding areas. Our comprehensive range of services includes roof installation, roof repair, roof vent installation, and gutter cleaning, among others. We are equipped to manage complex projects from start to finish, ensuring that every detail is meticulously addressed. Our organization and consistency set us apart, allowing us to deliver durable and high-quality results that stand the test of time. We understand the importance of reliable service, and our well-coordinated team is dedicated to providing long-term value for our clients. Whether you need a simple repair or a complete installation, we are here to ensure that your project is executed thoroughly and efficiently.

What people say about “Circulating Air Inc”?

Circulating Air has received overwhelmingly positive feedback from customers, who consistently highlight their exceptional customer service, responsiveness, and honest communication. Customers appreciate the thorough explanations provided during service appointments and the commitment to resolving issues efficiently. Many reviews mention the company's competitive pricing and their integrity in not upselling unnecessary services. Overall, Circulating Air is recognized as a reliable and trustworthy HVAC service provider that values customer satisfaction.

What Users Like The Most

  • Bob and his crew are excellent—and they're honest.
  • Not only is the service great, it’s wonderful to have the information to understand what is happening.
  • They were great to work with and didn’t inflate the pricing like other companies.
  • Extremely responsive and professional.
  • Honesty. Integrity. Professional.

What Users Like The Least

Customers are fully satisfied

Recommended Reviews

Overall Company Rating
Excellent 5.0
Out of 33 reviews
5 stars
4 stars
3 stars
2 stars
1 stars
Show first:
Imani Gandy
Jun 30, 2025

If you're sweating to death in your house because your AC died and you've been told you have to get everything replaced to the tune of about twenty grand, but you don't know a single thing about HVAC installs and are concerned about some nefarious company screwing you over—

Relax. You've found the right place. Bob and his crew are excellent—and they're honest. Liz in reception is very nice. I got estimates from multiple places and even though I hadn't yet signed a contract with Circulating Air, Bob took the time to explain to me why the other bids (from Cooper and DNI) were actually terrible. It turned out they were offering me about 25% less for 25% more.

The install took less than a day. When I had a problem with the AC keeping the house cool, they promptly came out and fixed it (turns out it was a manufacturer instruction error about how much refrigerant to add.)

It is stressful when you're about to drop 18K on a big project—particularly if you don't know anything about HVAC and are ripe for being ripped off.

Go with Circulating Air. You won't be sorry. Also, if you're contemplating going with a place that offers financing, don't. Try to get a HELOC or other sort of bank loan. It ends up being cheaper.

Thank you, Circulating Air!

William Greig
Jun 3, 2025

Thank you for taking such good care of our house! Not only is the service great, it’s wonderful to have the information to understand what is happening and what needs to happen. Thanks!

Kelly DiNatale
May 2, 2025

We had Circulating Air install a furnace and a year later an AC. Incredibly competent, responsive, honest and more competitive than Boulder HVAC contractors. We had an issue a bit out of their warranty that was not their fault and they quickly resolved the issue. We highly recommend.

Carron Schulz
Mar 17, 2025

I was so impressed with the service offered by Circulating Air, Inc. The communication was top notch as well as customer service and service and general. They were timely with scheduling an appointment and provided detailed information regarding the service offered. I would recommend them to anyone looking for and HVAC technician in the area.

Jane C Bryant
Oct 25, 2024

As usual the tech was on time, personable and let me know the status of my furnace and AC unit.

kelly conner
Oct 23, 2024

I love this company!! They are responsive when we need help.. When our tenants need help with heat or A/C they make sure to take care of each and everyone!
I recommend this company!!

Cheryl Shatz
Oct 19, 2024

Have been a customer of Circulating Air since 2001. They are the BESTEST!!!!!!! Friendly, Genuine, Honest, Show Up, Dependable, Knowledgable and will never try to sell you something you do not need. -Once I had surgery (in another state)-came home late at night to no furnace -temp were in the teens. I stayed up all night throwing towels in the dryer to wrap myself in to keep warm-- Bob came 6am in the morning to fix the furnace for me. I will ALWAYS and only call Circulating Air for all my HVAC I refer them to all my Friends and Clients!!!

Jill Haney
Oct 17, 2024

We love Circulating Air. They have serviced our HVAC system for several years. The techs are friendly, down to earth, and knowledgeable. They charge fair prices. This is a family-owned company committed to customer service and it shows.

John Rhoads
Oct 11, 2024

Extremely responsive and professional. We had a humidification system installed and they were a great price and also helped diagnose/resolve another unknown problem in our HVAC system while they were working on it.

Will absolutely use again in the future and highly highly recommend.

Katie Riley
Sep 19, 2024

We had Circulating Air install AC for us at the beginning of September. They were great to work with and didn’t inflate the pricing like other companies that sent us bids. They were in and out within a day. They were super responsive, easy to work with, and reliable. I would definitely recommend them.

Thomas Culver
Sep 11, 2024

Bob and Tony are always on time and have done a great job for my family and I for years. Highly recommended!

Evana Henri
Jun 27, 2024

I am super excited to leave a positive review for Circulating Air! Prior to them we were referred to another HVAC company with high Google ratings. Their service guy took one look at our older system and tried to sell us a brand new A/C unit AND a furnace (which we don't need) for 32k+!!! No such cash lying around? No problem--THEY provide easy financing. By contrast, Bryce from Circulating Air helped us with our A/C and reassured us that our system was still good for at least a few more years. Honesty. Integrity. Professional. This company is a bright light!

Katie Walkden
Jun 21, 2024

So pleased with my experience. No upsell, Toni explained what he was doing and helped me understand what I needed to know. Extremely honest and my AC works again I Highly recommend them. This is a family owned business out of Longmont. Thank you.

douglas jackson
Mar 21, 2024

I called them because I had no heat. Service man came within 30 minutes fixed issues and I was back in business. Couldn't be more pleased with the service, was the second time I've used them and wouldn't hesitate to use them again. Thank you Circulating Air!!

Chad Patterson
Aug 10, 2023

I'm unable to say enough good things about Bob and Circulating Air. Honest, professional, and old fashion "customer first" type of service. There are very few companies like this one left. Thank you for always taking such good care of us!

Ryan Kramer
Mar 10, 2023

I had been searching for a good HVAC person for a long time and I’m so glad I found Bob at circulating air. He is honest, does high quality work, charges very fair prices, and has absolutely top notch customer service. For example, I recently had a gas smell after he installed a new furnace. He returned to investigate immediately and discovered it was due to a faulty water heater installation done by a different contract. Despite it not being his responsibility, he fixed the water heating and did not charge me a dime for the work or for the visit. This type of above and beyond service is the reason I recommend circulating air to everyone I know.

Christine Dominick
Jul 26, 2021

Had a very well-established HVAC company come out -- we've used them for a while. They kept selling us new stuff ... new furnace (understandable, it was old), new water heater (kind of suspicious, because it wasn't that old -- but ok), then saying we needed a new AC (a 7 year old unit). That's when I was like -- holy moly -- we've been getting played. Found Circulating Air on Nextdoor and they were like "nothing is wrong with this unit, call us in 2 years -- or sooner if something is an issue." TONY you are awesome. I will be telling everyone about you. Thank you for the honesty.

Erik W
May 17, 2021

Top notch professionalism and dedication to customer satisfaction. Will absolutely use them again in the future, and recommend them wholeheartedly to anyone looking for HVAC work.

margaret ames
May 14, 2021

Lavone is the kindest and most efficient person and we will definitely always go back to Circulating Air. What a wonderful company with amazing people!

Benjaneering
Apr 24, 2021

We've used these guys for years. They do excellent work and are the kindest and genuine people you will meet.

Tam S
Feb 24, 2021

Wonderfully professional makes me feel comfort that when I need to replace my furnace I can go to Bob and his team with no worries. Best value in town. Trustworthy. A jewel in the heating business. Not to mention Yvonne who is awesome and so helpful. I will recommend this company forever. Thanks circulating air for all you for the community.
Tam

--
Oct 30, 2020

Bob was super efficient and awesome. The lady I spoke with on the phone was extremely nice and down-to-earth as well. Fantastic experience.

Jonny Quest
Aug 26, 2020

Really great service. Extremely good communication with the office. Bob, and Tony especially, knew exactly what we needed to match our 20 year old dual system. They got it right, then they came back free of charge and made it even better. Would highly recommend. Thanks Circulating Air! Very happy customer.

brAnt
Jul 24, 2020

Highly recommend these guys for inspection/service, especially if you have an older unit/system. I saw how they handled a neighbors A/C unit and overheard Bob dropping some knowledge on how they could FIX, rather than go straight to replacing. They were SUPER happy. So, I had them come out to service my roof top unit and my furnace stack. Even though it's an older set up, they said it was solid, freon was good, and it should last. They also saved my sanity by making our neighbors unit (which is also on my roof) 98% quieter with some rubber feet. Talk about a relief! Anyways, Bob and his guys are super professional, knowledgeable, and friendly. Lavonne (sp?) in the office was also great to deal with.

Daveen Peterus
Jun 3, 2020

We have used CA three times in the past for various AC/heating related things, and I could not be more pleased with the service. Very professional, pleasant techs (Bob and his son), and they provided perfect service at very reasonable prices. I have recommended this company to multiple people and will continue to do so. They're simply great.

Erica Dahl
Apr 6, 2020

We have used Circulating Air for two of our homes and both times we were extremely happy with the service, friendliness and fair pricing. In a world where you feel everyone is trying to squeeze an extra dime out of you- it’s so nice to find a reliable and trustworthy company to help with any and all heating and cooling needs. Don’t bother doing any more research- this is the company you want. Bob was our technician both times- very nice and knowledgeable. Lucky to have found them!

Nate Golter
Feb 27, 2020

Wow! Above and beyond customer service! I was quoted $3500 to replace a furnace by 2 other companies and Bob was able to replace a part for almost nothing and it’s working like a charm. I’ll never use anyone else.

Rick W
Feb 18, 2020

In behalf of tamara, a 5 star rating. Yvonne wonderful and so helpful. Great team.
Bob was great, he was informative, helpful and educational during my visit. Feel like I bob is on myside being so trustworth, And honest. I'll do business with him again
Will recommend him to friends and family. Thank you for my visit today. Tamara

Alexander Sollie
Sep 23, 2019

Got my whole home HVAC system replaced by Bob with no hassle, professionally, and on time; all for thousands less than the pushy competition quoted me. I was very happy with the entire process.

Murat Sean McKeown
Jun 11, 2019

I was extremely impressed with the professionalism and integrity of Bob

Bob arrived when he said he would and after doing checks on the A/C system, he determined that the Thermostat was not working properly on the cooling side as I suspected. He was about to start swapping out the unit until I told him that the previous tenant/owner had a Google Nest installed and must have replaced it with the current Honeywell unit before he vacated.

Bob paused for a second and started thinking. He then said that that maybe the owner forgot a critical wire connection while installing the Honeywell thermostat due to differences in the wiring between the two units. Bob grabbed a small jumper wire and added it, then the cooling system kicked on and has been working great since then.

He saved the property owner the cost of a new thermostat in the process. That kind of honesty goes a long way.

Justen Staufer
Apr 16, 2018

Bob is the most honest contractor I know, and I know a lot of contractors. His prices are fair and there is a reason he has all these 5 star reviews.

Pat Manwell
Sep 19, 2017

I have been using Bob and his team for 18 years. Circulating Air is honest and reliable whether you are installing a new heat and air unit or having a service. They are prompt and respectful if your home. 5 stars!

Chin Ong
Dec 8, 2016

When the company couldn't come to fix our heater because they were booked solid for the entire week (speaks well of the company), they referred a trusted competitor because they were concerned when we told them there was a small child in the home! The weather then was still warm enough, so we waited instead of using the competitor. A couple days later, the company had an open spot and Tony fixed the heater. A few days after, the heater quit working again. Bob came out, fixed the problem at NO additional charge. WOW!!
Honest, fair, wonderful people.

Call us and get a quote right now Show phone number
137 locals recently requested a quote
  • 500 9th Ave #12, Longmont, CO 80501
  • Industrial Roofing
  • 24/7 Emergency Repairs
  • Financing Available
  • Warranties Offered
  • Metal Roof
Hours
Mon7:30 AM - 9:00 PM
Tue7:30 AM - 9:00 PM
Wed7:30 AM - 9:00 PM
Thu7:30 AM - 9:00 PM
Fri7:30 AM - 9:00 PM
Sat7:30 AM - 9:00 PM
Sun7:30 AM - 9:00 PM

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