Your home is your sanctuary, and at Thielmann Heating, Cooling & Plumbing, we’re here to help keep it that way. Since 1929, we’ve been the trusted name in the Grand Rapids area for heating, cooling, and plumbing services that go beyond quick fixes—we focus on long-term comfort, reliability, and efficiency. Our team takes a hands-on approach, ensuring that every repair, installation, and maintenance job is done with precision and care. We know what it takes to keep a home running smoothly, and we’re committed to delivering Slinger home services that give you confidence in your home’s essential systems, no matter the season. When you need the best, call the Thielmann team at (262) 299-6197 or contact us online for more information.
Dependable Slinger Heating Services

Having a dependable heating system means more than just staying warm—it’s about keeping your home safe and comfortable through the toughest months of the year. Whether your current system is outdated or struggling, we’re here to help. The team of Slinger HVAC technicians at Thielmann takes the time to understand your space, energy needs, and comfort preferences to recommend the best heating solution for your home, so you can enjoy consistent, reliable warmth all season long. Our heating services in Slinger include:
Boiler Maintenance & Repair
Boilers offer steady, even heating, but they need regular care to keep running efficiently. Our Slinger HVAC technicians provide comprehensive maintenance, checking for leaks, flushing the system, and ensuring proper pressure so your boiler continues to deliver dependable warmth. If it’s time for a replacement, we’ll guide you through the best options available.
Furnace Installation & Replacement
Is your old furnace struggling to keep up? A new, energy-efficient system can make a world of difference in both warmth and energy costs. We help homeowners choose the right furnace for their home, ensuring it’s the perfect size and properly installed for maximum efficiency. No more cold spots, no more sky-high heating bills—just reliable warmth when you need it most.
Preventative Heating Maintenance in Slinger
Regular tune-ups help keep your system running smoothly and efficiently, reducing the risk of breakdowns when you need heat the most. Our heating maintenance services ensure your heating system in Slinger stays in peak condition, saving you money on repairs and energy bills in the long run.
Fast, Reliable Heating Repairs
A broken heating system in the middle of winter is more than an inconvenience—it’s an emergency. We respond quickly to diagnose the issue and get your heat back on as soon as possible. From minor fixes to major repairs, we have the expertise to restore warmth to your home without unnecessary delays.
Slinger Cooling Services That Beat the Heat
If your Slinger air conditioning system is working overtime and still not keeping up, it might be time for an upgrade or a professional maintenance call. Our team of local HVAC technicians focuses on more than just quick fixes—we assess airflow, insulation, and system efficiency to make sure your cooling setup is working at its best. Our cooling services in Slinger include:
- AC Installation & Replacement: If your current system isn’t keeping up, we’ll help you choose and install an energy-efficient AC unit that delivers powerful cooling without breaking the bank.
- Ductless Mini-Split Systems: Perfect for homes without central air, mini-splits offer precise temperature control while saving energy.
- AC Repairs: Strange noises? Weak airflow? Warm air instead of cold? We quickly diagnose and fix any issue, so your system runs like new again.
- AC Maintenance Plans: Prevent breakdowns and extend the life of your AC with seasonal tune-ups that improve performance and reduce energy costs.
Comprehensive Plumbing Services in Slinger

A plumbing issue can throw your whole day off track, whether it’s an annoying drip, a water heater that suddenly quits, or a pipe that bursts without warning. Instead of stressing over leaks and repairs, let us handle it. With Slinger plumbing services from Thielmann, you get a team that will tackle every job with precision, whether it’s a simple fix or a major installation, so you can get back to your routine without the headache.
- Leak Detection & Pipe Repairs: We locate and repair leaks before they lead to major water damage, ensuring your pipes remain durable and efficient.
- Garbage Disposal Installation & Repair: Whether installing a new unit or repairing a jammed disposal, we help keep your kitchen running smoothly.
- Toilet Repairs & Replacements: From fixing persistent leaks to installing modern, water-efficient toilets, we provide expert solutions for your bathroom.
- Plumbing System Inspections: Regular inspections can catch small issues before they become major problems, helping you avoid costly repairs and water damage.
- Water Heater Installation & Service: We install, repair, and maintain both traditional and tankless water heaters, ensuring you always have hot water when you need it.
- Fixture Installations & Upgrades: Upgrade your kitchen and bathroom with high-efficiency sinks, faucets, and toilets that enhance both function and style.
- Sump Pump Installation & Maintenance: Keep your basement dry with professional sump pump installation and maintenance to prevent flooding and water damage.
- Water Softener Systems: Improve your water quality by reducing hard water buildup, protecting appliances, and making daily cleaning easier.
Why Homeowners Trust Thielmann Heating, Cooling & Plumbing
For nearly a century, we’ve built a reputation for excellence, and we’re proud to be the go-to home service provider in Slinger. Here’s why homeowners continue to choose us:
- Generations of Expertise: With over 90 years in business, we’ve seen it all and know what works best for homes in the area.
- Top-Quality Products & Workmanship: We only use the best materials and equipment, ensuring every repair and installation is built to last.
- Personalized Service: Every home is unique, and we take the time to find solutions that fit your specific needs and budget.
- Honest, Upfront Pricing: No surprises, no gimmicks—just straightforward pricing and clear explanations of the work we do.
- Fast & Friendly Service: We respect your time and work efficiently to restore comfort to your home as quickly as possible.
Schedule Your Service in Slinger Today
At Thielmann Heating, Cooling & Plumbing, we know that a comfortable home isn’t just about functioning comfort systems—it’s about peace of mind. Whether your heating needs a tune-up, your AC could use an upgrade, or your plumbing is acting up, we’re here to provide expert service you can trust. Reach out today by calling (262) 299-6197 to schedule an appointment and let us handle the hard work while you enjoy the comfort of a well-maintained home.
Recent Jobs and Reviews in Slinger, WI
Job Locations and Reviews
Responded to no cooling complaint on residential air conditioning system over 10 years old. Diagnosed failed compressor and presented repair options to customer. Customer approved compressor replacement, and unit was successfully repaired and returned to normal cooling operation.
Conducted comprehensive duct cleaning estimate for residential HVAC system featuring vertical air handler unit with flexible ductwork connections in basement utility area. Assessed accessible ductwork, air handler cabinet, and adjacent furnace system with copper piping to determine scope of cleaning services required for optimal system performance and indoor air quality improvement.
Completed full HVAC system installation including new air conditioning condenser unit and air handler. The outdoor condenser unit was positioned on a base pad against the building exterior with proper clearances maintained, refrigerant lines connected, and electrical service established. Inside, installed the air handler on elevated supports with all refrigerant lines properly insulated and secured, PVC condensate drain lines routed and terminated correctly, and electrical connections completed to code. System was pressure tested, evacuated, charged with refrigerant to manufacturer specifications, and fully commissioned with all operational parameters verified within normal range.
Completed installation of dual-tank Capital water softener system and Iron Curtain filtration unit in basement utility area. Systems were plumbed with copper piping, control heads mounted and programmed, and all connections pressure-tested for leaks. Equipment is fully operational and ready for service.
Completed full HVAC system replacement including new furnace and air conditioning condenser unit. Installed outdoor AC unit on concrete pad with proper refrigerant line connections running along exterior wall, performed refrigerant charging and system diagnostics using manifold gauges to verify proper operation. Indoor furnace unit installed in basement utility area with all necessary electrical connections completed and system fully tested for proper heating and cooling functionality.
Conducted comprehensive HVAC system evaluation for complete replacement estimate at residential property. Assessed existing Armstrong Air furnace and outdoor condensing unit, documented current equipment specifications, measured installation space, evaluated ductwork and electrical infrastructure, and photographed both indoor and outdoor components to provide accurate replacement recommendations and system sizing requirements.
Responded to service call for non-functional garbage disposal unit. Successfully removed existing Badger brand disposal unit from under kitchen sink and disconnected all associated plumbing connections including drain lines and electrical supply. Installed new standard drain basket assembly with proper strainer and tailpiece to replace disposal system. Reconfigured under-sink plumbing using existing PVC drain piping, ensuring proper trap configuration and secure connections. Tested drain system for proper flow and verified no leaks at all connection points.
Responded to emergency service call for non-functional air conditioning system. Performed comprehensive assessment of existing HVAC equipment including furnace and AC unit, documented current system configuration with exterior venting and indoor mechanical components, and provided detailed replacement estimate for complete heating and cooling system upgrade.
Completed full HVAC system installation including new outdoor condensing unit and indoor evaporator coil. Installed air conditioning unit on vibration-dampening pad with proper electrical disconnect box and conduit mounted to exterior wall. Ran refrigerant lines from outdoor unit to indoor coil located in basement mechanical room. Mounted evaporator coil with supply and return ductwork connections, ensuring proper airflow configuration. Utilized manifold gauges to charge system with refrigerant to manufacturer specifications and verified proper pressures. All electrical connections completed by licensed electrician. Installation performed with required permits and inspections. System tested for proper operation, refrigerant levels confirmed, and unit left in full working order.
Responded to no cooling call on aging residential split system. Upon arrival, found outdoor condensing unit inoperative with visible signs of weathering and corrosion on electrical components. Performed diagnostic testing, identified failed contactor and capacitor due to age-related deterioration, and completed necessary repairs to restore cooling operation.
Completed installation of new water meter and associated piping system. Installed vertical copper piping configuration with brass ball valves, expansion tanks, and monitoring equipment. Routed refrigerant lines along wall with proper support brackets and mounted sensors with electrical connections. All connections were brazed and tested for proper operation.
Completed full HVAC system installation including outdoor condensing unit and indoor evaporator coil. Installed new beige cylindrical condenser unit on concrete pad against building exterior with proper clearances for airflow and service access. Mounted evaporator coil assembly with blower housing in mechanical room, integrated with existing ductwork system. Established refrigerant line connections between outdoor and indoor components. Installed condensate drain lines using white PVC piping with proper pitch and termination. Coordinated with licensed electrician for dedicated circuit and disconnect installation. All work performed under obtained permits in compliance with local building codes and manufacturer specifications. System tested for proper operation, refrigerant charge verified, and airflow confirmed throughout distribution system.
Responded to emergency HVAC service call to assess air conditioning system and furnace replacement needs in basement utility area. Documented existing ductwork configuration, electrical connections, and identified water drainage concerns around floor drain that may impact equipment installation and longevity.
Conducted on-site assessment for complete HVAC system replacement, evaluating existing Rheem high-efficiency air conditioning unit and natural gas furnace located in basement. Inspected outdoor condenser unit components, electrical disconnect panel with dedicated AC circuit breaker, and associated service equipment to determine replacement specifications and requirements for new system installation.
Responded to service call for AC unit short cycling - turning on briefly then shutting off after a few minutes before restarting. Upon arrival, performed diagnostic evaluation of outdoor condensing unit. Inspected electrical components in junction box and found contactor showing signs of age and corrosion. Connected manifold gauge set to check refrigerant pressures and system operation. Tested capacitor function and verified all electrical connections. Identified worn contactor as primary cause of intermittent operation and short cycling behavior. System components showed significant weathering consistent with extended outdoor exposure but capacitor tested within normal specifications.
Responded to no cooling complaint on residential air conditioning system. Upon arrival, found outdoor condensing unit inoperative. Visual inspection revealed heavily corroded dual run capacitor with rust damage on terminal connections and cap, along with significant debris accumulation on condenser fan grille. Connected manifold gauge set to system for diagnostic testing. Determined failed capacitor was preventing compressor and condenser fan motor from starting. Replaced defective capacitor with new PROTECH unit, ensuring proper electrical connections and secure mounting. Cleaned debris from condenser fan grille to restore adequate airflow. Cycled system on, verified compressor and fan motor operation, and confirmed proper refrigerant pressures. System restored to normal cooling operation.
Conducted on-site evaluation for complete HVAC system replacement in basement mechanical room. Assessed existing furnace and air conditioning equipment, documented current installation including copper refrigerant line routing, electrical connections, and ductwork configuration. Photographed equipment specifications, clearances, and surrounding utility space to prepare comprehensive replacement estimate for new heating and cooling system.
# HVAC Service Report - No Cool Condition Responded to a no cooling call on a residential HVAC system less than 10 years old. Upon arrival, conducted a comprehensive system diagnostic to identify the cause of cooling failure. Inspected the furnace unit and associated ductwork components located in the basement mechanical room. Performed visual inspection of the air handler, ductwork, and refrigerant lines. Examined copper refrigerant piping for proper installation and potential leak points. Checked condensate drain system including black plastic drain valves and fittings for proper operation and blockages. Assessed the condition of metal ductwork, noting weathering and surface discoloration consistent with normal system operation in a basement environment. Evaluated furnace control panel operation and verified proper electrical connections. Inspected PVC vent pipes for proper exhaust ventilation. Tested system controls and thermostat communication to identify cooling mode failure po
Responded to no cooling complaint on aging HVAC system. Upon arrival, performed diagnostic inspection of both indoor furnace unit and outdoor condensing units. Accessed furnace cabinet to inspect internal components, electrical connections, and control systems. Evaluated outdoor equipment condition, noting two condensing units present at property with vegetation growth around units affecting airflow. Completed system assessment and documented equipment condition with photos for service records.
Responded to no cooling complaint on aging residential air conditioning system. Upon arrival, connected manifold gauges to outdoor condenser unit and performed system diagnostics. Inspection revealed dirty evaporator coil with significant dust and debris accumulation restricting airflow, which was contributing to reduced cooling capacity. Assessed overall system condition noting unit age and general wear on outdoor components. Performed necessary testing to determine refrigerant levels and system pressures to evaluate compressor and overall system performance.