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10 Best HVAC Companies in St. Peters, MO

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Written By Bradford Cuthrell

Last Updated February 2024

On average, American homeowners devote 55% of their home energy usage to heating and cooling, according to the U.S. Department of Energy. You don't want to spend more than you need to on temperature control in your St. Peters home, so it's important to make sure all systems are functioning properly.

Use our guide to the top HVAC companies in St. Peters to find the right one for you and your home. Our topic contractors can help you reduce your bills while still staying comfortable.

Top 10 Best HVAC Companies in St. Peters

Stay Cool Climate Control

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407 Sonderen St, O'Fallon, MO 63366 (636) 747-1762 staycool-hvac.com

Free quote

Reliable customer support

Informative resources

Clear pricing policy

Prompt service delivery

Services Offered

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

Jerry Kelly Heating & Air Conditioning

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4631 N St Peters Pkwy, St Peters, MO 63304 (636) 757-8506 jerrykelly.com

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Clear pricing policy

Informative resources

Reliable customer support

Services Offered

Ac repair
Duct cleaning
Furnace repair
Inspection
Indoor air quality
Filters
Maintenance
Ductless
Ac installation
Furnace installation

Superior Service

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17722 Chesterfield Airport Rd, Chesterfield, MO 63005 (314) 717-0639 superior-service.com

Reliable customer support

Informative resources

Clear pricing policy

Services Offered

Ac repair
Ventilation
Boiler repair
Furnace installation
Furnace repair
Boiler installation
Ac installation
Ductless
Indoor air quality
Maintenance
Inspection

Hoff Heating & AC

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1520 Kemmar Ct, O'Fallon, MO 63366 (636) 388-4141 hoffheating.com

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Reliable customer support

Clear pricing policy

Services Offered

Geothermal heating
Ac installation
Ac repair
Furnace installation
Indoor air quality
Furnace repair
Maintenance
Filtration
Ventilation
Ductless

Swiss Air Heating & Cooling, LLC

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406 E Wabash St, O'Fallon, MO 63366 (636) 978-7800 swissairstl.com

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Clear pricing policy

Free quote

Reliable customer support

Services Offered

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

No Problem Heating and Cooling

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1565 Kisker Rd, St Peters, MO 63304 (636) 400-7776 npmheatingandcooling.com

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Free quote

Clear pricing policy

Reliable customer support

Services Offered

Maintenance
Ac installation
Inspection
Emergency services
Ac repair
Indoor air quality
Ductless
Geothermal heating

Faszold Heating and Cooling

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1613 E Terra Ln, O'Fallon, MO 63366 (636) 735-7842 faszold.com

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Reliable customer support

Informative resources

Clear pricing policy

Services Offered

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

Fresh Air Heating & Cooling

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612 Spirit Valley E Dr, Chesterfield, MO 63005 (636) 224-6106 ineedfreshair.com

Prompt service delivery

Informative resources

Clear pricing policy

Reliable customer support

Services Offered

Maintenance
Ductless
Indoor air quality
Ac repair
Furnace repair
Filtration
Inspection

Cisco Heating & Air Conditioning Inc

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3727 N St Peters Pkwy, St Peters, MO 63376 (636) 477-0100 ciscoheating.com

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Reliable customer support

Free quote

Clear pricing policy

Prompt service delivery

Services Offered

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

Agers Heating & Air Conditioning

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64 Boone Hills Dr, St Peters, MO 63376 (636) 422-5665 callagers.com

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

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

An HVAC system that's broken or past its lifespan likely needs professional attention for maintenance or replacement. Watch for these indicators that your system needs service:

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

If you notice any of the above, it's wise to have a local HVAC technician inspect your system. They can pinpoint problems and let you know whether repair or full HVAC replacement is the best course of action.

Cost of HVAC Installation and Maintenance in St. Peters

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

  • Split or mini-split: If your home doesn't have the right ductwork for central air or heating, you likely have a split HVAC system. Split or mini-split systems consist of internal units that control the temperature in individual rooms, and that are all connected to an outdoor unit.
  • Hybrid split: A hybrid split HVAC system functions comparably to a regular split system. It provides flexibility by having the option to use either electricity or gas for energy.
  • Heat pump: Heat pumps work by moving warm and cool air between your home and the outdoors. These systems don't generate heat or air conditioning themselves, and are better for more moderate climates.
  • Packaged heating and air: Packaged HVAC systems are good for smaller houses. Packaged systems consist of a single heating and cooling unit that's usually located in a basement or attic. This unit tends to be efficient, compact, and easy to maintain.

HVAC maintenance costs vary based on the specific services required. HVAC systems can be complex and potentially require several different services. Price ranges for typical jobs are as follows:

HVAC Unit Type Cost
Split $1,882-$4,798
Hybrid Split $3,814-$7,026
Heat Pump $2,953-$30,089
Packaged Heating and Air $247-$412

Ways to Save Money on HVAC Costs

Taking care of necessary HVAC repairs and replacements when needed is crucial, but can be costly. Fortunately, there are actions you can take to minimize wear and tear over time on your system.

  • Change filters regularly. Changing or cleaning your air filters every 1–3 months helps air flow smoothly through your HVAC system. You should also try to prevent dirt and debris from building up around the outside areas of your system.
  • Monitor for potential problems. Monitoring the efficiency of your HVAC system — for instance by checking your thermostat settings and energy bills — helps you find and solve issues before they get too expensive.
  • Change the position of your blinds seasonally. Keeping your blinds open in the winter helps you take advantage of passive solar heating. Keeping them closed in the summer helps keep some of this heat out. Both of these measures help reduce the amount of work your HVAC system needs to do.
  • Keep your system clean. Keeping your indoor evaporator coil, grills, condenser fan blades, and ductwork clean helps your system function optimally and reduces the risk of mold growth. The National Air Duct Cleaners Association recommends that you clean your HVAC system when it starts to look dirty.

Service Cost
Filter Replacement $62-$165
Condensor Cleaning $1,236-$3,707
Thermostat Repair $82-$206
Ductwork Cleaning $395-$988

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 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. Explain your issues and schedule an in-person inspection if possible. Compare contractors' diagnoses, suggested repairs, estimated costs, timeframes, and warranties. Avoid providers that pressure you or demand upfront payment.

Check Credentials

It's important to choose an HVAC company that employs technicians with the appropriate qualifications and expertise. In all states, HVAC contractors have federal requirements from the Environmental Protection Agency (EPA). To obtain the EPA Section 608 Technician Certification, individuals must pass an exam (the type of exam depends on what kind of equipment they intend 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 on a state-by-state basis.

Missouri doesn't have state-level licensing requirements for HVAC contractors; however, most municipalities have local requirements. It's important to check with your local government to understand requirements for licenses like HVAC Contractor or HVAC Journeyman Contractor. You can also check that a company holds a valid business license. Checking reviews on Google Reviews, Yelp, the Better Business Bureau (BBB), and similar sites can aid your decision as well. Choose a provider with great reviews and reports of positive experiences from customers.

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. Get confirmation that your technician will clean and test the full system afterward to ensure proper functioning. When getting a replacement, ask the contractor to explain the new HVAC system model, estimated installation time, energy efficiency, features, and brand. Before signing a contract, you should understand how your provider will size the system appropriately for your home and the price you'll pay.

Compare Warranties

Reputable HVAC companies stand behind their services with warranties. Compare warranties from different companies, while remembering that more comprehensive coverage is better. Look for the company that offers the most coverage for a reasonable price.

Get Quote in Writing

Always get HVAC bids in writing before work begins. A detailed quote will cover costs for both labor and materials. Make sure that you understand all terms before signing the contract.

Frequently Asked Questions About HVAC in St. Peters, MO

You should have your HVAC system inspected about twice a year. Following an inspection, your technician will tell you what services are required. You should also schedule an inspection if you notice new issues such as strange noises, leaks, or unusual smells. If your system 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 likely sees the most use.

You can save energy throughout the year by reducing the amount of power your HVAC system uses to maintain your home's temperature. During all seasons, keep your thermostat as close to the outside temperature as possible, and try to adjust it only a few degrees at a time. You might also consider getting a smart thermostat.

It takes roughly one to three days to have an HVAC system installed or replaced. If you only need an air conditioning unit or a furnace, this can take anywhere from a few hours up to two days. This timeline can be affected by the size of your home, how easily accessible your system is, and any new 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).

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

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

  • Make sure your air ducts remain clean, and change or clean your air filters regularly.
  • Schedule regular inspections to take care of issues as they arise.
  • 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 keeping your inside temperature as close to the outside temperature as you can.
  • When it comes time to replace any part of your system, explore Energy Star-certified or other environmentally friendly options.

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