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) 315-3067 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 Whether your current system is outdated or struggling, we’re here to help.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) 315-3067 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
Slinger, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Slinger, WI between May 2026 and June 2026.
The most recent job was on June 9, 2026.
Thielmann Heating, Cooling & Plumbing has completed 180 jobs in Slinger, WI in the last 12 months.
Job Locations and Reviews
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.
Responded to no cooling complaint on residential HVAC system over 10 years old. Upon arrival, discovered severe electrical failure at outdoor condenser unit with extensive heat damage, burned wiring, and melted insulation throughout the electrical compartment. The condenser's electrical components had catastrophically failed, rendering the unit inoperable and creating a potential safety hazard. Due to the age of the equipment and extent of electrical damage, recommended full system replacement rather than repair. Customer approved replacement of complete HVAC system including outdoor condenser unit and indoor furnace assembly to restore cooling capability and ensure safe, reliable operation.
Responded to no cooling complaint on 10+ year old Lennox air conditioning system. Connected refrigerant manifold gauges to assess system pressures and diagnose compressor and refrigerant charge operation. Performed diagnostic testing to determine cause of cooling failure and system performance issues.
Responded to no cooling complaint on aging residential air conditioning system. Upon inspection, found system low on refrigerant with active leak causing condensate overflow onto floor. Connected manifold gauges to assess system pressures and refrigerant charge levels. Diagnosed control board operation and verified electronic components functioning properly with LED indicators showing normal status. Due to age of unit (10+ years) and extent of refrigerant leak, recommended system evaluation for repair versus replacement options.
Responded to emergency service call for AC system evaluation. Conducted comprehensive assessment of existing Bryant furnace and HVAC system in basement mechanical room, documenting current equipment condition, ductwork configuration, and PVC condensate drainage system. Provided detailed replacement estimate for complete system upgrade.
Completed installation of Bradford White power vented natural gas water heater, model RG1V5036N19, 50-gallon capacity with 40,000 BTU input rating. Unit installed in unfinished basement area with proper clearances per manufacturer specifications, connected copper supply piping, and integrated power vent system for safe combustion exhaust.
Completed estimate for replacement of existing Carrier furnace and air conditioning system located in upstairs closet. Assessed current HVAC equipment configuration, including furnace positioned in utility closet at top of stairs alongside water heater, documented existing installation conditions, and provided recommendations for new system installation to replace aging heating and cooling equipment.
Installed Capital brand water softener system in basement utility area, including mounting digital control head, connecting copper supply and discharge lines, and integrating unit with existing plumbing infrastructure. System was programmed, tested for proper operation, and left fully functional. Customer was advised that outdoor spigot replacement will require separate estimate.
Provided estimate for residential water heater replacement in basement utility area. Customer requested expedited same-day installation with advance notice upon technician arrival to coordinate departure from work.
Completed installation of Mitsubishi ductless mini-split heat pump system. Mounted outdoor condenser unit on exterior wall bracket between two windows on beige vinyl siding. Installed indoor air handler on interior wall near ceiling in residential room with proper clearances maintained. Ran refrigerant lines and electrical connections between indoor and outdoor units. System tested and confirmed operational upon completion.
Completed full HVAC system installation including new air conditioning condenser unit and evaporator coil. Unit was positioned on concrete pad against building foundation with proper clearances maintained. Connected refrigerant lines with appropriate insulation, ran electrical connections per code requirements, and coordinated with licensed electrician for final power hookup. All necessary permits were obtained prior to installation. System was pressure tested, evacuated, and charged with refrigerant to manufacturer specifications. Performed comprehensive startup procedures and verified proper system operation using digital manifold gauges and testing equipment to confirm optimal performance parameters.
Connected new double-basin stainless steel kitchen sink to existing water supply lines and drain system, installing chrome faucet with contemporary single-handle design and ensuring proper sealing at all connection points. Inspected bathroom toilet for reported leak, verified proper operation of flush mechanism and water supply connections. All fixtures tested and confirmed operational with no active leaks detected at time of service completion.
Completed full HVAC system installation including new furnace and air conditioning unit in basement utility area. Installed new electrical subpanel to provide dedicated power supply for AC system per code requirements. All equipment properly positioned, connected, and tested for optimal performance with ductwork integrated into existing infrastructure.
Responded to service call for diagnosis of slow leak under kitchen sink. Upon arrival, conducted thorough inspection of under-sink plumbing assembly. Identified significant corrosion and verdigris buildup on copper/brass pipe fittings at T-junction connection, indicating prolonged moisture exposure as source of leak. Corroded fittings had compromised seal integrity, allowing water to seep through connections. Documented existing double-basin stainless steel sink installation with single-handle chrome faucet for service records. Assessed condition of flexible supply lines and drain assembly. Provided customer with diagnostic findings and recommendations for repair of corroded fittings to resolve active leak issue. Customer also expressed interest in future installation of additional sink fixture, which was noted for follow-up consultation.
Completed estimate for full HVAC system replacement including natural gas furnace located in basement utility closet and outdoor air conditioning unit. Existing furnace showed signs of wear after limping through winter season. Assessed current installation configuration with furnace positioned in basement closet space with cylindrical ductwork elbow and outdoor condensing unit mounted on elevated white platform against house exterior with proper electrical disconnect and PVC condensate drainage. Provided pricing for complete system replacement with promotional upgrade package for air conditioning unit when purchased together with new furnace system.
Responded to service call for water softener continuously running and requiring manual shutdown. Performed diagnostic inspection of water treatment system in basement mechanical room. Identified malfunction in regeneration cycle control causing unit to run without stopping. Inspected control valve assembly, timer mechanism, and associated plumbing connections. Evaluated copper piping configuration, bypass valves, and electrical components mounted on system. Assessed overall condition of water softener tank, resin bed functionality, and brine tank operation to determine root cause of continuous operation issue.
Completed preventive maintenance tune-up on dual-head Mitsubishi ductless mini-split system. Inspected and serviced both indoor wall-mounted air handlers and outdoor condensing unit, checked refrigerant levels, cleaned filters, and verified proper system operation. Assessed blower wheels for cleaning requirements and documented equipment condition with photographs for customer review.
Responded to no cooling complaint and performed diagnostic evaluation of residential air conditioning system. Upon arrival, inspected outdoor condenser unit, verified equipment specifications from unit nameplate, and documented system condition with photos. Unit appeared to be in operational condition with no visible external damage or obvious mechanical failures noted during initial assessment.
Completed on-site estimate for installation of a two-head ductless mini-split system in a tri-level condominium. Customer currently relies on two wall-mounted window AC units that provide insufficient cooling capacity for the space. Assessed installation requirements for both indoor air handler locations in the living areas and evaluated exterior placement options for the outdoor condensing unit. Provided estimate for complete system installation including refrigerant line sets, electrical connections, and wall penetrations required for proper operation.
Conducted on-site estimate for replacement of existing air conditioning and natural gas furnace system. Evaluated current outdoor condensing unit and indoor furnace equipment located in basement, documented existing installation conditions including electrical disconnect, refrigerant line set routing, and equipment placement. Provided customer with replacement options and specifications for new HVAC system installation.
