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13 Years
experience
Emergency
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Your Trusted HVAC Partner in Wentzville, MO
Founded in 2013, Johnson Heating and Cooling is a family-owned business serving Wentzville, Missouri, and surrounding areas. Our team specializes in HVAC installation, repair, and maintenance, with a focus on personalized solutions for residential comfort. With over 25 years of combined experience, owners Tracy and Shaun Johnson lead a NATE-certified team committed to quality service. We offer geothermal systems, ductless mini-splits, water heaters, and air quality solutions.

Our twice-yearly maintenance agreements ensure system efficiency, while partnerships with Wells Fargo provide financing options. We prioritize customer education and use high-efficiency equipment to deliver reliable, energy-saving solutions tailored to each home's unique needs.
Services
HVAC Installation Emergency Repairs Geothermal Systems Ductless Mini-Splits Water Heater Installation Air Quality Solutions Zoning Systems Maintenance Agreements
Details
  • Year established: 2013
Highlights and features
  • 25+ years of combined HVAC experience from certified professionals
  • Family-owned business with personalized customer service
  • NATE-certified technicians for industry-recognized expertise
  • 24/7 emergency service for urgent heating/cooling needs
  • Financing options available through Wells Fargo partnership
Associations and certifications
  • NATE (North American Technician Excellence)
Services
HVAC Installation
We install high-efficiency heating and cooling systems tailored to your home's specific needs. Our technicians handle furnace, air conditioner, and heat pump installations with precision and care. Using top-brand equipment like Trane and ClimateMaster, we ensure optimal performance and energy savings while maintaining manufacturer warranties through proper installation techniques.
Emergency Repairs
Our NATE-certified technicians provide urgent HVAC repairs day or night. With 24/7 availability, we address system failures promptly using fully stocked service vehicles. From frozen AC units to furnace malfunctions, our team diagnoses and resolves issues efficiently to restore comfort and prevent further damage during critical temperature conditions.
Geothermal Systems
We design and install geothermal heating and cooling systems that leverage stable underground temperatures. These systems achieve 400-600% efficiency by using earth loops for heat exchange. Our ClimateMaster installations reduce energy costs up to 80% while providing year-round comfort through innovative technology that works efficiently even during extreme Missouri weather conditions.
Ductless Mini-Splits
Our ductless mini-split solutions deliver targeted temperature control for additions or specific rooms. These systems require no ductwork and feature wall-, ceiling-, or floor-mounted units. Ideal for garages, sunrooms, or home additions, our installations provide energy-efficient heating and cooling with quiet operation and customizable temperature settings for individual comfort zones.
Maintenance Agreements
Our twice-yearly Elite Safety & Efficiency Agreements ensure optimal system performance. Technicians perform comprehensive inspections, cleaning, and adjustments to maintain efficiency. Regular maintenance extends equipment lifespan, prevents breakdowns, and preserves warranties while ensuring your HVAC system operates at peak efficiency for both heating and cooling seasons.
People
Tracy Johnson
Owner/Operator
With a family HVAC legacy spanning 30+ years, Tracy manages customer relations and office operations. Her industry knowledge from childhood shapes our client-focused approach.
Shaun Johnson
Owner/Operator
A licensed Journeyman HVAC technician with 25+ years experience, Shaun oversees technical operations and quality control for all installations and service work.
Questions
What HVAC services do you offer in Wentzville?
We provide complete HVAC solutions including installation, repair, and maintenance for furnaces, air conditioners, geothermal systems, ductless mini-splits, and water heaters.
Do you offer emergency HVAC service?
Yes, our team provides 24/7 emergency service for urgent heating and cooling issues with response times prioritized for critical situations.
Are financing options available?
We offer financing through Wells Fargo for approved applicants, making system upgrades and replacements more accessible for homeowners.
What areas do you service?
We serve Wentzville and surrounding communities including O'Fallon, St. Charles, Defiance, and all of Lincoln, Warren, and St. Charles counties.
What maintenance plans are available?
Our Elite Safety & Efficiency Agreement includes twice-yearly system checkups and cleaning to maintain optimal performance and extend equipment lifespan.
Are your technicians certified?
All our service technicians are NATE-certified and participate in ongoing industry training to maintain the highest technical expertise.
Reviews (6)
Chuck Hart
Jun 05, 2021 Report
They are the best and friendliest HVAC I have ever used. They were able to squeeze me into their schedule during a busy day.
Keith Renken
May 22, 2021 Report
Our A/C went out on Sunday, and I called the first local HVAC company that popped up via Google. So glad I did. I called 1st thing Monday morning and had a technician here Monday afternoon. Nathan was quick to find the problem and honest with the solution. We were up and running Tuesday around noon, so only a couple of days of hot in the house. Everything has been running great, and I do highly recommend Johnson Heating and Cooling for your HVAC needs. Affordable and reliable.
Keith
Marc Feith
Feb 22, 2021 Report
Critical:Punctuality,Responsiveness
Bought a used furnace...was told it was in good working condition....got it all hooked up and no heat...was told by shaun that he was going to get the part to fix it ....coldest temp. Of the year...-6 degrees....glad I have a place
Service:Repair heating system
Doug Pope
Dec 05, 2020 Report
Positive:Professionalism,Punctuality,Responsiveness
Service and professionalism from the first call. Highly recommend this company. Price was as quoted and requests were filled.
Services:Repair heating system,Install thermostat,Install heating system
Cody Quist
Aug 29, 2020 Report
I'm in the process of finishing my basement and HVAC was the one part I didn't want to do myself. I got numerous quotes from other companies and Johnson was very fair. Their quote came in at less than half of most of the other companies. Shaun was super friendly and responsive and they came out within a few days and did a great job. Highly recommend!
Aaron W.
Jun 07, 2020 Report
Did a fantastic job replacing our ac unit the very next day to ensure that my 4 kids did not have to deal with the heat. They were fast, professional, and caring. You can definetly tell they value their customers , and we will be continuing to use them for all of our have needs.