About Littleton Heating and Air Conditioning

Littleton Heating and Air Conditioning VanLittleton Heating and Air Conditioning has been serving the Denver Metro area since 1972. We have seen incredible changes within our industry over time but one constant has always been our commitment to provide our customers with unsurpassed quality, exceptional service, and unequaled value with all of their heating and air conditioning needs. All of our work has always been backed by a 100% satisfaction guarantee and minimum of 1 year parts and labor warranty and longer in most cases.

With the technological advances being made with heating and air conditioning equipment, continuous up to date training, provides Littleton Heating and Air Conditioning the ability to be a leader in our industry. All of our service and installation technicians participate in N.A.T.E. “North American Technician Excellence” testing and certification programs. Employing N.A.T.E. certified technicians is a benefit for us and our customers, helping to insure proper diagnosis and repair, to maintain operating efficiencies, and provide a safe and comfortable living environment.

All employees go through background and drug screening, and must possess a valid driver’s license to be eligible for employment with Littleton Heating and Air Conditioning. Our focus on reliable, highly trained, honest, and ethical employees is the reason we have been able to retain our customers over the years and continue to grow and prosper.

We are a Lennox Dealer and this working relationship has given our employees state of the art factory training. Although we are a Lennox Dealer our service technicians also receive training from various other sources so we are able to service and repair all brands and types of HVAC equipment.

We look forward to being able to serve you with all of your heating and air conditioning needs. Please, give us a call with any questions you might have, to schedule a service call us for a FREE estimate on replacement heating and air conditioning equipment.

Gold Star BBB Littleton Heating and Air Conditioning

Better Business Bureau

We have been Accredited by the Better Business Bureau since 1984 and have an A+ rating

BBB is the authority on trust in the marketplace, it sets and upholds high standards for ethical marketplace behavior. BBB accreditation is a coveted honor earned by elite businesses and charities. It is the preeminent resource to turn to for objective, unbiased information on businesses and charities. A free BBB Reliability Reports and BBB Wise Giving Reports help you make the right purchasing or donation decision. BBB offers dispute resolution programs for consumers and businesses when there is difference in viewpoints.


We are Lennox Expert Dealer

Littleton Heating and Air Conditioning in the News HVAC


We are member of ACCA “Air Conditioning Contractors of America”

ACCA LogoACCA is a non-profit association serving more than 60,000 professionals and 4,000 businesses in the HVACR community, working together to promote professional contracting, energy efficiency, and healthy, comfortable indoor environments.


We are employing NATE “North American Technician Excellence” certified technicians

NATE CertifiedNorth American Technician Excellence (NATE,) headquartered in Arlington, VA., was founded in 1997 and is the nation’s largest non-profit certification organization for heating, ventilation, air conditioning and refrigeration technicians. NATE is the only technician certification organization governed, owned, operated, developed and supported by the HVACR industry.

We are licensed and insured in all the areas we serve.


In the past, making consumers comfortable at home has been simply a matter of providing them with quality products and services, now we’re going beyond basic comfort, with sophisticated products that give consumers greater control over their home environments. We’re also building and maintaining a reputation for trust by meeting independent standards for performance and customer satisfaction.

We know from recent studies that trust is even more important than price to most consumers, for this reason, building and maintaining a reputation for trust and reliability is absolutely essential to the success of our business. As a Lennox Dealer, customer satisfaction is the cornerstone of all we do.