Best Air Conditioning & Heating Companies in Colorado
Colorado

Best Air Conditioning & Heating Companies in Colorado

Find trusted air conditioning & heating professionals serving Colorado. All contractors are independently researched and certified.

Only companies with a Certified Best Pick® badge meet our strict satisfaction & licensing requirements and are eligible for the Best Pick Guarantee.

21
Recommended Pros
49k+
Verified Reviews
Locally FocusedResearch-VerifiedFree Service

21 Contractors

Only companies with a Certified Best Pick® badge meet our strict satisfaction & licensing requirements and are eligible for the Best Pick Guarantee.

Applewood Plumbing Heating & Electric
Certified Best Pick

Applewood Plumbing Heating & Electric

Certified Pro

"When you call Applewood Plumbing Heating & Electric, you can expect:<br>? A job that is done right the first time<br>? Screened and licensed technicians; we'll even send their photo and bio before they arrive so you know who to expect<br>? Fully stocked, bright orange trucks<br>? A follow-up phone call after your appointment<br>? 100% satisfaction guaranteed<br>? We're open 7 days a week, 6 a.m. to 10 p.m., to serve you at your convenience with no overtime charges."

Certified Best Pick Licensed Insured Workers' Comp
Wirenut Home Services
Certified Best Pick

Wirenut Home Services

Certified Pro

"Our focus is to serve all of our clients' plumbing needs with the highest level of professionalism, so that they may focus on the important things in their lives, like family, friends, and business."

Certified Best Pick Licensed Insured Workers' Comp
Applewood Plumbing Heating & Electric
Certified Best Pick

Applewood Plumbing Heating & Electric

Certified Pro

"When you call Applewood Plumbing Heating & Electric, you can expect:<br>? A job that is done right the first time<br>? Screened and licensed technicians; we'll even send their photo and bio before they arrive so you know who to expect<br>? Fully stocked, bright orange trucks<br>? A follow-up phone call after your appointment<br>? 100% satisfaction guaranteed<br>? We're open 7 days a week, 6 a.m. to 10 p.m., to serve you at your convenience with no overtime charges."

Certified Best Pick Licensed Insured Workers' Comp
Lion Home Service
Certified Best Pick

Lion Home Service

Certified Pro

"Our team is ready to serve you. We want to make your home safe and comfortable for your family and we'll do everything we can to WOW you with our service."

Certified Best Pick Licensed Insured Workers' Comp
A&A Professional Cooling and Heating
Certified Best Pick

A&A Professional Cooling and Heating

Certified Pro

"A&A Professional Cooling and Heating was started 26 years ago by Alan Patterson and his wife Anna Patterson with a commitment to quality customer care and professional service. A&A takes pride in providing honest, personal service that creates trust and builds lifetime relationships with the people we serve. Our vision is to offer the best customer experience by providing fair and honest solutions to comfort needs with a friendly and professional approach, and to build a trustworthy company that values people and is a blessing to all."

Certified Best Pick Insured Workers' Comp
AAA Service Plumbing, Heating & Electric, Inc.
Certified Best Pick

AAA Service Plumbing, Heating & Electric, Inc.

Certified Pro

"The key to success at AAA Service is respect. Respect for ourselves, our co-workers, and our customers. When we send someone to your home, they must excel in customer service, technical capabilities, and have a pleasant personality. That's why we interview over 70 people before we find someone we will hire. We promise that each and every AAA employee will do their very best to help each customer have a positive and successful resolution to the issue in their home."

Certified Best Pick Licensed Insured Workers' Comp
Plumbline Services
Certified Best Pick

Plumbline Services

Certified Pro

"Plumbline Services has been earning the trust of our clients since 1998. We pride ourselves on impeccable service and quality customer care relating to emergency plumbing, heating, cooling, and electrical services. Our highly trained representatives and technicians work together to ensure your complete satisfaction."

Certified Best Pick Licensed Insured Workers' Comp
Blue Sky Plumbing, Heating, Cooling & Electric
Certified Best Pick

Blue Sky Plumbing, Heating, Cooling & Electric

Certified Pro

"Our history: We trace our roots back to 1916 and Archie Lanyon, who became a registered Colorado Master Plumber. His grandson, Steve, and great-grandson, Jesse, would follow in his footsteps and bring Archie's code of ethics of 'Quality Work, Honest Dealing, and Dependability' into the 21st century. Blue Sky has now evolved into a full-service contractor providing services in all areas of plumbing, heating, air conditioning, and electrical. We are proud to stand by those same values handed down from Archie."

Certified Best Pick Licensed Insured Workers' Comp
Brothers Plumbing & Heating
Certified Best Pick

Brothers Plumbing & Heating

Certified Pro

"Brothers Plumbing, Heating & Electric was founded by my father in 1980 and continues to be a family owned and operated company. Over the years we have built a reputation in the Denver Metro area and in the plumbing, HVAC, and electrical industry as being honest and committed to going above and beyond for our clients, team members, and community with our commitment to our win, win, win philosophy. Brothers is dedicated to and passionately adheres to our core values: Family, Care, Excellence. You can expect 'No Overtime Charges 7 Days a Week from 7am-8pm, 2 Hour Appointment Windows, and a Precise Price' approved by you before we start the work."

Certified Best Pick Insured Workers' Comp
Time Plumbing, Heating & Electric Inc.
Certified Best Pick

Time Plumbing, Heating & Electric Inc.

Certified Pro

"Time is locally owned and operated by Denver natives Brad and Judi Apple. We search far and wide to find the best employees we can. We then do extensive training to help them become better at servicing our customers. All of our employees take pride in everything they do. We will work hard to earn and keep your business. We have over 1,000 5-star reviews."

Certified Best Pick Licensed Insured Workers' Comp
AAA Service Plumbing, Heating & Electric, Inc.
Certified Best Pick

AAA Service Plumbing, Heating & Electric, Inc.

Certified Pro

"The key to success at AAA Service is respect. Respect for ourselves, our co-workers, and our customers. When we send someone to your home, they must excel in customer service, technical capabilities, and have a pleasant personality. That's why we interview over 70 people before we find someone we will hire. We promise that each and every AAA employee will do their very best to help each customer have a positive and successful resolution to the issue in their home."

Certified Best Pick Licensed Insured Workers' Comp
Horizon Services
Certified Best Pick

Horizon Services

Certified Pro

"We provide home and office services such as plumbing, heating, cooling, water heaters, and garage doors for clients who expect superior customer service from technically trained experts 24 hours per day."

Certified Best Pick Licensed Insured Workers' Comp
Blue Sky Plumbing, Heating, Cooling & Electric
Certified Best Pick

Blue Sky Plumbing, Heating, Cooling & Electric

Certified Pro

"Our history: We trace our roots back to 1916 and Archie Lanyon, who became a registered Colorado Master Plumber. His grandson, Steve, and great-grandson, Jesse, would follow in his footsteps and bring Archie's code of ethics of 'Quality Work, Honest Dealing, and Dependability' into the 21st century. Blue Sky has now evolved into a full-service contractor providing services in all areas of plumbing, heating, air conditioning, and electrical. We are proud to stand by those same values handed down from Archie."

Certified Best Pick Licensed Insured Workers' Comp
Mighty Plumbing, Heating, Air & Electric
Certified Best Pick

Mighty Plumbing, Heating, Air & Electric

Certified Pro

"Mighty Plumbing, Heating, Air & Electric has over 20 years of experience being a go-to resource for plumbing, heating, air, and electrical services in the Denver metro area. Our mantra has always been to provide exceptional customer service at an affordable price. Our family-owned-and-operated shop focuses on the customer's needs and what needs to be fixed instead of looking for problems that don't exist. We take pride in our services and will work with you to ensure you are satisfied and safe! 'Pound for Pound, the Best Around.'"

Certified Best Pick Licensed Insured Workers' Comp
AAA Service Plumbing, Heating & Electric, Inc.
Certified Best Pick

AAA Service Plumbing, Heating & Electric, Inc.

Certified Pro

"The key to success at AAA Service is respect. Respect for ourselves, our co-workers, and our customers. When we send someone to your home, they must excel in customer service, technical capabilities, and have a pleasant personality. That's why we interview over 70 people before we find someone we will hire. We promise that each and every AAA employee will do their very best to help each customer have a positive and successful resolution to the issue in their home."

Certified Best Pick Licensed Insured Workers' Comp
Heart Heating Cooling Plumbing Electric
Certified Best Pick

Heart Heating Cooling Plumbing Electric

Certified Pro

"We're not your average home service company. Founded with a genuine desire to make life easier for homeowners, Heart is a local business that values trust, hard work, and treating people right. We know you have plenty of options when it comes to home services, but here at Heart, we like to think we bring something different to the table: Personal service, a passion for quality, and a genuine desire to help. Let's work together to keep your home safe and comfortable!"

Licensed Insured Workers' Comp
Heart Heating Cooling Plumbing Electric
Certified Best Pick

Heart Heating Cooling Plumbing Electric

Certified Pro

"We're not your average home service company. Founded with a genuine desire to make life easier for homeowners, Heart is a local business that values trust, hard work, and treating people right. We know you have plenty of options when it comes to home services, but here at Heart, we like to think we bring something different to the table: Personal service, a passion for quality, and a genuine desire to help. Let's work together to keep your home safe and comfortable!"

Licensed Insured Workers' Comp
Heart Heating Cooling Plumbing Electric
Certified Best Pick

Heart Heating Cooling Plumbing Electric

Certified Pro

"We're not your average home service company. Founded with a genuine desire to make life easier for homeowners, Heart is a local business that values trust, hard work, and treating people right. We know you have plenty of options when it comes to home services, but here at Heart, we like to think we bring something different to the table: Personal service, a passion for quality, and a genuine desire to help. Let's work together to keep your home safe and comfortable!"

Licensed Insured Workers' Comp
Heart Heating Cooling Plumbing Electric
Certified Best Pick

Heart Heating Cooling Plumbing Electric

Certified Pro

"We're not your average home service company. Founded with a genuine desire to make life easier for homeowners, Heart is a local business that values trust, hard work, and treating people right. We know you have plenty of options when it comes to home services, but here at Heart, we like to think we bring something different to the table: Personal service, a passion for quality, and a genuine desire to help. Let's work together to keep your home safe and comfortable!"

Licensed Insured Workers' Comp

Recent Project Requests in Colorado

Real homeowners looking for air conditioning & heating in your area

Lone Tree Circle

"Determine whether Thermasol steam system is fully operative."

Apr 13, 2026
Allenspark

"Reduce radon, a friend can install fan"

Mar 21, 2026
Certification Standards

How Colorado Air Conditioning & Heating Companies Earn Best Pick Certification

Only air conditioning & heating companies that meet our strict standards earn Best Pick status.

Customer Satisfaction

Air Conditioning & Heating companies must maintain a 4.0+ rating and an 80% recommendation rate.

Licensing & Insurance

Current state contractor license verification and general liability insurance for air conditioning & heating work

Business Stability

Minimum 1 year in business with established local presence

Verified State Standing

Maintain active business registration and in good standing with the state

Operational Excellence

Consistent air conditioning & heating service quality across all projects

Annual Re-Certification

Must re-qualify every year through new research

Frequently Asked Questions

Common questions about Certified Best Pick® air conditioning & heating companies in Colorado

If your furnace seems to cycle on and off constantly without reaching your thermostat's set point, it may be struggling with the state's significant altitude. At high elevations, the lower air density reduces heating capacity by nearly 15%, meaning an improperly adjusted gas furnace works much harder to keep up with Front Range winters. Another warning sign is indoor air that feels uncomfortably parched or seeing woodwork start to separate; because our high plains climate is semi-arid, a failing whole-house humidifier can't offset the bone-dry winter air, leading to health issues and static. Finally, if you have a 1970s-era ranch with a basement furnace, keep an ear out for banging or whistling from the trunk lines. Those aging sheet metal joints often loosen over decades of thermal expansion from our 50-degree daily temperature swings, leaking conditioned air before it ever reaches your vents. These aren't just minor inconveniences; they are signals that your comfort system needs professional attention.

Before you schedule a technician, a few simple checks tailored to our Rocky Mountain climate might solve the issue. First, inspect your air filter, especially during the late summer wildfire smoke season; ash and fine particulates can clog filters in days rather than months, choking your airflow and causing the system to overheat. Next, head outside to your condenser unit—Front Range hailstorms often flatten the delicate metal fins or pack them with debris, which kills cooling efficiency during our dry, 90-degree July days. If your furnace won't fire up in the middle of a blizzard, check that the PVC intake and exhaust vents on the side of your house aren't buried under drifting snow, as this safety blockage will prevent the system from starting. If your unit is struggling, check with Xcel Energy or your local municipal utility for smart thermostat settings that might be limiting your peak demand usage. However, if you detect the faint smell of rotten eggs or hear clicking from the gas valve, stop and call a professional, as gas furnace ignition and pressure systems are dangerous to handle without specialized tools.

In Colorado, HVAC services focus heavily on addressing our extreme climate shifts and high-altitude requirements. Altitude adjustment for gas furnaces is a primary service; because our air is thinner, local technicians must precisely calibrate burners to prevent incomplete combustion and soot buildup that shortens system life. Humidification system installation is also essential because our extremely dry winter air causes wood floors to shrink and irritates respiratory health—technicians frequently retrofit whole-home humidifiers into existing ductwork. You will also see a high demand for swamp cooler to central AC conversions in older urban neighborhoods like Park Hill or Old North End, as our warming summers increasingly push traditional evaporative coolers past their limits. Finally, advanced air filtration services, such as upgrading to MERV-13 filters or installing whole-home air purifiers, have become standard to protect indoor air from annual wildfire smoke events that trap particulates against the Front Range.

To find the best HVAC company in Colorado, start by ensuring the contractor is properly credentialed with a valid state mechanical license, general liability insurance, and workers’ compensation. A technician should be EPA 608-certified for any refrigerant handling and carry NATE certification as a mark of technical expertise. A key sign of local knowledge is familiarity with the aggressive rebate programs from utilities like Xcel Energy or Colorado Springs Utilities, which can significantly offset the cost of high-efficiency systems. Furthermore, they should emphasize high-altitude adjustments for furnaces, as failing to de-rate a furnace for our 5,000-foot-plus elevation leads to premature heat exchanger failure. You can simplify this search by using Best Pick Reports, which vets companies using a stringent 6-step process including license verification and customer surveys. Only companies with a 4.0+ rating or 80% survey satisfaction are certified, and their work is backed by a $2,500 guarantee on labor costs.