AC Replacement / Installation
AC Replacement & Installation Services in Highlands Ranch
Upgrade your comfort with our professional AC replacement and installation services. Whether you need to replace an outdated unit or install a new system, our experienced team ensures a seamless process, providing you with efficient and reliable cooling for years to come.

Expert Installation
Our certified technicians install your new AC system with precision, ensuring optimal performance and energy efficiency from day one.

Tailored Solutions
We assess your home’s specific cooling needs and recommend the best AC system to fit your space and budget, providing personalized comfort.
Trusted AC Experts in Highlands Ranch
AC Replacement & Installation Services in Highlands Ranch
Choosing the right AC system for your home is essential for maintaining comfort and efficiency. Our team guides you through the selection process, offering expert advice and high-quality installation to ensure your new system meets your needs. With our comprehensive services, you can enjoy a cool, comfortable home all summer long.
What Sets Us Apart
Why Choose Fireside Heating & Cooling?

Same-Day & After-Hours Service
Enjoy prompt HVAC solutions with our same-day and after-hours availability.

Locally & Veteran-Owned
Proudly serving Highlands Ranch as a locally and veteran-owned business.

Convenient Payment Options
We accept all major credit cards for a hassle-free payment experience.

100% Satisfaction Guarantee
Your satisfaction is our top priority—guaranteed every time.

Honest & Reliable Service
Count on us for trustworthy and dependable HVAC services.

Flexible Financing Options
Get HVAC services with no money down and affordable monthly payments.

Over 11 Years of Expertise
Benefit from our extensive experience in delivering top-notch HVAC solutions.

Fully Licensed & Insured
Rest easy knowing our team is fully licensed and insured for your protection.
Testimonials
What Our Clients Say?
Posted on Google Jeff Hanks I've had Nixon from Fireside Heating & Cooling over to our house twice in the last week (two separate issues) and he's been nothing but professional. He quickly identified the issue both times and either repaired or advised on the best course of action. Most importantly for me, he explained what was going on, how to prevent it in the feature and didn't try to scare us with "this is going to be a huge problem - you need to spend a large amount of money or replace your furnace and AC right now", like we so often here. He was very pragmatic in his approach and its clear he's trying to win customers the right way, through great customer service, transparency, and being fair.Posted on Google Mark Welle Jr. Nixon is awesome! He and his crew diagnosed and repaired my AC system when others thought it wasn't able to be fixed. He went out of his way to find out what as going on, educating me along the way, showing me his findings, and explaining what my options were, all with a friendly and knowledgeable style. He was able to quickly source the parts that were needed and made the repairs the next day. Nearly half the price of one of the other 'big brands' you see on TV. And Nixon is the absolute best guy overall to work with! You absolutely can't go wrong hiring Fireside Heating & Cooling for your repairs or even a new system. Had I needed a new system, which he NEVER tried to upsell me on, that too would have been $1000s less than others. No high pressure sales, no scare tactics, just an honest assessment and repairs at a fair price. What else could you ask for?!Posted on Google Jeff Cline Nixon was fantastic. Helped me through the whole process and answered every question and concern I had before even signing the contract.Posted on Google Jamie Wolff Fast and efficient, very polite, and friendly. He took the time to break everything down for me so I could fully understand what was going on with my system and where it had failed and why. I didn’t feel like I was being swindled, which was a nice change. A great experience overall.Posted on Google Corey Roberts Nixon was a straight shooter and gave me all my options. Never pressured us one way or another. Got a few quotes and his was most competitive on each option and never felt like there was any sacrifice in install quality or part quality. He fixed a lot of unrelated things on his dime to make sure we were best positioned, and best of all our cooling has significantly improved. Will recommend.Posted on Google Jeff Robbins All I can say is these guys rock! Replace one unit and air handler in 4 1/2 hours. The quote we received was thousands of dollars under the next lowest quote. Very respectful and will have my business moving forward.Posted on Google Mike Garcia Nixon was great. Communication was perfect. I knew immediately that he had skills. Everything was done to perfection. I recommend him and have already referred him to other people.Posted on Google Jennifer Morton Highly recommend! My AC is an older unit and I was worried I might need to replace it. They were able to diagnose the problem and repair it the same day. Nixon the technician was awesome! He was professional, honest and took the time to explain everything. Great experience!Posted on Google Tom Feeney Nixon and his team at Fireside heating and cooling did great work. Most importantly they communicated well and followed up to make sure all the work they did was completed to my satisfaction. They came in as the most affordable option between five quotes I took for my AC install. Thanks, NIxon.Posted on Google Annaliese Rutishauser Nixon did such an amazing job for us! He explained everything clearly and his price was completely fair. He was punctual, professional, and completed the job timely. We’re extremely happy we decided to go with him and will use him in the future.Load more
Other Services

AC Repair
Keep your home cool and comfortable with our expert AC repair services. We quickly diagnose and fix issues to restore your system's performance.

AC Maintenance
Regular AC maintenance extends the life of your system and keeps it running efficiently. Schedule your tune-up today to prevent costly breakdowns.

Furnace Repair
When your furnace breaks down, count on our skilled technicians to get it back up and running quickly, ensuring your home stays warm.

Furnace Replacement/Installation
Invest in a new, energy-efficient furnace with our expert installation services. We’ll guide you in selecting the best option for your heating needs.

Furnace Maintenance
Prevent unexpected furnace issues with our thorough maintenance services, designed to keep your heating system in peak condition.

Ductless Heating & Cooling Services
Experience flexible, energy-efficient comfort with our ductless heating and cooling solutions, perfect for any space.
How It Works
Simple Steps to Your Free Quote
Getting started with your HVAC project is easy. Follow these three simple steps, and we’ll provide you with a transparent, no-obligation quote that fits your needs and schedule.
Get In Touch
Call us or submit an online request, and rest assured, a dedicated member of our team will be in touch with you promptly.
Discuss Your Project
Speak to our experts about your project, and we’ll discuss product choices transparently, explaining the process step by step so you can make informed decisions.
Get a Quote
We’ll provide an accurate, obligation-free quote and work with you to schedule your HVAC project at a time that suits you.
Frequently Asked Questions
What are the signs that I need a new air conditioner?
Signs you may need a new air conditioner include frequent breakdowns, rising energy bills, inconsistent cooling, and the unit being over 10–15 years old. If repairs are becoming costly or ineffective, replacement might be more economical. Fireside Heating and Cooling offers expert assessments to guide your decision.
How do I choose the right AC unit for my home?
Selecting the right AC involves considering your home’s size, insulation, and climate. Fireside Heating and Cooling can perform a load calculation to recommend an appropriately sized unit, ensuring optimal efficiency and comfort. Factors like energy efficiency ratings and features should also be considered.
Are there financing options available?
Yes, Fireside Heating and Cooling offers flexible financing options for AC installations. These plans are designed to make your investment more manageable, with various terms and interest rates to suit your budget. Contact us to explore the best option for you.
Do you offer emergency AC installation services?
Fireside Heating and Cooling provides emergency AC installation services to ensure your home remains comfortable during unexpected breakdowns. Our team is available 24/7 to handle urgent installation needs promptly and professionally.
How can I schedule an AC installation?
Scheduling an AC installation with Fireside Heating and Cooling is simple. You can call our office directly or visit our website to request a free quote. Our team will assist you in selecting the right unit and scheduling a convenient installation time.
How long does AC installation take?
The duration of AC installation varies based on the complexity of the system and your home’s requirements. On average, a standard installation takes about 4–8 hours. Fireside Heating and Cooling ensures efficient and timely installations with minimal disruption to your daily routine.
What is the best time of year to install a new air conditioner?
The best times to install a new air conditioner are during the spring or fall. These seasons typically offer milder temperatures, allowing for more comfortable working conditions and potentially lower installation costs due to reduced demand.
How do I know if my current AC unit is the right size for my home?
An improperly sized AC unit can lead to inefficiency and discomfort. Fireside Heating and Cooling can perform a load calculation to determine if your current system is appropriately sized for your home’s cooling needs. This assessment ensures optimal performance and energy efficiency.
How long will my new air conditioner last?
With proper maintenance, a new air conditioner can last between 10 to 15 years. Regular servicing, such as annual tune-ups and timely repairs, can extend the lifespan of your unit, ensuring consistent performance and comfort.
What type of warranty do you offer on AC installations?
Fireside Heating and Cooling offers comprehensive warranties on all new AC installations. These warranties typically cover parts and labor for a specified period, providing peace of mind and protection against potential defects or issues. Specific terms vary by manufacturer and model.
Which areas do you serve?
We proudly serve the Denver-metro region including Aurora, Castle Rock, Centennial, Denver, Greenwood Village, Lakewood, Parker, Littleton and Lone Tree.

