Top HVAC Professionals near O Fallon, MO

Once you’ve decided what kind of heating and cooling unit you want to install in your home, you can begin looking for a reliable HVAC installer in your area. Start by asking family and friends if they have any contractor recommendations. You can also check resources like the Better Business Bureau, along with online reviews and ratings for HVAC installers near you.

Modernize offers homeowner reviews, BBB ratings, and Google ratings for all of our contractors so you can get a clear picture before making a hiring decision.

When you need air conditioning repair or replacement, you can often replace your current unit with a similar heating, ventilation, and air conditioning (HVAC) system. Depending on the climate in your area, you can choose the type of HVAC installation that works best for your home.

In regions with very cold winters, you may need a high-AFUE-rated furnace for heating and a large central air conditioner (up to 5 tons) for cooling. In milder climates, a heat pump may be enough to regulate your home’s temperature, or you might consider a ductless AC system instead of installing a full HVAC system.

Many homeowners choose a furnace and central AC unit that uses ductwork to circulate heated and cooled air. However, heat pumps and ductless mini-splits are also effective options for managing indoor comfort year-round.

HVAC replacement costs near you can range from $6,224 to $11,434. This includes installation of a new central AC unit and gas furnace combo, along with labor. If you also need to replace the ductwork, expect to add around $2,100 for a single-story, 2,000-square-foot home.

Use our HVAC cost calculator and pricing guide to estimate your total project cost and learn more about the factors that can affect it.

• How long have you been in business?


• How much experience do you have with my type of HVAC system?


• What’s your cost estimate for installing my new HVAC unit?


• Can you provide a list of references?


• Can you show proof of insurance, including your insurance company name, policy number, and coverage limits?


• Who will handle the warranty details and responsibilities?


• Can I get a fixed price in writing before signing a contract?

At your final meeting before the HVAC contractor begins installation, make sure to cover the following steps:

• Reconfirm your initial quote.


• Agree on a payment plan.


• Have the following on hand:
  
  
  
  • Your contract
  
  
  • Project plans
  
  
  • Any approved order changes
  
  
  • Bills and invoices
  
  
  • Proof of contractor insurance and/or permits
  
  
  • All relevant correspondence with your contractor
  
  
  
  

Yes. It’s always a good idea to hire a licensed or certified HVAC professional because they’ve demonstrated their skills and experience. Working with a qualified pro ensures that even the small details of your project are handled properly.

At Modernize, we perform regular quality checks on our contractors to maintain high standards. This includes:

• Reviewing business profiles and customer feedback


• Conducting background checks on contractor companies


• Verifying local licenses, certifications, and policy compliance

We quickly and easily connect you with trusted local HVAC repair contractors so you can get real quotes, compare prices, and choose the best fit for your project.

Most service calls cost $100 to $150 per hour, depending on your location and the time of day. This often includes an inspection and basic diagnostic testing.

Experts recommend twice a year: once in spring for cooling and again in fall for heating. Regular maintenance helps your system run efficiently and last longer.

A typical service call lasts one to two hours, depending on what needs to be checked or fixed. Bigger repairs or tune-ups may take longer.

With regular maintenance, most HVAC systems last 15 to 20 years. Heat pumps and mini-splits can last around 10 to 15 years.