10 Best HVAC Companies in Fort Knox, KY

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Last Updated: February 25, 2025

According to the U.S. Department of Energy, approximately 55% of the energy used in American homes is used for heating and cooling. In Fort Knox, you're likely looking to reduce this energy expense and save money on your bills.

Our list of the top HVAC companies in Fort Knox can help you save money by getting your HVAC system repaired, installed or replaced by the right person for the right price.

Top 10 Best HVAC Companies in Fort Knox

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A+ Derr Heating & Cooling

A+ Derr Heating & Cooling Logo

Our Rating

User Rating

1225 Gardiner Ln, Louisville, KY 40213 (502) 916-9782 aplusderr.com

Clear pricing policy

Reliable customer support

Informative resources

Prompt service delivery

Free quotes

Services Offered

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

Phelps Heating & Cooling Inc.

Phelps Heating & Cooling Inc. Logo

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User Rating

305 W Main St, Hodgenville, KY 42748 (270) 358-3167 phelpsheatingandcooling.com

Reliable customer support

Clear pricing policy

Informative resources

Prompt service delivery

Services Offered

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

Sal's Heating & Cooling, Plumbing & Sewer

Sal's Heating & Cooling, Plumbing & Sewer Logo

Our Rating

User Rating

100 Zachary Drive, Mt Washington, KY 40047 (502) 955-5551 salsheatandcool.com

Reliable customer support

Prompt service delivery

Informative resources

Free quotes

Clear pricing policy

Services Offered

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

KLM Heating & Cooling

KLM Heating & Cooling Logo

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User Rating

11216 Decimal Dr, Louisville, KY 40299 (502) 955-2062 klmheatingandcooling.com

Free quotes

Reliable customer support

Informative resources

Services Offered

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

Louisville Hvac Pro’s

Louisville Hvac Pro’s Logo

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User Rating

10810 Holsclaw Hill Rd, Fairdale, KY 40118 (502) 553-8534 louisvillehvacpros.com

Reliable customer support

Clear pricing policy

Free quotes

Informative resources

Services Offered

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

Prudential Heating & Air Conditioning

Prudential Heating & Air Conditioning Logo

Our Rating

User Rating

3302 Gilmore Industrial Blvd, Louisville, KY 40213 (502) 966-5813 prudentialhvac.com

Free quotes

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

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

Instant Aire Heating and Cooling

Instant Aire Heating and Cooling Logo

Our Rating

User Rating

4962 Hodgenville Rd, Greensburg, KY 42743 (270) 299-2269 instantaire.com

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

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

One Choice Mechanical

One Choice Mechanical Logo

Our Rating

User Rating

8611 National Turnpike, Fairdale, KY 40118 (502) 242-8204 ocmech.com

Clear pricing policy

Reliable customer support

Informative resources

Free quotes

Services Offered

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

Elder Heating and Air

Elder Heating and Air Logo

Our Rating

User Rating

5800 Fern Valley Rd #100, Louisville, KY 40228 (502) 825-0261 elderheatingandair.com

Clear pricing policy

Informative resources

Services Offered

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

John Waters Inc.

John Waters Inc. Logo

Our Rating

User Rating

2315 Watterson Trail, Louisville, KY 40299 (502) 896-0850 jwaters.com

Informative resources

Prompt service delivery

Free quotes

Services Offered

Maintenance
Furnace installation
Ac installation
Emergency services
Boiler installation
Indoor air quality
Ventilation
Filtration
Ductless
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 getting old, you might need an HVAC contractor for maintenance or replacement. Watch for these common signs that your system requires professional attention:

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

If you notice any of the above, have a local HVAC technician inspect your system. They can diagnose problems and recommend whether repair or full HVAC replacement is required.

Cost of HVAC Installation and Maintenance in Fort Knox

Your HVAC installation or maintenance cost varies depending on the style of unit. Common HVAC unit types include the following:

  • Split or mini-split: If your home doesn't have the right ductwork for central air or heating, you probably have a split HVAC system. Split or mini-split systems consist of interior units that regulate the temperature in individual rooms. These interior units are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions much like a standard split system, but is able to utilize either electricity or gas as energy sources.
  • Heat pump: Heat pumps transfer warm and cold air between your home and the outdoors. They don't generate their own heat or AC, so they function best in mild climates.
  • Packaged heating and air: Packaged HVAC systems are a practical choice for smaller houses. These systems have a single heating and cooling unit, normally located in an attic or basement. They're small, cost-effective, and easy to maintain.

HVAC maintenance prices differ depending on the particular service needed. HVAC systems are complex and might require different kinds of maintenance. Fees for common services are as follows:

HVAC Unit TypeCost
Split$1,839-$4,689
Hybrid Split$3,727-$6,866
Heat Pump$2,886-$29,404
Packaged Heating and Air$241-$402

Ways to Save Money on HVAC Costs

It’s important to make any essential HVAC fixes or replacements as needed, though they can be expensive. The good news is that homeowners have ways to minimize progressive deterioration and reduce the frequency of breakdowns.

  • Change filters regularly. Air flows most effectively through your HVAC system when you change out or clean the filters every 1–3 months. Also try not to let debris pile up on the external sections of your HVAC.
  • Change the position of your blinds seasonally. During winter, leave your blinds open so your home benefits from passive solar heat. In summer, keep blinds shut to block out heat. Doing both lowers the amount of work your HVAC system is required to do.
  • Monitor for potential problems. Keeping an eye out for problems, for instance by routinely checking your thermostat and energy bills, lets you resolve them before they get too expensive.
  • Keep your system clean. Cleaning your ductwork, condenser fan blades, grills, and indoor evaporator coil regularly helps keep your HVAC system working efficiently and lowers the risk of mold growth. The National Air Duct Cleaners Association recommends cleaning your HVAC system when it begins to look dirty.
ServiceCost
Filter Replacement$60-$161
Condensor Cleaning$1,207-$3,622
Thermostat Repair$80-$201
Ductwork Cleaning$386-$966

How To Choose a Local HVAC Company

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

Compare Multiple Bids

Contact at least three HVAC providers for quotes. Describe your issues and schedule an in-person inspection if possible. Compare providers' diagnoses, suggested repairs, estimated costs, timeframes, and warranties. Avoid companies that pressure you or demand upfront payment.

Check Credentials

When picking an HVAC provider, choose one with technicians that have the proper training, licenses, and experience. HVAC contractors in all states must obtain a Section 608 Technician Certification from the Environmental Protection Agency (EPA). This certification is mandatory for all technicians who "maintain, service, repair or dispose of equipment that could release refrigerants into the atmosphere." An individual must pass an exam (the type of exam depends on the type of equipment they intend to work with) to be certified by the EPA. All other licensing requirements are handled on a state-by-state basis.

In Kentucky, HVAC contractors must be licensed by the Department of Housing, Buildings and Construction. Contractors can hold apprentice, journeyman, or master standing. Master contractors are required to have at least two years of experience, need to have general liability insurance, and must participate in ongoing education. You should also check a company's reviews and complaints on sites such as the Better Business Bureau (BBB), Yelp, and Google Reviews. Pick a company with positive feedback and good customer testimonials.

Understand Work Details

It’s important to understand what the work process will look like. For HVAC repairs, the company should explain the specific parts that need replacement and why. Confirm that your technician will clean and test the full system afterward to guarantee everything is working correctly. When replacing your HVAC, ask the contractor to describe the new features, model, brand, energy efficiency, and estimated installation time. Before signing a contract, ask about the process your provider will use to properly size the new system for your home and how much it will cost.

Compare Warranties

Good HVAC companies offer warranties on service and equipment installations. The more complete the coverage, the better. Review warranty details between companies and pick the one that provides the most comprehensive protection for a fair price.

Get Quote in Writing

Get written quotes before beginning any HVAC work. The quote should outline costs for both materials and labor. Read all terms carefully before signing.

Frequently Asked Questions About HVAC in Fort Knox, KY

You should have your HVAC system inspected about twice annually. After the inspection, your technician will tell you if any services are needed. You should also schedule an inspection if you notice new issues such as strange noises, leaks, or unusual smells. If your home has ductwork, you should have it inspected every few years.

Usually, it's a good idea to schedule inspections 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 typically 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 the temperature of your home. During all seasons, keep your thermostat as close to the outside temperature as possible, and avoid making drastic changes — adjust it only a few degrees at a time. You may also consider installing a smart thermostat.

Generally, whole-system HVAC installation or replacement takes one to three days. Installing or replacing a furnace or air conditioning unit takes anywhere from about half a day up to two days. The exact amount of time will vary depending on things like the size of your home, how easily accessible different sections are, and whether your technician finds any problems.

For a 2,000-square-foot home, you should look for around 2.5 to 5 tons of air conditioning capacity. If your home is larger than 1,000 square feet, central air will usually be more effective than window units for cooling.

For a 2,000-square-foot home, you should also look for a furnace that is between 50,000 and 80,000 BTUs (British thermal units).

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

Other Fort Knox, KY Home Services

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