Furnace Replacement / Installation
Gas Furnace Replacement & Installation in Highlands Ranch
Upgrade your home’s heating with our professional gas furnace replacement and installation services. We provide expert guidance and quality installation to ensure your new furnace operates efficiently and effectively, keeping your home warm for years to come.

Expert Consultation
We help you choose the right furnace for your home, considering efficiency, size, and budget to ensure optimal comfort.

Seamless Installation
Our certified technicians handle the entire installation process with precision, ensuring your new furnace runs smoothly from day one.
Warmth That Lasts
Professional Furnace Installation
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 Replacement/Installation
Upgrade to a more efficient air conditioning system with our professional installation services. We’ll help you find the perfect unit for your home.

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 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.
Frequently Asked Questions
What factors should I consider when choosing a new furnace?
When selecting a new furnace, consider factors like energy efficiency, system size, fuel type, brand reputation, and warranty. Fireside Heating and Cooling offers expert guidance to help you choose the right furnace tailored to your home’s needs and budget.
How long does a furnace installation take?
Furnace installation typically takes one day, depending on the system and home layout. Fireside Heating and Cooling ensures a smooth, efficient installation process to minimize downtime and quickly restore your comfort.
Do you offer financing options for furnace replacement?
Yes, Fireside Heating and Cooling offers flexible financing options for furnace replacements. We provide HVAC services with no money down and affordable monthly payments, making it easier for you to upgrade your heating system without financial strain.
How do I know if my furnace needs replacement or just repair?
If your furnace is over 10–15 years old, requires frequent repairs, or struggles with efficiency, replacement may be the better choice. Fireside Heating and Cooling helps homeowners weigh repair costs against long-term savings with a new, energy-efficient system.
What is the average cost of furnace replacement?
The cost of furnace replacement varies based on factors like system size, brand, and installation complexity. Fireside Heating and Cooling provides transparent pricing and free estimates to help you understand the investment required for a new furnace.
What brands of furnaces do you install?
Fireside Heating and Cooling installs top-quality furnace brands, including American Standard, known for their reliability and efficiency. Our team helps you select the best brand and model to suit your home’s heating needs and budget.
Is there a warranty on new furnace installations?
Yes, Fireside Heating and Cooling offers warranties on new furnace installations, providing peace of mind and protection for your investment. We ensure that your new system operates efficiently and reliably for years to come.
Do you provide maintenance services for newly installed furnaces?
Yes, Fireside Heating and Cooling offers comprehensive maintenance services for newly installed furnaces. Regular maintenance helps ensure optimal performance, extends the lifespan of your system, and prevents unexpected breakdowns.
How can I schedule a furnace replacement consultation?
To schedule a furnace replacement consultation with Fireside Heating and Cooling, you can call us at (303) 506-9716 or visit our website to request a free quote. Our team will assist you in selecting the best system for your home.
When should I consider replacing my furnace?
Consider replacing your furnace if it’s over 10–15 years old, requires frequent repairs, or is inefficient. Fireside Heating and Cooling helps homeowners evaluate their current system and determine if replacement is the most cost-effective solution for long-term comfort.
What areas do you serve?
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.

