10 Best HVAC Companies in Windsor, CO

Give us a call now for an immediate match with a local pro.

Click to Call(833) 824-3371

(833) 824-3371

Last Updated: February 25, 2025

On average, 55% of the energy used in American homes is for heating and cooling, according to the Department of Energy. In Windsor, much of your energy expenses probably come from running your heat during the winter. The average resident spends $170 on heating every month.

We've put together this guide to Windsor's top HVAC companies to help you find the best person for your job and get your system into its best shape ever.

Top 10 Best HVAC Companies in Windsor

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

KJ Thomas Mechanical

KJ Thomas Mechanical Logo

Our Rating

User Rating

6175 Trevarton Dr, Longmont, CO 80503 (303) 435-8141 kjthomasmechanical.com

Reliable customer support

Clear pricing policy

Free quotes

Informative resources

Prompt service delivery

Services Offered

Filtration
Duct cleaning
Indoor air quality
Smart home integration
Ductless
Boiler repair
Ventilation
Ac installation
Boiler installation
Radiant heating
Maintenance
Furnace repair
Furnace installation
Inspection

Sanders and Johnson Heating and Cooling

Sanders and Johnson Heating and Cooling Logo

Our Rating

User Rating

7100 Broadway #7K, Denver, CO 80221 (720) 594-2176 sandersandjohnson.com

Reliable customer support

Free quotes

Informative resources

Prompt service delivery

Clear pricing policy

Services Offered

Boiler installation
Furnace repair
Ac installation
Filtration
Boiler repair
Indoor air quality
Ac repair
Emergency services
Ductless
Furnace installation
Inspection
Maintenance

Controlling Systems

Controlling Systems Logo

Our Rating

User Rating

7000 N Broadway #1-106, Denver, CO 80221 (720) 445-8906 controllingsystemsco.com

Free quotes

Prompt service delivery

Clear pricing policy

Informative resources

Services Offered

Furnace installation
Maintenance
Ductless
Boiler installation
Ventilation
Filtration
Emergency services
Ac installation
Radiant heating
Boiler repair
Smart home integration
Ac repair
Indoor air quality
Furnace repair

MileHi HVAC Contractor Denver

MileHi HVAC Contractor Denver Logo

Our Rating

User Rating

4885 S Broadway, Englewood, CO 80113 (720) 770-0055 milehihvac.com

Informative resources

Clear pricing policy

Free quotes

Reliable customer support

Services Offered

Duct cleaning
Ventilation
Ductless
Furnace repair
Boiler installation
Indoor air quality
Maintenance
Ac installation
Furnace installation
Inspection
Filtration
Emergency services
Ac repair

Now Heating and Air

Now Heating and Air Logo

Our Rating

User Rating

8661 Rosemary St, Commerce City, CO 80022 (303) 287-8000 nowha.com

Reliable customer support

Informative resources

Prompt service delivery

Clear pricing policy

Free quotes

Services Offered

Indoor air quality
Boiler installation
Ductless
Maintenance
Furnace installation
Emergency services
Ac installation
Duct cleaning
Ac repair
Furnace repair
Inspection
Boiler repair

Fort Collins Heating & Air Conditioning

Fort Collins Heating & Air Conditioning Logo

Our Rating

User Rating

208 Commerce Dr #4, Fort Collins, CO 80524 (970) 279-3750 fortcollinsheating.com

Informative resources

Reliable customer support

Clear pricing policy

Services Offered

Furnace repair
Ac installation
Duct cleaning
Radiant heating
Boiler installation
Furnace installation
Ductless
Ac repair
Emergency services
Ventilation
Filtration
Boiler repair
Maintenance
Indoor air quality

Affordable Heating & Air Conditioning, Inc.

Affordable Heating & Air Conditioning, Inc. Logo

Our Rating

User Rating

1740 Elder Ave, Greeley, CO 80631 (970) 352-2820 affordablehvac.com

Free quotes

Prompt service delivery

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Ventilation
Furnace repair
Maintenance
Filtration
Furnace installation
Ac installation
Ductless
Duct cleaning
Ac repair
Emergency services
Indoor air quality
Zoning systems

D.N.I. Heating-Cooling-Refrigeration-Plumbing

D.N.I. Heating-Cooling-Refrigeration-Plumbing Logo

Our Rating

User Rating

14196 Co Rd 7, Mead, CO 80542 (720) 868-5291 dniheating.com

Informative resources

Free quotes

Reliable customer support

Clear pricing policy

Services Offered

Radiant heating
Furnace repair
Furnace installation
Inspection
Maintenance
Boiler installation
Ductless
Ac installation
Indoor air quality
Filtration
Emergency services
Ac repair
Smart home integration

Steel T

Steel T Logo

Our Rating

User Rating

2750 S Shoshone St, Englewood, CO 80110 (303) 761-9276 steelt.com

Reliable customer support

Informative resources

Free quotes

Prompt service delivery

Clear pricing policy

Services Offered

Furnace repair
Ductless
Furnace installation
Ac repair
Ventilation
Ac installation
Emergency services
Maintenance
Indoor air quality
Inspection
Filtration

WireNut Home Services

WireNut Home Services Logo

Our Rating

User Rating

4901 E Dry Creek Rd Suite 290, Centennial, CO 80122 (303) 731-1966 thewirenut.com

Reliable customer support

Clear pricing policy

Informative resources

Free quotes

Services Offered

Ductless
Ac installation
Furnace repair
Duct cleaning
Maintenance
Ac repair
Boiler installation
Emergency services
Filtration
Furnace installation
Inspection
Boiler repair
Today's Homeowner Ranking Methodology

Today's Homeowner looks at dozens of datapoints on hvac companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

Signs You May Need HVAC Repair or Replacement

If your home's HVAC system isn't working correctly or suffering from a lot of wear and tear, you may need to hire an HVAC contractor for maintenance or replacement. Look for these common indicators that your system requires expert attention:

  • Frequent breakdowns and need for repairs
  • Refrigerant leaks
  • Corrosion, cracking, or rust
  • Unusually high energy bills
  • Odd noises when the system turns on
  • Temperature control issues or thermostat malfunctions
  • Poor air circulation or uneven heating/cooling
  • An HVAC system that's over 15 years old

Arrange an inspection if you notice any of these issues. A local technician can inspect your system, detect problems, and determine whether you need repairs or a new HVAC unit.

Cost of HVAC Installation and Maintenance in Windsor

The cost of HVAC installation or maintenance changes depending on the kind of unit you have. Common kinds of HVAC units include the following:

  • Split or mini-split: Homes without ductwork for central heating and cooling frequently have split or mini-split HVAC systems. These systems consist of indoor units in each room to regulate temperature. These indoor units connect to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions comparably to a regular split system. It gives flexibility by providing the option to use either electricity or gas for energy.
  • Heat pump: Heat pumps move warm and cool air between your home and outside. These systems don't make their own heat or AC, so they work better in milder climates and may not be as effective during Windsor's cold winters.
  • Packaged heating and air: Packaged HVAC systems are good for smaller homes. Packaged systems consist of a single combined heating and cooling unit, typically located in a basement or attic. This unit tends to be efficient, compact, and easy to maintain.

The price of HVAC maintenance also varies depending on the kind of work you're having done. HVAC systems are complex and might require different kinds of maintenance. The cost of some common repairs is as follows:

HVAC Unit TypeCost
Split$1,893-$4,827
Hybrid Split$3,836-$7,068
Heat Pump$2,971-$30,269
Packaged Heating and Air$249-$414

Ways to Save Money on HVAC Costs

It's important to repair or replace your HVAC system when it's broken, but it can also be expensive. Thankfully, there are some steps you can take to reduce wear and tear on your HVAC.

  • Change filters regularly. Changing or cleaning your air filters every 30–90 days helps air flow smoothly through your HVAC system. We also recommend regularly clearing dirt and debris away from the external parts of your system.
  • Keep your system clean. Regularly cleaning ductwork, grills, indoor evaporator coil, and condenser fan blades helps your HVAC system run efficiently and lowers the risk of mold. The National Air Duct Cleaners Association recommends cleaning your system when it starts to look dirty.
  • Monitor for potential problems. Monitoring the efficiency of your HVAC system — for instance by reviewing your thermostat settings and energy bills — helps you find and solve issues before they get too expensive.
  • Change the position of your blinds seasonally. Closing your blinds in the summer blocks some passive solar heat from getting indoors. Opening the blinds in the winter allows this same heat to help warm your home. Both of these measures help decrease the work required from your home’s HVAC system.
ServiceCost
Filter Replacement$62-$166
Condensor Cleaning$1,243-$3,729
Thermostat Repair$83-$207
Ductwork Cleaning$398-$994

How To Choose a Local HVAC Company

Knowing what to look for in an HVAC company is important for a successful project. Look for an experienced, licensed contractor that can offer you peace of mind and make sure your system provides reliable heating and air conditioning for your home.

Compare Multiple Bids

Request estimates from three or more HVAC companies. Explain your issues and ask if technicians can inspect your system in person. Review each contractor's diagnoses, recommended solutions, estimated cost, warranties, and timeline. Avoid providers that pressure you or demand payment before work.

Check Credentials

It's important to choose an HVAC company that employs technicians with the proper qualifications and expertise. HVAC contractors in all states have federal requirements set by the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, a contractor must pass an exam (the specific exam depends on what kind of equipment they plan to work with). Section 608 certification is required for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." All other licensing requirements are handled by the state.

Colorado doesn't have state-level licensing requirements for HVAC contractors; however, those who run an HVAC business are required to have a Colorado business license, as well as insurance. It's a good idea to check with your municipal government to learn if there are local licensing requirements for HVAC contractors. Any contractors who do electrical or plumbing work in addition to HVAC work must be registered with the State Plumbing Board or the Colorado Electrical Board, respectively. You should also look at reviews and complaints on sites like Yelp, the Better Business Bureau (BBB), and Google Reviews. Choose a company with glowing reviews and testimonials about fantastic customer experiences.

Understand Work Details

Make sure you understand the details of any project before it begins. When getting HVAC repairs, have your provider detail which parts require replacement and why. Confirm that your technician will clean and test your system after the repair to ensure that everything works. When replacing your HVAC system, ask the contractor to describe the new estimated installation time, brand, features, energy efficiency, and model. Before work starts, ask how your provider plans to accurately size the unit for your home and how much it will cost.

Compare Warranties

Reputable HVAC companies stand behind their work with warranties. Compare warranties from different companies, keeping in mind that broader coverage is better. Look for the provider that offers the most coverage for a reasonable price.

Get Quote in Writing

Get written quotes before starting HVAC work. The quote should cover costs for both labor and materials. Review all terms carefully before signing.

Frequently Asked Questions About HVAC in Windsor, CO

You should have your HVAC system inspected approximately twice yearly. Following an inspection, your technician will tell you if any services are needed. You should also schedule an inspection if you start noticing issues such as leaks, unusual smells, or strange noises. If your home has ductwork, it should be inspected every few years.

Normally, it's best to have your HVAC system inspected in the spring and fall, as these times tend to be less busy. This also helps make sure your system is prepared for the summer and winter, when it likely sees the most use.

You can save energy throughout the year by reducing the amount of work it takes for your HVAC system to maintain your home's temperature. During all seasons, keep your thermostat as close to the outside temperature as you can, and avoid making drastic changes — adjust it only a few degrees at once. You might also consider purchasing a smart thermostat.

It takes roughly one to three days to have your HVAC system installed or replaced. If you only need a furnace or a single air conditioning unit, this may take anywhere from a few hours up to two days. This timeline can be influenced by the size of your house, the accessibility of your system, and any issues your technician discovers.

For a 2,000-square-foot home, you'll want a furnace that's between 50,000 and 80,000 BTUs (British thermal units). In Windsor, you'll likely look for a furnace on the higher end of or above this range.

For a 2,000-square-foot home, you'll also want to purchase an air conditioning unit with between 2.5 and 5 tons of capacity. Typically, if your home is over 1,000 square feet, central air will be more effective than window air conditioning units.

Usually, HVAC financing is offered through a third-party lender. If your HVAC company doesn't have financing options, you could consider taking out your own loan. Be sure to speak with a financial advisor and your HVAC company to determine what options are available and appropriate for your situation.

There are a number of ways you can make your HVAC system more energy-efficient:

  • Keep your air ducts clean and change or clean your air filters on a regular basis.
  • Have regular inspections to take care of problems as they come up.
  • Keep your attic well-ventilated and make sure all doors and windows are well-sealed.
  • Install a smart thermostat. If you don't want to or can't buy one, try to keep your inside temperature as close to the outside temperature as you can.
  • When it comes time to replace any part of your HVAC system, explore Energy Star-certified or similar environmentally friendly options.

Other Windsor, CO Home Services

Loading map...