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- New heating system installations: If your heating system is outdated, we can install a high-efficiency option that improves comfort and lower energy costs.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) 299-6197 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 January 2026 and April 2026.
The most recent job was on April 1, 2026.
Job Locations and Reviews
Completed installation of new air conditioning system and evaporator coil at residential property. New A/C condenser unit was positioned and secured at exterior location with proper refrigerant line sets, electrical connections, and condensate drainage routed through exterior wall penetration. Indoor evaporator coil was installed and integrated with existing furnace system in basement utility area, with all copper refrigerant lines properly insulated and secured throughout the installation path. System was charged to manufacturer specifications, tested for proper operation, and verified for adequate airflow and temperature differential.
Completed plumbing estimate for kitchen fixture installation featuring an undermount sink with gold-finished faucet, matching soap dispenser, and garbage disposal system. Assessed existing white cabinetry configuration with proper drainage connections including white PVC piping and functional disposal unit with electrical hookup beneath sink area.
Responded to no heat call on Goodman furnace system less than 10 years old. Upon arrival, conducted system diagnostic and found unit operational with all components functioning properly. Verified thermostat communication, inspected ignition sequence, confirmed proper gas valve operation and flame sensor functionality, and tested blower motor operation. System cycled normally and produced heat as designed with no faults detected.
Completed comprehensive tune-up and inspection of residential HVAC system including blue heating unit and associated mechanical components. Performed standard maintenance procedures, inspected copper piping connections, valves, and fittings throughout the system, and verified proper operation of all equipment to ensure optimal performance for the upcoming season.
# HVAC Install - A/C & Coil Job Summary Completed full installation of new air conditioning system with evaporator coil in residential basement utility room. Installed new air handler unit with integrated evaporator coil, positioned on concrete pad with proper clearances for service access. Connected refrigerant lines using black insulated suction and liquid line sets, routed vertically along right side of unit with secure mounting and appropriate insulation. Installed condensate drainage system using PVC piping with proper pitch and trap configuration, connected to condensate pump with visible operational indicator lights for monitoring pump function. Integrated new coil assembly with existing ductwork infrastructure, fabricating sheet metal transitions as needed to ensure proper airflow distribution. Secured all ductwork connections at plenum with appropriate sealing methods to prevent air leakage. Verified return air pathway through wall-mounted grille connects properly to air han
Performed diagnostic inspection of control board in HVAC system following installation callback. Inspected terminal connections and wiring configuration on the main circuit board, focusing on the relay components and 24VAC control circuit. Verified proper wire terminations at DRIVE-24VAC, HUM, ACC, and LINE XFMR CTR connection points to ensure proper system operation.
Successfully installed a new high-efficiency furnace with proper ductwork connections and PVC venting. Conducted measurements of the existing ductwork system to ensure optimal airflow configuration. Unit was mounted on a raised platform with all control wiring and mechanical components properly secured and tested for operation.
Performed exterior inspection of downspout drainage system adjacent to HVAC installation. Verified proper water diversion away from unit foundation with functional PVC downspout connections and appropriate landscape rock border placement. No evidence of water pooling or foundation issues observed.
Conducted inspection of residential property to provide piping estimate, documenting exterior access point via wooden deck stairs and examining interior wall cavity. Identified existing plumbing infrastructure with horizontal pipe runs through wooden framing members and assessed insulation condition surrounding piping system for potential replacement or modification work.
Conducted comprehensive assessment of existing HVAC system located in residential basement. Documented aging furnace with attached humidifier, examining structural integrity of metal ductwork, PVC ventilation components, and electrical connections. Recommended complete system replacement due to observed efficiency loss and potential end-of-life issues.
Conducted visual inspection of the residential gutter system, confirming proper installation and functionality of the PVC downspout assembly. Verified water discharge is directed appropriately away from the foundation with adequate splash block placement and appropriate gravel drainage surface to prevent water infiltration issues.
Successfully installed a new tankless water heater on concrete block wall with proper venting and plumbing connections. Installed copper supply lines with mounting brackets and connected PVC exhaust venting to existing system. Completed gas line connection and performed operational testing to verify proper functionality.
Completed installation of complete HVAC system including primary unit placement in utility area with proper electrical connections and PVC venting. System installation included running dual metallic supply/return lines through existing ductwork with appropriate sealing at junction points.
Completed inspection of floor drain system showing significant corrosion and clogging issues. Identified rusted drain cover with debris accumulation and surrounding concrete deterioration. Assessed exterior PVC vent pipe mounted on brick wall for proper installation and functionality as part of the drainage system replacement evaluation.
Conducted inspection of existing HVAC system in basement utility area. Evaluated aging furnace unit with PVC exhaust venting and associated ductwork for replacement. Documented current installation conditions including clearance requirements, existing connections, and potential installation challenges for proper system sizing and configuration recommendations.
Conducted an assessment of existing HVAC system for potential replacement. Inspected aging water heater and mechanical components in utility room, noting confined installation space with concrete block walls and multiple connected pipes. Evaluated outdoor AC unit showing signs of weather exposure and snow accumulation, currently installed on concrete pad adjacent to residence. System replacement would require careful consideration of existing utility room constraints and proper sizing for the home's requirements.
Performed comprehensive HVAC tune-up service including visual inspection of system components. Identified potential early-stage condensation issue on evaporator coil surface requiring monitoring. System currently operating within normal parameters with no immediate service concerns.
Performed routine tune-up on HVAC system, discovering significant corrosion on mounting bracket and interior components. Removed and replaced deteriorated bracket assembly showing rust damage at connection points, and cleaned accumulated rust stains and water damage from interior housing panel. System now operating within normal parameters after component replacement.
Performed combustion analysis on Lennox boiler system using Testo 310 II analyzer. Readings showed suboptimal efficiency at 67.9% with stack temperature of 216.2°F, oxygen at 18.5%, and CO2 at 1.38%. Documented existing installation configuration in mechanical room for reference.
Responded to no-heat call for a furnace under 10 years old. Diagnosed failed ignition sequence causing system lockout. Replaced dirty air filter which was restricting proper airflow and contributing to heat exchanger overheating. Reset system and verified proper operation through complete heating cycle.
