Cooling

Service & Replacement of A/C Equipment

Air Conditioner Service

We repair and provide maintenance on all makes and models of HVAC equipment. Our family-friendly and qualified service technicians are trained and tested in the field. We hire the best to provide the best service to our customers by having our technicians being NATE-certified and continue to attend training in our industry.

Air Conditioner Maintenance

With a twice a year Elite Safety & Efficiency Agreement we’ll contact you every six months to schedule your system checkup and cleaning, you can rest assure your home will remain comfortable and operate efficiently and economically all year long. Please contact us for information on our Elite Safety & Efficiency Agreement.

Air Conditioner Replacement

Is your old air conditioner struggling to keep your home cool during those scorching summer days? At Johnson Heating & Cooling, we specialize in seamless air conditioner replacements in the Wentzville area, ensuring that you receive top-notch service and quality products.

Upgrade to a more efficient model today and not only enjoy lower energy bills but also experience enhanced comfort and a more pleasant living environment. Our expert team is here to help you find the perfect air conditioning solution to meet your needs. Let’s work together to keep your home refreshing and enjoyable this season!

A trane air conditioner on a white background

A gray air conditioner is sitting on a white surface.

A rumford air conditioner is shown on a white background

Types Of AC Units

Single Stage
A single-stage air conditioner only has one motor speed. Consequently, the air conditioner is operating at its full, 100 percent capacity at all times. When the room reaches the desired temperature on the thermostat, the air conditioner motor will turn off and cease to push and blow cool air through the ducts and vents of the home. When the room temperature rises above the thermostat setting, the air conditioner turns back on again to disburse cool air through the home's ductwork system and vents.
Two Stage
A two-stage air conditioner uses two motor speeds to blow cool air into rooms. The motor will run at 100 percent of its capacity or around 67 percent of its capacity. When it is blowing at 100 percent, that is the second stage; the 67 percent capacity is the first stage. The air conditioner is signaled which stage to use by the thermostat. For example, if you have been away from home and turned the air conditioner off, the thermostat will signal the air conditioner to use the second, full-capacity stage to cool the home quickly and reach the desired temperature set on the thermostat. Once the desired room temperature is reached, the thermostat will signal the air conditioner to drop down to the first stage.