This year is our 50th year in of our family owned and operated business!

Your Plumber & HVAC Contractor Serving DeWitt & St. Johns


For Furnace repair in St. Johns MI, call a company you trust.


Repair • Replace • Maintenance

Call Chasco Plumbing & Heating LLC for furnace repair and replacements, ventilation problems, and heat pump repair or furnace cleaning, and seasonal safety inspections. We are your complete Home Air Comfort Specialists.

Call the HVAC Specialists, Chasco Plumbing & Heating LLC today for high-efficiency furnace installations that will keep you and your family in low cost, eco-friendly comfort all year!

With 51 years in business and experience in servicing just about every make and model, we're sure we can service and repair your furance or air conditioning unit. Our technicians have the knowledge and skills to confidently get the job done. Give us a call to schedule service or we're also available 24/7 for emergencies.

Single-Stage Furnaces

Traditional single-stage furnaces are designed to heat your home during the absolute coldest weather in your geographic area. Therefore they run at their fullest capacity whenever they are in operation regardless of the temperature outside. The furnace and fan is either on or off.

Two-Stage Furnaces

Two-stage furnaces are more efficient and more effective at heating. Two-stage furnaces have two heating stages: low and high. The low stage runs at a lower capacity and will heat your home as long as possible until it needs extra power to keep your home at the same temperature set on your thermostat. This is when the high stage kicks in.

Multi-Stage or Variable Speed Furnaces

A "variable speed" furnace does not actually refer to the furnace itself. It refers to the furnace's blower motor. The blower motor is the component that determines the amount of air the blower should deliver to your home. Because the motor in a variable speed blower motor comes equipped with intelligent technology it is able to monitor and adjust your blower settings to account for items in your home that restrict airflow such as ductwork design, furnace location and dirty filters. With these continuous adjustments the blower helps your furnace to run as efficiently as possible, they use approximately six times less electricity than a standard conventional blower. This not only helps you to save money, but it also helps to ensure your indoor comfort, regardless of the temperature outside.

While variable speed HVAC equipment provides huge savings and benefits in the winter, it also provides equal advantages in the summer. A variable speed blower can remove up to four times more humidity from your home in the summer than a conventional blower, and therefore increases the efficiency of the outdoor unit. In addition variable speed furnaces are generally the quietest on the market. While the typical payback on a variable speed furnace is 4-5 years, they will last 15-20+ years if they are well maintained with a yearly service plan.

Heating Services

  • Furnace repair
  • Furnace service and cleaning
  • High-efficiency furnace
  • Heat pumps
  • Indoor air quality
  • Coil and duct sanitation
  • Home protection- smoke alarms, co detector
  • Whole-house humidifier
  • Duct repair/ reroute/ modification
  • Wifi/ smartphone thermostats
  • Residential zoning systems
  • Ductless mini systems
  • Thermostat service
  • Filter replacement