Thielmann Heating, Cooling & Plumbing can assist you with all your heating, ventilation, and air conditioning (HVAC) repair issues in Wauwatosa, Wisconsin. We want you to spend more time with your friends and family and enjoy your weekends and time off at the Hank Aaron Trails without worrying about the HVAC system in your house.
With over 90 years of experience, we can ensure your systems work efficiently for comfortable temperatures at your home or business.
For HVAC services in Wauwatosa, look no further than The Thielmann Group.
Our Expert Heating Services
Wauwatosa winters are no joke, and the last thing you want is a heating system that can’t keep up. We are experts in the following heating services:
- Fast, reliable heating repairs: A broken furnace or boiler can’t wait. Our technicians provide prompt service to restore heat to your home.
- New heating system installations: If your heating system is outdated, we can install a high-efficiency option that improves comfort and lower energy costs.
- Preventive heating maintenance: Regular checkups help prevent unexpected breakdowns, keep your system running smoothly and extend its life span.
Our furnace repair technicians are ready to promptly restore your heat. We know the urgency of “no heat” situations during Wisconsin winters. Our NATE-certified technicians can visit you 24/7 for HVAC emergencies — not including plumbing service — and can service and repair all system makes and models.
Air Conditioning Repairs, Maintenance & Installation for a Comfortable Wauwatosa Home
Summers in Wauwatosa can be relentless, but your home should always be a refreshing escape. Our air conditioning services help keep your space cool and comfortable when temperatures rise.
- Air conditioner repair services: If your air conditioner is struggling, we’ll diagnose the issue and return it to peak performance.
- New AC Installation: We install modern, energy-efficient air conditioning systems for better cooling and lower energy bills.
- Routine AC maintenance: A well-maintained system runs more efficiently, prevents costly repairs, and lasts longer.
Dependable Plumbing Services in Wauwatosa
Plumbing issues can be a major hassle, but we make fixing them easy. Our professional plumbing services cover everything from minor leaks to major installations.
- Repairs and installations: From leaky faucets to new water heaters, we handle all your plumbing needs with expert care.
- Water conditioning solutions: Improve your home’s water quality for better-tasting and cleaner water.
- Sump pumps and pipe repairs: Prevent water damage and keep your plumbing system in top shape.
- Hose bib services: We replace faulty hose bibs to prevent damage to your home’s foundation, including three common types — standard, ball valve and frost-free.
A Plan for Extra Peace of Mind
Want extra peace of mind? Our maintenance plan includes annual tuneups and a water quality analysis to help prevent costly surprises. You’ll also get priority scheduling, a 15% discount on repairs and expert maintenance scheduling handled for you.
Comprehensive Plumbing Services in Wauwatosa, WI
When your home’s plumbing stops working right, you need a team you can count on. Thielmann Heating, Cooling, and Plumbing delivers dependable plumbing services for homeowners across Wauwatosa with reliability and efficiency. Our team of licensed, insured plumbers handle everything from small leaks to complete home piping replacements, giving you peace of mind that your home’s plumbing systems are in good hands.
For over 95 years, our team has built a reputation for honest service and skilled workmanship. We respond quickly, assess the issue, and explain your repair or replacement options before any work begins. You get clear communication and long-lasting repairs every time.
Thielmann’s line of plumbing services include:
- Water line repair and replacement for aging or damaged pipes.
- Fixture repair and installation for faucets, toilets, and showers.
- Drain cleaning and clog removal to restore proper flow.
- Sump pump repair and replacement to protect your basement from flooding.
- Water heater installation and repair, including tankless options.
- Garbage disposal repair and installation.
- Water conditioning systems to remove minerals and improve taste.
If you notice slow drains, low water pressure, or higher water bills, those are signs of a hidden problem. Our technicians use proven tools and methods to identify the cause and fix it fast.
Thielmann Heating, Cooling, and Plumbing is proud to serve Wauwatosa with reliable, professional plumbing services. Call (262) 315-3067 today to schedule an appointment and keep your home’s plumbing working reliably all year long.
Why Wauwatosa Chooses Thielmann Heating, Cooling & Plumbing
For nearly a century, homeowners in Wauwatosa have trusted us to keep their homes comfortable and running smoothly. Here’s why:
- Licensed and insured: Your home is in expert hands.
- Five-star service: We put our customers first and deliver top-notch workmanship.
- Flexible financing: We can provide budget-friendly options through our financing partners.
- Commitment to quality: Our team does the job right the first time.
Comfort Starts Here
From chilly winter nights to sweltering summer afternoons, our expert team is here to help with reliable heating, cooling and plumbing solutions. Whether you need fast heating repairs, an air conditioning upgrade or trusted plumbing services, we’ve got you covered.
Call our technicians at (262) 384-6407 to book an appointment. A comfortable, worry-free home is just a call away.
Read Reviews by Our Customers
Recent Jobs and Reviews in Wauwatosa, WI
Wauwatosa, WI at a glance
Thielmann Heating, Cooling & Plumbing has completed 20 jobs in Wauwatosa, WI between September 2026 and October 2026.
The most recent job was on October 13, 2026.
Thielmann Heating, Cooling & Plumbing has completed 130 jobs in Wauwatosa, WI in the last 12 months.
Job Locations and Reviews
Performed diagnostic on a Carrier split-system air conditioner reporting fan operation without cooling. Inspected the outdoor condenser unit, finding it intact with no visible frost, rust, or physical damage, and checked the indoor air handler, ductwork, and electrical connections. Evaluated system operation to identify the cause of the loss of cooling.
Replaced basement sink faucet and repaired leaking cold water supply line connected to the fixture. Addressed moisture issues on supply piping in the basement utility area to restore proper function and prevent further water damage.
Conducted comprehensive estimate for complete HVAC system replacement including natural gas furnace, air conditioning unit, and water heater at residential property with equipment currently located in basement. Assessed existing furnace installation, electrical panel capacity with Square D breakers, and surrounding infrastructure including ductwork, copper piping, PVC plumbing, and concrete block construction to determine replacement specifications and financing options.
Responded to service call for non-functioning thermostat. Upon arrival, conducted diagnostic inspection of HVAC system and associated components in basement utility area. Inspected internal system components including motor assembly, wiring connections, and condensate drainage system. Verified proper operation of all mechanical components and electrical connections within the unit. System restored to normal operation with thermostat functioning properly.
Completed HVAC ductwork installation in crawl space and upper-level framing areas. Installed flexible and rigid metal ductwork throughout the structure, routing supply and return air distribution system through confined below-grade space and connecting to air handler unit in upper framing area. Navigated challenging crawl space conditions with limited clearance and worked around existing structural elements to ensure proper airflow and system efficiency.
Completed full installation of Mitsubishi ductless mini-split system in nursery room with outdoor condenser unit mounted on exterior brick wall. Installation included proper permitting, electrical work by licensed electrician, refrigerant line set installation with exterior conduit protection, indoor wall-mounted air handler placement above doorway, and decorative stone gravel base around outdoor unit for drainage and aesthetic appeal.
Conducted on-site consultation for residential cooling solution. Home currently equipped with boiler heating system and separate water heater but lacks air conditioning. Discussed options including traditional forced air system with ductwork installation versus ductless mini-split heat pump system. Assessed multiple interior spaces including bedrooms to determine optimal placement for indoor air handling units. Homeowner expressed strong interest in mini-split technology as alternative to conventional ducted HVAC system. Evaluated existing infrastructure and room layouts to provide comprehensive estimate for ductless cooling installation.
Completed comprehensive furnace tune-up including inspection of all internal components, electrical connections, and wiring harness. Verified proper operation of blower motor assembly, checked all safety controls, and confirmed unit is functioning within manufacturer specifications.
Completed installation of high-efficiency NTI boiler system with indirect-fired water heater in basement mechanical room. All copper piping, valves, and fittings installed per manufacturer specifications with proper venting and circulator pump integration. Installation performed under permit with electrical work coordinated through licensed electrician, ensuring full code compliance and system commissioning.
Completed comprehensive heating system tune-up and maintenance on 15-year-old furnace unit. Performed full system inspection including blower motor assembly, belt tension verification, electrical connections, and control module testing. Cleaned ductwork system and documented existing condensation on metallic plenum, indicating proper humidity levels during heating season. All components operating within manufacturer specifications; system tested and returned to service.
Conducted comprehensive water heater assessment in basement utility area and evaluated hot water distribution issue affecting kitchen sink. Inspected existing white cylindrical water heater unit, examined all supply and return piping connections, copper supply lines with shutoff valves, and verified proper venting configuration through galvanized ductwork. Documented current system condition including PVC drainage lines, pressure relief valve operation, and overall mechanical space layout to provide accurate replacement estimate and identify cause of inadequate hot water delivery to kitchen fixture.
Provided comprehensive plumbing estimate for multiple fixture replacements and repairs involving aging galvanized pipe system. Assessed saddle valve requiring replacement with ball valve due to galvanized pipe concerns, evaluated backyard hose spigot and associated shutoff valve with calcification issues accessible through 46-inch crawlspace with concrete flooring, and inspected non-operational front yard spigot for potential replacement. Documented existing plumbing conditions including PVC and galvanized pipe configurations throughout basement utility areas and exterior hose bib locations to determine scope of necessary repairs and upgrades.
Responded to service call for leaky gas pipes at residential property. Upon arrival, accessed crawl space and mechanical room to inspect gas line system serving water heater and HVAC equipment. Located gas leak on corrugated flexible gas connector line running through confined space near structural supports. Performed pressure test on gas system to verify leak location and ensure no additional compromised connections. Replaced defective flexible gas line with new approved connector, secured all fittings, and applied leak detection solution to verify integrity of repair. Conducted final pressure test on entire gas distribution system to confirm proper operating pressure and absence of leaks at all connection points. Restored gas service to water heater and furnace, verified proper operation of both appliances, and confirmed no additional issues with gas piping system.
Responded to emergency service call for furnace and air conditioning system evaluation. Upon arrival, conducted thorough assessment of existing HVAC equipment in basement mechanical room. Inspected gas furnace with access panel open to evaluate internal components, burners, and overall system condition. Examined air conditioning system and associated ductwork. Documented equipment age, condition, and operational status through detailed photography. Noted water heater proximity and basement environmental conditions including floor staining. Provided comprehensive replacement estimate for both heating and cooling systems based on equipment assessment and customer needs.
Completed comprehensive tune-up on commercial HVAC system including furnace and Luxaire air conditioning unit. Performed electrical diagnostics using digital multimeter, verifying proper voltage and amperage readings on system components. Installed new 20x25x4 Air Bear filter to maintain optimal indoor air quality and system efficiency. Inspected outdoor condensing unit, confirmed proper operation of condenser fan motor, and verified refrigerant line connections. All equipment tested and operating within manufacturer specifications upon completion.
Completed comprehensive maintenance tune-up on residential HVAC system including one attic-mounted air handler, two mini-split systems with a total of four indoor heads, and one boiler unit. Inspected and serviced outdoor condenser unit, confirmed proper operation of heat exchanger components, cleared debris accumulation from equipment area, and verified all systems operating within manufacturer specifications.
Completed full furnace installation in basement mechanical room with all required permits obtained. New gray metal furnace unit installed on concrete pad with proper clearances, including connection of black flexible ducts, refrigerant lines with service ports, and white PVC venting system secured to floor joists with appropriate hangers. Licensed electrician completed all electrical connections and wiring in accordance with local codes. System tested and verified operational upon completion.
Responded to emergency service call for boiler with failed heat exchanger. Performed comprehensive assessment of existing Peerless P-206AH-WM1 low pressure boiler rated at 164,000 BTU/HR and documented equipment specifications and electrical connections. Provided estimate for complete boiler replacement due to heat exchanger failure requiring new unit installation.
Completed on-site estimate for mini-split installation in upstairs bedroom with sloped ceilings, currently served by portable air conditioning unit. Assessed electrical infrastructure including existing main panel, subpanel, and Generac backup power system to determine capacity and connection requirements for new mini-split system.
Completed comprehensive A/C tune-up on residential Rheem HVAC system located in basement mechanical room. Performed full system inspection including furnace cabinet, air handler, refrigerant lines, condensate drain system, and all associated components. Verified proper operation of white PVC exhaust and intake venting, checked copper refrigerant line connections, and confirmed all manufacturer labels and safety information remain legible and intact. System found to be in good working condition with organized component arrangement and clean installation.
