Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Milliken, CO

There are 13 highly-rated local heating and air conditioning pros.

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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon520
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Milliken

Avatar for Behold Heating & Cooling Services

Behold Heating & Cooling Services

9800 Mt Pyramid Ct #4040
4.94(
31
)
Approved Pro

Behold Heating & Cooling Services

9800 Mt Pyramid Ct #4040
4.94(
31
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
262 local quotes requested

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"The customer service is incredible! Ask for Jay! He sent us a team of technicians (Dylan,Chris,Tristan & Hunter) who were very professional, knowledgeable, friendly and efficient. They got the job done in one day! They also made sure everything was working properly and that we understood how it all worked. Easy to get a hold of and great service."

Loretta O on July 2025

Behold the Difference! Every day we are invited into our customer’s homes. Into their safe place and sanctuary. Quite often this is in the midst of a concern or issue that needs to be fixed! With an extensive background that spans well beyond just the trades, we love to be different. In addition to decades of industry experience, we bring some secret sauce - we love to take all the time needed to help, to make sure you are comfortable, and to provide amazing solutions. Come BEHOLD the difference! "Unfortunately we do not service or intall swamp or evaporative coolers".

"The customer service is incredible! Ask for Jay! He sent us a team of technicians (Dylan,Chris,Tristan & Hunter) who were very professional, knowledgeable, friendly and efficient. They got the job done in one day! They also made sure everything was working properly and that we understood how it all worked. Easy to get a hold of and great service."

Loretta O on July 2025


Avatar for Limelight Services LLC

Limelight Services LLC

5255 Ronald Reagan Blvd
4.71(
17
)
Approved Pro

Limelight Services LLC

5255 Ronald Reagan Blvd
4.71(
17
)
Approved Pro
Customers say: Quality work
194 local quotes requested
17 years of experience

Limelight Services is the only family owned, Google 5-star-average (with 300+ reviews) electrical, plumbing, and HVAC home services company located in Northern Colorado. We pride ourselves in finding creative solutions to your needs, from the simplest troubleshooting problem to the most complex project. We are your on-time, same day electrician, plumber, and HVAC specialist. We strive to offer 5 star service from the first moment we communicate, and for years to come. Our goal is to be your home services company of choice for as long as you own a home in Northern Colorado. We understand that we must be exceptional for that to happen, and we do all we can to live up to our promises. The result? The level of quality and care experienced by our customers. We would be honored to have an opportunity to earn your business. Thank you for taking the time to find out more about us, we hope to hear from you soon.

"Tony did a great job replacing my broken 50 gallon self venting hot water heater. It is in a difficult space to maneuver getting the old one out and the new one in. He did a great job updating what needed to be done (in my old 1910 home so there is always something!) and I feel very confident in their work. Limelight is my go to place and am so glad I found them!"

Ruth W on May 2025

Limelight Services is the only family owned, Google 5-star-average (with 300+ reviews) electrical, plumbing, and HVAC home services company located in Northern Colorado. We pride ourselves in finding creative solutions to your needs, from the simplest troubleshooting problem to the most complex project. We are your on-time, same day electrician, plumber, and HVAC specialist. We strive to offer 5 star service from the first moment we communicate, and for years to come. Our goal is to be your home services company of choice for as long as you own a home in Northern Colorado. We understand that we must be exceptional for that to happen, and we do all we can to live up to our promises. The result? The level of quality and care experienced by our customers. We would be honored to have an opportunity to earn your business. Thank you for taking the time to find out more about us, we hope to hear from you soon.

"Tony did a great job replacing my broken 50 gallon self venting hot water heater. It is in a difficult space to maneuver getting the old one out and the new one in. He did a great job updating what needed to be done (in my old 1910 home so there is always something!) and I feel very confident in their work. Limelight is my go to place and am so glad I found them!"

Ruth W on May 2025


Avatar for Lion Home Service

Lion Home Service

4868 Innovation Dr
4.45(
78
)
Approved Pro

Lion Home Service

4868 Innovation Dr
4.45(
78
)
Approved Pro
Super Service Award
Customers say: Super punctual
189 local quotes requested
16 years of experience

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"DO NOT USE THIS COMPANY. Please look at the YELP or BBB complaints, they are much more akin to what I experienced. They are certainly manipulating the Google reviews. I hired Lion to do a simple cleaning/certifying of our HVAC units as part of a sale. I was initially quoted $119, and I verified no less than 3 times with the customer service rep that the price would include cleaning and testing. When our tech showed up, he said we were misquoted and the charge for cleaning and testing would be about $450, as it was part of their "maintenance" package. They very reluctantly cut us a "deal" for just over $300. Not only was zero cleaning done, the tech did not perform a single action that could be classified as "maintenance." What we got was a diagnostic and estimate for repairs and replacement. I called to complain twice before someone finally got back to me. I was told that the tech didn't perform the cleaning because it may have damaged the unit, which was clearly a lie because the tech never told me that and actually gave me a quote to perform the AC coil cleaning, $470 (what a deal!). The rep then told me that a simple cleaning was done, but not the deep clean that I was expecting. I asked that my invoice be revised to reflect that, but was quickly blocked. Yes, they actually blocked my number after repeatedly misrepresenting both the price and work. I was shocked. I filed a complaint with the BBB, of which I discovered there are many. Hopefully they do the right thing and just give me a refund, but I won't hold my breath. Again, they are clearly manipulating their reviews on Google. Customers do your research!"

Dylan N on May 2025

Lion Home Service is setting a new standard of excellence in the industry. We specialize in prompt service, quality fixes, and a reliable response that you can trust. We take pride in our reputation and have built our business one satisfied customer at a time. Whether you need an emergency repair, regular maintenance, or have a project you are planning, we are your total home solution. Service Delivered With Pride! Heating, Cooling, Electrical, Plumbing, Drain Cleaning, Septic, Roofing, Gutters, Indoor Air Quality and MORE! Look for the Home Service company offering the best service and guarantees to ensure your repair or service is done correctly the first time! 100% SATISFACTION GUARANTEE- We agree to accept responsibility for your complete satisfaction with the materials we use and the workmanship we provide. During the first year, if you are dissatisfied with our service or our people for any reason, we will do whatever it takes to make it right and correct the problem to your satisfaction. Additional Guarantees- We Value Your Safety- No Blame Game-We Value Your Time-Apples to Apples -Workmanship

"DO NOT USE THIS COMPANY. Please look at the YELP or BBB complaints, they are much more akin to what I experienced. They are certainly manipulating the Google reviews. I hired Lion to do a simple cleaning/certifying of our HVAC units as part of a sale. I was initially quoted $119, and I verified no less than 3 times with the customer service rep that the price would include cleaning and testing. When our tech showed up, he said we were misquoted and the charge for cleaning and testing would be about $450, as it was part of their "maintenance" package. They very reluctantly cut us a "deal" for just over $300. Not only was zero cleaning done, the tech did not perform a single action that could be classified as "maintenance." What we got was a diagnostic and estimate for repairs and replacement. I called to complain twice before someone finally got back to me. I was told that the tech didn't perform the cleaning because it may have damaged the unit, which was clearly a lie because the tech never told me that and actually gave me a quote to perform the AC coil cleaning, $470 (what a deal!). The rep then told me that a simple cleaning was done, but not the deep clean that I was expecting. I asked that my invoice be revised to reflect that, but was quickly blocked. Yes, they actually blocked my number after repeatedly misrepresenting both the price and work. I was shocked. I filed a complaint with the BBB, of which I discovered there are many. Hopefully they do the right thing and just give me a refund, but I won't hold my breath. Again, they are clearly manipulating their reviews on Google. Customers do your research!"

Dylan N on May 2025


Avatar for Heart Heating, Cooling, Plumbing & Electric

Heart Heating, Cooling, Plumbing & Electric

646 Bryant St
4.77(
77
)
Approved Pro

Heart Heating, Cooling, Plumbing & Electric

646 Bryant St
4.77(
77
)
Approved Pro
Super Service Award
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
311 local quotes requested

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Seneca Trujillo came out to give us a price quote on electrical work in our garage for an EV. He was professional, honest, straightforward and explained everything clearly. He took the time to answer all of my questions and concerns and gave a fair and transparent estimate without upselling unnecessary work. It's refreshing to meet someone who is trustworthy and puts integrity first. He definitely deserves a raise for the way he represents Heart Heating, Cooling, Plumbing and Electric."

Joe V on July 2025

Heart Heating, Cooling, Plumbing & Electric provides the highest quality service for all your Furnaces, Air Conditioner, Boilers, Water Heaters, plumbing, and electrical systems. We utilize the latest technology to save our customers time and money, including tablet-based systems with "Uber Style" tracking of your technician and "Up Front" pricing so there are never any surprises. Our staff is licensed, insured, background checked, drug tested, and in a company uniform and vehicle for your safety and peace of mind. We are a veteran-owned company.

"Seneca Trujillo came out to give us a price quote on electrical work in our garage for an EV. He was professional, honest, straightforward and explained everything clearly. He took the time to answer all of my questions and concerns and gave a fair and transparent estimate without upselling unnecessary work. It's refreshing to meet someone who is trustworthy and puts integrity first. He definitely deserves a raise for the way he represents Heart Heating, Cooling, Plumbing and Electric."

Joe V on July 2025


LC Contracting, LLC

1201 Peak Ct
5.00(
11
)
Approved Pro

LC Contracting, LLC

1201 Peak Ct
5.00(
11
)
Approved Pro
Customers say: Quick response
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
32 local quotes requested

We are your hometown HVAC company! Your HVAC equipment keeps your property comfortable year-round. It's important to work with a reliable HVAC contractor to make sure that your equipment is always working effectively. Turn to LC Contracting, LLC in Severance, CO for repairs, installations and replacements. Whether you need water heater services or a new furnace, we can handle it. Contact us today to schedule our services.

"He did a great job!"

Deane B on June 2022

We are your hometown HVAC company! Your HVAC equipment keeps your property comfortable year-round. It's important to work with a reliable HVAC contractor to make sure that your equipment is always working effectively. Turn to LC Contracting, LLC in Severance, CO for repairs, installations and replacements. Whether you need water heater services or a new furnace, we can handle it. Contact us today to schedule our services.

"He did a great job!"

Deane B on June 2022


Savage Heating and Air LLC

1882 East 104Th Ave Apt.1316
5.00(
1
)
Approved Pro

Savage Heating and Air LLC

1882 East 104Th Ave Apt.1316
5.00(
1
)
Approved Pro
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 local quotes requested

In Business Since 2023 SAVAGE HEATING AND AIR, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 8 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Savage Heating and Air has extensive knowledge on all my HVAC needs. Very nice and professional"

Andrew N on December 2024

In Business Since 2023 SAVAGE HEATING AND AIR, LLC is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 8 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

"Savage Heating and Air has extensive knowledge on all my HVAC needs. Very nice and professional"

Andrew N on December 2024


Cool Ducts, LLC

2580 E Harmony Rd Suite 301-6
5.00(
4
)
Approved Pro

Cool Ducts, LLC

2580 E Harmony Rd Suite 301-6
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
6 years of experience

Cool Ducts LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Cool Ducts LLC is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating

"I highly recommend them. They are knowledgeable and professional. Nick is super cool. Nick has a great personality and explained the options in detail. He was very detailed oriented and cleaned up afterwards. My system is working at its best. He is dedicated to providing 100% customer satisfaction."

A L on February 2024

Cool Ducts LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. Cool Ducts LLC is a leader in providing our customers with the highest quality products and craftsmanship in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating

"I highly recommend them. They are knowledgeable and professional. Nick is super cool. Nick has a great personality and explained the options in detail. He was very detailed oriented and cleaned up afterwards. My system is working at its best. He is dedicated to providing 100% customer satisfaction."

A L on February 2024


Avatar for HALO Heating and Air

HALO Heating and Air

PO Box 785
5.00(
8
)
Approved Pro

HALO Heating and Air

PO Box 785
5.00(
8
)
Approved Pro
Customers say: Quick response
1 years of experience
Free onsite estimate

Here at HALO Heating and Air, we are locally owned and operated. No job is too big or too small. Call us today for a free estimate! We are looking forward to going above and beyond on your project soon.

"Steve was great! He came out on July 4th!! That right there says a lot to me, he had to pick up the part that we needed on the 5th due to the holiday and got our air back up and running right away!"

Brianne S on July 2024

Here at HALO Heating and Air, we are locally owned and operated. No job is too big or too small. Call us today for a free estimate! We are looking forward to going above and beyond on your project soon.

"Steve was great! He came out on July 4th!! That right there says a lot to me, he had to pick up the part that we needed on the 5th due to the holiday and got our air back up and running right away!"

Brianne S on July 2024


Avatar for Complete Comfort Designs LLC

Complete Comfort Designs LLC

937 Keneally Ct.
5.00(
5
)
Approved Pro

Complete Comfort Designs LLC

937 Keneally Ct.
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
5 years of experience

At Complete Comfort Designs LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"I had the best experience booking and getting the service completed with Complete Comfort Designs. It was as smooth and professional as could be!! We had our A/C and heating system tune-up, and we will continue using this company for years to come as it was everything a homeowner could ask for."

Maria S on September 2023

At Complete Comfort Designs LLC, we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.

"I had the best experience booking and getting the service completed with Complete Comfort Designs. It was as smooth and professional as could be!! We had our A/C and heating system tune-up, and we will continue using this company for years to come as it was everything a homeowner could ask for."

Maria S on September 2023


All Season Heating & Air Conditioning, LLC

906 Messara Drive
5.00(
4
)
Approved Pro

All Season Heating & Air Conditioning, LLC

906 Messara Drive
5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

All Season Heating & Air Conditioning has been locally owned and operated for over 17 years serving Fort Collins and the surrounding areas. Our size allows us to maintain the highest level of quality and customer service. Our focus is and has always been the attention to the needs of each and every customer. We specialize in the installation of custom heating, air conditioning and zone systems for all residential and light commercial needs. This includes: * New and replacement furnace and air conditioning system installations *Remodels *Basement finishes *Home additions *Steam Humidifiers *Zone Systems *Service and maintenance on all makes and models

"Fantastic - came out id the dead of winter to fix my heater! Also installed a central A/C unit. Always cleans up, even vacuums after he is done. Good price & excellent service!"

Mike H on March 2017

All Season Heating & Air Conditioning has been locally owned and operated for over 17 years serving Fort Collins and the surrounding areas. Our size allows us to maintain the highest level of quality and customer service. Our focus is and has always been the attention to the needs of each and every customer. We specialize in the installation of custom heating, air conditioning and zone systems for all residential and light commercial needs. This includes: * New and replacement furnace and air conditioning system installations *Remodels *Basement finishes *Home additions *Steam Humidifiers *Zone Systems *Service and maintenance on all makes and models

"Fantastic - came out id the dead of winter to fix my heater! Also installed a central A/C unit. Always cleans up, even vacuums after he is done. Good price & excellent service!"

Mike H on March 2017

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Heating and Air Conditioning questions, answered by experts

No, heat pump maintenance needs are very similar to air conditioners, including keeping outdoor units clean, changing filters regularly, and occasionally scheduling a refrigerant check to see if any has leaked out. Heat pumps typically switch automatically between heating and cooling, so you don’t need to worry about manually changing them every season. However, since they are always on call, they can develop wear and tear faster than an air conditioner.

It’s normal to hear a low humming sound as air moves through your vents. Most of the time, you probably won’t even notice it. However, if that sound becomes disruptive or if you hear more concerning noises (such as rattling, clicking, banging, hissing, or grinding), there might be a problem with your HVAC system.

The higher the BTU rating an air conditioner has, the more effective it can be at cooling your space. It will cool off your room faster in the short term. However, over the long term, if the unit has too many BTUs for the space, it can wear down the unit faster and shorten its life span.

To make the most out of your AC, consider implementing the following best practices: 

  • Choose the right size AC for your home to ensure your unit runs as efficiently as possible.

  • Choose a window with shade, as direct sunlight can cause your AC unit to overheat. 

  • Clean or replace the filter at least every two months. 

  • Inspect the AC’s fan and straighten it if necessary. 

  • Discontinue use immediately if you suspect a malfunction, as running the AC while broken can lead to significant issues. 

  • Turn off (or adjust the temperature) when you leave the house.

A one-stage air conditioner only has one setting, while a two-stage air conditioner has a high and low setting. A two-stage air conditioner costs between $500 and $2,500 more than a traditional air conditioner, but it has a longer lifespan and helps to increase energy efficiency. To make this decision, you should consider your energy needs and available budget.

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The Milliken, CO homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.